42 results on '"Antonopoulos, Constantine N."'
Search Results
2. Editor's Choice - Covered Stents Versus Bare Metal Stents in the Treatment of Aorto-iliac Disease: A Systematic Review and Individual Participant Data Meta-analysis.
- Author
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Bontinis V, Bontinis A, Giannopoulos A, Manaki V, Kontes I, Rafailidis V, Antonopoulos CN, and Ktenidis K
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- Humans, Aortic Diseases surgery, Aortic Diseases therapy, Aortic Diseases diagnostic imaging, Aortic Diseases mortality, Aortic Diseases physiopathology, Treatment Outcome, Prosthesis Design, Metals, Stents, Iliac Artery surgery, Iliac Artery physiopathology, Iliac Artery diagnostic imaging, Peripheral Arterial Disease therapy, Peripheral Arterial Disease physiopathology, Peripheral Arterial Disease surgery, Endovascular Procedures instrumentation, Endovascular Procedures adverse effects, Vascular Patency
- Abstract
Objective: To assess the comparative safety and efficacy of covered stents (CS) and bare metal stents (BMS) in the endovascular treatment of aorto-iliac disease in patients with peripheral arterial disease., Data Sources: A systematic review was conducted adhering to the PRISMA 2020 and PRISMA for Individual Participant Data 2015 guidelines., Review Methods: A search of PubMed, Scopus, and Web of Science for articles published by December 2023 was performed. The primary endpoint was primary patency. Certainty of evidence was assessed via the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) framework., Results: Eleven studies, comprising 1 896 patients and 2 092 lesions, were included. Of these, nine studies reported on patients' clinical status, with 35.5% classified as Rutherford 4 - 6. Overall primary patency for CS and BMS at 48 months was 91.2% (95% confidence interval [CI] 84.1 - 99.0%) (GRADE, moderate) and 83.5% (95% CI 70.9 - 98.3%) (GRADE, low). The one stage individual participant data meta-analyses indicated a significant risk reduction for primary patency loss favouring CS (hazard ratio [HR] 0.58, 95% CI 0.35 - 0.95) (GRADE, very low). The 48 month primary patency for CS and BMS when treating TransAtlantic Inter-Society Consensus (TASC) C and D lesions was 92.4% (95% CI 84.7 - 100%) (GRADE, moderate) and 80.8% (95% CI 64.5 - 100%) (GRADE, low), with CS displaying a decreased risk of patency loss (HR 0.39, 95% CI 0.27 - 0.57) (GRADE, moderate). While statistically non-significant differences were identified between CS and BMS regarding technical success, 30 day mortality rate, intra-operative and immediate post-operative procedure related complications, and major amputation, CS displayed a decreased re-intervention risk (risk ratio 0.59, 95% CI 0.40 - 0.87) (GRADE, low)., Conclusion: This review has illustrated the improved patency of CS compared with BMS in the treatment of TASC C and D lesions. Caution is advised in interpreting overall primary patency outcomes given the substantial inclusion of TASC C and D lesions in the analysis. Ultimately, both stent types have demonstrated comparable safety profiles., (Copyright © 2024 European Society for Vascular Surgery. Published by Elsevier B.V. All rights reserved.)
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- 2024
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3. A Greek Multicentre Study Assessing the Outcome of Late Rupture After Endovascular Abdominal Aortic Aneurysm Repair.
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Moulakakis KG, Lazaris AM, Georgiadis GS, Kakkos S, Papavasileiou VG, Antonopoulos CN, Papapetrou A, Katsikas V, Klonaris C, and Geroulakos G
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- Humans, Male, Aged, Female, Greece epidemiology, Aged, 80 and over, Risk Factors, Time Factors, Treatment Outcome, Retrospective Studies, Aortic Aneurysm, Abdominal surgery, Aortic Aneurysm, Abdominal mortality, Endovascular Procedures adverse effects, Endovascular Procedures mortality, Aortic Rupture surgery, Aortic Rupture mortality, Aortic Rupture etiology, Hospital Mortality, Blood Vessel Prosthesis Implantation adverse effects, Blood Vessel Prosthesis Implantation mortality, Endoleak etiology, Endoleak surgery, Endoleak mortality
- Abstract
Objective: Late rupture after endovascular aortic aneurysm repair (EVAR) for an abdominal aortic aneurysm (AAA) is an increasing complication associated with a high mortality rate. This study aimed to analyse the causes and outcomes in patients with AAA rupture after EVAR., Methods: A multi-institutional Greek study of late ruptures after EVAR between 2008 - 2022 was performed. Primary outcomes were intra-operative and in hospital death., Results: A total of 70 patients presented with late rupture after EVAR (proportion of ruptured EVARs among all EVARs, 0.6%; 69 males; mean age 77.2 ± 6.7 years). The mean time interval between EVAR and late rupture was 72.3 months (range 6 - 180 months). In all cases the cause of rupture was the presence of an endoleak (type I, 73%) with sac enlargement. Moreover, 34% of subjects with rupture after EVAR had been lost to follow up and 32% underwent a secondary intervention. Additionally, 57 patients (81%) were treated by conversion to open surgical repair (COSR) and the remainder by endovascular correction of endoleak (ECE). Eleven intra-operative deaths (16%) were recorded. The overall in hospital mortality rate was 41% (23% ECE vs. 46% COSR; p = .21). Of the patients who presented as initially haemodynamically stable, 23% died during hospitalisation, while the respective mortality rate for patients who presented as unstable was 78% (odds ratio [OR] 11.8, 95% confidence interval [CI] 3.6 - 39.1; p < .001). Multivariable logistic regression analysis revealed that severity of haemodynamic shock was the most significant risk factor for intra-operative (OR 7.15, 95% CI 1.58 - 32.40; p = .010) and in hospital death (OR 9.53, 95% CI 2.79 - 32.58; p < .001)., Conclusion: These data underline the devastating prognosis of late rupture after EVAR. Haemodynamic status at presentation was an important predictive factor for death both in the ECE and COSR groups. Rigorous follow up and prompt evaluation of an unstable patient in case of rupture after EVAR is recommended., (Copyright © 2023 European Society for Vascular Surgery. Published by Elsevier B.V. All rights reserved.)
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- 2024
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4. Time Dependent Correlation Between Sac Behaviour and Re-intervention after Endovascular Aneurysm Repair.
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Kyrou IE, Antonopoulos CN, and Antoniou GA
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- Humans, Endovascular Aneurysm Repair, Treatment Outcome, Retrospective Studies, Risk Factors, Time Factors, Endoleak surgery, Aortic Aneurysm, Abdominal diagnostic imaging, Aortic Aneurysm, Abdominal surgery, Blood Vessel Prosthesis Implantation adverse effects, Blood Vessel Prosthesis Implantation methods, Endovascular Procedures adverse effects, Endovascular Procedures methods
- Abstract
Objective: This study aimed to investigate the correlation between aneurysm sac behaviour and time to re-intervention after endovascular aneurysm repair (EVAR)., Methods: A retrospective observational cohort study of patients who underwent EVAR at a single centre between January 2008 and November 2011 and who were followed up for a mean of 6.6 ± 2.9 years was conducted. Based on sac appearances on pre-operative imaging and imaging at the end of follow up, patients were stratified into two groups: (1) sac regression; and (2) no sac regression. The no sac regression group was further subdivided into stable sac group and sac expansion group. Sac regression and expansion throughout follow up were defined as a decrease or increase in the abdominal aortic aneurysm sac diameter of ≥ 5 mm compared with the pre-operative size. A Cox proportional hazards model using multiple failure per subject data was used to identify sac behaviour as a predictor of re-intervention free time., Results: Patients with sac regression had a higher probability of freedom from re-intervention compared with those with a stable or expanding aneurysm sac (94%, 57%, and 16% at 12 years, respectively; log rank, p < .001). Mean time to re-intervention was 11.3 years for the sac regression group, 8.8 years for the stable sac group, and 5.0 years for the sac expansion group (p < .001). In the stable sac group, the risk of re-intervention increased sharply six years after EVAR, whereas in the sac expansion group a sharp rise in re-intervention was noted 3.5 years after EVAR, reaching a plateau after year 6., Conclusion: A time dependent correlation between aneurysm sac behaviour and re-intervention was found. Such findings have implications for surveillance strategies., (Copyright © 2023 European Society for Vascular Surgery. Published by Elsevier B.V. All rights reserved.)
- Published
- 2024
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5. Individual Patient Data Meta-Analysis of 10-Year Follow-Up after Endovascular and Open Repair for Ruptured Abdominal AorticAneurysms.
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Antonopoulos CN, Moulakakis KG, Rorris FP, Doxani C, and Zintzaras E
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- Humans, Follow-Up Studies, Treatment Outcome, Time Factors, Risk Factors, Retrospective Studies, Endovascular Procedures, Aortic Aneurysm, Abdominal diagnostic imaging, Aortic Aneurysm, Abdominal surgery, Aortic Rupture diagnostic imaging, Aortic Rupture surgery, Blood Vessel Prosthesis Implantation adverse effects
- Abstract
Background: Endovascular aortic repair (EVAR) has conferred an early survival advantage compared to an open surgical repair (OSR) in patients with ruptured abdominal aortic aneurysms (rAAA). However, the long-term survival benefit after EVAR was not displayed among randomized controlled trials (RCTs), whereas many non-RCTs have provided conflicting results. We conducted a time-to-event individual patient data (IPD) meta-analysis on long-term rAAA data., Methods: All studies comparing mortality after EVAR versus OSR for rAAA were included. We used restricted mean survival times (RMSTs) as a measure of life expectancy for EVAR and OSR., Results: A total of 21 studies, including 12,187 patients (4952 EVAR and 7235 OSR) were finally deemed eligible. A secondary IPD analysis included 725 (372 EVAR and 353 OSR) patients only from the 3 RCTs (Immediate Management of the Patient With Rupture : Open Versus Endovascular Repair, Endovasculaire ou Chirurgie dans les Anévrysmes aorto-iliaques Rompus and Amsterdam Acute Aneurysm Trial trials). Among all studies, the median survival was 4.20 (95% confidence interval [CI]: 3.70-4.58) years for EVAR and 1.91 (95% CI: 1.57-2.39) years for OSR. Although EVAR presented with increased hazard risk from 4 to 7 years, which peaked at 6 years after the operation, the RMST difference was 0.54 (95% CI: 0.35-0.73; P < 0.001) years gained with EVAR at the end of the 10-year follow-up. IPD meta-analysis of RCTs did not demonstrate significant differences., Conclusions: At 10-years follow-up, EVAR was associated with a 6.5 month increase in life expectancy when compared to OSR after analyzing all eligible studies. Evidence from our study suggests that a strict follow-up program would be desirable, especially for patients with long-life expectancy., (Copyright © 2023 Elsevier Inc. All rights reserved.)
- Published
- 2023
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6. A systematic review of the surgical management of secondary aortoduodenal fistula.
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Koliakos N, Papakonstantinou D, Tzortzis AS, Antonopoulos CN, Stavratis FC, Bakopoulos A, Schizas D, and Lazaris AM
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- Humans, Retrospective Studies, Treatment Outcome, Postoperative Complications etiology, Postoperative Complications surgery, Risk Factors, Aortic Aneurysm, Abdominal diagnostic imaging, Aortic Aneurysm, Abdominal surgery, Aortic Aneurysm, Abdominal complications, Blood Vessel Prosthesis Implantation, Endovascular Procedures, Intestinal Fistula diagnostic imaging, Intestinal Fistula etiology, Intestinal Fistula surgery
- Abstract
Objective: Secondary aortoduodenal fistulae (SADF) are uncommon but life-threatening conditions that occur as complications of aortic reconstructive surgery. Data on the mortality and morbidity of procedures associated with SADF remain scarce., Methods: Comprehensive literature search was conducted on the MedLine, Scopus, Embase, and Web of Knowledge databases for cases of SADF. Data regarding patient demographics, fistula anatomy and treatment interventions performed were extracted for further analysis., Results: The study pool consisted of 127 case reports, 28 case series and 1 retrospective study published between 1973 and 2021. A total of 189 patients were operated for SADF. Among the 189 patients, 141 patients (74.6%) had aortic graft excision, 26 (13.8%) aortic primary repair, and 22 (11.6%) EVAR. Although patients undergoing EVAR were older with higher Charlson Comorbidity Index, compared with patients who had graft excision and primary aortic repair these differences were not statistically significant (P = .12 and P = .22, respectively). Primary bowel repair was performed in 145 patients (76.7%), duodenectomy in 25 (13.2%), and no bowel repair in 19 (10.1%). Additional omentoplasty was performed in 65 patients (34.6%). Mortality was comparable with respect to the type of aortic and bowel repair, with no statistically significant differences recorded (P = .54 and P = .77, respectively). Omentoplasty significantly decreased the risk of death (odds ratio, 0.4; 95% confidence interval, 0.2-0.8, P = .01)., Conclusions: Optimal operative management should address both the aortic and duodenal defects and be complemented with appropriate reconstructive procedures. Endovascular aortic approaches seem feasible in carefully select patients in whom duodenal repair may be omitted., (Copyright © 2022 Society for Vascular Surgery. Published by Elsevier Inc. All rights reserved.)
- Published
- 2023
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7. A Systematic Review and Meta-Analysis of Carotid Artery Stenting for the Treatment of Cervical Carotid Artery Dissection.
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Bontinis V, Antonopoulos CN, Bontinis A, Koutsoumpelis A, Zymvragoudakis V, Rafailidis V, Giannopoulos A, Stoiloudis P, and Ktenidis K
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- Humans, Stents adverse effects, Treatment Outcome, Carotid Arteries surgery, Carotid Stenosis complications, Carotid Stenosis diagnostic imaging, Carotid Stenosis surgery, Stroke etiology, Aortic Dissection complications
- Abstract
Objective: To assess the efficacy and safety of carotid artery stenting for the treatment of extracranial carotid artery dissection (CAD)., Data Sources: Systematic review using Medline, Scopus, EMBASE, and the Cochrane Library., Review Methods: A systematic search was performed according to the Preferred Reporting Items for Systematic reviews and Meta-analysis statement. Data from the eligible studies were extracted and meta-analysed. Primary endpoints included post-operative mortality, cerebrovascular events (CEs), and modified Rankin Score for neurological disability (mRS) at 90 days. Subgroup analyses were performed between stenting of spontaneous and traumatic CAD, primary stenting vs. stenting after failed medical therapy (FMT), and stenting of CAD in the presence of tandem occlusions vs. stenting of isolated extracranial CAD., Results: Twenty-four studies with 1 224 patients were included. Pooled post-operative mortality, CE, and mRS 0 - 2 rates were 1.71% (95% confidence interval [CI] 0.83 - 2.80), 6.45% (95% CI 2.80 - 11.10), and 76.13% (95% CI 64.15 - 86.50), respectively. The pooled stroke rate was 2.16% (95% CI 0.0 - 6.64). Spontaneous vs. traumatic CAD mortality rates were 3.20% (95% CI 1.80 - 4.88) and 0.00% (95% CI 0.00 - 1.59) while CE rates were 14.26% (95% CI 6.28 - 24.36) and 1.64% (95% CI 0.0 - 6.08). Primary stenting and stenting after FMT mortality rates were 0.63% (95% CI 0.0 - 5.63) and 0.0% (95% CI 0.0 - 2.24), while CE rates were 5.02% (95% CI 0.38 - 12.63) and 3.33% (95% CI 0.12 - 9.03). Mortality rates for tandem occlusions and isolated extracranial CAD were 5.62% (95% CI 1.76 - 10.83) and 0.23% (95% CI 0.0 - 1.88), respectively, while CE rates were 15.28% (95% CI 6.23 - 26.64) and 1.88% (95% CI 0.23 - 4.51). The methodological index for non-randomised studies score was 8.66 (low)., Conclusion: Both primary stenting and stenting of spontaneous CAD yielded unfavourable results with respect to stent thrombosis and stroke rates. Conversely, stenting following FMT had acceptable mortality and complication rates corroborating the use of stenting in the setting of CAD as a second line treatment. Due to the low quality of the included studies, definite conclusions cannot be drawn necessitating further research., (Copyright © 2022 European Society for Vascular Surgery. Published by Elsevier B.V. All rights reserved.)
- Published
- 2022
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8. E-Vita OPEN NEO Hybrid Stent Graft: A New Frontier for Total Arch Replacement.
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Rorris FP, Antonopoulos CN, Gissis I, Tsagakis K, and Kokotsakis J
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- Aged, Aorta, Thoracic diagnostic imaging, Aorta, Thoracic surgery, Blood Vessel Prosthesis, Endoleak etiology, Female, Humans, Male, Middle Aged, Stents, Treatment Outcome, Aortic Dissection diagnostic imaging, Aortic Dissection etiology, Aortic Dissection surgery, Aortic Aneurysm, Thoracic diagnostic imaging, Aortic Aneurysm, Thoracic etiology, Aortic Aneurysm, Thoracic surgery, Aortic Diseases surgery, Blood Vessel Prosthesis Implantation, Endovascular Procedures
- Abstract
Background: The ever-changing landscape of aortic arch surgery necessitates a constant update on the available devices and technologies for the contemporary management of complex aortic diseases. The E-Vita OPEN NEO hybrid stent graft system offers a unique approach for aortic arch replacement with the frozen elephant trunk technique. In contrast to its predecessors and other commercially available devices, it fits to each individual patient's needs by allowing for more proximal graft anastomosis. We sought to present our initial experience with the novel E-Vita OPEN NEO hybrid stent graft system focusing on its description, optimal graft selection, operative technique, and results in a clinical setting., Methods: We prospectively collected data on all patients in whom the E-Vita OPEN NEO device was used between October 2020 and May 2021. The primary outcome was perioperative or with 30-day mortality. Secondary outcomes were the incidence of neurologic complications (stroke and spinal cord ischemia) and endoleak on a postoperative computed tomography angiography., Results: During the study period, six patients received the novel hybrid stent device. The mean patient age was 59.3 ± 13.3 years and 83% were male. Two patients were operated on an emergent setting due to acute Stanford type A aortic dissection and there were two reoperations in patients with a history of previous repaired type A dissection. There was no perioperative or 30-day mortality and none of the patients exhibited adverse neurologic events. Two patients required completion thoracic endovascular repair due to type Ib endoleak. One patient died after a prolonged stay in the intensive care unit due to pneumonia and multiorgan failure., Conclusions: This novel device adapts to each patient's characteristics and offers a curative option for acute and chronic aortic arch and descending aortic conditions such as aneurysmal disease and aortic dissection. In addition, it offers an excellent landing station for potential endovascular therapies and allows for complete aortic remodeling., (Copyright © 2022 Elsevier Inc. All rights reserved.)
- Published
- 2022
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9. A systematic review and meta-analysis of stroke rates in patients undergoing thoracic endovascular aortic repair for descending thoracic aortic aneurysm and type B dissection.
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Karaolanis GI, Antonopoulos CN, Charbonneau P, Georgakarakos E, Moris D, Scali S, Kotelis D, and Donas K
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- Aorta, Thoracic surgery, Female, Humans, Male, Retrospective Studies, Risk Factors, Subclavian Artery surgery, Treatment Outcome, Aortic Aneurysm, Thoracic diagnostic imaging, Aortic Aneurysm, Thoracic surgery, Blood Vessel Prosthesis Implantation, Endovascular Procedures, Stroke epidemiology, Stroke etiology
- Abstract
Objective: We performed a systematic review and meta-analysis to assess the stroke rates after thoracic endovascular aortic repair (TEVAR) for descending thoracic aortic aneurysms and/or dissections., Methods: A systematic search of all the literature reported until September 2021 was performed according to the PRISMA (preferred reporting items for systematic reviews and meta-analyses) guidelines. The pooled perioperative stroke rates and corresponding 95% confidence intervals (CIs) were estimated using fixed or random effect methods., Results: A total of 878 study titles were identified by the initial search strategy, of which 43 were considered eligible for inclusion in the meta-analysis. A total of 5764 patients (63.5% male) were identified among the eligible studies. The pooled any stroke rate was 4.4% (95% CI, 3.60%-5.28%). However, after procedures without left subclavian artery (LSA) ostial coverage (eg, TEVAR deployed within or distal to zone ≥3), the stroke rate was 3.15% (95% CI, 2.21%-4.22%). For the patients with LSA coverage, the pooled stroke rate was 2.8% (95% CI, 1.69%-4.14%) for patients receiving left subclavian artery revascularization. However, the patients without LSA revascularization had a pooled estimated stroke incidence of 11.8% (95% CI, 5.85%-19.12%)., Conclusions: Stroke has been a common finding after TEVAR, especially with LSA coverage without revascularization, validating current clinical practice guidelines recommending routine revascularization, when feasible. Additional studies with larger patient numbers that provide separate data regarding the aortic pathology treated, the anatomic location of the stroke and their association with functional recovery and survival are needed., (Crown Copyright © 2022. Published by Elsevier Inc. All rights reserved.)
- Published
- 2022
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10. Autologous Platelet Rich Plasma Promotes the Healing of Non-Ischemic Diabetic Foot Ulcers. A Randomized Controlled Trial.
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Hossam EM, Alserr AHK, Antonopoulos CN, Zaki A, and Eldaly W
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- Humans, Prospective Studies, Treatment Outcome, Ulcer, Wound Healing, Diabetes Mellitus, Diabetic Foot diagnosis, Diabetic Foot therapy, Platelet-Rich Plasma
- Abstract
Background: DFU (diabetic foot ulcer) represents a major global health and socioeconomic problem and a leading cause of lower limb amputation. Although many therapies have been tested, none has been proposed as a dominant wound healing treatment. We performed a prospective randomized controlled study in order to assess the role of autologous platelet rich plasma (PRP) for the promotion of non-ischemic DFU healing., Methods: After full vascular assessment, a total of 80 patients were randomized in 1:1 ratio to receive either PRP injection in the healing edge and the floor of the targeted DFU (Group A), or have usual standard care with moist dressing with or without collagenase ointment (Group B). We calculated the total surface area (TSA) for the ulcer in both groups (cm
2 ) before, after treatment and every week up to 12 weeks of follow-up., Results: A total of 4 patients (10%) experienced major amputation in group B, while no major amputation was performed in patients of Group A (P< 0.001). A ≥ 50% reduction in TSA occurred earlier in Group A (at 2.5 weeks), compared to Group B (4.5 weeks); P < 0.001. Complete wound healing rate was 95% (n = 38) and it was achieved earlier (6th week) for patients of group A, contrary to 77.8% (n = 28) of patients (9th week) for Group B (P < 0.001). Superficial wound infection was noted in 10% (n = 4) of the cases in the PRP arm, while in group B, 45% (n = 18) of cases had a variable degree of infection ranging from superficial to deep wound infection and cellulites (P < 0.001). PRP treatment was cost-effective, with 247.50$ vs. 437.50$ for the total cost of treatment for patients of Group B., Conclusion: PRP is a cost-beneficial novel modality of treatment that can accelerate wound healing and decrease the rate of local infection in DFU, compared to other conventional treatment modalities., (Copyright © 2021. Published by Elsevier Inc.)- Published
- 2022
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11. Systematic Review and Meta-Analysis of Outcomes After Operative Treatment of Aberrant Subclavian Artery Pathologies and Suggested Reporting Items.
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Konstantinou N, Antonopoulos CN, Tzanis K, Kölbel T, Peterß S, Pichlmaier M, Stana J, and Tsilimparis N
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- Aorta, Thoracic diagnostic imaging, Aorta, Thoracic surgery, Female, Humans, Male, Subclavian Artery abnormalities, Subclavian Artery surgery, Cardiovascular Abnormalities surgery, Diverticulum
- Abstract
Objective: To synthesise and present all available evidence regarding the surgical treatment of patients with aberrant subclavian artery (aSA) pathologies during the last 30 years. The study also aimed to create a checklist of suggested reporting items to help increase reporting homogeneity., Methods: A systematic search of medical databases was performed to identify all studies published between 1990 and 2020 reporting on the outcomes of patients undergoing surgery for an aSA pathology. Patients were divided into two groups; Group A included patients undergoing open or hybrid surgery through sternotomy/thoracotomy and Group B included patients undergoing endovascular or hybrid treatment without chest access. The % crude rates (CR) of all variables of interest were calculated. A proportion meta-analysis was performed reporting pooled rates with 95% confidence intervals (CIs)., Results: Three hundred and fourteen studies were identified reporting on the surgical outcomes of 732 patients (60.1% males; 440/732). The quality of evidence was generally low, with 286 studies including fewer than four patients and 28 studies with five or more cases. Aberrant right subclavian artery (aRSA) in a left sided aortic arch was present in 71.4% of the patients and a Kommerell's diverticulum was present in 50.1% of the cases. A total of 68% of the patients were symptomatic on presentation, with the majority complaining of dysphagia (49.6%). Group A included 453 and Group B 279 patients. Studies reporting on five or more patients were included in the main meta-analysis. The pooled early mortality rate was 1.62% (95% CI 0.05% - 4.53%) in Group A and 1.96% (95% CI 0 - 6.34%) in Group B. Pooled rates of symptom relief were 99.52% (95% CI 92.05% - 100.00%) in Group A and 95.79% (95% CI 83.96% - 100.00%) in Group B., Conclusion: The surgical techniques used to treat aSA and aortic pathologies involving an aSA had remarkably low mortality rates and high clinical success, regardless of the technique used., (Copyright © 2022 European Society for Vascular Surgery. Published by Elsevier B.V. All rights reserved.)
- Published
- 2022
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12. Risk Factors for Aneurysms and Peripheral Arterial Disease: Combining Apples and Oranges?
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Liapis CD and Antonopoulos CN
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- Humans, Risk Factors, Aneurysm diagnostic imaging, Aneurysm surgery, Cardiovascular Abnormalities, Peripheral Arterial Disease diagnosis, Peripheral Arterial Disease epidemiology
- Published
- 2022
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13. Implantable cardioverter defibrillators in left ventricular assist device patients: Α systematic review and meta-analysis.
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Rorris FP, Antonopoulos CN, Kyriakopoulos CP, Drakos SG, and Charitos C
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- Humans, Death, Sudden, Cardiac prevention & control, Defibrillators, Implantable, Heart Failure therapy, Heart-Assist Devices, Registries
- Abstract
Implantable cardioverter-defibrillators (ICDs) remain the standard of care in advanced heart failure with reduced ejection fraction patients for the prevention of sudden cardiac death. However, current guidelines remain conflicting with respect to the use of ICDs in patients supported with a continuous flow left ventricular assist device (CF-LVAD). The current review adhered to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Studies comparing the use of ICD in patients with CF-LVADs were included. The 2 primary outcomes studied were all-cause mortality, and a successful bridge to heart transplantation. We calculated pooled odds ratios (ORs) with 95% confidence intervals (CIs). We also compared baseline characteristics between US and European studies, for CF-LVAD patients with an ICD. Among all studies, the use of an ICD was not associated with all-cause mortality in patients with CF-LVADs (OR: 0.85, 95% CIs: 0.64-1.12, p = 0.24). The presence of an ICD was associated with a trend towards increased likelihood of successful bridge to heart transplantation (OR: 1.12, 95% CI: 1.0-1.3, p = 0.06). A subgroup analysis of studies published by European centers revealed a significant decrease in pooled mortality (OR: 0.58, 95% CI: 0.4-0.83, p = 0.003) with the use of ICD, contrary to an increase in pooled mortality among studies published by US centers (OR: 1.2, 95% CI 1.02-1.33, p = 0.025). Moreover, we identified significant differences in baseline characteristics such as bridge to transplantation rate, Interagency Registry for Mechanically Assisted Circulatory Support profiles, and use of an intra-aortic balloon pump or extracorporeal membrane oxygenation preoperatively, between the US and European populations. While this meta-analysis did not show an overall survival benefit with the use of an ICD in CF-LVAD patients, it revealed significant differences in the derived benefit, in distinct patient populations. This might reflect differences in baseline patient characteristics and warrants further investigation., (Copyright © 2021 International Society for Heart and Lung Transplantation. Published by Elsevier Inc. All rights reserved.)
- Published
- 2021
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14. A systematic review and meta-analysis of the streamliner multilayer flow modulator stent for treatment of complex aortic lesions.
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Bontinis V, Antonopoulos CN, Bontinis A, Sfyroeras GS, Kontopodis N, Ioannou CV, Ktenidis K, and Geroulakos G
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- Adolescent, Aged, Aged, 80 and over, Aortic Diseases diagnostic imaging, Aortic Diseases mortality, Blood Vessel Prosthesis Implantation adverse effects, Blood Vessel Prosthesis Implantation mortality, Endovascular Procedures adverse effects, Endovascular Procedures mortality, Female, Humans, Male, Middle Aged, Postoperative Complications mortality, Postoperative Complications therapy, Prosthesis Design, Risk Assessment, Risk Factors, Time Factors, Treatment Outcome, Aortic Diseases surgery, Blood Vessel Prosthesis, Blood Vessel Prosthesis Implantation instrumentation, Endovascular Procedures instrumentation, Stents
- Abstract
Objective: We evaluated the safety and efficacy of multilayer flow modulator (MFM) stents (Cardiatis, Isnes, Belgium) for the treatment of complex aortic lesions., Methods: A systematic electronic research was conducted for studies reported from December 2008 to May 2020. Data extracted from 15 eligible case series (CS) were appropriately pooled and analyzed in a meta-analysis. The patient baseline characteristics were recorded, and 16 outcomes of interest were studied. The primary end points included 30-day all-cause and aneurysm-related mortality, aneurysm-related mortality at 1 year, vessel patency, and any endoleaks, ruptures, reinterventions, and aneurysm exclusion at the end of follow-up., Results: A total of 39 studies (15 CS and 24 case reports), involving 429 patients, met the inclusion criteria. Overall, 436 lesions were treated, and 1521 aortic branches were covered by the multilayer stent. The mean follow-up for the 15 CS with 404 patients was 14.6 months. Compliance with the instructions for use was reported by eight CS, with 75% of the procedures performed within the instructions for use. However, 41% of the patients reported by 12 CS had undergone a previous aortic intervention. The pooled 30-day all-cause and 30-day aneurysm-related mortality rates were 0.56% (95% confidence interval [CI], 0.00%-2.54%) and 0.00% (95% CI, 0.00%-0.80%), respectively. The pooled aneurysm-related mortality at 1 year of follow-up was 5.25% (95% CI, 0.07%-14.91%). The pooled vessel patency at the end of follow-up was 99.12% (95% CI, 97.73%-99.93%). The pooled reintervention and endoleak rates at the end of follow-up were 10.94% (95% CI, 3.64%-20.67%) and 10.70% (95% CI, 4.45%-18.66%), respectively. The crude spinal cord ischemia and renal failure rates were 0.69% and 1.8%, respectively., Conclusions: The results from the present review and meta-analysis have indicated the safety and efficacy of MFM stents for treating challenging aortic pathologic lesions when used as first-line treatment and within the instructions for use. The almost zero pooled 30-day all-cause and aneurysm-related mortality rates combined with the low crude spinal cord ischemia and renal failure rates indicate the use of MFM stents is a good treatment option for complex aortic lesions in the short- and mid-term periods. The lack of long-term follow-up warrants further research concerning the efficacy of the device in the long term., (Copyright © 2021 Society for Vascular Surgery. Published by Elsevier Inc. All rights reserved.)
- Published
- 2021
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15. Event rates with transcervical carotid artery stenting with flow reversal.
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Paraskevas KI, Antonopoulos CN, Kakisis JD, and Geroulakos G
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- Carotid Arteries, Humans, Carotid Stenosis diagnostic imaging, Carotid Stenosis surgery, Stents
- Published
- 2021
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16. Reply.
- Author
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Paraskevas KI, Antonopoulos CN, Kakisis JD, and Geroulakos G
- Published
- 2021
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17. An updated systematic review and meta-analysis of results of transcervical carotid artery stenting with flow reversal.
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Paraskevas KI, Antonopoulos CN, Kakisis JD, and Geroulakos G
- Subjects
- Arteriovenous Shunt, Surgical instrumentation, Arteriovenous Shunt, Surgical methods, Carotid Artery, Common surgery, Carotid Stenosis mortality, Femoral Vein surgery, Humans, Incidence, Ischemic Attack, Transient epidemiology, Ischemic Attack, Transient etiology, Jugular Veins surgery, Myocardial Infarction epidemiology, Myocardial Infarction etiology, Postoperative Complications etiology, Risk Assessment statistics & numerical data, Risk Factors, Stents, Stroke epidemiology, Stroke etiology, Treatment Outcome, Arteriovenous Shunt, Surgical adverse effects, Carotid Stenosis surgery, Postoperative Complications epidemiology
- Abstract
Objective: Transcervical carotid artery stenting (CAS) has emerged as an alternative to transfemoral CAS. An earlier systematic review from our group (n = 12 studies; 739 transcervical CAS procedures [489/739 with flow reversal]) demonstrated that transcervical CAS is a safe procedure associated with a low incidence of stroke and complications. Since then, new studies have been published adding nearly 1600 patients to the literature. We aimed to update our early systematic review and also to perform a meta-analysis to investigate outcomes specifically after transcervical CAS with flow reversal., Methods: An electronic search of PubMed/MEDLINE, Embase, and the Cochrane databases was carried out to identify studies reporting outcomes after transcervical CAS with flow reversal. Crude event rates for outcomes of interest were estimated by simple pooling of data. A proportion meta-analysis was also performed to estimate pooled outcome rates., Results: A total of 18 studies (n = 2110 transcervical CAS procedures with flow reversal) were identified. A high technical success (98.25%) and a low mortality rate (0.48%) were recorded. The crude rates of major stroke, minor stroke, transient ischemic attack, and myocardial infarction (MI) were 0.71%, 0.90%, 0.57%, and 0.57%, respectively; a cranial nerve injury occurred in 0.28% of the procedures. A neck hematoma was reported in 1.04% of the procedures, and a carotid artery dissection occurred in 0.76% of the interventions; in 1.09% of the cases, conversion to carotid endarterectomy was required. After a meta-analysis was undertaken, the pooled technical success rate was 98.69% (95% confidence interval [CI], 97.19-99.70). A pooled mortality rate of 0.04% (95% CI, 0.00-0.29) was recorded. The pooled rate of any type of neurologic complications was 1.88 (95% CI, 1.24-2.61), whereas the pooled rates of major stroke, minor stroke, and transient ischemic attack were 0.12% (95% CI, 0.00-0.46), 0.15% (95% CI, 0.00-0.50), and 0.01% (95% CI, 0.00-0.22), respectively. The pooled rate of bradycardia/hypotension was 10.21% (95% CI, 3.99-18.51), whereas the pooled rate of MI was 0.08% (95% CI, 0.00-0.39). A neck hematoma after transcervical CAS was recorded in 1.51% (95% CI, 0.22-3.54) of the procedures; in 0.74% (95% CI, 0.05-1.95) of the interventions, conversion to CEA was required. Finally, a carotid artery dissection during transcervical CAS occurred in 0.47% (95% CI, 0.00-1.38) of the procedures., Conclusions: This updated systematic review and meta-analysis demonstrated that transcervical CAS with flow reversal is associated with high technical success, almost zero mortality, and low rates of major stroke, minor stroke, MI, and complications., (Copyright © 2020 Society for Vascular Surgery. Published by Elsevier Inc. All rights reserved.)
- Published
- 2020
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18. Systematic review and meta-analysis of published studies on endovascular repair of thoracoabdominal aortic aneurysms with the t-Branch off-the-shelf multibranched endograft.
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Konstantinou N, Antonopoulos CN, Jerkku T, Banafsche R, Kölbel T, Fiorucci B, and Tsilimparis N
- Subjects
- Aged, Aortic Aneurysm, Thoracic mortality, Aortic Aneurysm, Thoracic physiopathology, Blood Vessel Prosthesis Implantation adverse effects, Blood Vessel Prosthesis Implantation mortality, Endovascular Procedures adverse effects, Endovascular Procedures mortality, Female, Humans, Male, Middle Aged, Postoperative Complications mortality, Postoperative Complications therapy, Risk Assessment, Risk Factors, Time Factors, Treatment Outcome, Vascular Patency, Aortic Aneurysm, Thoracic surgery, Blood Vessel Prosthesis, Blood Vessel Prosthesis Implantation instrumentation, Endovascular Procedures instrumentation, Prosthesis Design
- Abstract
Background: Endovascular treatment of thoracoabdominal aortic aneurysms is becoming increasingly popular in clinical practice, mainly because of its reduced perioperative mortality and morbidity. However, the custom-made stent graft platform that companies offer requires detailed preoperative planning and production time that can take up to 12 weeks. This may delay surgery in elective patients and is not an option for urgent or emergent cases. To surpass this limitation, the t-Branch (Cook Medical, Bloomington, Ind) was launched in 2012 in Europe as the first off-the-shelf standardized multibranched endograft for the endovascular treatment of thoracoabdominal aneurysms. Our aim was to systematically evaluate all published experience with this commercially available off-the-shelf thoracoabdominal stent graft., Methods: We performed a systematic inquiry of the medical databases to identify all published studies that reported on the outcomes of patients treated with the t-Branch stent graft and then conducted a qualitative synthesis and meta-analysis of the results. The main end points studied were technical success, mortality, major stroke, spinal cord ischemia, primary branch patency, and renal insufficiency during the first 30 days along with midterm mortality and reintervention rate. We estimated pooled proportions and 95% confidence intervals (CIs)., Results: We identified seven retrospective studies published between 2014 and 2018, with a total of 197 patients (mean age, 72.3 ± 7 years; 70% male). Among 165 patients, 45% were symptomatic and 19% were treated for a ruptured aortic aneurysm. In 197 patients, pooled technical success was 92.75% (95% CI, 83.9%-98.7%), and in 10% of the cases, an early endoleak was detected (95% CI, 0%-43.7%). Early mortality was 5.8% (95% CI, 2.5%-10%), and major stroke was observed in 4% of the patients (95% CI, 0.96%-8.40%). The rate of spinal cord ischemia was 12.2% (95% CI, 4.1%-23.2%), with the rate of permanent paraplegia at 1.3% (95% CI, 0%-8.7%). Acute renal failure was 18.7% (95% CI, 9.1%-30.4%), whereas primary branch patency was calculated at 98.2% (95% CI, 96.7%-99.2%). Mean follow-up was 15 ± 7 months. During this time, midterm mortality (after 30 days) was 6.9% (95% CI, 2.44%-12.8%) and pooled reintervention rate was 5.7% (95% CI, 1.70%-11.4%)., Conclusions: This pooled analysis indicated good technical success rate after t-Branch endograft implantation, with acceptable mortality and neurologic complications despite a high rate of urgent procedures. Thoracoabdominal endovascular repair with the t-Branch endograft is a feasible and safe therapeutic option for elective and urgent patients., (Copyright © 2020 Society for Vascular Surgery. Published by Elsevier Inc. All rights reserved.)
- Published
- 2020
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19. Carotid Artery Near Occlusion: Time to Rethink the Management?
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de Borst GJ, Antonopoulos CN, Meershoek AJA, and Liapis CD
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- Carotid Stenosis diagnostic imaging, Carotid Stenosis mortality, Clinical Decision-Making, Evidence-Based Medicine, Humans, Patient Selection, Risk Assessment, Risk Factors, Stents, Treatment Outcome, Carotid Stenosis therapy, Endarterectomy, Carotid adverse effects, Endarterectomy, Carotid mortality, Endovascular Procedures adverse effects, Endovascular Procedures instrumentation, Endovascular Procedures mortality
- Published
- 2020
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20. The use of iliac branch devices for preservation of flow in internal iliac artery during endovascular aortic aneurysm repair.
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Giosdekos A, Antonopoulos CN, Sfyroeras GS, Moulakakis KG, Tsilimparis N, Kakisis JD, Lazaris A, Chatziioannou A, and Geroulakos G
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- Adult, Aged, Aged, 80 and over, Aortic Aneurysm, Abdominal diagnostic imaging, Aortic Aneurysm, Abdominal physiopathology, Blood Vessel Prosthesis Implantation adverse effects, Endovascular Procedures adverse effects, Female, Humans, Iliac Aneurysm diagnostic imaging, Iliac Aneurysm physiopathology, Male, Middle Aged, Postoperative Complications etiology, Prosthesis Design, Regional Blood Flow, Risk Factors, Time Factors, Treatment Outcome, Aortic Aneurysm, Abdominal surgery, Blood Vessel Prosthesis, Blood Vessel Prosthesis Implantation instrumentation, Endovascular Procedures instrumentation, Iliac Aneurysm surgery
- Abstract
Objective: Common iliac artery aneurysms are present in more than a third of patients with abdominal aortic aneurysm and may pose a challenge during open and endovascular repair. Although embolization of the internal iliac artery is an established method, it may be complicated with buttock claudication, erectile dysfunction, colon ischemia, and pelvic necrosis. Iliac branch devices (IBDs), which permit preservation of the hypogastric artery, have been used to prevent these complications. We conducted a meta-analysis to assess the safety and outcomes of IBDs and to explore potential differences between the commercially available types of IBDs., Methods: The meta-analysis was conducted using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. After review of the literature, 36 eligible studies with a total of 1502 patients were included in our study. A meta-analysis was performed with investigation of the following outcomes: technical success rate, 30-day mortality, 30-day patency, follow-up patency, endoleak, buttock claudication, and IBD-associated reintervention. Furthermore, we conducted a subgroup meta-analysis by commercial type of endograft among the outcomes of interest., Results: Among all eligible studies, technical success of the method was 97.35% (95% confidence interval [CI], 96.27-98.29). The endoleak rate postoperatively and during the follow-up period was 12.68% (95% CI, 8.80-17.07). The 30-day patency of IBDs was estimated at 97.59% (95% CI, 96.49-98.54), whereas follow-up patency was 94.32% (95% CI, 91.70-96.54). Furthermore, reintervention rate associated with IBDs was 6.96% (95% CI, 5.10-9.03), and buttock claudication during the follow-up period was 2.15% (95% CI, 1.25-3.22)., Conclusions: IBD seems to be a safe, feasible, and effective technique for the treatment of aortoiliac aneurysms in select patients with suitable anatomy. Further results are awaited to explore the long-term efficacy and durability of these devices., (Copyright © 2019 Society for Vascular Surgery. Published by Elsevier Inc. All rights reserved.)
- Published
- 2020
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21. A Case of a Large Cephalic Vein Aneurysm.
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Antonopoulos CN, Liverakou E, Stamou C, Provatas I, Rontogianni D, and Argiriou M
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- Aged, Aneurysm diagnostic imaging, Aneurysm pathology, Dilatation, Pathologic, Forearm blood supply, Humans, Male, Treatment Outcome, Veins diagnostic imaging, Veins physiology, Aneurysm surgery, Veins surgery
- Abstract
Vein aneurysms represent a rare clinical entity with a wide range of clinical symptoms. We present a case of a 67-year-old male who presented with a large, bluish, easily compressible, soft tissue mass in the lateral side of his forearm, which was mildly tender and it had been worsening during the last year. A color duplex ultrasound revealed local venous dilatation of the cephalic vein, measuring 6.3 × 3.2 cm. The patient was operated under local anesthesia and the lesion was removed. Histology showed thinning of the inner and middle layers of the cephalic vein and incipient replacement of the outer layer by acellular fibrous tissue with progressive decrease of elastic, smooth muscle and collagen fibers of the inner and middle layers, compatible with an aneurysm of the cephalic vein. Large cephalic vein aneurysms might cause nerve compression and require surgical removal before permanent neurological defect occurs., (Copyright © 2019 Elsevier Inc. All rights reserved.)
- Published
- 2019
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22. Editor's Choice - Cryopreserved Allografts for Arterial Reconstruction after Aorto-Iliac Infection: A Systematic Review and Meta-Analysis.
- Author
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Antonopoulos CN, Papakonstantinou NA, Hardy D, and Lyden SP
- Subjects
- Allografts, Aneurysm, Infected, Blood Vessel Prosthesis adverse effects, Humans, Reoperation methods, Transplantation, Homologous methods, Treatment Outcome, Aorta, Abdominal transplantation, Blood Vessel Prosthesis Implantation methods, Cryopreservation, Organ Preservation methods, Prosthesis-Related Infections surgery
- Abstract
Objective: Native and aortic graft infections are rare, but they represent one of the most life threatening complications of vascular surgery. Several materials and surgical approaches have been developed so far. Among them, cryopreserved allografts have been proposed as a treatment option. A systematic review and meta-analysis was conducted to investigate the role of cryopreserved allografts for arterial reconstruction after aorto-iliac infection., Methods: The current meta-analysis was conducted using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Patient baseline characteristics were investigated, along with 30 outcomes after use of cryopreserved arterial allografts for reconstruction after aorto-iliac infection. Pooled proportions with 95% CIs of outcome rates were calculated., Results: A total of 31 studies, including 1,377 patients, finally participated in the meta-analysis. Among the early outcomes, 30 day mortality was 14.91% (95% CI 11.78-18.31). Peri-anastomotic rupture/allograft disruption rate was 5.90% (95% CI 2.77-9.88), while pooled aneurysmal degeneration/allograft dilatation was 4.99% (95% CI 1.60-9.68). A pooled rate of 3.11% (95% CI 1.60-4.98) was estimated for pseudoaneurysm formation after the use of cryopreserved arterial allografts, while the allograft thrombotic/stenotic complication rate and peri-anastomotic infection were 12.19% (95% CI 7.90-17.15) and 3.32% (95% CI 1.90-5.03), respectively. Mortality during follow up was 19.24% (95% CI 11.97-27.58), while allograft related mortality during follow up was 3.58% (95% CI 1.56-6.15). A pooled allograft related re-operation rate was estimated at 24.87% (95% CI 17.89-32.51)., Conclusions: The use of cryopreserved allograft seems to be a safe and durable option with acceptable outcomes for treatment of aorto-iliac infection., (Copyright © 2019 European Society for Vascular Surgery. All rights reserved.)
- Published
- 2019
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23. Repair of descending thoracic aortic aneurysms with Ankura Thoracic Stent Graft.
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Kratimenos T, Antonopoulos CN, Tomais D, Dedeilias P, Patris V, Samiotis I, Kokotsakis J, Farsaris D, and Argiriou M
- Subjects
- Aged, Aortic Aneurysm, Thoracic diagnostic imaging, Aortic Aneurysm, Thoracic mortality, Blood Vessel Prosthesis Implantation adverse effects, Blood Vessel Prosthesis Implantation mortality, Endovascular Procedures adverse effects, Endovascular Procedures mortality, Female, Hospital Mortality, Humans, Male, Postoperative Complications mortality, Prosthesis Design, Retrospective Studies, Risk Factors, Time Factors, Treatment Outcome, Aortic Aneurysm, Thoracic surgery, Blood Vessel Prosthesis, Blood Vessel Prosthesis Implantation instrumentation, Endovascular Procedures instrumentation, Stents
- Abstract
Objective: The aim of the study was to present the results for patients with atherosclerotic aneurysm of the descending thoracic aorta (DTA) treated with a novel thoracic stent graft., Methods: A single-center retrospective review of prospectively collected data was performed. We extracted demographic variables as well as atherosclerotic comorbidities and operation-related and imaging-related data from patients' medical records. We estimated technical success rate, in-hospital and 30-day mortality, and mortality at the end of follow-up as well as complication and reintervention rate in our study cohort. Follow-up computed tomography angiography was performed after 1 month and 6 months and yearly thereafter., Results: A total of 30 patients (80% male; mean age, 73.7 ± 6.33 years) were treated with Ankura Thoracic Stent Graft (Lifetech, Shenzhen, China) for DTA aneurysm from February 2014 until June 2017. Technical success of the thoracic endovascular aortic repair (TEVAR) was 97% (29/30 patients). A surgical conduit was required in one patient; in three patients, we intentionally covered the left subclavian artery because of insufficient proximal landing zone. No aorta-related deaths were recorded during follow-up. During the early postoperative period, two patients (7%) with long DTA coverage developed paralysis or paraparesis, which immediately resolved after lumbar drainage. No renal complications requiring dialysis were observed. One patient (3%) developed postoperative pulmonary infection, whereas access site complications were 7%. Two symptomatic patients treated outside instructions for use (7%) developed early type IA endoleak and one patient (3%) developed type IB endoleak; type II endoleak was recorded in 3% of the study cohort. During the 30-day postoperative period, two patients died of non-TEVAR-related causes, one of gastrointestinal bleeding and the other of pulmonary infection. During a median follow-up of 31.7 (range, 38.4) months, two more patients also died of non-TEVAR-related causes, one of stroke from carotid artery disease and the other of motor vehicle trauma. In the rest of the cohort, no other adverse events were noted., Conclusions: This novel endograft showed early evidence of a safe, effective, and durable endoprosthesis for the treatment of DTA aneurysms., (Copyright © 2018 Society for Vascular Surgery. Published by Elsevier Inc. All rights reserved.)
- Published
- 2019
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24. Open repair of thoracoabdominal aortic aneurysms in experienced centers.
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Moulakakis KG, Karaolanis G, Antonopoulos CN, Kakisis J, Klonaris C, Preventza O, Coselli JS, and Geroulakos G
- Subjects
- Aged, Aortic Aneurysm, Thoracic diagnostic imaging, Aortic Aneurysm, Thoracic mortality, Aortic Rupture diagnostic imaging, Aortic Rupture mortality, Humans, Length of Stay, Middle Aged, Postoperative Complications etiology, Risk Factors, Time Factors, Treatment Outcome, Aortic Aneurysm, Thoracic surgery, Aortic Rupture surgery, Blood Vessel Prosthesis Implantation adverse effects, Blood Vessel Prosthesis Implantation mortality, Clinical Competence, Hospitals, High-Volume, Hospitals, Low-Volume
- Abstract
Objective: We performed a systematic review and meta-analysis aiming to assess the mortality and morbidity of all published case series on thoracoabdominal aortic aneurysms (TAAAs) in experienced centers treated with open repair., Methods: A systematic search of the literature published until April 2017 was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Separate meta-analyses were conducted for overall in-hospital mortality for TAAA, mortality according to the type of TAAA, spinal cord ischemia, paraplegia and paraparesis, cardiac events, stroke, acute kidney failure, and bowel ischemia. A metaregression analysis was performed with volume of the center, percentage of ruptured cases among the series, length of in-hospital stay, and publication year as covariates., Results: A total of 30 articles were included in the meta-analysis, corresponding to a total of 9963 patients who underwent open repair for TAAAs (543 ruptured). The pooled mortality rate among all studies was 11.26% (95% confidence interval [CI], 9.56-13.09). Mortality was 6.97% (95% CI, 3.75-10.90), 10.32% (95% CI, 7.39-13.63), 8.02% (95% CI, 6.37-9.81), and 7.20% (95% CI, 4.19-10.84) for Crawford types I, II, III, and IV, respectively. Pooled spinal cord ischemia rate was estimated at 8.26% (95% CI, 6.95-9.67), whereas paraparesis and paraplegia rates were 3.61% (95% CI, 2.25-5.25) and 5% (95% CI, 4.36-5.68), respectively. We estimated a pooled cardiac event rate of 4.41% (95% CI, 1.84-7.95) and a stroke rate of 3.11% (95% CI, 2.36-3.94), whereas the need for permanent dialysis rate was 7.92% (95% CI, 5.34-10.92). Respiratory complications after surgery were as high as 23.01% (95% CI, 14.73-32.49). Metaregression analysis evidenced a statistically significant inverse association between mortality and the volume of cases performed in the vascular center (t = -2.00; P = .005). Interestingly, a more recent year of study publication tended to be associated with decreased in-hospital mortality (t = -1.35; P = .19)., Conclusions: Our study showed that despite the advances in open surgical techniques, the morbidity and mortality of the technique continue to remain considerable. Despite the focus on mortality and spinal cord ischemia, respiratory complications, permanent postoperative renal dialysis, stroke rate, and cardiac events also affect the outcome. The estimated trend of lower mortality in high-volume centers suggests that perhaps this type of service should be provided in a few reference centers that have an established record and experience in the management of these patients., (Copyright © 2018 Society for Vascular Surgery. Published by Elsevier Inc. All rights reserved.)
- Published
- 2018
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25. Bilateral Endograft Limb Occlusion after Endovascular Aortic Repair: Predictive Factors of Occurrence.
- Author
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Moulakakis KG, Antonopoulos CN, Klonaris C, Kakisis J, Lazaris AM, Sfyroeras GS, Mantas G, Mylonas SN, Vasdekis SN, Brountzos EN, and Geroulakos G
- Subjects
- Aged, Aortic Aneurysm, Abdominal diagnostic imaging, Aortic Aneurysm, Abdominal epidemiology, Aortic Aneurysm, Abdominal physiopathology, Aortography methods, Blood Vessel Prosthesis, Blood Vessel Prosthesis Implantation instrumentation, Computed Tomography Angiography, Endovascular Procedures instrumentation, Female, Graft Occlusion, Vascular diagnostic imaging, Graft Occlusion, Vascular physiopathology, Greece epidemiology, Humans, Iliac Artery diagnostic imaging, Iliac Artery surgery, Incidence, Male, Prospective Studies, Prosthesis Design, Risk Factors, Stents, Time Factors, Treatment Outcome, Vascular Calcification diagnostic imaging, Vascular Calcification epidemiology, Vascular Patency, Aortic Aneurysm, Abdominal surgery, Blood Vessel Prosthesis Implantation adverse effects, Endovascular Procedures adverse effects, Graft Occlusion, Vascular epidemiology
- Abstract
Background: Bilateral limb occlusion after endovascular aortic repair (EVAR) is relatively uncommon. The aim of this study was to investigate the incidence of bilateral endograft limb occlusion after EVAR and identify potential anatomical predictive factors of occurrence., Methods: A total of 579 patients underwent elective EVAR for abdominal aortic aneurysm between January 2010 and December 2015. All patients presenting with unilateral and bilateral occlusions were prospectively analyzed. A group of patients who underwent EVAR but did not present with endograft limb occlusion were matched for sex, age, and commercial type of endograft and were used as controls., Results: Overall, 21 (3.6%) patients were complicated with unilateral endograft limb occlusion, whereas 8 (1.4%) of them presented with sequential (in different time) bilateral limb occlusion. We found that iliac artery angulation ≥60°, iliac perimeter calcification ≥50%, and endograft oversizing in the common iliac artery of more than 15% had the same impact and could equally result in limb occlusion. We coded the variables angle, calcification, and endograft limb oversizing of the common iliac artery with a score from 0 to 2 as follows: (1) 0: angle <60° in both limbs, 1: angle ≥60° in one limb, 2: angle ≥60° in both limbs; (2) 0: calcification <50%: in both limbs, 1: calcification ≥ 50%: in one limb, 2: calcification ≥ 50%: in both limbs; and (3) 0: endograft limb oversizing <15%, 1: endograft limb oversizing ≥15% in one limb, 2: endograft limb oversizing ≥15% in both limbs. A composite variable, consisting of the sum of scoring in variables was analyzed, with a score from 0 to 6. Our study showed that it was the most probable to be in the control group when score in the composite variable was 0-3, it was the most probable to have unilateral limb occlusion when score was 4-5, and finally, it was the most probable to have bilateral limb occlusion when score in the composite variable was equal to 6., Conclusions: Our study evidenced that the highest probability for bilateral limb occlusion occurred when implantation of a more than 15% oversized endograft in iliac arteries with iliac artery angulation ≥60° and iliac perimeter calcification ≥50% was present in both iliac arteries. It is therefore clear that limb occlusion requires the synergistic effect and interaction of bilateral multiple thrombogenic components in the iliac artery before it is manifested., (Copyright © 2017 Elsevier Inc. All rights reserved.)
- Published
- 2018
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26. Endovascular stent grafting for ascending aorta diseases.
- Author
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Baikoussis NG, Antonopoulos CN, Papakonstantinou NA, Argiriou M, and Geroulakos G
- Subjects
- Adult, Aged, Aged, 80 and over, Aorta diagnostic imaging, Aortic Diseases diagnostic imaging, Blood Vessel Prosthesis Implantation adverse effects, Endovascular Procedures adverse effects, Female, Humans, Male, Middle Aged, Postoperative Complications etiology, Postoperative Complications surgery, Prosthesis Design, Reoperation, Risk Factors, Time Factors, Treatment Outcome, Aorta surgery, Aortic Diseases surgery, Blood Vessel Prosthesis, Blood Vessel Prosthesis Implantation instrumentation, Endovascular Procedures instrumentation, Stents
- Abstract
Objective: Conventional open surgery encompassing cardiopulmonary bypass has been traditionally used for the treatment of ascending aorta diseases. However, more than one in five of these patients will be finally considered unfit for open repair. We conducted a systematic review and meta-analysis to investigate the role of thoracic endovascular aortic repair (TEVAR) for aortic diseases limited to the ascending aorta., Methods: The current meta-analysis was conducted using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. We investigated patients' baseline characteristics along with early (30 days/in-hospital stay) and late (beyond 30 days/in-hospital stay) outcomes after TEVAR limited to the ascending aorta and not involving the arch vessels. Separate analyses for case reports and case series were conducted, and pooled proportions with 95% confidence intervals (CIs) of outcome rates were calculated., Results: Approximately 67% of the patients had a prior cardiac operation. TEVAR was performed mainly for acute or chronic Stanford type A dissection (49%) or pseudoaneurysm (28%). The device was usually delivered through the femoral artery (67%), and rapid ventricular pacing was used in nearly half of the patients. Technical success of the method was 95.5% (95% CI, 87.8-99.8). Among the early outcomes, conversion to open repair was 0.7% (95% CI, 0.1-4.8), whereas mortality was 2.9% (95% CI, 0.02-8.6). We estimated a pooled rate of 1.8% (95% CI, 0.1-7.0) for neurologic events (stroke or transient ischemic attack) and 0.8% (95% CI, 0.1-5.6) for myocardial infarction. Late endoleak was recorded in 16.4% (95% CI, 8.2-26.0), and 4.4% (95% CI, 0.1-12.4) of the population died in the postoperative period. Finally, reoperation was recorded in 8.9% (95% CI, 3.1-16.4) of the study sample., Conclusions: TEVAR in the ascending aorta seems to be safe and feasible for selected patients with various aortic diseases, although larger studies are required., (Copyright © 2017 Society for Vascular Surgery. Published by Elsevier Inc. All rights reserved.)
- Published
- 2017
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27. Celiac Artery Avulsion Secondary to Blunt Trauma: A Case Report.
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Megalou A, Pantazopoulos IN, Antonopoulos CN, Argiriou M, Zakynthinos S, and Mastora Z
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- Abdominal Injuries diagnostic imaging, Abdominal Injuries therapy, Aneurysm, False diagnostic imaging, Aneurysm, False therapy, Celiac Artery diagnostic imaging, Computed Tomography Angiography, Humans, Male, Middle Aged, Treatment Outcome, Vascular System Injuries diagnostic imaging, Vascular System Injuries therapy, Wounds, Nonpenetrating diagnostic imaging, Wounds, Nonpenetrating therapy, Abdominal Injuries etiology, Accidental Falls, Aneurysm, False etiology, Celiac Artery injuries, Vascular System Injuries etiology, Wounds, Nonpenetrating etiology
- Abstract
Celiac artery (CA) injuries are very rare and are often associated with high mortality. These injuries are associated more often with penetrating trauma rather than blunt trauma injury. Our case highlights a blunt trauma injury of CA in a hemodynamically stable patient without any symptoms that was treated conservatively., (Copyright © 2017 Elsevier Inc. All rights reserved.)
- Published
- 2017
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28. Treatment of Type II Endoleak and Aneurysm Expansion after EVAR.
- Author
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Moulakakis KG, Klonaris C, Kakisis J, Antonopoulos CN, Lazaris A, Sfyroeras GS, Mantas G, Vasdekis SN, Brountzos EN, and Geroulakos G
- Subjects
- Aged, Aged, 80 and over, Aortic Aneurysm, Abdominal diagnostic imaging, Aortic Aneurysm, Abdominal mortality, Aortography methods, Blood Vessel Prosthesis Implantation mortality, Computed Tomography Angiography, Databases, Factual, Endoleak diagnostic imaging, Endoleak etiology, Endoleak mortality, Endovascular Procedures mortality, Female, Greece, Humans, Ligation, Male, Reoperation, Retrospective Studies, Risk Factors, Time Factors, Treatment Outcome, Aortic Aneurysm, Abdominal surgery, Blood Vessel Prosthesis Implantation adverse effects, Embolization, Therapeutic adverse effects, Embolization, Therapeutic mortality, Endoleak therapy, Endovascular Procedures adverse effects, Suture Techniques adverse effects, Suture Techniques mortality
- Abstract
Background: The management of type II endoleak causing sac enlargement continues to be a topic of debate. The purpose of this study was to examine and compare the outcomes between open surgical technique with sacotomy and suturing of the feeding vessels to interventional embolization in patients with aneurysm sac expansion after endovascular aneurysm repair (EVAR)., Methods: Inclusion criteria for intervention in patients with prior EVAR and type II endoleak were asymptomatic expanding aneurysm sac > 5 mm between 2 consecutive follow-up computed tomography angiography scans and symptomatic aneurysm sac expansion. Age, sex, comorbidities, clinical presentation, commercial type of endograft of prior EVAR, aneurysm sac increase, type of treatment, morbidity, mortality, and follow-up were also recorded., Results: A total of 694 consecutive patients were operated with EVAR during the study period. Among them, 29 patients (4.2%) were presented with a type II endoleak that required reintervention. Ten patients (34.5%) were treated with embolization. We recorded a 50% technical success in the group of primary translumbar embolization and 67% in the group of intra-arterial embolization. Twenty-two patients were treated with laparotomy and open ligation of the culprit arteries causing the type II endoleak. Among them, 3 patients (13.6%) had been initially treated with unsuccessful embolization. Periprocedural intervention complications for the embolization group (10%, 1/10) included 1 psoas hematoma. On the contrary, complications after primary open ligation were 13.6% (3/22) and included 1 proximal dislocation treated with endograft explantation, 1 distal dislocation, and 1 limb ligation with femoral-femoral bypass which resulted in colonic ischemia and death (4.5%)., Conclusions: Open surgical repair with sacotomy and suturing of the feeding vessels appeared to have better outcome regarding the exclusion of the aneurysm but was associated with a higher incidence of severe complications and one related death. If these results are confirmed in larger series, endovascular approach should be the preferred treatment option., (Copyright © 2016 Elsevier Inc. All rights reserved.)
- Published
- 2017
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29. A network meta-analysis of randomized controlled trials comparing treatment modalities for de novo superficial femoral artery occlusive lesions.
- Author
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Antonopoulos CN, Mylonas SN, Moulakakis KG, Sergentanis TN, Sfyroeras GS, Lazaris AM, Kakisis JD, and Vasdekis SN
- Subjects
- Alloys, Angioplasty, Balloon, Arterial Occlusive Diseases diagnostic imaging, Arterial Occlusive Diseases physiopathology, Brachytherapy, Cardiovascular Agents administration & dosage, Coated Materials, Biocompatible, Constriction, Pathologic, Cryotherapy, Drug-Eluting Stents, Humans, Network Meta-Analysis, Odds Ratio, Prosthesis Design, Randomized Controlled Trials as Topic, Recurrence, Risk Factors, Stents, Time Factors, Treatment Outcome, Vascular Access Devices, Vascular Patency, Arterial Occlusive Diseases therapy, Endovascular Procedures adverse effects, Endovascular Procedures instrumentation, Femoral Artery diagnostic imaging, Femoral Artery physiopathology, Vascular Surgical Procedures adverse effects, Vascular Surgical Procedures instrumentation
- Abstract
Background: Treatment of superficial femoral artery (SFA) lesions remains challenging. We conducted a network meta-analysis of randomized controlled trials aiming to explore the efficacy of treatment modalities for SFA "de novo" lesions., Methods: Eleven treatments for SFA occlusive disease were recognized. We used primary patency and binary restenosis at 12-month follow-up as proxies of efficacy for the treatment of SFA lesions., Results: A total of 33 studies (66 study arms; 4659 patients) were deemed eligible. In terms of primary patency, odds ratios (ORs) with 95% confidence intervals (CIs) were statistically significantly higher in drug-eluting stent (DES; OR, 10.05; 95% CI, 3.22-31.39), femoropopliteal bypass surgery (BPS; OR, 7.15; 95% CI, 2.27-22.51), covered stent (CS; OR, 3.56; 95% CI, 1.33-9.53), and nitinol stent (NS; OR, 2.83; 95% CI, 1.42-5.51) compared with balloon angioplasty (BA). The rank order from higher to lower primary patency in the multidimensional scaling was DES, BPS, NS, CS, drug-coated balloon, percutaneous transluminal angioplasty with brachytherapy, stainless steel stent, cryoplasty (CR), and BA. Combination therapy of NS with CR and drug-coated balloon were the two most effective treatments, followed by NS, CS, percutaneous transluminal angioplasty with brachytherapy, cutting balloon, stainless steel stent, BA, and CR in terms of multidimensional scaling values for binary restenosis., Conclusions: DES has shown encouraging results in terms of primary patency for SFA lesions, whereas BPS still maintains its role as a principal intervention. On the contrary, BA and CR appear to be less effective treatment options., (Copyright © 2016 Society for Vascular Surgery. Published by Elsevier Inc. All rights reserved.)
- Published
- 2017
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30. Changes in Arterial Stiffness and N-terminal pro-brain natriuretic peptide Levels after Endovascular Repair of Descending Thoracic Aorta.
- Author
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Moulakakis KG, Kadoglou NPE, Antonopoulos CN, Mylonas SN, Kakisis J, Papadakis I, Karakitsos P, and Liapis CD
- Subjects
- Aged, Aged, 80 and over, Aorta, Thoracic diagnostic imaging, Aorta, Thoracic physiopathology, Aortic Diseases blood, Aortic Diseases physiopathology, Aortography methods, Biomarkers blood, Blood Vessel Prosthesis, Chi-Square Distribution, Computed Tomography Angiography, Female, Humans, Kaplan-Meier Estimate, Male, Middle Aged, Prospective Studies, Pulse Wave Analysis, Risk Factors, Stents, Time Factors, Treatment Outcome, Up-Regulation, Aorta, Thoracic surgery, Aortic Diseases surgery, Blood Vessel Prosthesis Implantation adverse effects, Blood Vessel Prosthesis Implantation instrumentation, Endovascular Procedures adverse effects, Endovascular Procedures instrumentation, Natriuretic Peptide, Brain blood, Peptide Fragments blood, Vascular Stiffness
- Abstract
Background: Limited data exist concerning the biomechanical and central hemodynamic changes induced by endograft implantation in the descending thoracic aorta. The aim of this prospective ongoing study was to evaluate changes in arterial stiffness, assessed by pulse wave velocity (PWV; m/sec), and N-terminal pro-brain natriuretic peptide (NT-proBNP; pg/mL) levels in patients undergoing endovascular repair of descending thoracic aorta (thoracic endovascular aortic repair [TEVAR])., Methods: Twenty-seven patients with thoracic aorta pathology who underwent elective TEVAR were included in the study. Blood samples were obtained preoperatively, 24 hr, 48 hr, and 6 months postoperatively, and serum levels of NT-proBNP were measured. PWV was determined before and 6 months after TEVAR. One-way analysis of variance by ranks was used to test the alterations in PWV (from baseline to 6 months) and NT-proBNP (along the 4 phases of evaluation). Post hoc analyses were appropriately performed., Results: We recorded an increase in values of NT-proBNP from baseline (median = 96.1, interquartile range [IQR] = 82.7-117.9) to 24 hr postoperative (median = 201.6, IQR = 82.8-425.9), 48 hr postoperative (median = 317.0, IQR = 102.5-1,479.5), and 6 months postoperative (median = 144, IQR = 82.8-276.4). The Kruskal-Wallis H test showed a statistically significant increase (x
2 (3) = 11.17, P = 0.01) in NT-proBNP from baseline (rank mean = 22.19) toward the postoperative time points of evaluation (24 hr postoperative: 35.17 [change: +12.9, P = 0.02]; 48 hr postoperative: 42.64 [change: +20.5, P < 0.001]; 6 month postoperative: 34.91 [change: +12.7, P = 0.03]). An increase in PWV values was recorded from baseline (median = 11.9, IQR = 10.0-13.5) to 6 months postoperatively (median = 13.9, IQR = 11.9-16.4). That change achieved statistically significant level [x2 (1) = 4.86, P = 0.03], with an increase in mean rank PWV (+7.5)., Conclusions: Implementation of thoracic stent grafts may be associated with considerable increase of both arterial stiffness and NT-proBNP serum levels along time. Those results may indicate an adverse cardiac impact of TEVAR. However, the early and long-term effects of TEVAR on cardiovascular outcomes require further investigation., (Copyright © 2016 Elsevier Inc. All rights reserved.)- Published
- 2017
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31. Management of Patients with Internal Carotid Artery Near-total Occlusion: An Updated Meta-analysis.
- Author
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Mylonas SN, Antonopoulos CN, Moulakakis KG, Kakisis JD, and Liapis CD
- Subjects
- Carotid Stenosis diagnosis, Carotid Stenosis etiology, Endarterectomy, Carotid, Humans, Stents, Carotid Artery, Internal, Carotid Stenosis therapy
- Abstract
Background: The decision for revascularization in patients with near-total internal carotid artery (ICA) occlusion still remains controversial. We undertook an extensive review of the literature and conducted a meta-analysis aiming to investigate the appropriate therapeutic approach for patients with near-total ICA occlusion., Methods: A multiple electronic health database search was performed on all articles published up to December 2014. All available data were analyzed giving emphasis on the applied therapeutic approach (best medical therapy [BMT], carotid endarterectomy [CEA], and carotid artery stenting [CAS]), whereas the main endpoints of the meta-analysis were transient ischemic attack (TIA), stroke, stroke-related death, myocardial infarction (MI), major adverse event (MAE), overall mortality, and restenosis., Results: Five articles on BMT and CEA, 8 articles on CEA, and 11 articles on CAS were deemed eligible. A statistically significant difference was recorded in pooled stroke incidence rates (IRs) per 100 patient-years (p-ys) of BMT (IR = 6.19) compared with CEA (IR = 2.24, P = 0.002) and CAS (IR = 1.64, P < 0.001) studies. No statistically significant differences were recorded in pooled IRs per 100 p-ys between CEA and CAS, concerning TIA (P = 0.96), stroke (P = 0.44), stroke-related death (P = 0.30), and MAE (P = 0.99), whereas a borderline significance was recorded concerning overall mortality (P = 0.08) and restenosis (P = 0.08). No nominally significant effects were demonstrated with respect to almost all the studied potential modifiers in meta-regression analysis among the eligible studies., Conclusions: An intervention is probably indicated for patients with near-total ICA occlusion. The results of our study underline the need for including patients with near-total ICA occlusion in future randomized controlled trials. Meanwhile, the treatment of these patients should be individualized., (Copyright © 2015 Elsevier Inc. All rights reserved.)
- Published
- 2015
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32. Stress Management in Patients Undergoing Carotid Endarterectomy for Carotid Artery Stenosis: A Pilot Randomized Controlled Trial.
- Author
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Vasdekis SN, Roussopoulou A, Lazaris A, Antonopoulos CN, Voumvourakis K, Darviri C, and Tsivgoulis G
- Subjects
- Aged, Aged, 80 and over, Anxiety prevention & control, Anxiety psychology, Carotid Stenosis complications, Carotid Stenosis diagnosis, Carotid Stenosis psychology, Female, Greece, Humans, Male, Middle Aged, Pilot Projects, Psychiatric Status Rating Scales, Psychometrics, Relaxation Therapy adverse effects, Risk Factors, Stress, Psychological diagnosis, Stress, Psychological psychology, Surveys and Questionnaires, Time Factors, Treatment Outcome, Breathing Exercises adverse effects, Carotid Stenosis surgery, Endarterectomy, Carotid adverse effects, Endarterectomy, Carotid psychology, Imagery, Psychotherapy, Relaxation Therapy methods, Stress, Psychological prevention & control
- Abstract
Background: Psychological stress is common to patients submitted to cardiovascular operations. The purpose of this pilot, single-center, open-label, randomized controlled trial was to investigate the effects of a stress management program (SMP) on patients undergoing carotid endarterectomy (CEA)., Methods: A sample of 24 patients with significant (>70%) carotid stenosis was finally randomized to SMP (intervention group; n = 12) or no-stress management intervention (control group; n = 12) before CEA. SMP consisted of 2 relaxation techniques (relaxation-breathing and guided imagery) before and 8 weeks after CEA. Measurements included Perceived Stress Scale (PSS), Hospital Anxiety and Depression Scale (HADS), Health Locus of Control Scale (HLC), and blood pressure and heart rate., Results: The 2 groups did not differ in terms of demographic characteristics, vascular risk factors, and baseline psychometric measurements. No delay on the time of surgery was caused by the practice of the relaxation techniques. Both perceived stress and anxiety improved within the intervention group at the end of the program (P = 0.005 and P = 0.007, respectively). No improvement in PSS-14, HLC, and HADS scores were documented in control group at the end of the 8-week follow-up period. The intervention group had lower PSS-14 scores at 8 weeks after CEA (median PSS-14 score, 20 points; range, 10-28) compared with control group (median PSS, 25 points; range, 11-47; P = 0.026). No significant effect of SMP was found for blood pressure and heart rate measurements., Conclusions: Our results indicate that relaxation techniques appear to be beneficial in terms of stress and anxiety reduction in patients undergoing CEA. These findings require independent confirmation in the setting of a larger, double-blind randomized controlled trial., (Copyright © 2015 Elsevier Inc. All rights reserved.)
- Published
- 2015
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33. The impact of carotid artery stenting on cognitive function in patients with extracranial carotid artery stenosis.
- Author
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Antonopoulos CN, Kakisis JD, Sfyroeras GS, Moulakakis KG, Kallinis A, Giannakopoulos T, and Liapis CD
- Subjects
- Aged, Attention, Carotid Stenosis complications, Carotid Stenosis diagnosis, Carotid Stenosis psychology, Cognition Disorders diagnosis, Cognition Disorders psychology, Executive Function, Female, Humans, Male, Memory, Middle Aged, Neuropsychological Tests, Psychomotor Performance, Recovery of Function, Time Factors, Treatment Outcome, Verbal Behavior, Angioplasty instrumentation, Carotid Stenosis therapy, Cognition, Cognition Disorders etiology, Stents
- Abstract
Background: The effect of carotid artery stenting (CAS) on cognitive function in patients with extracranial carotid artery stenosis is equivocal. The aim of this study was to examine the impact of CAS on various domains of cognitive function., Methods: We performed a meta-analysis of the studies evaluating various domains of cognitive function before and after CAS, namely, (1) global cognition using Mini-Mental State Examination (MMSE) and Rey Auditory Verbal Learning Test (RAVLT), (2) executive function using Trail Making Test (TMT) A or Color Trails Test (CTT) A and TMT B or CTT B, (3) language ability using Boston Naming Test (BNT), (4) memory, (5) attention/psychomotor speed, and (6) functional ability, using various cognitive tests. Pooled weighted mean differences (WMDs) and standardized mean differences (SMDs) with 95% confidence intervals (95% CIs) were appropriately calculated using fixed or random effects models after assessing between-study heterogeneity. Meta-regression analysis was performed with number of patients per study; mean age (years); follow-up (months); proportion of men; proportion of patients with hypertension, diabetes mellitus, hyperlipidemia, smoking, and coronary artery disease; proportion of symptomatic patients; and degree of ipsilateral and degree of contralateral carotid stenosis as covariates., Results: Sixteen studies were eligible, including a total of 626 CAS patients. A statistically significant improvement of global cognition was detected with MMSE (WMD = 0.67, 95% CI = 0.29-1.05, P < 0.001; follow-up = 5.6 months), but not with RAVLT (SMD = 0.45, 95% CI = -0.03 to 0.93, P = 0.07; follow-up = 2.4 months). Significant improvement of memory (SMD = 0.33, 95% CI = 0.11-0.55, P < 0.01; follow-up = 4.1 months) and attention/psychomotor speed (SMD = 0.21, 95% CI = 0.04-0.39, P = 0.02; follow-up = 4 months) was also detected. No statistically significant effect on executive function (TMT A/CTT A and TMT B/CTT B; SMD = 0.08, 95% CI = -0.10 to 0.26, P = 0.39; follow-up = 3.9 months and SMD = -0.02, 95% CI = -0.20 to 0.16, P = 0.82, respectively; follow-up = 3.9 months), language ability (BNT; SMD = 0.24, 95% CI = -0.05 to 0.54, P = 0.10; follow-up = 4 months), and functional ability (SMD = -0.05, 95% CI = -0.25 to 0.15, P = 0.63; follow-up = 3.8 months) was observed. No significant effects of the examined covariates were demonstrated in the meta-regression analyses., Conclusions: CAS may be associated with improvement in global cognition, memory, and attention/psychomotor speed. There was no positive effect on executive function, language, and functional ability, but CAS was not associated with a decline in any area of cognitive function. Future studies in larger groups of patients are probably needed to fully investigate the long-term effect of CAS on cognition in patients with carotid artery stenosis., (Copyright © 2015 Elsevier Inc. All rights reserved.)
- Published
- 2015
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34. Reply: To PMID 25135872.
- Author
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Moulakakis KG, Mylonas SN, Antonopoulos CN, Sfyroeras GS, and Kakisis J
- Subjects
- Humans, Anti-Bacterial Agents therapeutic use, Aortic Aneurysm, Thoracic surgery, Blood Vessel Prosthesis adverse effects, Device Removal methods, Endovascular Procedures adverse effects, Practice Guidelines as Topic, Prosthesis-Related Infections therapy
- Published
- 2015
- Full Text
- View/download PDF
35. Volume of new-onset thrombus is associated with the development of postimplantation syndrome after endovascular aneurysm repair.
- Author
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Kakisis JD, Moulakakis KG, Antonopoulos CN, Mylonas SN, Giannakopoulos TG, Sfyroeras GS, Karakitsos P, and Liapis CD
- Subjects
- Aged, Aortic Aneurysm, Abdominal diagnosis, Aortic Aneurysm, Abdominal physiopathology, Aortography methods, Biomarkers blood, Body Temperature Regulation, Contrast Media, Elective Surgical Procedures, Female, Fever etiology, Fever physiopathology, Humans, Inflammation Mediators blood, Leukocyte Count, Male, Mesenteric Artery, Inferior diagnostic imaging, Mesenteric Artery, Inferior physiopathology, Platelet Count, Predictive Value of Tests, Risk Factors, Systemic Inflammatory Response Syndrome blood, Systemic Inflammatory Response Syndrome diagnosis, Systemic Inflammatory Response Syndrome physiopathology, Thrombosis diagnostic imaging, Thrombosis physiopathology, Tomography, X-Ray Computed, Treatment Outcome, Vascular Patency, Aortic Aneurysm, Abdominal surgery, Blood Vessel Prosthesis Implantation adverse effects, Endovascular Procedures adverse effects, Systemic Inflammatory Response Syndrome etiology, Thrombosis etiology
- Abstract
Objective: The objective of this study was to evaluate the impact of contrast medium volume, inferior mesenteric artery (IMA) patency, and pre-existing as well as new-onset thrombus on the inflammatory response after elective endovascular aneurysm repair (EVAR)., Methods: The study included 87 patients undergoing elective endovascular repair of asymptomatic infrarenal aneurysms between January 2011 and November 2011. The patency of the IMA was determined by preoperative computed tomography angiography; the volume of the contrast medium used during the procedure was measured, and the volumes of chronic mural as well as new-onset thrombus were calculated from the preoperative and postoperative computed tomography angiograms with dedicated imaging software. The results were correlated to the occurrence of postimplantation syndrome (PIS) as well as to the main clinical and laboratory components of PIS: fever; increased white blood cell (WBC) count and C-reactive protein (CRP) level; decreased platelet count; and increased interleukin (IL)-6, IL-8, and IL-10 levels., Results: Postoperatively, a statistically significant increase was recorded in the mean values of body temperature, WBCs, CRP, IL-6, IL-8, and IL-10, and a statistically significant decrease was recorded in the number of platelets. After adjustment for endograft type, the volume of new-onset thrombus was found to be significantly correlated with the peak postoperative temperature (β = .307; P < .05) and the increase in WBC count (β = .271; P < .05), CRP level (β = .484; P < .001), and IL-6 level (β = .288; P < .05). On the contrary, the volume of chronic mural thrombus, the patency of the IMA, and the volume of contrast medium were not found to significantly affect any parameter of the PIS. PIS occurred in 34 patients (39%). Multiple logistic regression analysis showed that both the volume of new-onset thrombus and the type of endograft were independently associated with the development of PIS., Conclusions: The volume of new-onset thrombus is associated with the development of PIS after EVAR, whereas chronic mural thrombus appears to be an inert material. IMA patency and contrast medium volume are irrelevant to the inflammatory response after EVAR., (Copyright © 2014 Society for Vascular Surgery. Published by Elsevier Inc. All rights reserved.)
- Published
- 2014
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36. Endograft infection and treatment with preservation of the endograft: early results in 3 cases.
- Author
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Moulakakis KG, Sfyroeras GS, Kakisis JD, Papapetrou A, Antonopoulos CN, Mantas G, Brountzos EN, and Liapis CD
- Subjects
- Aged, Aged, 80 and over, Aneurysm, Ruptured diagnosis, Aortic Aneurysm, Abdominal diagnosis, Embolization, Therapeutic, Endoleak diagnosis, Fatal Outcome, Humans, Male, Middle Aged, Surgical Wound Infection diagnosis, Surgical Wound Infection microbiology, Tomography, X-Ray Computed, Aneurysm, Ruptured surgery, Aortic Aneurysm, Abdominal surgery, Blood Vessel Prosthesis microbiology, Endoleak therapy, Stents, Surgical Wound Infection therapy
- Abstract
We present 3 cases of stent graft infection in patients who were treated with preservation of the endograft. In the first patient, the contamination of the endograft was the consequence of a bleeding aortoenteric fistula, whereas in the second patient, the endograft was implanted into a ruptured contaminated aortic aneurysm because of the patient's hemodynamic instability. In the third patient, the presence of a consistent type Ia endoleak after a chimney graft procedure followed by secondary interventions led to an infection of the stent graft. In each case, a laparotomy was performed with debridement, followed by appropriate antibiotic therapy. The first patient suffered a fatal pulmonary embolism. The other 2 patients are alive 4 and 24 months after the diagnosis of endograft infection. In unstable patients or those with severe comorbidities who cannot tolerate endograft excision and aortic reconstruction, surgical debridement followed by appropriate antibiotic therapy can be a temporary or bridging solution., (Copyright © 2014 Elsevier Inc. All rights reserved.)
- Published
- 2014
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37. Comparison of treatment strategies for thoracic endograft infection.
- Author
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Moulakakis KG, Mylonas SN, Antonopoulos CN, Kakisis JD, Sfyroeras GS, Mantas G, and Liapis CD
- Subjects
- Humans, Anti-Bacterial Agents therapeutic use, Aortic Aneurysm, Thoracic surgery, Blood Vessel Prosthesis adverse effects, Device Removal methods, Endovascular Procedures adverse effects, Practice Guidelines as Topic, Prosthesis-Related Infections therapy
- Abstract
Objective: Endograft infection after thoracic endovascular aortic repair (TEVAR) is associated with a substantial mortality rate that exceeds 70% in the largest published series. The aim of this study was to review all published reports on infection after TEVAR treated with either preservation of the endograft or surgical excision of the stent graft with the intention of providing a comparison of the safety, efficacy, and durability of the two different treatment strategies., Methods: An extensive electronic health database search was undertaken to identify all articles that were published up to December 2013 reporting on endograft infection after TEVAR. Overall, 55 patients treated with endograft preservation (group A) and 41 patients treated with endograft explantation (group B) were included in this review., Results: The most frequently isolated microorganisms were Streptococcus species (29.4%) and Staphylococcus species (29.4%). The mortality for both groups was 66.6%. The in-hospital mortality rate in group A was 42% and reached 81.8% in a mean follow-up period of 8.6 months. The in-hospital mortality rate in group B was 36.6%. Four (9.7%) further deaths due to reinfection or fistula recurrence were recorded in a mean follow-up period of 15.3 months, leading to an overall mortality of 46.3%. The meta-analysis showed a trend of better outcome with endograft explantation compared with endograft preservation (odds ratio [OR], 0.52; 95% confidence interval [CI], 0.18-1.48). In group A, a trend of better outcome was revealed when drainage and repair of the fistula were applied (OR, 2.22; 95% CI, 0.55-8.90). A trend of worse outcomes was detected in fistula patients compared with nonfistula patients (OR, 1.26; 95% CI, 0.43-3.74)., Conclusions: Endograft preservation seems not a durable option. It can be offered to patients who refuse surgery or as a palliative option or bridging procedure for severely ill patients. Compared with antibiotic therapy alone, antibiotic therapy followed by drainage and repair of the fistula may control the sepsis, providing, however, mainly a temporary benefit. The presence of fistula is a predictor of dismal outcome. Endograft explantation remains the "gold standard" of treatment. The mortality rate of surgical conversion is much higher in the presence of fistula., (Copyright © 2014 Society for Vascular Surgery. Published by Elsevier Inc. All rights reserved.)
- Published
- 2014
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38. Predictors affecting in-hospital mortality of ruptured abdominal aortic aneurysms: a Greek multicenter study.
- Author
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Antonopoulos CN, Kakisis JD, Andrikopoulos V, Dervisis K, Georgopoulos S, Giannoukas A, Kiskinis D, Machairas A, Papavassiliou V, Liapis CD, Antoniadis P, Bessias N, Giannakopoulos TG, Kaperonis E, Klonaris C, Saleptsis V, Saratzis N, Seretis K, and Tampakis C
- Subjects
- Aged, Aged, 80 and over, Aortic Aneurysm, Abdominal diagnosis, Aortic Aneurysm, Abdominal mortality, Aortic Aneurysm, Abdominal physiopathology, Aortic Rupture diagnosis, Aortic Rupture mortality, Aortic Rupture physiopathology, Area Under Curve, Blood Vessel Prosthesis Implantation adverse effects, Chi-Square Distribution, Databases, Factual, Decision Support Techniques, Endovascular Procedures adverse effects, Female, Greece, Hemodynamics, Hospitals, Public, Humans, Logistic Models, Male, Multivariate Analysis, Odds Ratio, Predictive Value of Tests, ROC Curve, Risk Factors, Time Factors, Treatment Outcome, Aortic Aneurysm, Abdominal surgery, Aortic Rupture surgery, Blood Vessel Prosthesis Implantation mortality, Endovascular Procedures mortality, Hospital Mortality
- Abstract
Background: Endovascular aortic repair (EVAR) is being used with increasing frequency for the treatment of ruptured abdominal aortic aneurysms (rAAAs), although conflicting results have been reported concerning perioperative mortality. The aim of our study was to evaluate potential difference in mortality rates between EVAR and open surgical repair (OSR) and identify independent risk factors for in-hospital mortality in rAAAs. This study also aimed to evaluate the Glasgow Aneurysm Score (GAS) in predicting in-hospital mortality. A time-trend analysis of EVAR for ruptured AAAs was also performed., Methods: Prospectively collected data from 7 public hospitals in Greece concerning rAAA repairs between January 2006 and April 2012 were analyzed. Primary outcome was in-hospital mortality. Multivariate logistic regression analysis was used to identify independent risk factors. The receiver-operator characteristic curve was used to determine the value of the GAS in predicting in-hospital death. Time-trend analysis, depicting annual changes (%), concerning EVAR for ruptured AAAs was also conducted., Results: A total of 418 patients (92.3% men, mean age = 74.3 ± 8.8) with rAAAs were recorded during the study period. Among them, 113 patients (27%) underwent EVAR. Overall in-hospital mortality was 45.2%, whereas in-hospital mortality after EVAR and OSR was 20.4% and 54.3%, respectively (P < 0.001). Multivariate analysis evidenced that hemodynamic instability (P < 0.001), OSR (P < 0.001), age ≥80 years (P < 0.001), coronary artery disease (P < 0.001), and renal insufficiency (P = 0.02) independently increased in-hospital mortality. Area under the curve of GAS was 0.80 (95% confidence interval [CI] = 0.75-0.85, P < 0.001) for OSR and 0.64 (95% CI = 0.51-0.77, P = 0.04) for EVAR. Annual increase of proportion (%) of EVAR for rupture was 5% (P = 0.004)., Conclusions: EVAR is being used with increasing frequency for the treatment of rAAAs and it appears to be associated with lower in-hospital mortality compared with OSR, after adjustment for hemodynamic instability and known atherosclerotic risk factors. Preoperative predictors of in-hospital mortality such as GAS should be probably modified in these patients., (Copyright © 2014 Elsevier Inc. All rights reserved.)
- Published
- 2014
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39. Association between carotid artery occlusion and ultrasonographic plaque type.
- Author
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Antonopoulos CN, Sfyroeras GS, Moulakakis KG, Giannakopoulos TG, Vassilopoulos I, Papapetrou A, Kakisis J, and Liapis CD
- Subjects
- Aged, Carotid Artery Diseases diagnostic imaging, Carotid Stenosis etiology, Diagnosis, Differential, Disease Progression, Female, Follow-Up Studies, Humans, Male, Plaque, Atherosclerotic complications, Retrospective Studies, Risk Factors, Carotid Artery, Internal diagnostic imaging, Carotid Stenosis diagnostic imaging, Plaque, Atherosclerotic diagnostic imaging, Ultrasonography, Doppler, Duplex methods
- Abstract
Background: Internal carotid artery (ICA) occlusion is associated with acute stroke and carries significant morbidity and mortality. The aim of this study was to examine whether ultrasonographic carotid plaque type may be associated with ICA occlusion., Methods: Two hundred eleven patients (85% men, mean age 66.0±9.5 years, 28.9% asymptomatic) with ICA occlusion were included in this case-control study. Ultrasonographic Gray-Weale plaque type (I-IV, echolucent to echogenic) characterization was obtained in both the occluded and the contralateral ICA. Univariate and conditional logistic regression analyses with 1:1 pair matching per artery were undertaken. Each contralateral carotid artery with stenosis was treated as control to the ipsilateral-occluded ICA of the same patient., Results: A total of 261 ICAs (61.9%) were recorded with type I-II plaque, of which 165 (63.2%) were among the occluded and 96 (36.8%) were among the contralateral ICAs with stenosis (P<0.001). Mean contralateral ICA stenosis was 58.2%±20.4%. Regression analysis showed that carotid plaque type I-II was significantly associated with carotid artery occlusion compared with plaque type III-IV (crude odds ratio [OR]=4.29, 95% confidence intervals [CI]=2.81-6.57%, P<0.001, adjusted OR=5.60, 95% CI=3.23-9.70, P<0.001). Previous neurological events did not seem to be significantly associated with plaque echolucency (OR=0.62, 95% CI=0.29-1.35, P=0.23)., Conclusions: A significant association between echolucent plaque and ICA occlusion was observed. This observational hypothesis may prompt for further investigation of the causal mechanism between carotid plaque type and ICA occlusion by larger cohort studies., (Copyright © 2014 Elsevier Inc. All rights reserved.)
- Published
- 2014
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40. Reply: To PMID 23317524.
- Author
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Moulakakis KG, Sfyroeras GS, Antonopoulos CN, Kakisis J, and Liapis CD
- Subjects
- Female, Humans, Male, Aortic Aneurysm, Abdominal surgery, Blood Vessel Prosthesis, Blood Vessel Prosthesis Implantation instrumentation, Endovascular Procedures instrumentation, Inflammation etiology, Stents
- Published
- 2013
- Full Text
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41. Epidemiological patterns and preventability of traumatic hand amputations among adults in Greece.
- Author
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Panagopoulou P, Antonopoulos CN, Dessypris N, Kanavidis P, Michelakos T, and Petridou ET
- Subjects
- Accidents, Home prevention & control, Age Distribution, Aged, Aged, 80 and over, Disabled Persons statistics & numerical data, Female, Finger Injuries epidemiology, Finger Injuries prevention & control, Greece epidemiology, Hand Injuries complications, Humans, Male, Middle Aged, Occupational Injuries prevention & control, Population Surveillance, Risk Factors, Surveys and Questionnaires, Young Adult, Accidents, Home statistics & numerical data, Amputation, Traumatic epidemiology, Amputation, Traumatic prevention & control, Emergency Service, Hospital statistics & numerical data, Hand Injuries epidemiology, Hand Injuries prevention & control, Occupational Injuries epidemiology
- Abstract
Introduction: Hand/finger amputations though rare account for significant disability and health-related costs; yet, information on underlying causes, springing mostly from physicians' reports, is rather anecdotal. We sought to draw attention to the high preventable fraction of hand/finger amputations among adults in Greece., Patients and Methods: Data on external cause of injury and short-term outcome, recorded over nine years in the Emergency Department Injury Surveillance System (EDISS) were analysed, whereas sample weights were used for nationwide extrapolations., Results: Hand/finger injuries accounted for 20.4% (N = 57,986) among 284,705 injuries recorded in patients >14-year-old (3% annual probability); 728 (1.3%) resulted in amputations; the estimated incidence rate (IR) was 39.3/100,000 person-years, reaching a high 92.6/100,000 among males aged 45-64 years. As expected, the vast majority of victims were males (90%), frequently young immigrants; ∼two-thirds sustained occupational injuries during working hours. Objects most frequently involved included: machinery (57% overall/69% occupational), means of transport (10.4%), materials (9.5%), parts of buildings/furniture (5%). Wood-working was the most common risk factor (20% overall/28% occupational) whereas 6% of victims accepted own inattention. 30% of amputations were hospitalised whereas 10% transferred to specialised units., Discussion: Specialised registries reveal the magnitude and specific causes of disabling hand injuries and point to tailored national injury prevention programs; specifically in Greece, as they occur in more controlled occupational environments among middle-aged males, woodworkers, and are caused mainly by machinery., Conclusions: Increased management of safety in the workplace could play a role in reduction in hand amputations., (Copyright © 2012 Elsevier Ltd. All rights reserved.)
- Published
- 2013
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42. The impact of endograft type on inflammatory response after endovascular treatment of abdominal aortic aneurysm.
- Author
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Moulakakis KG, Alepaki M, Sfyroeras GS, Antonopoulos CN, Giannakopoulos TG, Kakisis J, Karakitsos P, and Liapis CD
- Subjects
- Aged, Analysis of Variance, Aortic Aneurysm, Abdominal mortality, Biomarkers blood, Blood Vessel Prosthesis Implantation adverse effects, Blood Vessel Prosthesis Implantation mortality, Body Temperature Regulation, Chi-Square Distribution, Elective Surgical Procedures, Endovascular Procedures adverse effects, Endovascular Procedures mortality, Female, Humans, Inflammation blood, Inflammation immunology, Inflammation mortality, Inflammation physiopathology, Inflammation Mediators blood, Interleukin-10 blood, Interleukin-6 blood, Interleukin-8 blood, Leukocyte Count, Male, Platelet Count, Prospective Studies, Prosthesis Design, Risk Factors, Time Factors, Treatment Outcome, Up-Regulation, Aortic Aneurysm, Abdominal surgery, Blood Vessel Prosthesis, Blood Vessel Prosthesis Implantation instrumentation, Endovascular Procedures instrumentation, Inflammation etiology, Stents
- Abstract
Objective: To evaluate the impact of endograft type on the inflammatory response after elective endovascular repair of abdominal aortic aneurysms., Methods: From January 2011 to November 2011, we included 100 consecutive patients who underwent elective abdominal aortic aneurysm endovascular repair. Thirteen patients were excluded from the analysis: four with cancer, three with autoimmune disease, two because of recent infection, two who were receiving long-term anti-inflammatory medication, and two because of recent surgery. Temperature, white blood cell count, platelet count, and serum concentrations of cytokines (interleukin [IL]-6, IL-8, and IL-10) were measured preoperatively, 24 hours postoperatively, and 48 hours postoperatively. The study sample was divided into four groups with respect to the type of endograft used: group A, n = 28 (Anaconda; Sulzer Vascutek, Bad Soden, Germany); group B, n = 26 (Zenith; Cook Inc, Bloomington, Ind); group C, n = 23 (Excluder; W. L. Gore and Assoc, Flagstaff, Ariz); and group D, n = 10 (Endurant; Medtronic, Minneapolis, Minn). Endograft configurations included bifurcated grafts only., Results: Epidemiologic characteristics, atherosclerotic risk factors, type of anesthesia, mean blood loss during surgery, and baseline serum levels of cytokines did not differ among the four groups. Mean elevated temperature was more pronounced postoperatively in group A. Serum levels of IL-6 and IL-10 were significantly higher 24 hours and 48 hours postoperatively compared with preoperative levels in all groups. Patients in group C showed the smallest increase in levels of serum IL-6 and IL-10 at 24 hours and 48 hours postoperatively. Mean difference in cytokine levels after aneurysm exclusion was greater for group A vs group C (P < .01) compared with group A vs B (P < .05). No differences in the mortality and morbidity rates were observed among the four groups., Conclusions: Endograft type appears to influence the inflammatory response after endovascular aortic repair. The postimplantation syndrome was apparent during the first 24 hours and decreased afterward. Anaconda and Zenith endografts induced a more intense inflammatory response. A "milder" inflammatory activation was observed in patients with an Excluder endograft. The postimplantation syndrome was not associated with perioperative adverse clinical events showing a benign course. The possible long-term sequelae of postimplantation syndrome require further investigation., (Copyright © 2013 Society for Vascular Surgery. Published by Mosby, Inc. All rights reserved.)
- Published
- 2013
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