96 results on '"Pitsis, A A"'
Search Results
2. Totally endoscopic aortic valve replacement with concomitant trans-aortic mitral valve repair for mitral regurgitation
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Antonios Pitsis, Konstantinos Dean Boudoulas, Harisios Boudoulas, and Nikolaos Tsotsolis
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Pulmonary and Respiratory Medicine ,Aortic valve ,Trans-aortic mitral valve repair ,medicine.medical_specialty ,RD1-811 ,medicine.medical_treatment ,Case Report ,Aortic valve replacement ,Anesthesiology ,Minimally invasive cardiac surgery ,medicine ,Humans ,Minimally Invasive Surgical Procedures ,RD78.3-87.3 ,Cardiac Surgical Procedures ,Heart Valve Prosthesis Implantation ,Edge-to-edge repair ,Mitral valve repair ,Mitral regurgitation ,business.industry ,Totally endoscopic aortic valve replacement ,Mitral Valve Insufficiency ,General Medicine ,medicine.disease ,Cardiac surgery ,Surgery ,Treatment Outcome ,medicine.anatomical_structure ,Cardiothoracic surgery ,Aortic Valve ,Totally endoscopic mitral valve repair ,cardiovascular system ,Chordae Tendineae ,Mitral Valve ,Chordae tendineae ,Cardiology and Cardiovascular Medicine ,business - Abstract
Background Minimally invasive aortic valve procedures through a hemi-sternotomy or a right anterior mini-thoracotomy have gained popularity over the last several years. Totally endoscopic aortic valve replacement (TEAVR) is an innovative and a less invasive (incision-wise) surgical aortic valve replacement technique. The operative steps of TEAVR have been reported previously from our group. Mitral regurgitation (MR) frequently accompanies aortic valve disease that at times may also require repair. Totally endoscopic surgery in such cases has not been tested. Presentation of the technique We present a surgical technique for a totally endoscopic approach to aortic valve replacement and concomitant mitral valve repair for primary and secondary MR. An aortotomy incision was used avoiding an atriotomy, which results in an increase in cross-clamp (XC) and cardiopulmonary bypass (CPB) times that could be associated with higher mortality and morbidity. Neochords (artificial chordae tendineae) were used for primary MR and an edge-to-edge approach for secondary MR. Conclusion TEAVR and concomitant mitral valve repair can be performed successfully with reasonable XC and CPB times with excellent short-term results.
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- 2021
3. Mitral commissural prolapse
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Fragiskos I. Parthenakis, Alexandros P. Patrianakos, Eva D Papadimitraki, Antonis A. Pitsis, Angeliki Zacharaki, and Maria E. Marketou
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medicine.medical_specialty ,medicine.medical_treatment ,Echocardiography, Three-Dimensional ,Disease ,030204 cardiovascular system & hematology ,Surgical planning ,03 medical and health sciences ,0302 clinical medicine ,2d echocardiography ,Prolapse ,Humans ,Medicine ,Radiology, Nuclear Medicine and imaging ,030212 general & internal medicine ,Risk factor ,Mitral valve repair ,Mitral regurgitation ,Mitral Valve Prolapse ,business.industry ,Mitral Valve Insufficiency ,Surgical correction ,Commissure ,Surgery ,Cardiology and Cardiovascular Medicine ,business ,Echocardiography, Transesophageal ,Valve disease - Abstract
Mitral commissural prolapse or flail, either isolated or combined with more extensive degenerative valve disease imposes several challenges both on its diagnosis and management whilst being a risk factor for valve reoperation after mitral valve repair. Accurate identification of the prolapsing segment is often not feasible with transthoracic 2D echocardiography, with transesophageal 3D imaging then required for correct diagnosis and surgical planning. Various surgical techniques employed alone or in combination, have yielded good results in the repair of commissural prolapse. Herein, we analyze the specific characteristics of commissural disease focusing our attention on 2D and 3D echocardiographic findings and we briefly comment on techniques employed for surgical correction of the disease.
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- 2021
4. The Use of MitraClip in Secondary Mitral Regurgitation and Heart Failure
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Antonios A. Pitsis, Ajay Vallakati, William T. Abraham, Konstantinos Dean Boudoulas, and David A. Orsinelli
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medicine.medical_specialty ,medicine.medical_treatment ,Volume overload ,Cardiac resynchronization therapy ,030204 cardiovascular system & hematology ,03 medical and health sciences ,0302 clinical medicine ,Mitral valve ,Internal medicine ,Humans ,Medicine ,In patient ,030212 general & internal medicine ,Heart Failure ,Heart Valve Prosthesis Implantation ,Mitral regurgitation ,business.industry ,MitraClip ,Mitral Valve Insufficiency ,Dilated cardiomyopathy ,General Medicine ,medicine.disease ,Treatment Outcome ,medicine.anatomical_structure ,Heart failure ,Quality of Life ,Cardiology ,Mitral Valve ,Cardiology and Cardiovascular Medicine ,business - Abstract
Secondary (also known as functional) mitral regurgitation (MR) has increased substantially over the last several decades due to an increase in the prevalence of dilated cardiomyopathy (ischemic and non-ischemic). Mortality and morbidity in patients with dilated cardiomyopathy is much greater when associated with MR as compared to without MR. MR will result in further left ventricular (LV) volume overload, LV dilation, and pupillary muscle displacement resulting in deterioration of the severity of MR leading to a vicious cycle. Optimization of heart failure medical therapy, and cardiac resynchronization therapy for those that qualify, can improve severity of MR; however, significant MR will persist in certain patients. Transcatheter mitral valve repair to treat significant MR using the MitraClip (Abbott, Menlo Park, California), which grasps and coapts the posterior and anterior mitral valve leaflets, in appropriately selected patients with dilated cardiomyopathy and secondary MR has been shown to improve quality of life and prolong survival.
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- 2020
5. Floppy mitral valve/mitral valve prolapse: A complex entity with multiple genotypes and phenotypes
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Ernest L. Mazzaferri, Antonios A. Pitsis, Filippos Triposkiadis, Richard J. Gumina, Konstantinos Dean Boudoulas, and Harisios Boudoulas
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medicine.medical_specialty ,Heredity ,Population ,Disease ,030204 cardiovascular system & hematology ,Asymptomatic ,Sudden cardiac death ,03 medical and health sciences ,0302 clinical medicine ,Risk Factors ,Internal medicine ,Prevalence ,medicine ,Humans ,Mitral valve prolapse ,Genetic Predisposition to Disease ,030212 general & internal medicine ,education ,education.field_of_study ,Mitral regurgitation ,Mitral Valve Prolapse ,business.industry ,medicine.disease ,Pedigree ,Phenotype ,Infective endocarditis ,Heart failure ,Disease Progression ,Cardiology ,Mitral Valve ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business - Abstract
Floppy mitral valve/mitral valve prolapse (FMV/MVP) is a common valvular abnormality affecting 2% to 3% of the general population. It occurs in a heterogeneous group of patients with varying and age dependent expressions. FMV/MVP can be familial or sporadic, isolated (called non-syndromic) or as a part of a well-defined syndrome of heritable connective tissue disorders or other diseases. A wide range of phenotypic expression exists ranging from asymptomatic to non-specific symptoms related to neuroendocrine or autonomic nervous system functional abnormalities, varying degrees of mitral regurgitation that may require interventional therapy, heart failure, infective endocarditis, cardiac arrhythmias and/or sudden cardiac death. FMV/MVP is predominantly considered a heritable disorder with clinical manifestations not present at birth, but appearing later in life. Though a variant gene may initiate the development of FMV/MVP, precise phenotypic expression may be related to multiple other molecular, genetic and epigenetic factors that modify the final expression of the disease. A better understanding of these mechanisms will help to better define the natural history of the disease, inhibit disease progression and even prevent the phenotypic expression of FMV/MVP.
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- 2020
6. Preoperative determination of artificial chordae tendineae length by transoesophageal echocardiography in totally endoscopic mitral valve repair
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Nikolaos Tsotsolis, Antonios A. Pitsis, Efstratios K. Theofilogiannakos, Konstantinos Dean Boudoulas, and Harisios Boudoulas
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Male ,Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,medicine.medical_treatment ,Preoperative care ,Mitral valve ,medicine ,Humans ,Mitral valve prolapse ,Cardiac Surgical Procedures ,Papillary muscle ,Surgical repair ,Mitral valve repair ,Mitral regurgitation ,business.industry ,Mitral Valve Insufficiency ,Middle Aged ,medicine.disease ,Surgery ,medicine.anatomical_structure ,Chordae Tendineae ,Mitral Valve ,Female ,Chordae tendineae ,Cardiology and Cardiovascular Medicine ,business ,Echocardiography, Transesophageal - Abstract
OBJECTIVES Artificial chordae tendineae are widely used for surgical repair in patients with mitral regurgitation due to floppy mitral valve/mitral valve prolapse. Expanded polytetrafluoroethylene has been used to construct these artificial chordae; however, the determination of the optimal length of the chordae prior to surgery has been an issue. For this reason, such a method was developed and the results of its use are presented. METHODS Forty-seven consecutive patients with significant mitral regurgitation due to floppy mitral valve/mitral valve prolapse who underwent totally endoscopic mitral valve surgery were studied. The chordae length was predetermined using transoesophageal echocardiography. The length between the top of the fibrous body of the papillary muscle and the coaptation line of the 2 leaflets of the mitral valve was measured and used to define the length of the chordae to be used for repair. Then under stereoscopic vision, a total endoscopic mitral valve repair was performed. RESULTS The predicted mean length of chordal loops was 19.76 ± 0.71 mm (median 20, range 16–28) and the actual mean length of chordal loops used was 19.68 ± 0.74 mm (median 20, range 16–26) demonstrating an excellent correlation between the two (r = 0.959). The mean number of chordae loops used per patient was 5.12 ± 0.62 (median 4, range 2–12). All patients at the time of discharge had no or trivial mitral regurgitation on transoesophageal echocardiography. CONCLUSIONS The chordae length used for mitral valve repair can be determined prior to surgery using transoesophageal echocardiography with a high degree of accuracy. Further, total endoscopic repair in this group of patients provides excellent results. For these reasons, it is expected that this method will replace most traditional approaches to cardiac surgeries in the years to come.
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- 2020
7. Epidemiology and Management of Chronic Thromboembolic Pulmonary Hypertension in Greece. Real-World Data from the Hellenic Pulmonary Hypertension Registry (HOPE)
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Eftychia Demerouti, Panagiotis Karyofyllis, Vassilios Voudris, Maria Boutsikou, George Anastasiadis, Anastasia Anthi, Alexandra Arvanitaki, George Athanassopoulos, Aikaterini Avgeropoulou, Styliani Brili, Christos Feloukidis, Frantzeska Frantzeskaki, George Karatasakis, Haralambos Karvounis, Dimitrios Konstantonis, Ioanna Mitrouska, Sophia Mouratoglou, Katerina K. Naka, Stylianos E. Orfanos, Evangelia Panagiotidou, Georgia Pitsiou, Antonios Pitsis, Vagia Stamatopoulou, Ioannis Stanopoulos, Adina Thomaidis, Iraklis Tsangaris, Dimitrios Tsiapras, George Giannakoulas, Athanassios Manginas, and on behalf of the Hellenic Society for the Study of Pulmonary Hypertension (HSSPH)
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medicine.medical_specialty ,medicine.medical_treatment ,Population ,pulmonary endarterectomy ,Cardiac index ,registry ,Riociguat ,Article ,chronic thromboembolic pulmonary hypertension ,Angioplasty ,Internal medicine ,pulmonary hypertension ,medicine ,education ,education.field_of_study ,business.industry ,General Medicine ,medicine.disease ,Brain natriuretic peptide ,Pulmonary hypertension ,Pulmonary embolism ,medicine.anatomical_structure ,Cardiology ,Vascular resistance ,Medicine ,business ,balloon pulmonary angioplasty ,medicine.drug - Abstract
Chronic Thromboembolic Pulmonary Hypertension (CTEPH) is a rare disease with poor prognosis if left untreated, characterized by pulmonary vascular bed obstruction due to unresolving thromboembolic material. The Hellenic pulmonary hypertension registry (HOPE) was launched in Greece in early 2015 and enrolls patients from all pulmonary hypertension subgroups in Greece. In total, 98 patients with CTEPH were enrolled from January 2015 until November 2019. Of these patients, 55.1% represented incident population, 50% were classified in the World Health Organization functional class II and 49% had a history of acute pulmonary embolism. The median values of pulmonary vascular resistance (PVR) and cardiac index were 7.4 (4.8) WU and 2.4 (1.0) L/min/m2, respectively, the mean diffusing capacity for carbon monoxide was 74.8 ± 20.6%, the median 6-minute walk distance was 347 (220) meters and the median value of N Terminal-pro brain natriuretic peptide was 506.0 (1450.0) pg/mL. In total, 60.2% of the patients were under pulmonary arterial hypertension-targeted therapy at the time of enrolment, specifically, riociguat was received by 35.7% of the patients and combination therapy was the preferred strategy for 16% of the patients. In total, 74 patients were evaluated for pulmonary endarterectomy (PEA), 34 (45.9%) were assessed as operable but only 23 of those (31.1%) finally underwent PEA. The remaining 40 patients were ineligible for PEA according to the operability assessment and 13 (17.6%) of them underwent balloon pulmonary angioplasty. The age of the non-operable patients was significantly higher than the operable patients (p <, 0.001), while there was no significant difference with regard to the history of coagulopathies between the operable and non-operable patients (p = 0.33).
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- 2021
8. Totally endoscopic aortic valve replacement with stented biological and mechanical aortic prostheses
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Konstantinos Dean Boudoulas, Antonis A. Pitsis, Nikolaos Tsotsolis, Harisios Boudoulas, and Nikolaos Nikoloudakis
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medicine.medical_specialty ,Aortic valve replacement ,business.industry ,Medicine ,Cardiology and Cardiovascular Medicine ,business ,medicine.disease ,Surgery - Abstract
Background Endoscopic mitral valve surgery has become the gold standard of care in many expert centres around the globe. The aortic valve has not met the same popularity mainly due to the very confined space in the aortic root, and to the close proximity with the sternum which restricts the movement of the endoscopic instruments. When endoscopic aortic valve replacement is practiced in expert centres, is usually performed with the use of sutureless bioprostheses. We hereby present our experience of totally endoscopic aortic valve replacement (TEAVR) with conventional mechanical and biological prostheses. Methods Since January 2019, fifty-two consecutive patients with significant aortic stenosis and/or aortic regurgitation, who were operated with TEAVR with conventional prostheses were studied. 7,69% of the cases were REDOs. The prostheses used were either stented bovine pericardial in 84,6% of the patients and bileaflet mechanical in 15,4%. The operations were performed through a 3 to 4 cm working incision in the 3rd intercostal space (ICS) right parasternally (where an extra small soft tissue protector was deployed), a 10 mm port for the 3D, 30°, endoscope, and a 5 mm port for the left atrial vent. On full cardiopulmonary bypass, the heart was arrested with cardioplegia which was administered either in the aortic root or directly in the coronary ostia. A transverse aortotomy was performed 3 cm above the right coronary ostium. The native valve (tricuspid or bicuspid) was excised, the annulus was sized and the prostheses were inserted using twelve to fifteen annular sutures who were secured using an automated suture-fastening device. In order to facilitate exposure in the aortic root, a metal self-expandable net was used. Results The average age of the patients treated was 68,3 years (range 36–81, median 72). The mean EuroSCORE2 was 3,22 (0,9–12,01, SEM:0,71). The mean size of the prostheses inserted was 23,72 mm (21–27, median 23) and the mean postoperative peak gradient was 12,15 (5–19, SEM: 1,00). Mean cross clamp and CPB times were 75,38 min (SEM:5,87) and 116,30 (SEM:8,63). There was no case of paravalvular leak or pacemaker insertion. There was no mortality in this cohort of patients. There was one case of cerebrovascular accident. Conclusions TEAVR can be performed safely with conventional aortic prostheses. There are several advantages of the technique over the other aortic valve replacing approaches. Over the other surgical techniques has the advantage of not fracturing the sternum or spreading or dislodging the ribs and increased patient satisfaction. Over the TAVI has the advantages of fully removing the diseased native valve, securing the prosthesis at the exact annular level without any paravalvular leaks or need for pacemaker insertion and the ability of using mechanical prostheses. The main disadvantages of the technique are the relatively prolonged cross clamp and CPB times and the steep learning curve. TEAVR Funding Acknowledgement Type of funding source: None
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- 2020
9. Rheumatic Fever Licks at the Joints, but Bites at the Heart
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Konstantinos Dean Boudoulas, Antonios A. Pitsis, and Harisios Boudoulas
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medicine.medical_specialty ,business.industry ,MEDLINE ,Rheumatic Heart Disease ,medicine.disease ,Dermatology ,United States ,Medicine ,Rheumatic fever ,Humans ,Pharmacology (medical) ,Genetic Predisposition to Disease ,Rheumatic Fever ,Cardiology and Cardiovascular Medicine ,business - Published
- 2020
10. Operative steps of totally endoscopic aortic valve replacement
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Antonios A. Pitsis, Harisios Boudoulas, and Konstantinos Dean Boudoulas
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Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,medicine.diagnostic_test ,business.industry ,medicine.disease ,Surgery ,Endoscopy ,Aortic valve replacement ,Cardiac Surgery procedures ,medicine ,Minimally invasive cardiac surgery ,Cardiology and Cardiovascular Medicine ,business - Published
- 2020
11. Hospitalisations for heart failure predict mortality in pulmonary hypertension related to congenital heart disease
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Alexandra Frogoudaki, Christos Ntellos, Konstantinos Vasiliadis, Despoina Ntiloudi, Haralambos Karvounis, Athanasios Manginas, Costas Tsioufis, Styliani Brili, Aphrodite Tzifa, Antonios A. Pitsis, John A. Goudevenos, Sotiria C. Apostolopoulou, Spyridon Rammos, George Giannakoulas, and Marios Kolios
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Adult ,Heart Defects, Congenital ,Male ,medicine.medical_specialty ,Heart disease ,Hypertension, Pulmonary ,Population ,030204 cardiovascular system & hematology ,Risk Assessment ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,Humans ,Medicine ,Endocarditis ,Registries ,030212 general & internal medicine ,Mortality ,education ,Stroke ,Heart Failure ,education.field_of_study ,Greece ,business.industry ,Proportional hazards model ,Arrhythmias, Cardiac ,Cardiovascular Agents ,Middle Aged ,Prognosis ,medicine.disease ,Pulmonary hypertension ,Hospitalization ,Heart failure ,Cohort ,Female ,Cardiology and Cardiovascular Medicine ,business ,Follow-Up Studies - Abstract
ObjectiveDespite the progress in the management of patients with adult congenital heart disease (ACHD), a significant proportion of patients still develop pulmonary hypertension (PH). We aimed to highlight the rate of the complications in PH-ACHD and the predicting factors of cumulative mortality risk in this population.MethodsData were obtained from the cohort of the national registry of ACHD in Greece from February 2012 until January 2018.ResultsOverall, 65 patients receiving PH-specific therapy were included (mean age 46.1±14.4 years, 64.6% females). Heavily symptomatic (New York Heart Association (NYHA) class III/IV) were 53.8% of patients. The majority received monotherapy, while combination therapy was administered in 41.5% of patients. Cardiac arrhythmia was reported in 30.8%, endocarditis in 1.5%, stroke in 4.6%, pulmonary arterial thrombosis in 6.2%, haemoptysis in 3.1% and hospitalisation due to heart failure (HF) in 23.1%. Over a median follow-up of 3 years (range 1–6), 12 (18.5%) patients died. On univariate Cox regression analysis history of HF hospitalisation emerged as a strong predictor of mortality (HR 8.91, 95% CI 2.64 to 30.02, pConclusionsLong-term complications are common among patients with PH-ACHD. Hospitalisations for HF predict mortality and should be considered in the risk stratification of this population.
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- 2018
12. Floppy Mitral Valve/Mitral Valve Prolapse (FMV/MVP): An unrevealed genotype - Phenotype relationship
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Ernest L. Mazzaferri, Harisios Boudoulas, Efstratios K. Theofilogiannakos, Peter J. Mohler, Konstantinos Dean Boudoulas, Antonios A. Pitsis, Francesca Madiai, Sara N. Koenig, and Timotheos G. Kelpis
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lcsh:Diseases of the circulatory (Cardiovascular) system ,medicine.medical_specialty ,DCHS1 ,Mitral Valve Prolapse ,business.industry ,Floppy Mitral Valve ,Mitral Valve Insufficiency ,medicine.disease ,Genotype phenotype ,Phenotype ,lcsh:RC666-701 ,Internal medicine ,medicine ,Cardiology ,Mitral valve prolapse ,Humans ,genetics ,Genetic Predisposition to Disease ,floppy mitral valve ,Cardiology and Cardiovascular Medicine ,business - Published
- 2019
13. Hybrid Coronary Revascularization and the Hybrid Cardiovascular Operating Room
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Konstantinos Dean Boudoulas, Antonios A. Pitsis, Konstantinos Marmagkiolis, and Harisios Boudoulas
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Operating Rooms ,medicine.medical_specialty ,Hybrid coronary revascularization ,business.industry ,medicine.medical_treatment ,MEDLINE ,030204 cardiovascular system & hematology ,Balloon ,03 medical and health sciences ,0302 clinical medicine ,Text mining ,Internal medicine ,Angioplasty ,medicine ,Cardiology ,Pharmacology (medical) ,030212 general & internal medicine ,Angioplasty, Balloon, Coronary ,Coronary Artery Bypass ,Cardiology and Cardiovascular Medicine ,business - Published
- 2018
14. IS THE SWAN-GANZ CATHETER EXCLUSIVELY A TOOL FOR PRESSURE MEASUREMENTS INSIDE THE PULMONARY CIRCULATION? THE MECHANICAL CONTRIBUTION OF THE PULMONARY ARTERY CATHETER TO A CRITICAL DECISION MAKING INTRAOPERATIVELY
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Konstantinos Lolakos, Anda-Cristina Butnar, Nikolaos Tsotsolis, Isaak Keremidis, Nikolaos Nikoloudakis, Antonios Pitsis, and Timotheos Kelpis
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medicine.medical_specialty ,business.industry ,medicine.medical_treatment ,Central venous pressure ,Pulmonary artery catheter ,Inferior vena cava ,Swan Ganz Catheter ,Pulmonary vein ,Anesthesiology and Pain Medicine ,medicine.vein ,Superior vena cava ,Internal medicine ,medicine.artery ,Pulmonary artery ,medicine ,Cardiology ,Arterial line ,Cardiology and Cardiovascular Medicine ,business - Abstract
Introduction The Pulmonary Artery Catheter (PAC) Swan-Ganz, despite the widespread rumours regarding the possible complications that correlate with its insertion, such as the pulmonary artery rupture, is still - in the experienced hands - an essential tool of hemodynamic monitoring in cardiac surgery. In combination with Transoesophageal Echocardiography (TOE) though, they offer to the Anaesthesiologist an integrated profile of pressure, volume, flow velocity and anatomical information. However, there can still be occasions where the above mentioned hemodynamic and non-hemodynamic data are not enough to guide the surgical decision-making process intraoperatively. In this case report, we present the contribution of the difficulty in advancing the PAC into the Right Atrium (RA), as an indication of Superior Vena Cava (SVC) stenosis, and the need to return to CardioPulmonary Bypass (CPB) to repair it, during a surgery of totally endoscopic Atrial Septal Defect (ASD) closure. Methods A 40yr old female patient is undergoing totally endoscopic cardiac surgery with CPB for the closure of a Superior Sinus Venosus ASD with simultaneous anomalous drainage of the Right Upper Pulmonary Vein (RUPV) into the SVC. The anaesthetic monitoring includes arterial line, PAC and TOE, which confirms the preoperative findings (Figure 1,2,3), while for the needs of the operation the Anaesthesiologist inserts also a CPB cannula in the Right Internal Jugular Vein. Later on, during the phase that the surgeon is advancing the second venous CPB cannula through the femoral vein and the Inferior Vena Cava (IVC) into the RA, the PAC is being withdrawn from its wedge position and is left high inside the SVC, showing the Central Venous Pressure (CVP). Results After the closure of the ASD and the flow diversion of the RUPV into the Left Atrium with a bovine pericardial patch, deairing is taking place, the restoration of the ASD is being confirmed with the TOE and successful CPB weaning occurs. A subsequent TOE scan shows turbulence inside the SVC with the colour Doppler (Figure 4), indicative of stenosis, while the CVP is 15mmHg, and the dilemma that is coming up is if the stenosis is clinically significant or not. However, at the same time it is impossible to readvance the PAC into the RA, an indication of severe SVC stenosis, and the team decides to return to CPB to repair it. After the placement of a second pericardial patch that widens the RA-SVC junction on a beating heart, laminar flow is being depicted inside the SVC (Figure 5), the PAC is being seamlessly floated into the RA (Figure 6) until its wedge position, and the CVP is 8mmHg. The short and the long-term postoperative periods were uncomplicated. Discussion The intraoperative use of the PAC in the current case report, and the difficulty in readvancing it more specifically, proved to be crucial in making an undoubtedly critical decision towards repairing a stenosis that could have been overlooked, if we had simply relied on the CVP, and become even fatal in case of delayed diagnosis. The mechanical contribution of the PAC has been underlined.
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- 2021
15. P6489Preoperative determination of artificial chordae length by transesophageal echocardiography
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Harisios Boudoulas, N Tsotsolis, Konstantinos Dean Boudoulas, E Theofilogiannakos, and A Pitsis
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medicine.medical_specialty ,business.industry ,medicine ,Radiology ,Cardiology and Cardiovascular Medicine ,business - Abstract
The use of artificial chordae is one of the main techniques used in mitral valve repair to treat prolapsing leaflets, especially in anterior and bileaflet prolapse. With the use of PTFE sutures to replace elongated or ruptured chords mitral valve repair rates have significantly improved. The main difficulty with this technique is to determine the optimal length of the artificial chordae. Intraoperative transoesophageal echocardiography (TOE) is mandatory in mitral valve repair in order to determine the type of lesion of the mitral valve but also to evaluate the quality of the repair. We examined the accuracy of preoperative prediction of artificial chordae length by the preoperativeTOE. Patients and methods Twenty-one consecutive patients (7 females) underwent mitral valve repair with artificial chordae for significant mitral valve prolapse in our department during the last year. The median age of the patients was 62 y. (range 25 - 87) and the mean EuroSCORE II 3,36% (SD 4,61%). During the prep TOE we determined the predicted length of the required replacement chordae for the repair using mainly the 4 chamber view to calculate the distance between the tip of the papillary muscle and the coaptation point of the two leaflets and we subtracted 5mm which is the minimum of the desired coaptation length (top right part of the Figure). All the patients underwent totally endoscopic mitral repair through a 3 cm right periareolar incision. 14,3% of the patients had anterior leaflet (AML) prolapse, 23,8% bileaflet and 61,9% posterior (PML). The appropriate length of the required chordae was measured intraoperatively. Results We used on average 3 loops of artificial chordae size 23,3 mm (SD 1,15mm) to treat the AML prolapse, 5 loops size 23,2 mm (SD 2,28mm) to treat the bileaflet prolapse and 2,23 loops size 18mm (SD 2mm) to treat the PML prolapse (bottom part of the figure). The predicted size of the artificial chordae had a positive correlation to the length used (Pearson correlation, p Chordae length predicted by echo Conclusion The length of artificial chordae can be predetermined with great accuracy with the use of TOE, making TOE an important tool not only for the determination of the mitral lesion and quality of the repair but also for the planning of the operation.
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- 2019
16. Mitral valve repair: moving towards a personalized ring
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Antonios A. Pitsis, Efstratios K. Theofilogiannakos, Konstantinos Dean Boudoulas, Nikolaos Tsotsolis, Timotheos G. Kelpis, and Harisios Boudoulas
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Male ,medicine.medical_treatment ,Blood Loss, Surgical ,030204 cardiovascular system & hematology ,0302 clinical medicine ,Mitral valve ,Mitral valve prolapse ,Heart Valve Prosthesis Implantation ,Mitral Valve Insufficiency ,General Medicine ,Middle Aged ,Cardiac surgery ,medicine.anatomical_structure ,Personalized ring ,Cardiothoracic surgery ,Heart Valve Prosthesis ,cardiovascular system ,Cardiology ,Female ,Cardiology and Cardiovascular Medicine ,Research Article ,Adult ,Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,Systole ,Floppy mitral valve ,lcsh:Surgery ,Diastole ,Prosthesis Design ,lcsh:RD78.3-87.3 ,03 medical and health sciences ,Internal medicine ,medicine ,Humans ,Blood Transfusion ,cardiovascular diseases ,Aged ,Retrospective Studies ,Mitral regurgitation ,Mitral valve repair ,business.industry ,lcsh:RD1-811 ,Length of Stay ,medicine.disease ,030228 respiratory system ,lcsh:Anesthesiology ,Surgery ,business ,Repair - Abstract
Background Mitral valve repair with the use of an annuloplasty ring is the procedure of choice in patients with significant mitral regurgitation (MR) due to floppy mitral valve (FMV)/mitral valve prolapse (MVP). The mitral annular size, shape and motion may vary substantially among patients and thus, commercially available rings may not be suitable for each individual patient. Methods A “personalized ring” (PR) was easily constructed in the operating room using a Dacron sheet and titanium ligating clips to custom fit to each individual mitral annulus shape and size. There were 127 patients with severe MR due to FMV/MVP that underwent mitral valve repair surgery; 58 patients received a PR and 69 patients received a commercial Carpentier-Edwards Physio II ring. The patient records were retrospectively analysed. Results There were no surgical deaths. In-hospital length-of-stay and blood transfusions were not statistically different between the two groups. Mitral valve area was greater (p
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- 2019
17. Tricuspid Valve Disease: The 'Forgotten Valve'
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Konstantinos Dean Boudoulas, Antonios A. Pitsis, John Barbetseas, and Harisios Boudoulas
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medicine.medical_specialty ,Tricuspid valve ,business.industry ,valvular heart disease ,Heart Valve Diseases ,medicine.disease ,Tricuspid valve disease ,medicine.anatomical_structure ,Internal medicine ,medicine ,Cardiology ,Humans ,Pharmacology (medical) ,Tricuspid Valve ,Cardiology and Cardiovascular Medicine ,business - Published
- 2019
18. Left Ventricular Cardiac Hemangioma
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Nikolaos Nikoloudakis, Maria Thoma, Alexandros Kallifatidis, Anthoula Asimaki, Vlasis Ninios, Antonios A. Pitsis, Timotheos G. Kelpis, Efstratios K. Theofilogiannakos, Christos Tourmousoglou, Elias Ninios, and Nikolaos Tsotsolis
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Male ,medicine.medical_specialty ,business.industry ,Heart Ventricles ,Cardiac hemangioma ,MEDLINE ,General Medicine ,Heart Neoplasms ,Text mining ,Internal medicine ,Cardiology ,Humans ,Medicine ,Hemangioma ,business ,Aged - Published
- 2017
19. Malignant interventricular liposarcoma
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Nikolaos Nikoloudakis, Anthoula Asimaki, Theodoros D. Karamitsos, Antonios A. Pitsis, Christos Tourmousoglou, and Alexandros Kallifatidis
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Interventricular liposarcoma ,lcsh:Diseases of the circulatory (Cardiovascular) system ,Pathology ,medicine.medical_specialty ,lcsh:RC666-701 ,business.industry ,medicine ,Liposarcoma ,Cardiology and Cardiovascular Medicine ,medicine.disease ,business - Published
- 2019
20. Simultaneous implantation of MitraClip devices in a patient with severe mitral and tricuspid valve regurgitation
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Vlasis Ninios, Dimitrios Tsikaderis, Petros S. Dardas, Christos Tourmousoglou, Antonios A. Pitsis, Ilias Ninios, Stratos Theophylogiannakos, and Nikolaos E. Mezilis
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lcsh:Diseases of the circulatory (Cardiovascular) system ,congenital, hereditary, and neonatal diseases and abnormalities ,Mitral regurgitation ,medicine.medical_specialty ,business.industry ,MitraClip ,Regurgitation (circulation) ,030204 cardiovascular system & hematology ,03 medical and health sciences ,0302 clinical medicine ,lcsh:RC666-701 ,Internal medicine ,cardiovascular system ,Cardiology ,Medicine ,cardiovascular diseases ,030212 general & internal medicine ,Tricuspid Valve Regurgitation ,TRICUSPID VALVE REPAIR ,Cardiology and Cardiovascular Medicine ,business - Abstract
We present a case of an 84-year old patient with severe mitral and tricuspid regurgitation with a lot of cormobidities who underwent a simultaneous transfemoral (one approach) mitral and tricuspid valve repair using the MitraClip system. Keywords: MitraClip devices, Mitral regurgitation, Tricuspid regurgitation, Simultaneous
- Published
- 2019
21. Caught in the Act: Massive Pulmonary Thrombus Crossing a Patent Foramen Ovale
- Author
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Antonis A. Pitsis, Christos Tourmousoglou, Alexandros Kallifatidis, Gerasimos Gogas, and Nikolaos Nikoloudakis
- Subjects
Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,business.industry ,Computed Tomography Angiography ,Foramen Ovale, Patent ,Middle Aged ,medicine.disease ,Echocardiography ,Internal medicine ,Patent foramen ovale ,Cardiology ,Medicine ,Humans ,Surgery ,Female ,Thrombus ,Cardiology and Cardiovascular Medicine ,business ,Pulmonary Embolism - Published
- 2017
22. P744Risk stratification in pulmonary arterial hypertension associated with congenital heart disease. Results from CHALLENGE registry
- Author
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S. Rammos, T. Mousiama, C. Ntellos, Konstantinos Tsioufis, Haralampos Karvounis, Despoina Ntiloudi, Athanassios Manginas, Aphrodite Tzifa, Georgios Giannakoulas, G. Giamouzis, Antonis A. Pitsis, Marios Kolios, Stella Brili, Konstantinos Vasiliadis, and Alexandra Frogoudaki
- Subjects
medicine.medical_specialty ,Heart disease ,business.industry ,Internal medicine ,medicine ,Cardiology ,Cardiology and Cardiovascular Medicine ,medicine.disease ,business ,Stratification (mathematics) - Published
- 2017
23. Acute heart failure: heart failure surgery and transplantation
- Author
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Antonis A. Pitsis and Aikaterini N. Visouli
- Subjects
Transplantation ,medicine.medical_specialty ,business.industry ,Heart failure ,Medicine ,business ,medicine.disease ,Surgery - Abstract
Cardiac surgery should be considered in all cases of acute heart failure that is attributed to surgically correctable causes. Surgical revascularization, repair of mechanical complications of myocardial infarction, valve repair or replacement, mechanical circulatory support, and heart transplantation represent the main surgical interventions that may be offered in the setting of acute (de novo or decompensated chronic) heart failure. Percutaneous aortic valve replacement should also be considered for patients who are deemed inoperable.
- Published
- 2017
24. Elevated plasma levels of miR-29a are associated with hemolysis in patients with hypertrophic cardiomyopathy
- Author
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Eleni Nikolakaki, Georgios K. Efthimiadis, Antonios A. Pitsis, Soultana Meditskou, Despoina Parcharidou, Georgios Tzimagiorgis, Haralampos Karvounis, Thomas Zegkos, Dimitrios Ntelios, Sofia Kouidou, and Fotios Girtovitis
- Subjects
0301 basic medicine ,Adult ,medicine.medical_specialty ,Clinical Biochemistry ,030204 cardiovascular system & hematology ,Biology ,Real-Time Polymerase Chain Reaction ,Biochemistry ,Exosome ,Hemolysis ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,Troponin I ,medicine ,Humans ,Secretion ,Biochemistry (medical) ,Hypertrophic cardiomyopathy ,General Medicine ,Blood flow ,Cardiomyopathy, Hypertrophic ,medicine.disease ,MicroRNAs ,030104 developmental biology ,Endocrinology ,Biomarker (medicine) ,Myocardial fibrosis ,Biomarkers - Abstract
Background miR-29a is a small non-coding RNA that is known to repress collagen synthesis. Interestingly, elevated plasma miR-29a was reported to correlate with pronounced myocardial fibrosis in patients with hypertrophic cardiomyopathy. The objective of this study was to elucidate the origin of plasma miR-29a, and evaluate its significance as a biomarker. Methods miR-29a expression was evaluated in plasma ( n = 50) and myocardial samples ( n = 4) from patients with hypertrophic cardiomyopathy using RT-qPCR. Results Although miR-29a was highly expressed in the myocardium, miR-29a plasma levels did not show any correlation with serum troponin I levels (r s = − 0.12, p = 0.43), and the heart does not release significant amounts of miR-29a into the circulation via exosome secretion. Conversely, miR-29a was present in red blood cells, and plasma levels correlated significantly with markers of hemolysis: lactic dehydrogenase (r s = 0.36, p = 0.01) and the absorbance of oxyhemoglobin at 414 nm (r s = 0.39, p = 0.006). Furthermore, the association between serum haptoglobin and the maximal blood flow velocity in the left ventricle outflow tract (r s = − 0.42, p = 0.008) indicated that intravascular hemolysis is a manifestation of the disease. Conclusions miR-29a is highly expressed in myocardial tissue from patients with hypertrophic cardiomyopathy. In contrast, plasma miR-29a is primarily of nonmyocardial origin and is correlated significantly with the extent of hemolysis observed in these patients.
- Published
- 2017
25. Epidemiology and management of chronic thromboembolic pulmonary hypertension: experience from two expert centers
- Author
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Stavros Hadjimiltiades, Haralambos Karvounis, Georgia Pitsiou, Alexandra Arvanitaki, Sophia-Anastasia Mouratoglou, Eckhard Mayer, Antonios A. Pitsis, George Giannakoulas, Maria Anna Bazmpani, Ioannis Stanopoulos, Georgios Sianos, Evangelia Panagiotidou, and Maria Toumpourleka
- Subjects
Male ,lcsh:Diseases of the circulatory (Cardiovascular) system ,medicine.medical_specialty ,Hypertension, Pulmonary ,medicine.medical_treatment ,Endarterectomy ,030204 cardiovascular system & hematology ,Riociguat ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,Epidemiology ,medicine ,Humans ,Registries ,ddc:610 ,Intensive care medicine ,Survival rate ,Antihypertensive Agents ,Aged ,Retrospective Studies ,Greece ,business.industry ,Incidence ,Retrospective cohort study ,Middle Aged ,medicine.disease ,Pulmonary hypertension ,Pulmonary embolism ,Survival Rate ,030228 respiratory system ,lcsh:RC666-701 ,Chronic Disease ,Female ,Observational study ,Pulmonary Embolism ,Cardiology and Cardiovascular Medicine ,business ,medicine.drug - Abstract
Objectives: Chronic thromboembolic pulmonary hypertension (CTEPH) is a rare, distinct pulmonary vascular disease, and therefore, there is a lack of data regarding its clinical presentation, diagnosis, and management at a national basis. We aimed to describe the demographics and management of patients with CTEPH in Northern Greece. Methods: We conducted a retrospective, observational study by a joint collaboration between two pulmonary hypertension expert centers in Greece, and the study included patients diagnosed with CTEPH. The patient population was divided into two groups depending on their operability. Results: Overall, 27 consecutive patients were included (59% female, mean age 59.3±15.1 years). Dyspnea and fatigue were the most common presenting symptoms. History of pulmonary embolism was present in 82%. Of patients, 18 (67%) were assessed as operable, of whom 10 (55%) finally underwent pulmonary endarterectomy (PEA). There were no differences in symptoms, WHO functional class, 6-min walking test distance, and hemodynamics between the operable and nonoperable groups. At the end of follow-up, all non-operable and operable patients who did not receive surgical treatment were treated with at least one pulmonary hypertension-specific drug. Conclusion: This is the first report that presents data of patients diagnosed with CTEPH in Greece. The percentage of patients who underwent surgical treatment is lower but approaches the reported rates in large registries. Considering that PEA is a relatively safe and potentially curative surgical procedure, we emphasize the need for establishing a designated PEA center in Greece. Keywords: Chronic thromboembolic pulmonary hypertension, pulmonary endarterectomy, registry, riociguat.
- Published
- 2017
26. Adult congenital heart disease in Greece: Preliminary data from the CHALLENGE registry
- Author
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Marios Kolios, S. Rammos, Georgios Giannakoulas, Stella Brili, C. Ntellos, Aphrodite Tzifa, George Papadopoulos, Haralambos Karvounis, N. Kampouridis, Maria Papaphylactou, Despina G. Parcharidou, A. Kalangos, Constantinos Tsioufis, Despoina Ntiloudi, A. Chamaidi, A. Douras, A. Manginas, Periklis Davlouros, Konstantinos Vasiliadis, Alexandra Frogoudaki, and Antonis A. Pitsis
- Subjects
Adult ,Heart Defects, Congenital ,Male ,Pediatrics ,medicine.medical_specialty ,Heart disease ,medicine.medical_treatment ,Population ,Statistics as Topic ,MEDLINE ,030204 cardiovascular system & hematology ,Asymptomatic ,Targeted therapy ,Cohort Studies ,03 medical and health sciences ,0302 clinical medicine ,Epidemiology ,medicine ,Humans ,030212 general & internal medicine ,Registries ,education ,education.field_of_study ,Greece ,business.industry ,Middle Aged ,medicine.disease ,Heart failure ,Female ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business ,Cohort study - Abstract
Background The majority of patients with congenital heart disease (CHD), nowadays, survives into adulthood and is faced with long-term complications. We aimed to study the basic demographic and clinical characteristics of adult patients with congenital heart disease (ACHD) in Greece. Methods A registry named CHALLENGE (Adult Congenital Heart Disease Registry. A registry from Hellenic Cardiology Society) was initiated in January 2012. Patients with structural CHD older than 16years old were enrolled by 16 specialized centers nationwide. Results Out of a population of 2115 patients with ACHD, who have been registered, (mean age 38years (SD 16), 52% women), 47% were classified as suffering from mild, 37% from moderate and 15% from severe ACHD. Atrial septal defect (ASD) was the most prevalent diagnosis (33%). The vast majority of ACHD patients (92%) was asymptomatic or mildly symptomatic (NYHA class I/II). The most symptomatic patients were suffering from an ASD, most often the elderly or those under targeted therapy for pulmonary arterial hypertension. Elderly patients (>60years old) accounted for 12% of the ACHD population. Half of patients had undergone at least one open-heart surgery, while 39% were under cardiac medications (15% under antiarrhythmic drugs, 16% under anticoagulants, 16% under medications for heart failure and 4% under targeted therapy for pulmonary arterial hypertension). Conclusions ACHD patients are an emerging patient population and national prospective registries such as CHALLENGE are of unique importance in order to identify the ongoing needs of these patients and match them with the appropriate resource allocation.
- Published
- 2017
27. eComment: 'Repair of an acute type A aortic dissection: how to deal with a residual dissected branchiocephalic artery aneurysm '
- Author
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Christos Tourmousoglou, Antonis A. Pitsis, and Nikolaos Nikoloudakis
- Subjects
Pulmonary and Respiratory Medicine ,Aortic dissection ,medicine.medical_specialty ,Text mining ,Artery aneurysm ,Acute type ,business.industry ,medicine ,Surgery ,Radiology ,Cardiology and Cardiovascular Medicine ,medicine.disease ,business - Published
- 2017
28. eComment: Expanding aortic arch pseudoaneurysm in a high-risk patient with previous coronary surgery: a treatment strategy
- Author
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Nikolaos Nikoloudakis, Antonis A. Pitsis, and Christos Tourmousoglou
- Subjects
Pulmonary and Respiratory Medicine ,Aortic arch ,medicine.medical_specialty ,business.industry ,Coronary surgery ,030204 cardiovascular system & hematology ,medicine.disease ,03 medical and health sciences ,Pseudoaneurysm ,0302 clinical medicine ,Text mining ,030228 respiratory system ,Internal medicine ,medicine.artery ,medicine ,Cardiology ,Treatment strategy ,Surgery ,Cardiology and Cardiovascular Medicine ,business - Published
- 2017
29. An Unusual Case of Arterial Embolism in an Adolescent With a Mitral Valve Repair With a Ring
- Author
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Christos D. Karkos, Efstratios K. Theofilogiannakos, Antonis A. Pitsis, Christos Tourmousoglou, Theodoros Fidanis, and Prodromos Hytiroglou
- Subjects
Pulmonary and Respiratory Medicine ,Male ,medicine.medical_specialty ,Arterial embolism ,Adolescent ,medicine.medical_treatment ,Embolism ,Embolectomy ,Both lower legs ,030204 cardiovascular system & hematology ,Risk Assessment ,03 medical and health sciences ,0302 clinical medicine ,Rare Diseases ,Embolus ,Recent thrombus ,medicine ,Humans ,cardiovascular diseases ,Bioprosthesis ,Heart Valve Prosthesis Implantation ,Mitral valve repair ,Unusual case ,business.industry ,Mitral Valve Insufficiency ,medicine.disease ,Prosthesis Failure ,Treatment Outcome ,030228 respiratory system ,Lower Extremity ,Heart Valve Prosthesis ,cardiovascular system ,Surgery ,Radiology ,Cardiology and Cardiovascular Medicine ,business ,Echocardiography, Transesophageal ,Follow-Up Studies - Abstract
We report a case of an adolescent young man who presented with embolism of both lower legs. The patient had undergone mitral valve repair with a Kalangos biodegradable ring (Bioring SA, Lonay, Switzerland) 9 months earlier. Bilateral embolectomy was performed. Histopathologic examination revealed minute fragments of synthetic material within the embolus, which otherwise consisted of recent thrombus.
- Published
- 2017
30. Cerebral Oxygenation Impairment and S-100β Protein Release During Off-Pump Coronary Artery Revascularization
- Author
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Antonis A. Pitsis, D. Deliaslani, Georgia Tsaousi, Dimitrios G. Vasilakos, K. Karakoulas, and E. Amaniti
- Subjects
Male ,medicine.medical_specialty ,medicine.medical_treatment ,Cardiac Output, Low ,Coronary Artery Bypass, Off-Pump ,Hemodynamics ,S100 Calcium Binding Protein beta Subunit ,Anesthesia, General ,Neuropsychological Tests ,Anastomosis ,Revascularization ,Cohort Studies ,Oxygen Consumption ,Postoperative Complications ,Internal medicine ,Myocardial Revascularization ,medicine ,Humans ,Nerve Growth Factors ,Prospective Studies ,Hypoxia, Brain ,Prospective cohort study ,Aged ,Brain Chemistry ,business.industry ,S100 Proteins ,Middle Aged ,Respiratory quotient ,Coronary arteries ,Anesthesiology and Pain Medicine ,medicine.anatomical_structure ,Anesthesia ,Cardiology ,Arterial blood ,Female ,Cognition Disorders ,Cardiology and Cardiovascular Medicine ,business ,Biomarkers ,Artery - Abstract
Objective To elucidate the magnitude of global cerebral oxygenation impairment, using cerebral oxygenation indices and S-100β protein as potential markers, during off-pump coronary artery bypass grafting (OPCAB). Design Prospective cohort study. Setting Tertiary cardiac center. Participants Thirty-five patients undergoing OPCAB. Interventions Jugular bulb and arterial blood samples for cerebral oxygenation indices (arterial oxygen and carbon dioxide partial pressures, jugular bulb oxygen saturation, arterial-jugular bulb oxygen content, arterial-jugular carbon dioxide partial pressure, brain oxygen extraction ratio, and estimated respiratory quotient) and S-100β protein determination were collected at anesthesia induction; anterior, inferior, and posterior wall anastomoses; after sternal closure; and 6 hours postoperatively. Concomitant hemodynamic data were obtained. The S-100β determination was extended to 12 and 24 hours postoperatively. Measurements and Main Results Heart positioning for the target vessel exposure induced significant hemodynamic deterioration (p < 0.001). Although cerebral oxygenation indices were influenced adversely by a low-cardiac-output state mainly during vertical heart dislocation (p < 0.001), they remained within normal limits. Hemodynamic and cerebral oxygenation statuses reverted to baseline within 6 hours postoperatively. Similarly, S-100β jugular bulb and arterial protein levels presented a gradual increase, which peaked by the end of surgery (means, 0.54 and 0.62 μg/L, respectively; p < 0.001) and then decreased by the first postoperative day. Jugular bulb-arterial S-100β levels were maximized during posterior wall anastomosis (0.098 μg/L; p < 0.01). Conclusion Although exposure of the 3 main coronary arteries during OPCAB promotes derangement of the cerebral oxygen indices and S-100β release, this seems to be transient, remains within the near-normal range, and is reversible almost completely 6 hours postoperatively.
- Published
- 2013
31. Beta-adrenergic receptor polymorphisms: A basis for pharmacogenetics
- Author
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Brian E. Gawronski, Taimour Y. Langaee, Efstratios K. Theofilogiannakos, Timotheos G. Kelpis, Julie A. Johnson, Konstantinos Dean Boudoulas, Antonios A. Pitsis, and Harisios Boudoulas
- Subjects
chemistry.chemical_classification ,Agonist ,medicine.medical_specialty ,Arginine ,Guanine ,business.industry ,medicine.drug_class ,Amino acid ,Minor allele frequency ,chemistry.chemical_compound ,Endocrinology ,chemistry ,Internal medicine ,medicine ,Receptor ,business ,Cytosine ,Pharmacogenetics - Abstract
Aims: Polymorphisms of the β-adrenergic receptor, the frequency of which may differ in ethnic groups, alters β-receptor function. The aim of this study was to elucidate the frequency of β1 and β2-adrenergic receptor polymorphisms in healthy Greeks and to compare with those of Caucasian European (Euro) and African American (AA) origin. Methods: Ninety-nine individuals with a median age of 63 without clinical evidence of any disease were studied. Blood samples were obtained and common β1 and β2-adrenergic receptor polymorphisms that change the en-coded amino acid were determined by pyrosequencing. Results: The most common β1-adrenergic receptor polymorphism in Greeks is nucleotide substitution cytosine for guanine at position 1165 (1165 C/G) resulting in amino acid substitution arginine for glycine at position 389 (389 Arg/Gly) with a minor allele frequency of 28% (Euro 27%, AA 42%); this polymorphism increases the sensitivity of the β1-receptor. The most common β2-adrenergic receptor polymorphism in Greeks is the nucleotide substitution guanine for adenine at position 46 (46 G/A) resulting in amino acid substitution glycine for arginine at position 16 (16 Gly/Arg) with a minor allele frequency of 38% (Euro 41%, AA 50%); this polymerphism facilitates receptor down-regulation during chronic adrenergic stimulation. Conclusion: The most common β1 and β2-adrenergic receptor polymorphisms in the Greek population are similar to those of other European ancestry, and less common than in those of African origin indicating variability in ethnic groups. This information provides insight into common polymorphisms that may assist in optimizing β-antagonist and agonist therapy.
- Published
- 2013
32. Floppy Mitral Valve (FMV) - Mitral Valve Prolapse (MVP) - Mitral Valvular Regurgitation and FMV/MVP Syndrome
- Author
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Antonios A. Pitsis, Konstantinos Dean Boudoulas, and Harisios Boudoulas
- Subjects
lcsh:Diseases of the circulatory (Cardiovascular) system ,medicine.medical_specialty ,medicine.medical_treatment ,Floppy Mitral Valve ,Hemodynamics ,030204 cardiovascular system & hematology ,Ventricular Function, Left ,Transcatheter Aortic Valve Replacement ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,medicine ,Mitral valve prolapse ,Humans ,cardiovascular diseases ,030212 general & internal medicine ,Systole ,Floppy mitral valve (FMV) ,Medicine(all) ,Mitral regurgitation ,Mitral Valve Prolapse ,FMV/MVP syndrome ,business.industry ,MitraClip ,Mitral valve replacement ,Valvular regurgitation ,Mitral Valve Insufficiency ,Mitral valvular regurgitation ,medicine.disease ,Surgery ,Treatment Outcome ,Mitral valve prolapse (MVP) ,lcsh:RC666-701 ,cardiovascular system ,Cardiology ,Cardiology and Cardiovascular Medicine ,business - Abstract
Mitral valve prolapse (MVP) results from the systolic movement of a portion(s) or segment(s) of the mitral valve leaflet(s) into the left atrium during left ventricular (LV) systole. It should be emphasised that MVP alone, as defined by imaging techniques, may comprise a non-specific finding because it also depends on the LV volume, myocardial contractility and other LV hemodynamics. Thus, a floppy mitral valve (FMV) should be the basis for the diagnosis of MVP. Two types of symptoms may be defined in these patients. In one group, symptoms are directly related to progressive mitral regurgitation and its complications. In the other group, symptoms cannot be explained only by the degree of mitral regurgitation alone; neuroendocrine dysfunction has been implicated for the explanation of symptoms in this group of patients that today is referred as the FMV/MVP syndrome. When significant mitral regurgitation is present in a patient with FMV/MVP, surgical intervention is recommended. In patients with a prohibitive risk for surgery, transcatheter mitral valve repair using a mitraclip device may be considered. Furthermore, transcatheter mitral valve replacement may represent an option in the near future as clinical trials are underway. In this brief review, the current concepts related to FMV/MVP and FMV/MVP syndrome will be discussed.
- Published
- 2016
33. Mechanical assistance of the circulation during cardiogenic shock
- Author
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Antonis A, Pitsis, Aikaterini N, Visouli, and Visouli N, Aikaterini
- Subjects
medicine.medical_specialty ,business.industry ,Patient Selection ,Cardiogenic shock ,medicine.medical_treatment ,Shock, Cardiogenic ,Critical Care and Intensive Care Medicine ,Mechanical assistance ,medicine.disease ,behavioral disciplines and activities ,Cardiopulmonary Resuscitation ,humanities ,Extracorporeal Membrane Oxygenation ,Shock (circulatory) ,medicine ,Humans ,Assisted Circulation ,Cardiopulmonary resuscitation ,medicine.symptom ,Intensive care medicine ,business - Abstract
Cardiogenic shock still has a grave prognosis. We present the recent advances in mechanical circulatory support (MCS) for the treatment of refractory cardiogenic shock.The contraindications for short-term MCS in rapid-onset cardiogenic shock are becoming fewer and the threshold for its application has been progressively lowered. Short-term MCS is increasingly used in refractory cardiac arrest and will be probably integrated as the last means in the advanced cardiopulmonary resuscitation algorithm (provided there is experienced team and technical support). Improved device technology has contributed to improved results of long-term MCS. Emergent application of long-term MCS in patients with critical cardiogenic shock after a long history of progressively deteriorating end-stage chronic heart failure should be interpreted as delayed application associated with increased mortality.Although MCS can be life saving in cardiogenic shock, the results are still suboptimal. Mortality is associated with the critical presupport state and the adverse events during MCS. Early initiation of support that meets the patient's requirements, potent support in the early phase, adverse event prevention, global combined management (surgical, interventional, medical), balanced support duration, bridging to further therapeutic modalities including heart transplantation or longer-term support, and advanced technology could offer improved results.
- Published
- 2011
34. Total ventricular assist for long-term treatment of heart failure
- Author
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Vlasis Ninios, Dimitrios Th. Kremastinos, Aikaterini N. Visouli, and Antonis A. Pitsis
- Subjects
Heart Failure ,Male ,Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,Time Factors ,Long term treatment ,business.industry ,medicine.disease ,Heart failure ,Internal medicine ,medicine ,Cardiology ,Humans ,Surgery ,Heart-Assist Devices ,business ,Cardiology and Cardiovascular Medicine ,Aged - Published
- 2011
- Full Text
- View/download PDF
35. Palliative care in heart failure: a position statement from the palliative care workshop of the Heart Failure Association of the European Society of Cardiology
- Author
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Marcia Leventhal, Lynda Blue, Theresa McDonagh, Thomas Grodzicki, James M. Beattie, Frans H. Rutten, Ingrid Bergh, Tiny Jaarsma, Christiane E. Angermann, Piotr Ponikowski, Paul Mohacsi, Kenneth Dickstein, Marco Metra, Inger Ekman, Mary Ryder, Antonis A. Pitsis, John J.V. McMurray, Florian Strasser, Stefan Anker, Antonello Gavazzi, Etienne Delacretaz, and Scott A Murray
- Subjects
Position statement ,CLINICAL-OUTCOMES ,medicine.medical_specialty ,Palliative care ,Family support ,Cardiology ,MEDLINE ,Heart failure ,COMMUNICATION ,Quality of life (healthcare) ,QUALITY-OF-LIFE ,Internal medicine ,MANAGEMENT ,medicine ,Humans ,Intensive care medicine ,ELDERLY-PATIENTS ,Societies, Medical ,Curative care ,Depression (differential diagnoses) ,LUNG TRANSPLANTATION ,OLDER ,business.industry ,AMBULATORY PATIENTS ,DEPRESSION ,medicine.disease ,END ,Education, Medical, Continuing ,Medical emergency ,Cardiology and Cardiovascular Medicine ,business - Abstract
Heart failure is a serious condition and equivalent to malignant disease in terms of symptom burden and mortality. At this moment only a comparatively small number of heart failure patients receive specialist palliative care. Heart failure patients may have generic palliative care needs, such as refractory multifaceted symptoms, communication and decision making issues and the requirement for family support. The Advanced Heart Failure Study Group of the Heart Failure Association of the European Society of Cardiology organized a workshop to address the issue of palliative care in heart failure to increase awareness of the need for palliative care. Additional objectives included improving the accessibility and quality of palliative care for heart failure patients and promoting the development of heart failure-orientated palliative care services across Europe. This document represents a synthesis of the presentations and discussion during the workshop and describes recommendations in the area of delivery of quality care to patients and families, education, treatment coordination, research and policy.
- Published
- 2009
36. The Potential Predictive Value of Preoperative Brain Natriuretic Peptide Levels in Coronary Artery Bypass Grafting Surgery
- Author
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Antonios A. Pitsis, Elias Basayannis, Konstantinos Tziomalos, Margarita Kataropoulou, Aikaterini Mpalaska, Georgios Kyriazis, Asterios Karagiannis, Vasilios G. Athyros, and Julia Sevastidou
- Subjects
medicine.medical_specialty ,Ejection fraction ,biology ,Bypass grafting ,business.industry ,Cardiogenic shock ,Postoperative complication ,Brain natriuretic peptide ,medicine.disease ,Surgery ,Coronary artery disease ,medicine.anatomical_structure ,Anesthesia ,Internal medicine ,biology.protein ,Cardiology ,Medicine ,Creatine kinase ,cardiovascular diseases ,business ,Artery - Abstract
Aims: The aim of this study was to assess whether preoperative and postoperative brain natriuretic peptide (BNP) levels could be used as predictors of postoperative complications and outcome in patients with coronary artery dis- ease and ischemic heart failure undergoing on-pump or off-pump coronary artery bypass grafting surgery (CABG). Methods and Results: Fifty-eight patients (56 males and two females) with a median age of 65.3±9.9 years were included in the study. Thirty-eight patients (65.5%) underwent on-pump CABG, and 20 patients (34.5%) underwent off-pump CABG. BNP levels were determined within 24 hours before CABG and serially at 6 hours, 24 hours, 3, 7 and 30 days af- ter CABG. Creatine phosphokinase myocardial band (CK-MB) levels were measured 1, 3, and 7 days after CABG. BNP and CK-MB levels did not differ significantly between the two groups at any time point. Preoperative BNP levels inde- pendently predicted the occurrence of cardiogenic shock and more importantly, short-term mortality. Neither preoperative left ventricular ejection fraction nor postoperative BNP or CK-MB levels at any time point showed any significant inde- pendent prognostic value for any postoperative complication. Conclusion: Our results suggest that it may be prudent to more closely monitor patients with higher preoperative BNP levels for possible postoperative complications.
- Published
- 2009
37. Contents Vol. 113, 2009
- Author
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Sofia Cabral, Jeffrey S. Borer, Frédéric Mouquet, Dimitris Tousoulis, Francis Juthier, Frans Beltran, Jin-guo Chen, Philippe Asseman, André Vincentelli, P. Saccucci, P. M. Klodt, Daniel F. Catanzaro, Jun Qian, Jun-jie Zhang, Luísa Caiado, Nikos Papageorgiou, Costas Tentolouris, Roen K. Jourjikiya, András Palotás, F. D’Annibale, Xue-wen Sun, Anuj Gupta, N. Bottini, Christodoulos Stefanadis, Thierry H. Le Jemtel, Catarina Gomes, Tak W. Kwan, Ana Meireles, Edmund M. Herrold, Song Lin, Sylvestre Maréchaux, Marat A. Mukhamedyarov, Ada R. Ene, Vasco Dias, Feng Chen, Qing-jiong Ji, Annaïk Bellouin, Georges Fayad, E. Bottini, Wilbert S. Aronow, Pierre Vladimir Ennezat, Antonis A. Pitsis, Feng Li, David Montaigne, M. Banci, Jean Jacques Bauchart, Nuno Antunes, A. Dofcaci, Sharada L. Truter, Ai-ping Zhang, V. S. Kudrin, Jean Luc Auffray, V. V. Kirillova, Fei Ye, R. R. Nigmatullina, Themy F. Dumlao, Harisios Boudoulas, John N. Carter, Philippe Pibarot, Alain Berrebi, Zhi-zhong Liu, Phyllis G. Supino, Christophe L. Dubois, Gerhard Blümchen, F. Gloria-Bottini, Severo Torres, G. Trionfera, Shao-Liang Chen, Miguel Silva Vieira, A. Magrini, and Zhong-Sheng Zhu
- Subjects
Traditional medicine ,business.industry ,Medicine ,Pharmacology (medical) ,Cardiology and Cardiovascular Medicine ,business - Published
- 2009
38. Acute heart failure: is there a role for surgery?
- Author
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Antonis A. Pitsis and C. E. Anagnostopoulos
- Subjects
Heart Failure ,medicine.medical_specialty ,business.industry ,Rapid expansion ,Myocardial Infarction ,Less invasive ,Coronary surgery ,Papillary Muscles ,medicine.disease ,Cardiac surgery ,Surgery ,Treatment Outcome ,Heart failure ,Acute Disease ,Circulatory system ,medicine ,Humans ,Angina, Unstable ,Cardiac Surgical Procedures ,Cardiomyopathies ,Cardiology and Cardiovascular Medicine ,Acute mi ,Surgical treatment ,business - Abstract
Many of the disorders and lesions leading to acute heart failure can be treated surgically. Modern surgical techniques like the off pump coronary surgery, newer techniques for the surgical treatment of the mechanical complications of acute MI and valvular reparative techniques have been added to the surgical armamentarium in recent years. Modern ventricular assist devices have started their career in the clinical arena promising to be less invasive. At the same time the spectrum of indications for mechanical circulatory support continues to witness a rapid expansion. Technical advances have led to an evolution of surgical strategies. Heart failure surgery is now in a position to offer improved outcomes, avoidance of recurrence of acute heart failure or the development of advanced chronic heart failure.
- Published
- 2007
39. Advanced chronic heart failure
- Author
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Marco Metra, John J.V. McMurray, Antonis A. Pitsis, Antonello Gavazzi, Paul Mohacsi, Michel Komajda, Alan G. Fraser, Claes Hakan Bergh, Stefan D. Anker, Piotr Ponikowski, Henry J. Dargie, Dirk L. Brutsaert, Tiny Jaarsma, Michael Böhm, Kenneth Dickstein, and Heart Failure Association of the European Society of Cardiology
- Subjects
medicine.medical_specialty ,Cost effectiveness ,CONVERTING-ENZYME-INHIBITORS ,IMPLANTABLE CARDIOVERTER-DEFIBRILLATOR ,medicine.medical_treatment ,Cardiac resynchronization therapy ,heart failure ,CLINICAL-TRIALS UPDATE ,COST-EFFECTIVENESS ,Ventricular Dysfunction, Left ,6-MINUTE WALK TEST ,Quality of life ,Internal medicine ,ONE-YEAR MORTALITY ,medicine ,Humans ,Intensive care medicine ,Survival rate ,CARDIAC-RESYNCHRONIZATION THERAPY ,Ejection fraction ,treatment ,business.industry ,BETA-BLOCKERS ,Implantable cardioverter-defibrillator ,medicine.disease ,Combined Modality Therapy ,VENTRICULAR SYSTOLIC DYSFUNCTION ,Survival Rate ,OXYGEN-CONSUMPTION ,Clinical research ,Heart failure ,Chronic Disease ,Cardiology ,prognosis ,Cardiology and Cardiovascular Medicine ,business - Abstract
Therapy has improved the survival of heart failure (HF) patients. However, many patients progress to advanced chronic HF (ACHF). We propose a practical clinical definition and describe the characteristics of this condition. Patients that are generally recognised as ACHF often exhibit the following characteristics: 1) severe symptoms (NYHA class III to IV); 2) episodes with clinical signs of fluid retention and/or peripheral hypoperfusion; 3) objective evidence of severe cardiac dysfunction, shown by at least one of the following: left ventricular ejection fraction 1 HF hospitalisation in the past 6 months; 6) presence of all the previous features despite optimal therapy. This definition identifies a group of patients with compromised quality of life, poor prognosis, and a high risk of clinical events. These patients deserve effective therapeutic options and should be potential targets for future clinical research initiatives. (C) 2007 European Society of Cardiology. Published by Elsevier B.V. All rights reserved.
- Published
- 2007
40. Acute intraoperative heparin-induced thrombocytopenia (HIT) and thrombosis during coronary artery bypass grafting: Two case reports providing evidence for the role of preoperative LMWH in triggering sensitization
- Author
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Giannoula Soufla, H. Poumpouridou-Kioura, A. Pitsis, E. Melissari, Chryso Kanthou, N. Matoula, A. Angelidis, and Mazen Khoury
- Subjects
Male ,medicine.medical_specialty ,medicine.drug_class ,medicine.medical_treatment ,Activated clotting time ,Low molecular weight heparin ,030204 cardiovascular system & hematology ,Fondaparinux ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,Heparin-induced thrombocytopenia ,Medicine ,Humans ,Coronary Artery Bypass ,Off-pump coronary artery bypass ,Aged ,medicine.diagnostic_test ,business.industry ,Antithrombin ,Anticoagulant ,Thrombosis ,Hematology ,Heparin ,Heparin, Low-Molecular-Weight ,Middle Aged ,medicine.disease ,Thrombocytopenia ,030228 respiratory system ,Cardiology ,business ,medicine.drug - Abstract
Introduction Systemic anticoagulation is necessary during cardiac surgery. To date, the only well established anticoagulation protocol involves the use of heparin. However, heparin can cause heparin-induced thrombocytopenia (HIT) a potentially life threatening immune-mediated thromboembolic syndrome. Until now, devastating consequences of HIT syndrome in patients undergoing heart surgery have been described, but only postoperatively. Here we report the development of HIT syndrome during cardiac revascularization by intra-operative heparin administration in two patients previously exposed to LMWH. Patients/methods We report on two patients who developed rapid and profound intravascular coagulation with severe thrombocytopenia (platelet count decreased from ≥ 250 × 109/L to 50 × 109/L) due to HIT development caused by heparin administration during coronary artery bypass graft surgery. In addition we report that fondaparinux, given intra-operatively in association with antithrombin, may be a suitable alternative anticoagulant for successfully preventing the devastating consequences of intra-operative HIT development. Conclusion To our knowledge, this is the first report describing the development of acute intra-operative HIT, secondary to high-dose UFH administered for coronary revascularization, in which the unexpected presence of platelet-activating anti-PF4/heparin antibodies at surgery was explained by preoperative administration of a one-week course of LMWH but without any preoperative evidence for HIT.
- Published
- 2015
41. Response to Letter Regarding Article, 'A Word of Caution: Risk of Device Erosion After Percutaneous Treatment of Atrial Septal Defect in Patients With Dilated Aortic Root'
- Author
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Vasilis D Thanopoulos, Alexandros Kallifatidis, Antonis A. Pitsis, Petros S. Dardas, Vlasis Ninios, and Efstratios K. Theofilogiannakos
- Subjects
Male ,congenital, hereditary, and neonatal diseases and abnormalities ,medicine.medical_specialty ,Percutaneous ,Septal Occluder Device ,Aortic Diseases ,Aortic disease ,Heart Septal Defects, Atrial ,Bicuspid aortic valve ,Physiology (medical) ,Internal medicine ,Cardiac tamponade ,medicine ,Humans ,In patient ,cardiovascular diseases ,Dilated aortic root ,Ultrasonography ,business.industry ,medicine.disease ,humanities ,Cardiac Tamponade ,Surgery ,cardiovascular system ,Cardiology ,Cardiology and Cardiovascular Medicine ,business - Abstract
We appreciate the interest of Dr Heidrich and his colleagues in our recent report.1 We agree overall with their comments, and we think that, until large retrospective or perspective studies clarify this issue, bicuspid aortic valve as opposed to tricuspid …
- Published
- 2015
42. The Peroneocalcaneus Internus Muscle: An Unusual Cause of Posterior Ankle Impingement
- Author
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George Pitsis, Martin Sullivan, James Linklater, and Robert Seipel
- Subjects
Male ,030203 arthritis & rheumatology ,Adolescent ,business.industry ,Posterior ankle impingement ,Pain ,030229 sport sciences ,Anatomy ,Magnetic Resonance Imaging ,Foot Diseases ,03 medical and health sciences ,Treatment Outcome ,0302 clinical medicine ,Humans ,Medicine ,Orthopedics and Sports Medicine ,Surgery ,Ankle Injuries ,Muscle, Skeletal ,business - Published
- 2005
43. Minimally Invasive Transapical Aortic Valve Implantation and Simultaneous Major Pulmonary Resection
- Author
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Timotheos G. Kelpis, Antonis A. Pitsis, Nikolaos Nikoloudakis, and Vassilios A. Economopoulos
- Subjects
Pulmonary and Respiratory Medicine ,Aortic valve ,medicine.medical_specialty ,business.industry ,Treatment outcome ,Treatment of lung cancer ,medicine.disease ,Surgery ,Stenosis ,medicine.anatomical_structure ,X ray computed ,Severity of illness ,Aortic valve surgery ,cardiovascular system ,Medicine ,Radiology ,Pulmonary resection ,Cardiology and Cardiovascular Medicine ,business - Abstract
We report a 71-year-old male who underwent successful minimally invasive transapical aortic valve implantation to treat severe aortic stenosis, with simultaneous pulmonary resection for the treatment of lung cancer. At five-year follow-up the patient remains free of symptoms (NYHA I) and recurrence.
- Published
- 2013
44. Bi-ostial coronary thrombosis due to heparin induced thrombocytopenia
- Author
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Dimitris D. Tsikaderis, Vlasis Ninios, Antonis A. Pitsis, Efstratios K. Theofilogiannakos, Petros S. Dardas, Anastassia N. Spyrou, and Nikos E. Mezilis
- Subjects
medicine.medical_specialty ,business.industry ,Heparin ,Intra-Aortic Balloon Pumping ,medicine.disease ,Text mining ,Coronary thrombosis ,Direct thrombin inhibitor ,Aortic valve stenosis ,Internal medicine ,Heparin-induced thrombocytopenia ,medicine ,Cardiology ,Cardiology and Cardiovascular Medicine ,business ,Antithrombins ,medicine.drug - Published
- 2013
45. Bone Scintigraphy in Acetabular Labral Tears
- Author
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Geoffrey Storey, Warwick Bruce, George Pitsis, Robert Loneragan, Siri Kannangara, and Hans Van der Wall
- Subjects
Adult ,Cartilage, Articular ,musculoskeletal diseases ,medicine.medical_specialty ,Eyebrow ,Technetium Tc 99m Medronate ,Scintigraphy ,Sensitivity and Specificity ,Arthroscopy ,Degenerative disease ,Predictive Value of Tests ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Radionuclide Imaging ,Aged ,Hip dysplasia ,medicine.diagnostic_test ,business.industry ,Acetabulum ,General Medicine ,Middle Aged ,medicine.disease ,Magnetic Resonance Imaging ,eye diseases ,Surgery ,medicine.anatomical_structure ,Bone scintigraphy ,Labral tears ,sense organs ,Radiology ,Radiopharmaceuticals ,business ,Hip Injuries - Abstract
Background: Acetabular labral tears are an increasingly recognized cause of hip pain in young adults with hip dysplasia and older patients with degenerative disease of the hips. Methods: The authors analyzed retrospectively bone scintigraphy in 27 patients with acetabular labral tears diagnosed by MRI/ arthroscopy. Analysis was also made of scintigraphy in 30 patients without labral tears being investigated for other causes of hip pain for comparison. Results: Patients with labral tears had hyperemia of the superior or superomedial aspect of the acetabulum and increased delayed uptake in either a focal superior pattern or in an "eyebrow" pattern of a superomedial tear. This pattern was not seen in any other sources of hip pathology. Conclusion: Uptake in the superior or superomedial aspect of the acetabular rim is characteristic of a labral tear. Absence of this pattern carries a high negative predictive value for the diagnosis.
- Published
- 2004
46. eComment. Is flexible band or rigid ring the best choice for functional tricuspid regurgitation?
- Author
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Antonis A. Pitsis, Dimitrios Dougenis, Christos Tourmousoglou, and Nikolaos Nikoloudakis
- Subjects
Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,Tricuspid valve ,business.industry ,030204 cardiovascular system & hematology ,Cardiac Valve Annuloplasty ,Ring (chemistry) ,03 medical and health sciences ,0302 clinical medicine ,medicine.anatomical_structure ,Muscle Rigidity ,030228 respiratory system ,Tricuspid Valve Insufficiency ,Functional tricuspid regurgitation ,Internal medicine ,medicine ,Cardiology ,Surgery ,Cardiology and Cardiovascular Medicine ,business - Published
- 2016
47. Effect of Vertical Dimension on Efficacy of Oral Appliance Therapy in Obstructive Sleep Apnea
- Author
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M. Ali Darendeliler, Andrew J. Pitsis, Peter Petocz, Helen Gotsopoulos, and Peter A. Cistulli
- Subjects
Adult ,Male ,musculoskeletal diseases ,Pulmonary and Respiratory Medicine ,Mandibular advancement splint ,Time Factors ,Polysomnography ,Oral appliance ,Mandible ,Critical Care and Intensive Care Medicine ,Random Allocation ,Surveys and Questionnaires ,medicine ,Humans ,Sleep Apnea, Obstructive ,Cross-Over Studies ,medicine.diagnostic_test ,business.industry ,fungi ,Apnea ,Sleep apnea ,Middle Aged ,medicine.disease ,Crossover study ,body regions ,Obstructive sleep apnea ,Treatment Outcome ,Splints ,Jaw Relation Record ,Patient Satisfaction ,Anesthesia ,Linear Models ,Female ,medicine.symptom ,business ,Hypopnea - Abstract
The aim of this study was to assess the effect of bite opening induced by a mandibular advancement splint (MAS) on efficacy and side effects in the treatment of obstructive sleep apnea. In a randomized crossover fashion, 23 adult patients received either MAS-1 (4 mm of interincisal opening) or MAS-2 (14 mm of interincisal opening) for 2 weeks, followed by the alternate treatment for 2 weeks, with an intervening 1-week washout. Complete response was defined as a resolution of symptoms and a reduction in apnea/hypopnea index (AHI) to less than 5 per hour. Partial response was defined as improved symptoms and a reduction in AHI of 50% or more, with the AHI remaining at a value of 5 or more per hour. Both MAS-1 and MAS-2 produced similar reductions in mean (+/- SEM) AHI from baseline: 21 +/- 2 versus 8 +/- 1/hour and 21 +/- 2 versus 10 +/- 2/hour, respectively (p < 0.001). Either complete response or partial response occurred in 74 and 61% of patients with MAS-1 and MAS-2, respectively. Subjective improvements were reported with both appliances by the majority of patients. Patients preferred MAS-1 (78 versus 22%, p = 0.007). This study suggests that the amount of bite opening induced by MAS does not have a significant impact on treatment efficacy but does have an impact on patient acceptance.
- Published
- 2002
48. Field Configuration in Complex Transnational Fields: Developing a Response Strategy to HIV/AIDS
- Author
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Matthew Mount and Tyrone S. Pitsis
- Subjects
Acquired immunodeficiency syndrome (AIDS) ,Response strategy ,Institutionalisation ,Field (Bourdieu) ,Political economy ,Social transformation ,Political science ,medicine ,General Medicine ,Economic system ,medicine.disease ,Institutional theory ,Pact - Abstract
This paper presents the inductive findings of a 2-year field study documenting the formation of the PACT for Social Transformation, a meta-organizational coalition of 15 geographically dispersed yo...
- Published
- 2017
49. Aortic Valve Stenosis in Alkaptonuria
- Author
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Antonis A. Pitsis, Christos Tourmousoglou, and Nikolaos Nikoloudakis
- Subjects
Male ,0301 basic medicine ,Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,030204 cardiovascular system & hematology ,Alkaptonuria ,03 medical and health sciences ,Rare Diseases ,0302 clinical medicine ,Text mining ,Internal medicine ,medicine ,Humans ,Minimally Invasive Surgical Procedures ,Bioprosthesis ,Heart Valve Prosthesis Implantation ,business.industry ,Aortic Valve Stenosis ,Middle Aged ,medicine.disease ,Treatment Outcome ,030104 developmental biology ,Aortic valve stenosis ,Cardiology ,Surgery ,Cardiology and Cardiovascular Medicine ,business ,Follow-Up Studies - Published
- 2017
50. Chronic thromboembolic pulmonary hypertension: do not miss the chance for an early diagnosis
- Author
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Sofia Akritidou, Vasilis Bagalas, Evdokia Sourla, Ioannis Stanopoulos, Afroditi K. Boutou, Georgia Pitsiou, Asimina Paspala, Katerina Manika, Katerina Tsolakidou, Ioannis Kioumis, and Antonis A. Pitsis
- Subjects
Diagnostic Imaging ,medicine.medical_specialty ,Hypertension, Pulmonary ,Exercise intolerance ,Air trapping ,Embolism and Thrombosis ,Diagnosis, Differential ,Internal medicine ,medicine ,Palpitations ,Humans ,medicine.diagnostic_test ,business.industry ,Angiography ,General Medicine ,Articles ,Middle Aged ,medicine.disease ,Pulmonary hypertension ,Pulmonary embolism ,Pulmonology ,Early Diagnosis ,Female ,Radiology ,medicine.symptom ,Differential diagnosis ,business ,Pulmonary Embolism ,Tomography, X-Ray Computed ,Follow-Up Studies - Abstract
Patient: Female, 45 Final Diagnosis: Chronic thromboembolic pulmonary hypertension (CTEPH) Symptoms: Dyspnea • fatigue • palpitations Medication: — Clinical Procedure: Right heart catheterization • pulmonary endarterectomy Specialty: Pulmonology Objective: Mistake in diagnosis Background: Chronic thromboembolic pulmonary hypertension most often results from obstruction of the pulmonary vascular bed by nonresolving thromboemboli. Misdiagnosis of the disease is common because patients often present with subtle or nonspecific symptoms. Furthermore, some features in chest imaging may mimic parenchymal lung disease. The most clinically important mimic in high-resolution chest tomography is air trapping, which can be seen in a variety of small airway diseases. Case Report: We present the case of a 45-year-old woman with a long history of dyspnea and exercise intolerance, misdiagnosed with allergic alveolitis. The diagnosis of CTEPH was finally established with computed tomography (CT) angiography and hemodynamics. Conclusions: Chronic thromboembolism is under-diagnosed and also frequently misdiagnosed in clinical practice. The present report aims to increase the awareness of clinicians towards an accurate diagnosis of the disease, which is necessary for the early referral of CTEPH patients for operability.
- Published
- 2014
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