Publications by authors named "Soner Yavas"

Background: The aim of the study is to compare the results of patients who had moderate or severe tricuspid insufficiency (TI) at the time of left ventricular assist device (LVAD) implantation that did not undergo intervention.

Methods: Between October 2013 and December 2019, 144 patients who did not undergo tricuspid valve repair (TVR) during LVAD implantation in our department were included in the study. The patients were divided into two groups according to the TI grade; Group 1: 106 patients (73.

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These evidence-based guidelines from the Turkish Society of Cardiovascular Surgery, National Society of Vascular and Endovascular Surgery, and Phlebology Society intend to support clinicians in best decisions regarding the treatment of venous thromboembolism (VTE). The Editor was selected by the three national societies and was tasked with the recruitment of the recognized panel. All financial support was solely derived from the sponsoring societies without the direct involvement of industry or other external stakeholders.

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Introduction: In this study, we evaluated patient response and haemodynamic parameters in patients with low ejection fraction undergoing coronary bypass surgery with either fentanil or remifentanil in conjunction with etomidate.

Material And Methods: We evaluated 30 cases of coronary artery surgery, which were divided into two treatment groups ( = 15 each). In group F (fentanil group), the following regimen was employed for anaesthesia induction: 1 mg/kg lidocaine, 0.

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Pulmonary embolism after endovenous radiofrequency ablation is very rare, but a clinically severe complication. Herein, we report a case of pulmonary embolism after endovenous radiofrequency ablation. Early after radiofrequency ablation pulmonary embolism developed and extracorporeal membrane oxygenation implantation was performed.

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Background: Our study aimed to compare HTEA and intravenous patient-controlled analgesia (PCA) in patients undergoing coronary bypass graft surgery (CABG), based on haemodynamic parameters and myocardial functions.

Materials And Methods: The study included 34 patients that were scheduled for elective CABG, who were randomly divided into 2 groups. Anesthesia was induced and maintained with total intravenous anesthesia in both groups while intravenous PCA with morphine was administered in Group 1 and infusion of levobupivacaine was administered from the beginning of the anesthesia in Group 2 by thoracic epidural catheter.

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Background: The mortality and morbidity rates of even extensive thoracoabdominal replacement have improved markedly in recent years. We investigated the effects of a temporary occlusion of the aorta as a direct precondition and temporary occlusion of the axillary artery for remote preconditioning to determine any effects that preconditioning may have on indirect (nonischemic) injuries to visceral organs (indirect effects of remote ischemia/reperfusion injury).

Methods: Thirty-seven New Zealand white rabbits were divided into five groups: controls (sham-operated; group 1); direct ischemia to the infrarenal aorta without preconditioning (group 2); direct ischemic preconditioning to the infrarenal aorta (group 3); remote ischemic preconditioning before clamping the infrarenal aorta (group 4); and simultaneous direct aortic and remote ischemic preconditioning before the clamping and during clamping of the infrarenal aorta (group 5).

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Objective: Coagulation tests are influenced by pre-analytic conditions such as blood collection systems. Change of glass collection tubes with plastic ones will cause alteration of the test results. The aim of this study was to compare three plastic blood collection tubes with a standard glass blood collection tube and each plastic collection tube with the other two for possible additional tube-to- tube differences.

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Objective: Pulmonary hypertension (PHT) exacerbates the functions of both ventricles. This prospective, randomised study was planned to investigate the effects of PHT on kinetics of both ventricles and the septum.

Methods: Twenty-five patients were randomly selected among the patients who had been planned to undergo mitral valve replacement (MVR) because of isolated mitral stenosis and divided into two groups according to their preoperative pulmonary artery pressure (PAP) values.

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The existence of interindividual drug response variability has been known for a long time. Individual susceptibility which might cause toxicity or inadequate treatment is important in drug therapy. Genetic polymorphisms in genes responsible for drug response are expected to be useful in keeping track of differences among individuals.

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Background: The aim of this study was to assess the effect of gender on mortality and morbidity in carotid endarterectomy (CEA) patients.

Methods: Forty-one female and 150 male patients who underwent isolated CEA operations, between 1994 and 2007, were included in this study. To find the role of gender in isolated CEA operations, patients with a previous history of cardiac operations, coronary interventions, and a staged cardiac and/or vascular operation were excluded from the study.

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Unilateral selective cerebral perfusion through right brachial artery is one of the cerebral protection methods for aortic arch repair. The purpose of this study is to determine whether cerebral perfusion through contra-lateral hemisphere is adequate or not. Seventeen consecutive patients underwent aortic arch repair using low flow antegrade selective cerebral perfusion (ASCP) through right brachial artery under moderate hypothermia.

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Objective: This study investigates distal organ protection during moderately hypothermic right brachial artery selective antegrade cerebral perfusion (MHSACP) in patients undergoing aortic arch repair.

Methods: Fifty patients undergoing ascending aorta/aortic arch repair using the MHSACP technique (study group) were compared with another 50 patients randomly selected amongst those undergoing moderately hypothermic open heart procedures (control group). The data from successive clinical examinations and blood samplings were then compared to detect any sign of distal organ damage attributable to the MHSACP technique.

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In the presence of multiple concomitant occlusive and aneurysmal diseases, selection of the brain protection method is a primary concern. A case with a disease triad of stenotic lesions in internal carotid arteries, coronary artery atherosclerosis, and an ascending-arcus aorta aneurysm is presented. We simultaneously performed right carotid endarterectomy, coronary artery bypass grafting, and graft replacement of the ascending-arcus aorta.

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Background: The aim of this study was to assess the effect of timing and techniques of tracheostomy on mortality and morbidity in cardiovascular surgery patients.

Methods: Between January 2000 and October 2007, a total of 19,559 cardiac and vascular operations were performed in our hospital, and 205 of these patients (1.04%) who underwent a tracheostomy procedure were included in this retrospective study.

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A 17-year-old man with coarctation of the thoracic aorta, bicuspid aortic valve, perimembranous ventricular septal defect, and acute type A dissection of the ascending aorta underwent emergency repair for dissection by means of single-stage replacement of not only the aortic valve and ascending aorta, but also simultaneous repair of the coarctation by graft interposition. These combined conditions comprised some difficulties that included decisions on the optimal timing and sequence of surgical repair, technique, and circulatory support.

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Background: Four methods of radial artery harvesting were evaluated with transmission electron microscopy and tissue lipid peroxidation to determine the degree of damage to the artery.

Methods: Radial artery samples from 4 groups of patients (10 samples from each group) who underwent coronary artery surgery were evaluated. In groups I and II, radial arteries were stored in a solution containing 100 mL patients' own heparinized oxygenated blood and 5 mg nitroglycerine.

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Background: The objective of our study was to investigate the anti-inflammatory effect and inhibiting action of diltiazem, a calcium channel blocking agent, on the systemic inflammatory response seen after cardiopulmonary bypass (CPB) in humans, in a controlled prospective study.

Material/methods: Two groups of 15 candidates for coronary artery bypass graft were enrolled in the study. In the study group, 1 g/kg/min of diltiazem was infused during cardiopulmonary bypass, while the control group received saline.

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Background: We planned a prospective study to evaluate the regression of left ventricular mass one year after surgery in older patients (
Material/methods: Between 1998 and 2000, 54 patients had aortic valve replacement with stentless bioprostheses (14 CryoLife-O'Brien, 40 Medtronic Freestyle), and 62 patients had aortic valve replacement with St. Jude Medical mechanical valve.

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Background: Coronary artery anomalies are discovered in less than 1% of angiography series. Since the number of angiographies and coronary bypass operations are increasing significantly every day, these anomalies are of clinical importance.

Material/methods: 58,023 coronary angiographies were performed in the cardiology clinic of our hospital from 1978 to 2001.

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