197 results on '"G. Koning"'
Search Results
2. Sepsis in the acute phase of Charcot requiring prompt surgical treatment
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Ahmed Algharib, Giel G. Koning, Lourina M.C. van Dortmont, and Rüdiger Möller
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Acute ,Arthropathy ,Charcot ,Diabetic ,Foot ,Infection ,Surgery ,RD1-811 - Published
- 2024
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3. Eversion technique versus traditional carotid endarterectomy with patch angioplasty: a systematic review with meta-analyses and trial sequential analysis
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Martijn S. Marsman, Jørn Wetterslev, Patrick W.H.E. Vriens, Ronald L.A.W. Bleys, Abdelkarime Kh. Jahrome, Frans L. Moll, Frederik Keus, Michel M.P.J. Reijnen, and Giel G. Koning
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Carotid endarterectomy ,Systematic review ,Eversion technique ,Patch ,Stenosis ,Blood pressure ,Surgery ,RD1-811 - Abstract
Introduction: The use of an ‘eversion’ technique is not unequivocally proven to be superior to carotid endarterectomy with patch angioplasty. An up-to-date systematic review is needed for evaluation of benefits and harms of these two techniques. Methods: RCTs comparing eversion technique versus endarterectomy with patch angioplasty in patients with a symptomatic and significant (≥50 %) stenosis of the internal carotid artery were enrolled. Primary outcomes were all-cause mortality rate, health-related quality of life and serious adverse events. Secondary outcomes included 30-day stroke and mortality rate, (a) symptomatic arterial occlusion or restenosis, and adverse events not critical for decision making. Results: Four RCTs were included with 1272 surgical procedures for carotid stenosis; eversion technique n = 643 and carotid endarterectomy with patch closure n = 629. Meta-analysis comparing both techniques showed, with a very low certainty of evidence, that eversion technique might decrease the number of patients with serious adverse events (RR 0.47; 95% CI 0.34 to 0.64; p ≤ 0.01). However, no difference was found on the other outcomes. TSA demonstrated that the required information sizes were far from being reached for these patient-important outcomes. All patient-relevant outcomes were at low certainty of evidence according to GRADE. Conclusions: This systematic review showed no conclusive evidence of any difference between eversion technique and carotid endarterectomy with patch angioplasty in carotid surgery. These conclusions are based on data obtained in trials with very low certainty according to GRADE and should therefore be interpreted cautiously. Until conclusive evidence is obtained, the standard of care according to ESVS guidelines should not be abandoned.
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- 2023
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4. Innovative atherectomy device for treatment of iliac and popliteal lesions in patients with critical ischemic stage of PAOD
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Giel G. Koning, Rüdiger Möller, and Ahmed Algharib
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Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Published
- 2024
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5. Carotid endarterectomy with patch angioplasty versus primary closure in patients with symptomatic and significant stenosis: a systematic review with meta-analyses and trial sequential analysis of randomized clinical trials
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Martijn S. Marsman, Jørn Wetterslev, Abdelkarime Kh. Jahrome, Christian Gluud, Frans L. Moll, Frederik Keus, and Giel G. Koning
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Carotid stenosis ,Carotid endarterectomy ,Patch ,Systematic review ,Primary closure ,Trial sequential analysis ,Medicine - Abstract
Abstract Background Patch angioplasty in conventional carotid endarterectomy is suggested to reduce the risk of restenosis and recurrent ipsilateral stroke compared with primary closure. A systematic review of randomized clinical trials is needed to compare outcomes (benefits and harms) of both techniques. Methods Searches (CENTRAL, PubMed/MEDLINE, EMBASE, and other databases) were last updated 3rd of January 2021. We included randomized clinical trials comparing carotid endarterectomy with patch angioplasty versus primary closure of the arterial wall in patients with a symptomatic and significant (> 50%) carotid stenosis. Primary outcomes are defined as all-cause mortality and serious adverse events. Results We included 12 randomized clinical trials including 2187 participants who underwent 2335 operations for carotid stenosis comparing carotid endarterectomy with patch closure (1280 operations) versus carotid endarterectomy with primary closure (1055 operations). Meta-analysis comparing carotid endarterectomy with patch angioplasty versus carotid endarterectomy with primary closure may potentially decrease the number of patients with all-cause mortality (RR 0.53; 95% CI 0.26 to 1.08; p = 0.08, best-case scenario for patch), serious adverse events (RR 0.73; 95% CI 0.56 to 0.96; p = 0.02, best-case scenario for patch), and the number of restenosis (RR 0.41; 95% CI 0.23 to 0.71; p < 0.01). Trial sequential analysis demonstrated that the required information sizes were far from being reached for these patient-important outcomes. All the patient-relevant outcomes were at low certainty of evidence according to The Grading of Recommendations Assessment, Development, and Evaluation. Conclusions This systematic review showed no conclusive evidence of a difference between carotid endarterectomy with patch angioplasty versus primary closure of the arterial wall on all-cause mortality,
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- 2021
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6. An Unexpected Case of Late Fatal Central Venous Catheter Sepsis: A Case Report
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Rosanne Ottevanger, Sverre A.I. Loggers, Unsal Yapici, Joost M.R. Meijer, and Giel G. Koning
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central venous catheter ,sepsis ,endovascular ,infectious catheter ,complication ,vascular ,Surgery ,RD1-811 - Abstract
Introduction Central venous catheters (CVC) are associated with risks and complications. Complications like vessel perforation, thrombosis, infection with significant morbidity and mortality, knotting, and ventricular perforation have been described. Another less-frequent complication is retained CVC fragments. We present a case of a very late but fatal complication after a CVC placement. This report is written in line with the consensus-based surgical case report guidelines (SCARE). Case A 46-year-old male presented to the emergency department in a critical (septic) shock. The patients' medical history featured a long–intensive care admission 28 years ago. The cause of this sepsis was not evident until a computed tomography scan was performed to exclude a pulmonary embolism, revealing a remnant of a central catheter in both pulmonary arteries. Despite extensive resuscitation, the patient died within 24 hours after admission. An autopsy was performed confirming that the catheter remnant was the only possible cause of the fatal sepsis. Discussion CVC's are associated with (fatal) complications; however, retainment of remnants are described unfrequently but do occur in almost 2% of the cases. Endovascular removal of these remnants has been performed successfully and should be the first treatment of choice if removal is considered. No evidence is available that suggests that routine removal has to be attempted but some longer term complications can be expected, so awareness of possible remnants after CVC removal should exist. Conclusion Retained fragments of CVC's are rare but are described after prolonged use. This case shows that these retained intravascular fragments can cause fatal complications on the long-term. Upon removal of CVC's, there should be awareness that retainment of fragments can occur.
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- 2020
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7. Eversion technique versus conventional endarterectomy with patch angioplasty in carotid surgery: protocol for a systematic review with meta-analyses and trial sequential analysis of randomised clinical trials
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Jørn Wetterslev, Frederik Keus, Martijn S. Marsman, Patrick W.H.E. Vriens, Ronald L.A.W. Bleys, Abdelkarime Kh. Jahrome, Frans L. Moll, and Giel G. Koning
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Medicine - Abstract
Introduction Traditional carotid endarterectomy is considered to be the standard technique for prevention of a new stroke in patients with a symptomatic carotid stenosis. Use of patch angioplasty to restore the arterial wall after longitudinal endarterectomy is, to date, not unequivocally proven to be superior to eversion technique. A systematic review is needed for evaluation of benefits and harms of the eversion technique versus the traditional endarterectomy with patch angioplasty in patients with symptomatic carotid stenosis.Methods and outcomes The review will be conducted according to this protocol following the recommendations of the ‘Cochrane Handbook for Systematic Reviews’ and reported according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses. Randomised clinical trials comparing eversion technique versus endarterectomy with patch angioplasty in patients with a symptomatic stenosis of the internal carotid artery will be included. Primary outcomes are all-cause mortality rate, health-related quality of life and serious adverse events. Secondary outcomes are 30-day stroke and mortality rate, symptomatic arterial restenosis or occlusion and non-serious adverse events. The databases Cochrane Central Register of Controlled Trials, PubMed/MEDLINE and EMBASE will be searched (November 2019). We will primarily base our conclusions on meta-analyses of trials with overall low-risk of bias. We will use trial sequential analysis to assist the evaluation of imprecision in Grading of Recommendations, Assessment, Development and Evaluation. However, if pooled point estimates of all trials are similar to pooled point estimates of trials with overall low risk of bias and there is lack of a statistical significant interaction between estimates from trials with overall high risk of bias and trials with overall low risk of bias we will consider the trial sequential analysis adjusted precision of the estimate achieved in all trials as the result of our meta-analyses.Ethics and dissemination The proposed systematic review will collect and analyse data from published studies, therefore, ethical approval is not required. The results of the review will be disseminated by publication in a peer-review journal and submitted for presentation at conferences.PROSPERO registration number CRD42019119361.
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- 2020
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8. Case Series about the Changed Antiplatelet Protocol for Carotid Endarterectomy in a Teaching Hospital: More Patients with Complications?
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Martijn S. Marsman, Denise M.D. Özdemir- van Brunschot, Abdelkarime Kh Jahrome, Nic J.G.M. Veeger, Wouter J. Schuiling, Frank G. van Rooij, and Giel G. Koning
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acetylsalicylic acid ,asa ,bleeding ,carotid endarterectomy ,carotid artery ,clopidogrel ,dipyridamole ,complication ,Surgery ,RD1-811 - Abstract
Abstract Introduction In the Netherlands, clopidogrel monotherapy increasingly replaces acetylsalicylic acid and extended release dipyridamole as the first-choice antiplatelet therapy after ischemic stroke. It is unknown whether the risk of peri- and postoperative hemorrhage in carotid artery surgery is higher in patients using clopidogrel monotherapy compared with acetylsalicylic acid and extended release dipyridamole. We therefore retrospectively compared occurrence of perioperative major and (clinical relevant) minor bleedings during and after carotid endarterectomy of two groups using different types of platelet aggregation inhibition after changing our daily practice protocol in our center. Material and Methods A consecutive series of the most recent 80 carotid endarterectomy patients (November 2015–August 2017) treated with the new regime (clopidogrel monotherapy) were compared with the last 80 (January 2012–November 2015) consecutive patients treated according to the old protocol (acetylsalicylic acid and dipyridamole). The primary endpoint was any major bleeding during surgery or in the first 24 to 72 hours postoperatively. Secondary outcomes within 30 days after surgery included minor (re)bleeding postoperative stroke with persistent or transient neurological deficit, persisting or transient neuropraxia, asymptomatic restenosis or occlusion, (transient) headache. Reporting of this study is in line with the ‘Strengthening the Reporting of Observational Studies in Epidemiology’ statement. Results Although statistical differences were observed, from a clinical perspective both patients groups were comparable. Postoperative hemorrhage requiring reexploration for hemostasis occurred in none of the 80 patients in the group of the clopidogrel monotherapy (new protocol) and it occurred in one of the 80 patients (1%) who was using acetylsalicylic acid and dipyridamole (old protocol). In three patients (4%) in the clopidogrel monotherapy and one patient (1%) in the acetylsalicylic acid and extended release dipyridamole protocol an ipsilateral stroke was diagnosed. Conclusion In this retrospective consecutive series the incidence of postoperative ischemic complications and perioperative hemorrhage after carotid endarterectomy (CEA) seemed to be comparable in patients using clopidogrel monotherapy versus acetylsalicylic acid and extended release dipyridamole for secondary prevention after a cerebrovascular event. This study fuels the hypothesis that short- and midterm complications of clopidogrel and the combination acetylsalicylic acid and extended release dipyridamole are comparable.
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- 2018
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9. Emergency TREPP for Strangulated Inguinal Hernia Repair: A Consecutive Case Series
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G. G. Koning, W. J. V. Bökkerink, W. L. Akkersdijk, Jean-Pierre E. N. Pierie, T. L. R. Zwols, C. S. Andeweg, and Lifelong Learning, Education & Assessment Research Network (LEARN)
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extraperitoneal ,medicine.medical_specialty ,open preperitoneal ,lcsh:Surgery ,Posterior approach ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Outpatient clinic ,incarcerated ,Strangulated inguinal hernia ,Hernia ,Surgical treatment ,strangulated inguinal hernia ,emergency ,business.industry ,lcsh:RD1-811 ,Consecutive case series ,PROSTHETIC MESH REPAIR ,medicine.disease ,Wound infection ,Surgery ,030220 oncology & carcinogenesis ,trepp ,Original Article ,030211 gastroenterology & hepatology ,Anterior approach ,business - Abstract
Background Patients with strangulated inguinal hernia (SIH) require emergency surgical treatment. International guidelines do not specify the surgical technique of preference. Frequently, an open anterior approach such as the Lichtenstein technique is used.The TransREctus sheath Pre-Peritoneal (TREPP) technique is an alternative, open posterior approach, which has shown promising results in the elective treatment of inguinal hernias. This study aims to evaluate the feasibility and safety of the TREPP technique in the emergency setting of SIHs. Materials and Methods After medical ethical approval was warranted, all consecutive patients, who underwent emergency TREPP (e-TREPP) at a high-volume hernia institute, were retrospectively included from 2006 up to and including 2016. Data retrieved from the electronic patient files were combined with the findings during a long-term outcome physical investigation at an outpatient department visit. e-TREPP was, prior to the start of the study, defined as TREPP performed immediately at the operation room. Results Thirty-three patients underwent e-TREPP for SIH. Ten patients were clinically evaluated, ten patients were deceased, nine patients could not be contacted, and four patients did not or could not consent. Of the ten deceased patients, one patient died perioperatively due to massive aspiration followed by cardiac arrest. Nine patients died due to other causes. Two patients developed a recurrence after (after 13 days and 16 months respectively). Two patients were surgically treated for a wound infection (mesh removal in one). No patient reported chronic postoperative inguinal pain. Conclusion e-TREPP in experienced hands seems feasible and safe (Level of Evidence 4) for the treatment of patients with strangulated inguinal hernia, with percentages of postoperative complications comparable to other techniques.
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- 2020
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10. Carotid endarterectomy with patch angioplasty versus primary closure in patients with symptomatic and significant stenosis
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Abdelkarime Kh. Jahrome, Jørn Wetterslev, Martijn S. Marsman, Frederik Keus, G. G. Koning, Frans L. Moll, and Christian Gluud
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medicine.medical_specialty ,Trial sequential analysis ,Systematic Review Update ,medicine.medical_treatment ,MEDLINE ,Medicine (miscellaneous) ,Carotid endarterectomy ,Constriction, Pathologic ,030204 cardiovascular system & hematology ,law.invention ,03 medical and health sciences ,0302 clinical medicine ,Randomized controlled trial ,Restenosis ,law ,medicine ,Carotid stenosis ,Humans ,030212 general & internal medicine ,Adverse effect ,Stroke ,Carotid Stenosis/surgery ,Randomized Controlled Trials as Topic ,Endarterectomy, Carotid ,business.industry ,Angioplasty ,Consolidated Standards of Reporting Trials ,medicine.disease ,Surgery ,Stenosis ,Treatment Outcome ,GRADE ,Primary closure ,Systematic review ,Medicine ,business ,Patch - Abstract
Background Patch angioplasty in conventional carotid endarterectomy is suggested to reduce the risk of restenosis and recurrent ipsilateral stroke compared with primary closure. A systematic review of randomized clinical trials is needed to compare outcomes (benefits and harms) of both techniques. Methods Searches (CENTRAL, PubMed/MEDLINE, EMBASE, and other databases) were last updated 3rd of January 2021. We included randomized clinical trials comparing carotid endarterectomy with patch angioplasty versus primary closure of the arterial wall in patients with a symptomatic and significant (> 50%) carotid stenosis. Primary outcomes are defined as all-cause mortality and serious adverse events. Results We included 12 randomized clinical trials including 2187 participants who underwent 2335 operations for carotid stenosis comparing carotid endarterectomy with patch closure (1280 operations) versus carotid endarterectomy with primary closure (1055 operations). Meta-analysis comparing carotid endarterectomy with patch angioplasty versus carotid endarterectomy with primary closure may potentially decrease the number of patients with all-cause mortality (RR 0.53; 95% CI 0.26 to 1.08; p = 0.08, best-case scenario for patch), serious adverse events (RR 0.73; 95% CI 0.56 to 0.96; p = 0.02, best-case scenario for patch), and the number of restenosis (RR 0.41; 95% CI 0.23 to 0.71; p < 0.01). Trial sequential analysis demonstrated that the required information sizes were far from being reached for these patient-important outcomes. All the patient-relevant outcomes were at low certainty of evidence according to The Grading of Recommendations Assessment, Development, and Evaluation. Conclusions This systematic review showed no conclusive evidence of a difference between carotid endarterectomy with patch angioplasty versus primary closure of the arterial wall on all-cause mortality, Systematic review registration PROSPERO CRD42014013416. Review protocol publication 2019 DOI: 10.1136/bmjopen-2018-026419.
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- 2021
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11. O12 OPEN PREPERITONEAL INGUINAL HERNIA REPAIR, TREPP VERSUS TIPP IN A RANDOMIZED CLINICAL TRIAL
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W. L. Akkersdijk, G. G. Koning, Patrick W. Vriens, Kees van Laarhoven, W. J. V. Bökkerink, and Roland M. H. G. Mollen
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medicine.medical_specialty ,Inguinal hernia ,Randomized controlled trial ,law ,business.industry ,medicine ,Surgery ,medicine.disease ,business ,law.invention - Abstract
Aim The preperitoneal mesh position for inguinal hernia repair showed beneficial results regarding Chronic Postoperative Inguinal Pain (CPIP) with low recurrence rates. Two open preperitoneal techniques, the TransREctus Sheath PrePeritoneal (TREPP) and the TransInguinal PrePeritoneal (TIPP) technique, were compared in a randomized clinical trial with the hypothesis of less patients with CPIP after TREPP due to complete avoidance of nerve contact. Materials and Methods Adult patients with a primary unilateral inguinal hernia were randomized to either TREPP or TIPP in four hospitals. Prior to the trial’s start the study protocol was ethically approved and published. Outcomes included CPIP after 1 year (primary outcome) and recurrence rates, adverse events and Health related Quality of Life (secondary outcomes). Follow-up was performed at 2 weeks, 6 months and 1 year. Results Baseline characteristics were comparable in both groups. Pain was less often present after TREPP at 2 weeks and 6 months, but the CPIP at rest at 1 year was comparable 1.9% after TREPP vs 1.4% after TIPP, p = 0.535). The overall recurrence rate was higher in the TREPP group, 8.9% vs 4.6%, p = 0.022). Corrected for a learning curve for TREPP, no significant difference could be assessed (TREPP 5.7% and TIPP 4.8%, p = 0.591). Conclusions both the TREPP and TIPP technique resulted in a low incidence of CPIP after 1 year follow-up. The TREPP method can be considered a solid method for inguinal hernia repair if expertise is present. The learning curve of the TREPP techniques needs further evaluation.
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- 2021
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12. A comparison of technique modifications in laparoscopic donor nephrectomy: a systematic review and meta-analysis.
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Denise M D Özdemir-van Brunschot, Giel G Koning, Kees C J H M van Laarhoven, Mehmet Ergün, Sharon B C E van Horne, Maroeska M Rovers, and Michiel C Warlé
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Medicine ,Science - Abstract
ObjectiveTo compare the effectiveness of different technique modifications in laparoscopic donor nephrectomy.DesignSystematic review and meta-analyses.Data sourcesSearches of PubMed, EMBASE, Web of Science and Central from January 1st 1997 until April 1st 2014.Study designAll cohort studies and randomized clinical trials comparing fully laparoscopic donor nephrectomy with modifications of the standard technique including hand-assisted, retroperitoneoscopic and single port techniques, were included.Data-extraction and analysisThe primary outcome measure was the number of complications. Secondary outcome measures included: conversion to open surgery, first warm ischemia time, estimated blood loss, graft function, operation time and length of hospital stay. Each technique modification was compared with standard laparoscopic donor nephrectomy. Data was pooled with a random effects meta-analysis using odds ratios, weighted mean differences and their corresponding 95% confidence intervals. To assess heterogeneity, the I2 statistic was used. First, randomized clinical trials and cohort studies were analyzed separately, when data was comparable, pooled analysis were performed.Results31 studies comparing laparoscopic donor nephrectomy with other technique modifications were identified, including 5 randomized clinical trials and 26 cohort studies. Since data of randomized clinical trials and cohort studies were comparable, these data were pooled. There were significantly less complications in the retroperitoneoscopic group as compared to transperitoneal group (OR 0.52, 95%CI 0.33-0.83, I2 = 0%). Hand-assisted techniques showed shorter first warm ischemia and operation times.ConclusionsHand-assistance reduces the operation and first warm ischemia times and may improve safety for surgeons with less experience in laparoscopic donor nephrectomy. The retroperitoneoscopic approach was significantly associated with less complications. However, given the, in general, poor to intermediate quality and considerable heterogeneity in the included studies, further high-quality studies are required.Trial registrationThe review protocol was registered in the PROSPERO database before the start of the review process (CRD number 42013006565).
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- 2015
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13. Medicações referentes às complicações após correção de aneurisma da aorta abdominal endovascular Medication in relation to complications after endovascular abdominal aortic aneurysm repair
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Giel G. Koning, Roel Hobo, Robert J. F. Laheij, Jacob Buth, and J. Adam Van Der Vliet
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Aneurisma da aorta abdominal ,complicações ,Procedimentos cirúrgicos vasculares ,Contenedores ,Aortic aneurysm ,abdominal ,complications ,Vascular surgical procedures ,Stents ,Surgery ,RD1-811 ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
OBJETIVO: Este estudo observacional foi desenvolvido para pesquisar a influência dos medicamentos na ocorrência de complicações após correção endovascular de aneurismas da aorta abdominal. MÉTODO: Foram analisados retrospectivamente os dados clínicos referentes a 70 pacientes consecutivos submetidos à correção endovascular de aneurisma da aorta abdominal em dois centros cirúrgicos vasculares num período de 3 anos. As complicações eram classificadas de acordo com as recomendações do Comitê Designado de Padrões de Tratamento. Foi feita uma distinção entre complicações relacionadas ou não ao stent. Uma análise de regressão foi usada para avaliar a associação entre 12 grupos de medicamentos diferentes e o resultado da correção endovascular. RESULTADOS: Durante um acompanhamento de 70 pacientes-anos, foram relatadas 14 complicações leves (20%), 23 moderadas (33%) e sete graves (10%). Trinta pacientes (43%) que usaram cumarínicos tiveram significantemente menos complicações não relacionadas ao stent (OR. 0,21; 95% CI 0,05-0,90) comparados com os não usuários. Vinte pacientes (29%), tomando medicamentos antieméticos durante internação, mostraram quatro vezes mais complicações relacionadas ao stent (OR. 4,37; 95% CI 1,10-17,3) e o uso de analgésicos no hospital em 25 pacientes foi associado com mais complicações relacionadas ao stent (OR. 3,81; 95% CI 1,32-11,0). CONCLUSÃO: Medicações parecem estar associados com a ocorrência de complicações após terapia endovascular de aneurismas da aorta abdominal. Pacientes que usaram cumarínicos tiveram menos complicações não relacionadas ao stent. Pacientes que usaram agentes antieméticos durante internação mostraram um número quatro vezes maior de complicações não relacionadas ao stent. Pacientes usando analgésicos durante a internação eram associados com maiores complicações relacionadas ao stent.OBJECTIVE: This observational study was undertaken to explore the influence of medication on the occurrence of complications following endovascular repair of abdominal aortic aneurysms. METHODS: Clinical data concerning 70 consecutive patients undergoing elective EVAR in two vascular surgical centres over a 3 year period were analysed retrospectively. Complications were graded according to the recommendations of the Ad Hoc Committee on Reporting Standards. A distinction was made between device-related and non-related complications. An adjusted regression analysis was used to assess the association between 12 different medication groups and EVAR outcome. RESULTS: During 70 person years of follow-up 14 mild (20%), 23 moderate (33%) and 7 severe (10%) complications were recorded. Thirty patients (43%) who used coumarin derivates showed significantly less non-device-related complications (OR 0.21; 95%CI 0.05-0.90) compared to non-users. Twenty patients (29%) on anti-emetic drugs during hospital stay showed a fourfold more non-device-related complications (OR 4.37; 95%CI 1.10-17.3) and in-hospital use of analgesics in 25 patients was associated with more device-related complications (OR 3.81; 95%CI 1.32-11.0). CONCLUSION: Medication seems to be associated with the occurrence of complications following endovascular therapy of abdominal aortic aneurysms. Patients who used coumarin-derivatives experienced fewer non-device-related complications. Patients who used anti-emetic drugs during hospital-stay showed a fourfold number of non-device-related complications. Patients using analgesics during hospital stay were associated with significantly more device-related complications
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- 2006
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14. Open Preperitoneal Inguinal Hernia Repair, TREPP Versus TIPP in a Randomized Clinical Trial
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Roland M. H. G. Mollen, Robin K. Noordhof, W. J. V. Bökkerink, Mitchell Harker, G. G. Koning, Cees J. H. M. van Laarhoven, W. L. Akkersdijk, and Patrick W. Vriens
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Male ,medicine.medical_specialty ,TIPP ,Hernia, Inguinal ,law.invention ,Tumours of the digestive tract Radboud Institute for Health Sciences [Radboudumc 14] ,Quality of life ,Randomized controlled trial ,law ,open ,medicine ,Unilateral inguinal hernia ,Humans ,In patient ,Single-Blind Method ,pain ,Prospective Studies ,Trial registration ,Herniorrhaphy ,posterior ,Adult patients ,business.industry ,TREPP ,Middle Aged ,Surgical Mesh ,medicine.disease ,CPIP ,Surgery ,Inguinal hernia ,Treatment Outcome ,mesh ,Baseline characteristics ,inguinal hernia ,Esa-Randomized Controlled Trials ,Female ,Peritoneum ,business ,chronic pain ,preperitoneal ,Follow-Up Studies - Abstract
Contains fulltext : 239052.pdf (Publisher’s version ) (Open Access) OBJECTIVE: The aim of this study was to compare chronic postoperative inguinal pain (CPIP) in patients with an inguinal hernia after the TransREctus Sheath PrePeritoneal (TREPP) and the TransInguinal PrePeritoneal Technique (TIPP). BACKGROUND: The preperitoneal mesh position for inguinal hernia repair showed beneficial results regarding CPIP with low recurrence rates. Two open preperitoneal techniques, TREPP and TIPP, were compared in a randomized clinical trial with the hypothesis of fewer patients with CPIP after TREPP due to complete avoidance of nerve contact. METHODS: Adult patients with a primary unilateral inguinal hernia were randomized to either TREPP or TIPP in four hospitals. Before the trial's start the study protocol was ethically approved and published. Outcomes included CPIP after 1 year (primary outcome) and recurrence rates, adverse events, and health-related quality of life (secondary outcomes). Follow-up was performed at 2 weeks, 6 months, and 1 year. RESULTS: Baseline characteristics were comparable in both groups. Pain was less often present after TREPP at 2 weeks and 6 months, but CPIP at rest at 1 year was comparable: 1.9% after TREPP vs 1.4% after TIPP, P = 0.535). The overall recurrence rate was higher in the TREPP group, 8.9% vs 4.6%, P = 0.022). Corrected for a learning curve for TREPP, no significant difference could be assessed (TREPP 5.7% and TIPP 4.8%, P = 0.591). CONCLUSION: Both the TREPP and TIPP technique resulted in a low incidence of CPIP after 1-year follow-up. The TREPP method can be considered a solid method for inguinal hernia repair if expertise is present. The learning curve of the TREPP techniques needs further evaluation. TRIAL REGISTRATION: ISRCTN18591339.
- Published
- 2021
15. Emergency autologous vein graft reconstruction after using a vascular closure device Reconstrução de emergência de enxerto autólogo de veia após uso de dispositivo de fechamento vascular
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Giel G Koning, Nasir A Sayed, and J. Adam Van Der Vliet
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Artéria Ilíaca ,Artéria Femoral ,Arteriosclerose ,Angiografia ,Angioplasty ,Iliac Artery ,Femoral Artery ,Arteriosclerosis ,Angiography ,Surgery ,RD1-811 ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
An emergency operation for access related acute critical limb ischemia with signs of infection is described. Inguinal femoral reconstruction was performed with a bifurcated graft constructed from the ipsilateral saphenous vein.Uma operação de emergência relacionada à isquemia aguda com sinais de infecção é descrita. Reconstrução femoral inguinal foi realizada com um enxerto bifurcado feito a partir da veia safena ipsilateral.
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- 2011
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16. Plexus anesthesia versus general anesthesia for carotid endarterectomy: A systematic review with meta-analyses
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A.Kh. Jahrome, G. G. Koning, J.M.M. Heyligers, Frederik Keus, F.L. Moll, D. van Aalst, Martijn S. Marsman, Jørn Wetterslev, P. W. H. E. Vriens, and F.G. van Rooij
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Local anesthesia ,medicine.medical_treatment ,Plexus ,Carotid endarterectomy ,law.invention ,03 medical and health sciences ,0302 clinical medicine ,Randomized controlled trial ,law ,medicine.artery ,Medicine ,General ,Stroke ,Systematic Review / Meta-analysis ,Stenosis ,business.industry ,General Medicine ,medicine.disease ,Systematic review ,030220 oncology & carcinogenesis ,Anesthesia ,030211 gastroenterology & hepatology ,Surgery ,Internal carotid artery ,business - Abstract
Introduction Traditional carotid endarterectomy is considered to be the standard technique for prevention of a new stroke in patients with a symptomatic carotid stenosis. Use of plexus anesthesia or general anesthesia in traditional carotid endarterectomy is, to date, not unequivocally proven to be superior to one other. A systematic review was needed for evaluation of benefits and harms to determine which technique, plexus anesthesia or general anesthesia is more effective for traditional carotid endarterectomy in patients with symptomatic carotid stenosis. Methods The review was conducted according to our protocol following the recommendations of Cochrane and reported according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses. Searches were updated on the October 1, 2020. We did not find any randomized clinical trial comparing plexus anesthesia and general anesthesia in carotid endarterectomy with patch angioplasty matching our protocol criteria in patients with a symptomatic and significant (≥50%) carotid stenosis. Conclusions Based on the current, high risk of bias evidence, we concluded there is a need for new randomized clinical trials with overall low risk of bias comparing plexus anesthesia with general anesthesia in carotid endarterectomy with patch closure of the arterial wall in patients with a symptomatic and significant (≥50%) stenosis of the internal carotid artery. Protocol unique identification number (UIN): CRD42019139913, (https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=139913), Highlights • No conclusive evidence in plexus versus general anesthesia in carotid endarterectomy. • We recommend one or more randomized clinical trials on this subject forfilling CONSORT statements. • Individual patient datasharing is important to increase sample sizes for future reviews.
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- 2021
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17. The totally extraperitoneal method versus Lichtenstein's technique for inguinal hernia repair: a systematic review with meta-analyses and trial sequential analyses of randomized clinical trials.
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G G Koning, J Wetterslev, C J H M van Laarhoven, and F Keus
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Medicine ,Science - Abstract
BackgroundLichtenstein's technique is considered the reference technique for inguinal hernia repair. Recent trials suggest that the totally extraperitoneal (TEP) technique may lead to reduced proportions of chronic pain. A systematic review evaluating the benefits and harms of the TEP compared with Lichtenstein's technique is needed.Methodology/principal findingsThe review was performed according to the 'Cochrane Handbook for Systematic Reviews'. Searches were conducted until January 2012. Patients with primary uni- or bilateral inguinal hernias were included. Only trials randomising patients to TEP and Lichtenstein were included. Bias evaluation and trial sequential analysis (TSA) were performed. The error matrix was constructed to minimise the risk of systematic and random errors. Thirteen trials randomized 5404 patients. There was no significant effect of the TEP compared with the Lichtenstein on the number of patients with chronic pain in a random-effects model risk ratio (RR 0.80; 95% confidence interval (CI) 0.61 to 1.04; p = 0.09). There was also no significant effect on number of patients with recurrences in a random-effects model (RR 1.41; 95% CI 0.72 to 2.78; p = 0.32) and the TEP technique may or may not be associated with less severe adverse events (random-effects model RR 0.91; 95% CI 0.73 to 1.12; p = 0.37). TSA showed that the required information size was far from being reached for patient important outcomes.Conclusions/significanceTEP versus Lichtenstein for inguinal hernia repair has been evaluated by 13 trials with high risk of bias. The review with meta-analyses, TSA and error matrix approach shows no conclusive evidence of a difference between TEP and Lichtenstein on the primary outcomes chronic pain, recurrences, and severe adverse events.
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- 2013
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18. A clinical evaluation of statin pleiotropy: statins selectively and dose-dependently reduce vascular inflammation.
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Evelien van der Meij, Giel G Koning, Patrick W Vriens, Marcel F Peeters, C Arnoud Meijer, Kim E Kortekaas, Ronald L Dalman, J Hajo van Bockel, Roeland Hanemaaijer, Teake Kooistra, Robert Kleemann, and Jan H N Lindeman
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Medicine ,Science - Abstract
Statins are thought to reduce vascular inflammation through lipid independent mechanisms. Evaluation of such an effect in atherosclerotic disease is complicated by simultaneous effects on lipid metabolism. Abdominal aortic aneurysms (AAA) are part of the atherosclerotic spectrum of diseases. Unlike atherosclerotic occlusive disease, AAA is not lipid driven, thus allowing direct evaluation of putative anti-inflammatory effects. The anti-inflammatory potency of increasing doses (0, 20 or 40 mg/day) simvastatin or atorvastatin was evaluated in 63 patients that were at least 6 weeks on statin therapy and who underwent open AAA repair. A comprehensive analysis using immunohistochemistry, mRNA and protein analyses was applied on aortic wall samples collected during surgery. The effect of statins on AAA growth was analyzed in a separate prospective study in incorporating 142 patients. Both statins equally effectively and dose-dependently reduced aortic wall expression of NFκB regulated mediators (i.e. IL-6 (P
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- 2013
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19. Correction: The Totally Extraperitoneal Method versus Lichtenstein's Technique for Inguinal Hernia Repair: A Systematic Review with Meta-Analyses and Trial Sequential Analyses of Randomized Clinical Trials.
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G. G. Koning, J. Wetterslev, C. J. H. M. van Laarhoven, and F. Keus
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Medicine ,Science - Published
- 2013
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20. Patients’ perspective on inguinal hernia repair: A focus group study
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G. G. Koning, Patrick W. Vriens, W. J. V. Bökkerink, and Jolanda De Vries
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medicine.medical_specialty ,business.industry ,General surgery ,Perspective (graphical) ,Hernia, Inguinal ,Focus Groups ,medicine.disease ,Focus group ,Inguinal hernia ,Surveys and Questionnaires ,medicine ,Humans ,Surgery ,business ,Herniorrhaphy - Published
- 2021
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21. Eversion technique versus conventional endarterectomy with patch angioplasty in carotid surgery
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Ronald L. A. W. Bleys, Frans L. Moll, Martijn S. Marsman, G. G. Koning, Abdelkarime Kh. Jahrome, Frederik Keus, Jørn Wetterslev, and P. W. H. E. Vriens
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LIMITATIONS ,medicine.medical_specialty ,OCCLUSION ,medicine.medical_treatment ,MEDLINE ,Carotid endarterectomy ,SYMPTOMATIC PATIENTS ,GUIDELINES ,vascular surgery ,STENOSIS ,MONITORING BOUNDARIES ,Bias ,medicine.artery ,medicine ,Humans ,Carotid Stenosis ,Stroke ,Endarterectomy ,Randomized Controlled Trials as Topic ,RISK ,Endarterectomy, Carotid ,CEREBRAL-ISCHEMIA ,business.industry ,Data Collection ,Angioplasty ,General Medicine ,Vascular surgery ,medicine.disease ,stroke ,Clinical trial ,Systematic review ,Carotid Arteries ,GRADE ,Emergency medicine ,DESIGN CHARACTERISTICS ,Quality of Life ,Surgery ,Internal carotid artery ,business ,head & neck surgery - Abstract
IntroductionTraditional carotid endarterectomy is considered to be the standard technique for prevention of a new stroke in patients with a symptomatic carotid stenosis. Use of patch angioplasty to restore the arterial wall after longitudinal endarterectomy is, to date, not unequivocally proven to be superior to eversion technique. A systematic review is needed for evaluation of benefits and harms of the eversion technique versus the traditional endarterectomy with patch angioplasty in patients with symptomatic carotid stenosis.Methods and outcomesThe review will be conducted according to this protocol following the recommendations of the ‘Cochrane Handbook for Systematic Reviews’ and reported according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses. Randomised clinical trials comparing eversion technique versus endarterectomy with patch angioplasty in patients with a symptomatic stenosis of the internal carotid artery will be included. Primary outcomes are all-cause mortality rate, health-related quality of life and serious adverse events. Secondary outcomes are 30-day stroke and mortality rate, symptomatic arterial restenosis or occlusion and non-serious adverse events. The databases Cochrane Central Register of Controlled Trials, PubMed/MEDLINE and EMBASE will be searched (November 2019). We will primarily base our conclusions on meta-analyses of trials with overall low-risk of bias. We will use trial sequential analysis to assist the evaluation of imprecision in Grading of Recommendations, Assessment, Development and Evaluation. However, if pooled point estimates of all trials are similar to pooled point estimates of trials with overall low risk of bias and there is lack of a statistical significant interaction between estimates from trials with overall high risk of bias and trials with overall low risk of bias we will consider the trial sequential analysis adjusted precision of the estimate achieved in all trials as the result of our meta-analyses.Ethics and disseminationThe proposed systematic review will collect and analyse data from published studies, therefore, ethical approval is not required. The results of the review will be disseminated by publication in a peer-review journal and submitted for presentation at conferences.PROSPERO registration numberCRD42019119361.
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- 2020
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22. Case Series about the Changed Antiplatelet Protocol for Carotid Endarterectomy in a Teaching Hospital: More Patients with Complications?
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G. G. Koning, Frank G. van Rooij, Denise M. D. Özdemir-van Brunschot, Nic J. G. M. Veeger, Martijn S. Marsman, Abdelkarime Kh. Jahrome, and Wouter J. Schuiling
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medicine.medical_specialty ,medicine.medical_treatment ,Vascular damage Radboud Institute for Health Sciences [Radboudumc 16] ,dipyridamole ,lcsh:Surgery ,complication ,Carotid endarterectomy ,030204 cardiovascular system & hematology ,Asymptomatic ,03 medical and health sciences ,0302 clinical medicine ,medicine ,030212 general & internal medicine ,cardiovascular diseases ,Stroke ,clopidogrel ,asa ,business.industry ,carotid artery ,Perioperative ,lcsh:RD1-811 ,acetylsalicylic acid ,medicine.disease ,Clopidogrel ,Disorders of movement Donders Center for Medical Neuroscience [Radboudumc 3] ,bleeding ,Surgery ,Dipyridamole ,Hemostasis ,Original Article ,medicine.symptom ,business ,Complication ,carotid endarterectomy ,medicine.drug - Abstract
Introduction In the Netherlands, clopidogrel monotherapy increasingly replaces acetylsalicylic acid and extended release dipyridamole as the first-choice antiplatelet therapy after ischemic stroke. It is unknown whether the risk of peri- and postoperative hemorrhage in carotid artery surgery is higher in patients using clopidogrel monotherapy compared with acetylsalicylic acid and extended release dipyridamole. We therefore retrospectively compared occurrence of perioperative major and (clinical relevant) minor bleedings during and after carotid endarterectomy of two groups using different types of platelet aggregation inhibition after changing our daily practice protocol in our center. Material and Methods A consecutive series of the most recent 80 carotid endarterectomy patients (November 2015–August 2017) treated with the new regime (clopidogrel monotherapy) were compared with the last 80 (January 2012–November 2015) consecutive patients treated according to the old protocol (acetylsalicylic acid and dipyridamole). The primary endpoint was any major bleeding during surgery or in the first 24 to 72 hours postoperatively. Secondary outcomes within 30 days after surgery included minor (re)bleeding postoperative stroke with persistent or transient neurological deficit, persisting or transient neuropraxia, asymptomatic restenosis or occlusion, (transient) headache. Reporting of this study is in line with the ‘Strengthening the Reporting of Observational Studies in Epidemiology’ statement. Results Although statistical differences were observed, from a clinical perspective both patients groups were comparable. Postoperative hemorrhage requiring reexploration for hemostasis occurred in none of the 80 patients in the group of the clopidogrel monotherapy (new protocol) and it occurred in one of the 80 patients (1%) who was using acetylsalicylic acid and dipyridamole (old protocol). In three patients (4%) in the clopidogrel monotherapy and one patient (1%) in the acetylsalicylic acid and extended release dipyridamole protocol an ipsilateral stroke was diagnosed. Conclusion In this retrospective consecutive series the incidence of postoperative ischemic complications and perioperative hemorrhage after carotid endarterectomy (CEA) seemed to be comparable in patients using clopidogrel monotherapy versus acetylsalicylic acid and extended release dipyridamole for secondary prevention after a cerebrovascular event. This study fuels the hypothesis that short- and midterm complications of clopidogrel and the combination acetylsalicylic acid and extended release dipyridamole are comparable.
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- 2018
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23. Comment to: transrectus sheath pre-peritoneal (TREPP) procedure versus totally extraperitoneal (TEP) procedure and Lichtenstein technique—a propensity-score-matched analysis in Dutch high-volume regional hospitals
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Jean-Pierre E. N. Pierie, E. Jutte, Nic J. G. M. Veeger, M. J. W. Möllers, D. A. Hess, P. H. J. M. Veldman, G. G. Koning, H. T. Brandsma, N. Slagter, T. L. R. Zwols, H. H. Eker, and Lifelong Learning, Education & Assessment Research Network (LEARN)
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MESH REPAIR ,medicine.medical_specialty ,Hernia, Inguinal ,Controlled studies ,INGUINAL-HERNIA ,Recurrence ,Inguinal hernia repair ,Surgical site ,medicine ,Humans ,Herniorrhaphy ,Pain, Postoperative ,Open preperitoneal ,business.industry ,Significant difference ,Gold standard ,Chronic pain ,TREPP ,Surgical Mesh ,medicine.disease ,Hospitals ,Groin hernia ,Surgery ,Inguinal hernia ,Treatment Outcome ,TEP ,Propensity score matching ,Original Article ,Laparoscopy ,Lichtenstein ,TRIAL ,Peritoneum ,business ,Hospitals, High-Volume ,CHRONIC PAIN ,Abdominal surgery ,Volume (compression) - Abstract
Purpose Results of the most commonly used inguinal hernia repair techniques often originate from expert centers or from randomized controlled studies. In this study, we portray daily-practice results of a high-volume, regional surgical group in the Netherlands, comparing TREPP (open (posterior) transrectus sheath pre-peritoneal) with Lichtenstein (open anterior) and TEP (endoscopic (posterior) totally extraperitoneal). We hypothesize that the TREPP shows more favorable outcome compared to the current gold standard procedures: TEP and Lichtenstein. Methods Between January 2016 and December 2018, 3285 consecutive patients underwent surgical treatment and were included for analysis. The outcome measures were postoperative pain, recurrence rate and other surgical complications. Propensity-score matching was used to address potential selection bias. Results After propensity-score matching, there was no statistically significant difference in postoperative pain in the TREPP group compared to the Lichtenstein group (TREPP 7.3% versus Lichtenstein 6.3%; p = 0.67) nor in TREPP compared to TEP (TREPP 7.4% versus TEP 4.1%; p = 0.064). There was no statistically significant difference in recurrences in the TREPP group compared to Lichtenstein (3.8% vs 2.5%; p = 0.42), nor in the TREPP versus TEP comparison (3.9% vs 2.8%; p = 0.55) Conclusion This study compares TREPP with Lichtenstein and TEP in the presence of postoperative pain, recurrences and other adverse outcomes. After propensity-score matching, no statistically significant difference in postoperative pain or recurrences remained between either TREPP compared to Lichtenstein, or TREPP compared to TEP. Based on these results, TREPP, Lichtenstein and TEP showed comparable results in postoperative pain, recurrences and other surgical site complications.
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- 2021
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24. Developing water and sanitation services in refugee settings from emergency to sustainability – the case of Zaatari Camp in Jordan
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P. T. de Bakker, W. J. G. Koning, A. W. C. van der Helm, F. Coloni, and A. Bhai
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Sanitation ,sanitation ,Refugee ,Population ,0211 other engineering and technologies ,02 engineering and technology ,infrastructure ,010501 environmental sciences ,Development ,01 natural sciences ,Unit (housing) ,Urban planning ,11. Sustainability ,Project management ,education ,wastewater ,Waste Management and Disposal ,Environmental planning ,0105 earth and related environmental sciences ,Water Science and Technology ,021110 strategic, defence & security studies ,education.field_of_study ,cost effectiveness ,business.industry ,drinking water ,public health ,1. No poverty ,Public Health, Environmental and Occupational Health ,sustainability ,Pollution ,refugee camp ,6. Clean water ,Stakeholder management ,Sustainability ,Business ,Water resource management - Abstract
Three years after Zaatari camp was established in the Hashemite Kingdom of Jordan, to host Syrian refugees, its population has grown to 82,000 persons. Zaatari is one of the largest refugee camps in the world, in one of the most water scarce areas on earth. Since its establishment, drinking water has been delivered by trucks to communal facilities across the camp. Wastewater is trucked out from these facilities, and from unregulated, self-constructed wastewater storages next to family households. In order to improve long-term sustainability in all aspects: equitable water and sanitation access, public health risks and environmental impact and operational costs, water and sewage systems with household connections are being implemented. In this shift from emergency to sustainable phase, urban infrastructure selection and design methods were found to be beneficial and adapted for the situation. Aspects such as stakeholder management and project management, throughout design and implementation phases, are vital and similar to the planning processes of urban water utilities. Potential for further sustainability lies in the development of operation and maintenance and administrative strategy to reflect and maximise the significant investment. Therefore, a shift is necessary from a humanitarian approach toward a more structured vision based on master planning. Quality control of the entire process and outputs requires a project management unit. The long term master planning perspective of urban development and urban utility perspective of operational sustainability is determined to be essential in the conception of water and sanitation schemes in Zaatari refugee camp
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- 2017
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25. Plexus anesthesia versus general anesthesia in patients for carotid endarterectomy with patch angioplasty: Protocol for a systematic review with meta-analyses and Trial Sequential Analysis of randomized clinical trials
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Frans L. Moll, G. G. Koning, F.G. van Rooij, J.M.M. Heyligers, Martijn S. Marsman, A.Kh. Jahrome, P. W. H. E. Vriens, Jørn Wetterslev, Frederik Keus, and D. van Aalst
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medicine.medical_treatment ,MEDLINE ,Carotid endarterectomy ,SYMPTOMATIC PATIENTS ,030230 surgery ,GUIDELINES ,law.invention ,03 medical and health sciences ,MONITORING BOUNDARIES ,0302 clinical medicine ,Randomized controlled trial ,law ,medicine ,QUALITY ,030212 general & internal medicine ,Stroke ,ERROR ,RISK ,Protocol (science) ,business.industry ,medicine.disease ,Confidence interval ,Stenosis ,GRADE ,Systematic review ,BIAS ,Anesthesia ,DESIGN CHARACTERISTICS ,Surgery ,business ,Research Paper - Abstract
Highlights • Protocol based on aspects of the Cochrane Handbook and reported according to PRISMA. • TSA compared with GRADE assessments of RCTs are included. • Low number of included RCTs may cause uncertain conclusions. • Comprehensive search strategy, to retrieve a broad spectrum of relevant articles. • To reduce clinical heterogeneity, one technique be compared to one other technique., Introduction Traditional carotid endarterectomy is considered to be the standard technique for prevention of a new stroke in patients with a symptomatic carotid stenosis. Use of plexus anesthesia or general anesthesia in traditional carotid endarterectomy is, to date, not unequivocally proven to be superior to one other. A systematic review is needed for evaluation of benefits and harms to determine which technique, plexus anesthesia or general anesthesia is more effective for traditional carotid endarterectomy in patients with symptomatic carotid stenosis. Methods and outcomes The review will be conducted according to this protocol following the recommendations of the ‘Cochrane Handbook for Systematic Reviews’ and reported according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses. Randomized Clinical Trials comparing plexus anesthesia versus general anesthesia in traditional carotid endarterectomy will be included. Primary outcomes will be postoperative death and/ or stroke (
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- 2019
26. A prescription trend analysis of methylphenidate: relation to study reports on efficacy
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Jeannette Doornenbal, Laura Batstra, Catharina C. M. Schuiling-Veninga, Maruschka Sluiter, Jens H. J. Bos, Eelko Hak, Peter de Jonge, Lotte G. Koning, Ymkje Anna de Vries, Youth, Education and Society, Developmental Psychology, Developmental and behavioural disorders in education and care: assessment and intervention, PharmacoTherapy, -Epidemiology and -Economics, and Real World Studies in PharmacoEpidemiology, -Genetics, -Economics and -Therapy (PEGET)
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Male ,medicine.medical_specialty ,STIMULANT MEDICATION ,Adolescent ,Dose ,CHILDREN ,methylphenidate ,Prescription data ,prescription trends ,03 medical and health sciences ,0302 clinical medicine ,mta ,medicine ,adhd ,Humans ,Attention deficit hyperactivity disorder ,030212 general & internal medicine ,adolescents ,Practice Patterns, Physicians' ,Medical prescription ,Child ,Psychiatry ,Netherlands ,OUTCOMES ,Dose-Response Relationship, Drug ,Methylphenidate ,business.industry ,Health Policy ,medicatie ,Public Health, Environmental and Occupational Health ,medicine.disease ,Drug Utilization ,030227 psychiatry ,Psychiatry and Mental health ,Trend analysis ,Prescriptions ,Attention Deficit Disorder with Hyperactivity ,Child, Preschool ,Practice Guidelines as Topic ,Central Nervous System Stimulants ,Female ,Pshychiatric Mental Health ,business ,FOLLOW-UP ,medicine.drug - Abstract
Use of methylphenidate in children has increased substantially, despite conflicting evidence regarding efficacy. In this study, prescription data were analyzed in relation to the publication of new evidence regarding efficacy. Incidence rates and prescribed doses of methylphenidate increased, with a decline during the last few years. Duration of use is still increasing. In half of the cases, starting dosages are higher than recommended in guidelines. There was little evidence that publication of new evidence directly influenced the use of methylphenidate. Recent and critical study findings should receive more attention to contribute to the development and use of treatment guidelines for ADHD and evidence-based methylphenidate use.
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- 2019
27. Soybean Seedcoat Mottling: Association with Soybean mosaic virus and Phomopsis spp. Seed Infection
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Said A. Ghabrial, G. Koning, and D. M. TeKrony
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biology ,Inoculation ,Potyviridae ,Potyvirus ,food and beverages ,Soybean mosaic virus ,Plant Science ,Fungi imperfecti ,Elisa assay ,biology.organism_classification ,Horticulture ,Phomopsis ,Botany ,Cultivar ,Agronomy and Crop Science - Abstract
Soybean mosaic virus (SMV) infection predisposes soybean (Glycine max) seed to Phomopsis spp. seed infection and may induce seedcoat mottling. The extent of seedcoat mottling associated with the accumulation of SMV or Phomopsis spp. infection of the seedcoat was investigated in 1996 and 1997. Plants of two SMV-susceptible cultivars, ‘Clark’ and ‘Williams’, were sap inoculated with the G2 strain of SMV at growth stage R2. Control plants (SMV-resistant isolines L78-434 and L78-379, respectively) were not inoculated. Harvested seed were evaluated visually for seedcoat mottling and sorted into four categories (severe, banded, blemish, and none) according to the degree of seedcoat pigmentation. Seed infection with Phomopsis spp. was determined and SMV accumulation was assessed by enzyme-linked immunosorbent assay and nucleic acid hybridization analysis. Phomopsis spp. were isolated from seed of all mottling categories, with the incidence of infection increasing as the degree of seedcoat mottling increased. SMV was detected in both mottled and nonmottled seedcoats, with generally higher levels of SMV in mottled seedcoats. However, the relationship of SMV titer to seedcoat mottling was inconsistent across cultivars and years. Thus, the extent of seedcoat mottling was not directly related to the accumulation of SMV in the seedcoat.
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- 2019
28. Long-term results from a randomized comparison of open transinguinal preperitoneal hernia repair and the Lichtenstein method (TULIP trial)
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P. W. H. E. Vriens, W. J. V. Bökkerink, D. Malagic, C.J.H.M. van Laarhoven, L. van Hout, and G. G. Koning
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Adult ,Male ,medicine.medical_specialty ,Adolescent ,medicine.medical_treatment ,Hernia, Inguinal ,030230 surgery ,law.invention ,03 medical and health sciences ,Young Adult ,Tumours of the digestive tract Radboud Institute for Health Sciences [Radboudumc 14] ,0302 clinical medicine ,All institutes and research themes of the Radboud University Medical Center ,Randomized controlled trial ,Quality of life ,law ,Recurrence ,medicine ,Humans ,Hernia ,Young adult ,Herniorrhaphy ,Aged ,Pain Measurement ,Aged, 80 and over ,Pain, Postoperative ,Groin ,business.industry ,Chronic pain ,Original Articles ,Middle Aged ,medicine.disease ,Hernia repair ,Surgery ,Inguinal hernia ,medicine.anatomical_structure ,Treatment Outcome ,030220 oncology & carcinogenesis ,Quality of Life ,Original Article ,Female ,Chronic Pain ,Peritoneum ,business ,Follow-Up Studies - Abstract
Background The short-term results of the TULIP trial comparing transinguinal preperitoneal (TIPP) inguinal hernia repair with the Lichtenstein method have been reported with follow-up of 1 year. After TIPP repair, fewer patients had chronic postoperative inguinal pain (CPIP); they had better health status and lower costs. The present study reports the long-term outcomes of this trial. Methods All surviving patients initially randomized in the TULIP trial were contacted. Patients were interviewed by telephone and sent a questionnaire. Those reporting any complaints were invited for outpatient review. Chronic pain, hernia recurrence and reoperation were documented, along with any sensory change or disturbance of sexual activity. Results Of 302 patients initially randomized, 251 (83·1 per cent) were included in the analysis (119 TIPP, 132 Lichtenstein), with a median follow-up of 85 (range 74–117) months. Of 25 patients with chronic postoperative inguinal pain after 1 year, only one, who underwent Lichtenstein repair, still had groin pain at long-term follow-up. The overall hernia recurrence rate was 2·8 per cent (7 patients), with no difference between the groups. Conclusion Both TIPP and Lichtenstein hernia repairs are durable. Patients with chronic postoperative inguinal pain after 1 year can be reassured that the groin pain tends to fade over time.
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- 2019
29. Surgical interventions for the management of chronic groin pain after hernia repair (postherniorrhaphy inguinodynia) in adults
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Willem Ar Zwaans, Giel G Koning, Rudi M. H. Roumen, Marc R. Scheltinga, Maarten van Kleef, and Kurinchi Selvan Gurusamy
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Medicine General & Introductory Medical Sciences ,medicine.medical_specialty ,Groin ,business.industry ,medicine.medical_treatment ,General surgery ,education ,030230 surgery ,Hernia repair ,03 medical and health sciences ,0302 clinical medicine ,medicine.anatomical_structure ,surgical procedures, operative ,030220 oncology & carcinogenesis ,medicine ,Pharmacology (medical) ,business ,Surgical interventions - Abstract
This is a protocol for a Cochrane Review (Intervention). The objectives are as follows: To assess the efficacy and safety of surgical interventions for the management of groin pain as a consequence of previous inguinal hernia repair in adults.
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- 2018
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30. Inguinal Hernia: Post OP Chronic Pain
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G. G. Koning, Marc R. Scheltinga, X Z Meng, Agneta Montgomery, Rudi M. H. Roumen, Xiaoming Li, S. Smedberg, R Roumen, L Pilz, C Lu, Gabriel Sandblom, Z F Yang, T van Assen, Hiroaki Hata, Ioannis Karampinis, F Herrle, Tim Verhagen, Dan Sevonius, M. J. A. Loos, Jeffrey P. Weiss, W. J. V. Bökkerink, C.J.H.M. van Laarhoven, J A G M Brouns, Y Z Chong, R. M. Roumen, L Q Meng, R. Matsusue, Willem A. R. Zwaans, Stefan Post, H Y Zhao, I. Ikai, W Z Shen, J G Liu, Tetsushi Otani, M Scheltinga, F Yang, W F Xiao, Christel Perquin, M. Narita, J. W. Murphy, Takashi Yamaguchi, and W H Zheng
- Subjects
Inguinal hernia ,medicine.medical_specialty ,business.industry ,Chronic pain ,medicine ,MEDLINE ,Surgery ,medicine.disease ,business ,Abdominal surgery - Published
- 2015
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31. Polysoft Patch for Inguinal Hernia Repair
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Philippe Ngo, Edouard Pelissier, and Giel G. Koning
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medicine.medical_specialty ,Inguinal hernia ,medicine.anatomical_structure ,Preperitoneal space ,business.industry ,medicine ,business ,medicine.disease ,Inguinal canal ,Spermatic cord ,Surgery - Published
- 2017
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32. Carotid endarterectomy with primary closure versus patch angioplasty in patients with symptomatic and significant stenosis: protocol for a systematic review with meta-analyses and trial sequential analysis of randomised clinical trials
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G. G. Koning, Martijn S. Marsman, Abdelkarime Khodadade Jahrome, Jørn Wetterslev, Christian Gluud, Frederik Keus, Frans L. Moll, and Amine Karimi
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LIMITATIONS ,medicine.medical_specialty ,OCCLUSION ,medicine.medical_treatment ,Carotid endarterectomy ,GUIDELINES ,vascular surgery ,Asymptomatic ,03 medical and health sciences ,MONITORING BOUNDARIES ,0302 clinical medicine ,Meta-Analysis as Topic ,Restenosis ,Protocol ,medicine ,Humans ,QUALITY ,Carotid Stenosis ,030212 general & internal medicine ,Adverse effect ,ERROR ,Randomized Controlled Trials as Topic ,RISK ,Endarterectomy, Carotid ,CEREBRAL-ISCHEMIA ,business.industry ,Angioplasty ,vascular medicine ,General Medicine ,Vascular surgery ,medicine.disease ,stroke ,Clinical trial ,Stenosis ,GRADE ,Systematic review ,Research Design ,DESIGN CHARACTERISTICS ,Emergency medicine ,Surgery ,medicine.symptom ,business ,030217 neurology & neurosurgery ,Systematic Reviews as Topic - Abstract
IntroductionUse of patch angioplasty in carotid endarterectomy (CEA) is suggested to reduce the risk of restenosis and recurrent ipsilateral stroke. The objective is to conduct a systematic review with meta-analysis and trial sequential analysis as well as Grading of Recommendations Assessment, Development and Evaluation (GRADE) assessments comparing the benefits and harms of CEA with primary closure of the arterial wall versus CEA with patch angioplasty in patients with a symptomatic and significant carotid stenosis.Methods and analysisThe review shall be conducted according to this published protocol following the recommendations of the ‘Cochrane’ and reported according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement. Randomised clinical trials comparing CEA with primary closure of the arterial wall versus CEA with patch angioplasty (regardless of used patch materials) in human adults with a symptomatic and significant carotid stenosis will be included. Primary outcomes are all-cause mortality at maximal follow-up, health-related quality of life and serious adverse events. Secondary outcomes are symptomatic or asymptomatic arterial occlusion or restenosis, and non-serious adverse events. We will primarily base our conclusions on meta-analyses of trials with overall low risk of bias. However, if pooled point estimates of all trials are similar to pooled point estimates of trials with overall low risk of bias and there is lack of a statistical significant interaction between estimates from trials with overall high risk of bias and trials with overall low risk of bias we will consider the precision achieved in all trials as the result of our meta-analyses.Ethics and disseminationThe proposed systematic review will collect and analyse secondary data from published studies therefor ethical approval is not required. The results of the systematic review will be disseminated by publication in a peer-review journal and submitted for presentation at relevant conferences.PROSPERO registration numberCRD42014013416.
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- 2019
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33. Health status one year after TransInguinal PrePeritoneal inguinal hernia repair and Lichtenstein’s method
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G. G. Koning, L. Koeslag, P. W. H. E. Vriens, J. de Vries, C.J.H.M. van Laarhoven, George F. Borm, and Medical and Clinical Psychology
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Adult ,Male ,medicine.medical_specialty ,Time Factors ,medicine.medical_treatment ,Health Status ,Quality of nursing and allied health care [NCEBP 6] ,Hernia, Inguinal ,law.invention ,Clinical study ,Randomized controlled trial ,Double-Blind Method ,law ,Surveys and Questionnaires ,medicine ,Humans ,Hernia ,Herniorrhaphy ,Aged ,Pain, Postoperative ,business.industry ,General surgery ,Middle Aged ,Surgical Mesh ,Hernia repair ,medicine.disease ,Surgery ,Evaluation of complex medical interventions Quality of Care [NCEBP 2] ,Inguinal hernia ,Surgical mesh ,Evaluation of complex medical interventions [NCEBP 2] ,Female ,Anterior approach ,Chronic Pain ,business ,Abdominal surgery ,Follow-Up Studies - Abstract
BackgroundThe Lichtenstein technique is the treatment of first choice according to guidelines for primary inguinal hernia treatment. Postoperative chronic pain has been reported as complication in 15–40 % after Lichtenstein’s repair. The postoperative effects on health status after open preperitoneal hernia repair have hardly been examined. Development of an open technique that combines the safe anterior approach of the Lichtenstein with the ‘promising’ preperitoneal soft mesh position was done; the transinguinal preperitoneal (TIPP) mesh repair. A double-blind prospective randomized controlled trial (TULIP trial, ISRCTN93798494) was conducted to compare different outcome parameters after TIPP or Lichtenstein, one parameter is topic of evaluation in this paper; the health status after TIPP and Lichtenstein for inguinal hernia repair.MethodsThe study protocol has been published. It was hypothesized that the health status of inguinal hernia patients would be better after the TIPP repair compared with the Lichtenstein technique. The size of this study was based on chronic pain as primary outcome measure. Three hundred and two patients were randomized. Patients and the outcome assessors were blinded. Follow-up was scheduled after 14 days, 3 months, and 1 year. The three dimensions of possible errors were warranted.ResultsWith regard to health status, significant differences were found in the dimensions ‘physical pain’ [difference: 6.1 (95 % CI 2.3–9.9, p = 0.002)] and ‘physical functioning’ [difference: 3.5 (95 % CI 0.5–6.7, p = 0.023)], favoring the TIPP patients after 1 year.ConclusionIn conclusion, the SF-36 ‘physical function’ and ‘physical pain’ dimensions after TIPP show significant better patient outcomes at 1 year compared with the Lichtenstein patients in this trial. These differences are in line with reported significant differences in less patients with postoperative chronic pain after TIPP compared with Lichtenstein at 1 year.Keywords: Inguinal hernia, Preperitoneal, TIPP, Lichtenstein, Health status
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- 2013
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34. The TREPP as alternative technique for recurrent inguinal hernia after Lichtenstein's repair: A consecutive case series
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G. G. Koning, C.J.H.M. van Laarhoven, W. L. Akkersdijk, W. J. V. Bökkerink, and A.M. (Alexandra) Persoon
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Adult ,Male ,medicine.medical_specialty ,Hernia, Inguinal ,03 medical and health sciences ,Tumours of the digestive tract Radboud Institute for Health Sciences [Radboudumc 14] ,0302 clinical medicine ,Postoperative Complications ,Recurrence ,Medicine ,Outpatient clinic ,Humans ,030212 general & internal medicine ,Herniorrhaphy ,Transabdominal preperitoneal ,Aged ,Retrospective Studies ,Aged, 80 and over ,Recurrent Inguinal Hernia ,Recurrent Hernia ,business.industry ,General surgery ,Spinal anesthesia ,Anterior repair ,General Medicine ,Consecutive case series ,Middle Aged ,Surgical Mesh ,medicine.disease ,Surgery ,Inguinal hernia ,030220 oncology & carcinogenesis ,Female ,business ,Follow-Up Studies - Abstract
Contains fulltext : 175665.pdf (Publisher’s version ) (Closed access) BACKGROUND: Recurrent inguinal hernias after initial repair with mesh are preferably treated via an alternative route (e.g. posterior after anterior). For recurrent inguinal hernias after an anterior repair such as Lichtenstein's, an endoscopic approach such as the total extraperitoneal or transabdominal preperitoneal technique (TEP or TAPP) is recommended if expertise is present. The TransREctus sheath PrePeritoneal (TREPP) technique is a promising open posterior technique and could be an alternative to endoscopic methods. This study aims to evaluate the results of the TREPP technique for recurrent inguinal hernia. MATERIALS AND METHODS: Consecutive patients who underwent a TREPP repair for recurrent hernia after initial operation according to Lichtenstein were included in a retrospective manner. A minimum of one year follow-up after the TREPP repair was maintained. Data retrieved from the patient files were combined with the findings at an outpatient department visit. RESULTS: Between January 2006 and December 2013 fifty-two patients were eligible for inclusion of which 38 patients were clinically evaluated. The mean follow-up of these thirty-eight patients was 65 months (range 17-108 months) in which 2 patients had developed a re-recurrence. One patient reported chronic postoperative inguinal pain (CPIP) since the TREPP and four patients experienced CPIP since the primary inguinal hernia repair. Peri-operative and
- Published
- 2016
35. Comment to: The transinguinal preperitoneal technique (TIPP) in inguinal hernia repair does not cause less chronic pain in relation to the ProGrip technique: a prospective double-blind randomized clinical trial comparing the TIPP technique, using the PolySoft mesh, with the ProGrip self-fixing semi-resorbable mesh. D. Čadanová, J. P. van Dijk, R. M. H. G. Mollen
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P. Ngo, G G Koning, and E P Pélissier
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medicine.medical_specialty ,Hernia, Inguinal ,030230 surgery ,law.invention ,Double blind ,03 medical and health sciences ,0302 clinical medicine ,Randomized controlled trial ,Double-Blind Method ,law ,Tetrahydroisoquinolines ,medicine ,Humans ,Hernia ,Prospective Studies ,Prospective cohort study ,Herniorrhaphy ,Pain, Postoperative ,business.industry ,Chronic pain ,Surgical Mesh ,medicine.disease ,Surgery ,Inguinal hernia ,Surgical mesh ,030220 oncology & carcinogenesis ,Anesthesia ,Chronic Pain ,business ,Oligopeptides ,Abdominal surgery - Published
- 2016
36. Digital Ischemia in a Young Woman after Minor Wrist Trauma-A Rare Diagnosis and an Innovative Multidisciplinary Treatment
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Leo J. Schultze Kool, Tjerk de Nijs, Rein Ketelaars, G. G. Koning, Gerard A. Rongen, Han J. Bonenkamp, and Bouke J. Koeneman
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medicine.medical_specialty ,Patient care team ,medicine.diagnostic_test ,business.industry ,Vascular damage Radboud Institute for Health Sciences [Radboudumc 16] ,Treatment outcome ,Ischemia ,030230 surgery ,Wrist ,medicine.disease ,Healthcare improvement science Radboud Institute for Health Sciences [Radboudumc 18] ,Peripheral ,Surgery ,Reconstructive and regenerative medicine Radboud Institute for Health Sciences [Radboudumc 10] ,03 medical and health sciences ,0302 clinical medicine ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,Angiography ,medicine ,Radiology, Nuclear Medicine and imaging ,Young adult ,Cardiology and Cardiovascular Medicine ,business ,Acute ischemic stroke - Abstract
acute ischemic stroke. These catheters are designed for aspiration in small-caliber cerebral vessels and therefore are well suited for the distal tibial and plantar arteries or even smaller vessels in the extremities. The case we have described of a recanalization obtained in a very distal peripheral district with an excellent outcome is a good example of the utility of this system beyond acute ischemic stroke.
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- 2016
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37. Teaching the transrectus sheath preperiotneal mesh repair: TREPP in 9 steps
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Johan F. M. Lange, W. L. Akkersdijk, C.J.H.M. van Laarhoven, C. S. Andeweg, G. G. Koning, W. J. V. Bökkerink, and Surgery
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Adult ,Male ,medicine.medical_specialty ,medicine.medical_treatment ,Teaching module ,Rectus Abdominis ,Hernia, Inguinal ,030230 surgery ,Prosthesis Implantation ,Tumours of the digestive tract Radboud Institute for Health Sciences [Radboudumc 14] ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Humans ,Hernia ,Herniorrhaphy ,Mesh repair ,business.industry ,General surgery ,General Medicine ,Rectus sheath ,Middle Aged ,Surgical Mesh ,Inguinal hernia surgery ,Hernia repair ,medicine.disease ,Inguinal hernia ,medicine.anatomical_structure ,Learning curve ,030220 oncology & carcinogenesis ,Female ,Surgery ,business ,Learning Curve - Abstract
Background: The preperitoneal mesh position seems preferable to reduce the number of patients with postoperative chronic pain after inguinal hernia surgery. The transrectus sheath preperitoneal mesh repair (TREPP) is gaining popularity. Teaching a new technique requires a standardized approach to achieve an optimal learning curve. The aim of this paper was to provide a step-by-step teaching module for hernia surgeons learning the TREPP. Methods: Literature was critically reviewed and the forthcoming nine surgical steps of the new TREPP technique and its rationale are described in this article. The TREPP hernia repair technique is illustrated with an online education video and three photos of the anatomical landmarks and the proposed mesh position of TREPP. Results: The nine steps of TREPP are described extensively and the critical steps are presented in a standardized way for surgical educational purposes. Also the rationale and technical considerations of inguinal hernia experts are presented. Discussion: TREPP may be a promising technique for groin hernia surgery. To date there have been no major complications with the TREPP repair which is currently the subject of a RCT. The learning curve of TREPP is being investigated and teaching of this technique requires standardization for trainee surgeons. Conclusion: TREPP potentially merges the advantages of a preperitoneal positioned mesh with an open technique. Initial results are promising and TREPP seems to be applicable in different hospitals in the Netherlands. Since the start of an active teaching program, TREPP has been introduced and accepted well by dedicated hernia surgeons in other hospitals in the Netherlands and Europe. (c) 2016 Published by Elsevier Ltd on behalf of IJS Publishing Group Ltd.
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- 2016
38. Comment to: Recurrence mechanisms after inguinal hernia repair by the Onstep technique: a case series
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G. G. Koning, Frederik Berrevoet, and Pwhe Vriens
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medicine.medical_specialty ,business.industry ,General surgery ,030230 surgery ,medicine.disease ,Surgery ,03 medical and health sciences ,Inguinal hernia ,0302 clinical medicine ,030220 oncology & carcinogenesis ,medicine ,business ,Abdominal surgery - Published
- 2017
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39. Lactotripeptides do not lower ambulatory blood pressure in untreated whites: results from 2 controlled multicenter crossover studies
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Richard Draijer, Kim van der Zander, Linda A. J. Van Mierlo, and Mettina M. G. Koning
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Male ,medicine.medical_specialty ,Ambulatory blood pressure ,Cultured Milk Products ,Systole ,Medicine (miscellaneous) ,Hemodynamics ,Angiotensin-Converting Enzyme Inhibitors ,Blood Pressure ,Placebo ,White People ,Excretion ,chemistry.chemical_compound ,Animal science ,Diastole ,Humans ,Medicine ,Cross-Over Studies ,Nutrition and Dietetics ,Lactotripeptides ,business.industry ,Circadian Rhythm ,Surgery ,Blood pressure ,chemistry ,Ambulatory ,Potassium ,Female ,business ,Oligopeptides - Abstract
BACKGROUND: Dietary factors directly influence blood pressure (BP). The lactotripeptides (LTPs) IPP (isoleucine-proline-proline) and VPP (valine-proline-proline), formed by hydrolyzing dairy proteins, and potassium, a mineral mainly found in fruit, vegetables, and dairy products, are extensively studied for their BP-lowering effect. The efficacy of LTPs seems modest in whites compared with that in Asians. OBJECTIVE: The objective was to study the effects of enzymatically produced LTPs alone or in combination with potassium on ambulatory BP in whites. DESIGN: Two multicenter, placebo-controlled, randomized, crossover studies were conducted; each consisted of two 4-wk intervention periods separated by a 4-wk washout period. In study 1, 69 subjects received 200 g/d of a dairy drink with 5.8 mg IPP and 4.4 mg VPP or placebo. In study 2, 93 subjects received 100 g/d of a dairy drink with 2.7 mg IPP, 1.9 mg VPP, and 350 mg added K or placebo. The subjects were randomly assigned according to their daytime ambulatory BP. RESULTS: Mean 24-h systolic and diastolic BP (baseline values--study 1: 137.1/81.6 mm Hg; study 2: 139.2/80.9 mm Hg) remained similar with no significant differences between treatments in either study (P > 0.10). Office BP decreased over the course of both studies (systolic BP > 5 mm Hg), but differences between interventions were not significant (P > 0.10). In both studies, nighttime BP dipped during all treatments (greater-than-or-equal15%) but was statistically more significant with placebo (P < 0.05). Sodium excretion increased significantly after consumption of LTPs and potassium compared with after placebo intervention (P = 0.01), but not after consumption of LTPs alone. CONCLUSION: The data do not support a BP-lowering effect of LTPs in whites.
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- 2009
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40. Enzymatically hydrolyzed lactotripeptides do not lower blood pressure in mildly hypertensive subjects
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Peter W. de Leeuw, Kim van der Zander, Michiel L. Bots, Annette A. A. Bak, Mettina M. G. Koning, and University of Groningen
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Adult ,Male ,medicine.medical_specialty ,Urinalysis ,Cultured Milk Products ,Systole ,ASPERGILLUS-ORYZAE PROTEASE ,Medicine (miscellaneous) ,Hemodynamics ,Angiotensin-Converting Enzyme Inhibitors ,Blood Pressure ,Urine ,Placebo ,Excretion ,CASEIN HYDROLYSATE ,chemistry.chemical_compound ,Double-Blind Method ,Diastole ,Internal medicine ,Medicine ,Humans ,Treatment Failure ,Aged ,Netherlands ,SOUR MILK ,Creatinine ,ANTIHYPERTENSIVE PEPTIDES ,Nutrition and Dietetics ,Lactotripeptides ,medicine.diagnostic_test ,business.industry ,Middle Aged ,RANDOMIZED CONTROLLED-TRIAL ,FERMENTED MILK ,Yogurt ,Surgery ,Blood pressure ,Endocrinology ,chemistry ,LACTOBACILLUS-HELVETICUS ,Hypertension ,Female ,business ,Peptides ,Oligopeptides - Abstract
Background: Several placebo-controlled clinical studies suggest that products containing isoleucyl-prolyl-proline and valyl-prolylproline are able to lower blood pressure without adverse effects. The most efficient way of producing high concentrations of these lacto-tripeptides (LTPs) is enzymatic hydrolysis of dairy protein (casein) with the use of a mixture of several enzymes derived from the nongenetically modified organism Aspergillus oryzae, including proteases and peptidases. To date, no large studies of the blood pressure-lowering properties of enzymatically produced LTP (ELTP) powder in European populations have been published.Objective: This study was performed to evaluate the hypothesis that consumption of ELTP in a yogurt beverage for 8 wk significantly lowers blood pressure.Design: In this multicenter, double-blind, parallel, placebo-controlled trial, office blood pressure was evaluated in 275 Dutch hypertensive subjects. Blood pressures and body weight were measured on several days at baseline and at weeks 4 and 8 of the intervention between 2.5 and 3 h after intake of the test product. Twenty-four-h urine samples were collected at baseline and at the end of the intervention for urinalysis of sodium, potassium, creatinine, and microalbumin excretion.Results: The results showed that 10.2 mg ELTP/d does not lead to a reduction in systolic blood pressure (P = 0.66) or diastolic blood pressure (P = 0.72) compared with placebo.Conclusion: This study showed no effect of an ELTP-enriched yogurt beverage on blood pressure in hypertensive subjects in a fairly large study. Am J Clin Nutr 2008; 88: 1697-702.
- Published
- 2008
41. In-One-Continuity Rectal Excision and Anal Mucosectomy of a Giant Villous Adenoma: An Alternative Surgical Approach
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P.L. Rensma, G. G. Koning, A.W.M. van Milligen de Wit, and C.J.H.M. van Laarhoven
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Villous adenoma ,medicine.medical_specialty ,Renal failure ,medicine.medical_treatment ,Rectum ,Colonoscopy ,Rectal surgery ,Anastomosis ,Published: May 2008 ,Medicine ,McKittrick-Wheelock syndrome ,lcsh:RC799-869 ,Rectal Villous Adenoma ,medicine.diagnostic_test ,Dehydration ,business.industry ,Rectal villous adenoma ,Gastroenterology ,Microsurgery ,medicine.disease ,Total mesorectal excision ,Surgery ,medicine.anatomical_structure ,Electrolyte disorders ,lcsh:Diseases of the digestive system. Gastroenterology ,business ,Hyponatremia - Abstract
Background: The authors present a woman suffering from McKittrick-Wheelock syndrome (MKWS) with a giant rectal villous adenoma. MKWS is a rare disorder caused by fluid and electrolyte hypersecretion from a rectal tumor. The most frequently reported tumors are villous adenomas. Symptoms of dehydration with severe hyponatremia, hypokalemia, metabolic acidosis and acute renal failure are typical in MKWS. Several options for operation have been reported, such as a transsacral approach (according to Kraske), transanal endoscopic microsurgery (TEM) or total mesorectal excision (TME). In this case we report an alternative surgical approach: in-one-continuity transanal mucosectomy and transabdominal TME with a handsewn colonic-anal anastomosis. Case: A 54-year-old woman had a history of hospital admissions because of repeated bouts of dehydration with electrolyte disorders since 2004. At admission she presented with prerenal azotemia, hyponatremia and severe hypokalemia in combination with watery stools. At colonoscopy an 8-cm villous adenoma was seen in the rectum. Dehydration and electrolyte disturbances were treated by appropriate intravenous fluid administration. An in-one-continuity anal mucosectomy and complete rectal excision were performed and restored by a handmade colonic-anal anastomosis. Postoperative recovery was uneventful. Conclusion: MKWS can be a difficult problem to assess in both gastroenterological and nephrological ways. Patients may develop severe complications which require surgical intervention in some cases. In-one-continuity transanal mucosectomy and rectum excision with a handmade colonic-anal anastomosis seemed to be a new and solid surgical therapeutic option in this case.
- Published
- 2008
42. Angiotensin Converting Enzyme Inhibitory Peptides from a Lactotripeptide-Enriched Milk Beverage Are Absorbed Intact into the Circulation1
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Thea M. M. G. Koning, Joris Kloek, Evelyne E. Meynen, Martin Foltz, Veronique Bianco, and Chris van Platerink
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medicine.medical_specialty ,Meal ,Nutrition and Dietetics ,biology ,Lactotripeptides ,Area under the curve ,Medicine (miscellaneous) ,Angiotensin-converting enzyme ,Placebo ,Crossover study ,Bioavailability ,chemistry.chemical_compound ,Endocrinology ,chemistry ,Internal medicine ,biology.protein ,medicine ,Ingestion ,Food science - Abstract
Food products containing angiotensin converting enzyme (ACE) inhibitory peptides reportedly play a role in treatment of mild hypertension. The aim of this placebo-controlled crossover study was to assess the bioavailability of Ile-Pro-Pro and 7 other ACE-inhibiting peptides present in a lactotripeptide (LTP)-enriched yogurt beverage and whether meal intake affects Ile-Pro-Pro bioavailability. Six male and female subjects randomly consumed an LTP-enriched yogurt beverage or a placebo in the fasted state and an LTP-enriched yogurt beverage in the fed or fasted state. The area under the curve (AUC) of Ile-Pro-Pro after the LTP treatment in the fasted state was 2.1-fold of that after the placebo treatment (P < 0.001). The maximum peptide plasma concentration (C(max)) value was greater after consumption of the LTP-enriched beverage (897 +/- 157 pmol/L) than after the placebo treatment (555 +/- 0.09 pmol/L; P < 0.001) with a greater time after ingestion when reaching C(max) (T(max)) in the placebo treatment. Plasma concentrations of the peptides Leu-Trp, Phe-Tyr, Ile-Tyr, and Leu-Pro-Pro increased compared with baseline (P < 0.05) in the LTP-enriched and placebo treatment when consumed in the fasted state. However, DeltaC(max) values differed significantly between the placebo and LTP-enriched treatment only for Leu-Pro-Pro. Meal intake affected Ile-Pro-Pro concentrations. When the beverage was consumed after a meal, the AUC of Ile-Pro-Pro was 1.3-fold (P < 0.05) of the AUC derived from premeal intake. This was due to an increase in the plasma elimination half-life (P < 0.05); C(max) and T(max) were not affected by meal intake. In summary, this is the first demonstration, to our knowledge, that the tripeptide Ile-Pro-Pro selectively escapes from intestinal degradation and reaches the circulation undegraded.
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- 2007
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43. [A woman with acute pain and swelling of her wrist]
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Jannemarie A M, de Ridder and Giel G, Koning
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Adult ,Diagnosis, Differential ,Wrist Joint ,Hematoma ,Pressure ,Edema ,Humans ,Female ,Acute Pain ,Carpal Tunnel Syndrome ,Magnetic Resonance Imaging ,Median Nerve - Abstract
After hyperextension of both her wrists, a 39-year-old woman, who used coumarin derivatives for a known antiphospholipid syndrome, had acute pain and swelling of the left wrist. She had symptoms of an acute carpal tunnel syndrome. MRI revealed a hematoma compressing the median nerve in the carpal tunnel.
- Published
- 2015
44. [A woman with a rare vascular malformation]
- Author
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Giel G, Koning and Mattijs, de Vries
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Adult ,Vena Cava, Superior ,Vascular Malformations ,Humans ,Female ,Trisomy ,Chromosomes, Human, Pair 8 - Abstract
A 30-year-old woman with trisomy 8 syndrome and coagulopathy was diagnosed with a malformation of the vena cava superior. This is a rare anatomical variation, which originates from a non-development of Marshall's ligament during the 8th week of gestation (prevalence: 0.3%).
- Published
- 2015
45. MOLECULAR GENETIC STUDIES ON PEARS (PYRUS SPP.) IN THE WESTERN CAPE
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Z. Simayi, S. Booi, M.C. Selala, M.M. van Dyk, M.G. du Preez, R. Maharaj, I. F. Labuschagne, G. Koning, L. Warnich, and D. J. G. Rees
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Western cape ,Zoology ,Horticulture ,Biology - Published
- 2005
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46. DEVELOPMENT OF MICROSATELLITE MARKERS FOR MARKER-ASSISTED BREEDING IN PEARS (PYRUS SPP.)
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M.C. Selala, D. J. G. Rees, S. Booi, G. Koning, Z. Simayi, R. Maharaj, and M.M. van Dyk
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Genetics ,Microsatellite ,Horticulture ,Biology - Published
- 2005
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47. Comment to 'One-stop endoscopic hernia surgery: efficient and satisfactory' Voorbrood et al. Hernia 19:395-400
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G. G. Koning, W. J. V. Bökkerink, and W. L. Akkersdijk
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Male ,medicine.medical_specialty ,business.industry ,General surgery ,Hernia, Inguinal ,030230 surgery ,medicine.disease ,Surgery ,Reconstructive and regenerative medicine Radboud Institute for Health Sciences [Radboudumc 10] ,Tumours of the digestive tract Radboud Institute for Health Sciences [Radboudumc 14] ,03 medical and health sciences ,0302 clinical medicine ,Hernia surgery ,Ambulatory Surgical Procedures ,medicine ,Humans ,Female ,Hernia ,030212 general & internal medicine ,business ,Herniorrhaphy ,Abdominal surgery - Abstract
Contains fulltext : 172161.pdf (Publisher’s version ) (Closed access)
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- 2016
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48. Oral Presentations—Abstracts
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M. Bartsch, D. K. F. Meijer, G. L. Scherphof, J. A. A. M. Kamps, S. Erdoğan, A. Y. Özer, B. Caner, H. Bilgili, L. M. Ickenstein, K. Edwards, G. Karlsson, L. D. Mayer, Crispin G. S. Eley, Ning Hu, Gerard M. Jensen, K. Kawahara, A. Sekiguchi, E. Kiyoki, K. Morimoto, O. C. Boerman, M. Miyajima, J. Kimura, G. A. Koning, H. W. M. Morselt, Josbert M. Metselaar, Marca H. M. Wauben, Otto C. Boerman, Peter L. van Lent, Gert Storm, F. Pastorino, C. Brignole, D. Marimpietri, E. H. Moase, T. M. Allen, M. Ponzoni, K. Romøren, B. J. Thu, Ø Evensen, S. Rossi, S. Ristori, G. Martini, R. M. Schiffelers, G. Molema, T. L. M. ten Hagen, A. P. C. A. Janssen, R. G. Ebben, A. J. Schraa, R. J. Kok, G. Koning, G. Storm, S. I. Simões, C. M. Marques, M. E. Cruz, G. Cevc, M. B. Martins, D. Summers, D. Ruff, R. W. Smalling, D. Cardoza, D. Dottavio, D. Lasic, J. Szebeni, L. Baranyi, S. Savay, J. Milosevits, R. Bunger, P. Laverman, J. M. Metselaar, A. Chanan-Khan, L. Liebes, F. M. Muggia, R. Cohen, Y. Barenholz, C. R. Alving, S. Hoving, A. L. B. Seynhaeve, S. T. van Tiel, A. M. M. Eggermont, K. Tokutomi, Y. Sadzuka, A. Igarashi, H. Konno, and T. Sonobe
- Subjects
Liposome ,Materials science ,Antisense oligodeoxynucleotides ,Albumin ,Cationic polymerization ,Pharmaceutical Science ,Molecular biology ,body regions ,chemistry.chemical_compound ,chemistry ,Covalent bond ,In vivo ,Mole ,Ethylene glycol - Abstract
Targeted Delivery of Antisense Oligodeoxynucleotides In Vivo by Means of Coated Cationic LipoplexesEarlier we reported on the massive uptake of liposomes surface-modified with negatively charged aconitylated albumin (Aco-HSA) by liver endothelial cells (EC) in vivo. In the present work we apply this principle for in vivo delivery of antisense oligodeoxynucleotides (ODN) to these cells by means of coated cationic lipoplexes (CCL) (). CCL were prepared by complexing ODN with the cationic lipid DOTAP and subsequent coating of the complex by neutral lipids including a lipid-anchored poly(ethylene glycol). Aco-HSA was covalently coupled.The Aco-HSA-CCLs were 160 nm in size, contained 1.03 ± 0.35 nmol ODN and 54 ± 18 µg Aco-HSA per µ mol total lipid. The Aco-HSA-CCLs were rapidly eliminated from plasma, 60% of the injected dose being recovered in the liver after 30 m. Within the liver, the EC accounted for two thirds of total liver uptake. Non-targeted CCLs were eliminated very slowly: after 30 m >90% of the pa...
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- 2003
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49. Occluded Superficial Femoral Artery Used for Emergency Reconstruction: A Consecutive Case Series about the 'Proper Conduit Technique'
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Frans L. Moll, Martijn S. Marsman, G. G. Koning, and Abdelkarime Kh. Jahrome
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Male ,medicine.medical_specialty ,medicine.medical_treatment ,Arterial Occlusive Diseases ,Constriction, Pathologic ,Endarterectomy ,Femoral artery ,030204 cardiovascular system & hematology ,Groin ,Revascularization ,Transplantation, Autologous ,03 medical and health sciences ,0302 clinical medicine ,medicine.artery ,Angioplasty ,Humans ,Surgical Wound Infection ,Medicine ,Outpatient clinic ,Vascular Diseases ,030212 general & internal medicine ,Vascular Patency ,Aged ,Retrospective Studies ,Ultrasonography, Doppler, Duplex ,business.industry ,General Medicine ,Middle Aged ,Plastic Surgery Procedures ,Surgery ,Femoral Artery ,Transplantation ,Treatment Outcome ,medicine.anatomical_structure ,Bypass surgery ,Female ,Vascular Grafting ,Radiology ,Cardiology and Cardiovascular Medicine ,business - Abstract
Background Deep wound infections in the groin region can result in an acute or life-threatening condition. Especially, when there is no suitable vein available because of many reasons (e.g., previous bypass surgery, small vessel diameter). Synthetic prosthesis is not always the “first-choice technique” because of contamination or infection. It was ad hoc hypothesized in an acute setting that a segment of an occluded superficial femoral artery (SFA) could be used as a conduit in combination with eversion technique, known from carotid surgery. Methods The clinical experience with the use of an occluded SFA as an autograft for arterial reconstruction is described in this consecutive case series, and the available level of evidence was assessed for each consideration and rationale aspect of this technique. This study was conducted and reported in line with the consensus-based clinical case report guideline (CARE guideline 2016). Data of 5 patients were retrieved from the electronic patient files and were analyzed retrospectively. Patients were all invited for follow up at the outpatient department for physical examination and duplex ultrasound. Literature was searched for this technique by using online library systems (PubMed, Embase, and the Cochrane Library). A medical drawer made a schematic overview of the operation steps of this technique. Results Five patients with a history of vascular disease underwent an open revascularization for which an occluded SFA segment was harvested. An eversion endarterectomy of the selected SFA segment was used as a “proper conduit” to restore the blood flow to the limb. Postoperatively, best medical treatment was (re)started, and no major complications were assessed. Conclusions The “proper conduit technique” of an occluded superficial femoral artery segment seems to be a feasible method for emergency and elective treatment of vascular patients with (potential) groin region difficulties (level of evidence 4).
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- 2017
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50. Emergency autologous vein graft reconstruction after using a vascular closure device
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G. G. Koning, J. Vliet, and Nasir Sayed
- Subjects
Male ,medicine.medical_specialty ,medicine.medical_treatment ,Femoral artery ,Iliac Artery ,Ischemia ,medicine.artery ,Angioplasty ,Medical Illustration ,medicine ,Humans ,Popliteal Artery ,Saphenous Vein ,Vascular closure device ,Vein ,Leg ,medicine.diagnostic_test ,business.industry ,General Medicine ,Critical limb ischemia ,Arteriosclerosis ,Middle Aged ,medicine.disease ,Surgery ,Femoral Artery ,Radiography ,medicine.anatomical_structure ,Acute Disease ,Angiography ,Radiology ,Autologous Vein Graft ,Emergencies ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business - Abstract
An emergency operation for access related acute critical limb ischemia with signs of infection is described. Inguinal femoral reconstruction was performed with a bifurcated graft constructed from the ipsilateral saphenous vein.
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- 2011
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