Yazar "Canbaz, S." seçeneğine göre listele
Listeleniyor 1 - 13 / 13
Sayfa Başına Sonuç
Sıralama seçenekleri
Öğe Comparison between normothermic and mild hypothermic cardiopulmonary bypass in myocardial revascularization of patients with left ventricular dysfunction(Sage Publications Ltd, 2013) Yuksel, V.; Canbaz, S.; Ege, T.Aims: The aim of this study was to investigate whether normothermic bypass is superior to mild hypothermia in patients with poor left ventricular function. This was achieved by studying defibrillation rates, postoperative requirements of cardiac pacing or other morbidity issues and mortality in patients with left ventricular dysfunction operated upon for elective coronary revascularization. Methods: Data were collected retrospectively from 252 consecutive patients with left ventricular dysfunction (ejection fraction <= 35%) undergoing coronary revascularization between January 2005 and January 2011. Patients operated upon under mild hypothermia (32 degrees C) were placed in Group 1 and under normothermia (>= 35 degrees C) were placed in Group 2. Comorbidities and postoperative complications were recorded. Results: There were 128 patients in Group 1 and 124 patients in Group 2. Plasma concentrations of CK-MB and troponin T peaked at 6 hours postoperatively, with no significant difference between the groups. Despite longer aortic cross-clamp time and total bypass time in Group 2, significantly less defibrillation requirement rates after aortic declamping was observed. Hospital mortality occured in 16 patients; 8 patients in each group. Conclusions: Normothermia enables less requirement for defibrillation after aortic declamping and postoperative cardiac pacing in patients with left ventricular dysfunction, which may be interpreted as better myocardial protection under normothermic bypass. However, maintaining normothermia had no effect on postoperative stroke, postoperative atrial fibrillation, renal failure development and mortality.Öğe Comparison of early and midterm Results of Kalangos Bioring® versus De Vega annuloplasty in functional tricuspid regurgitatione(John Wiley & Sons Ltd, 2010) Ketenciler, S.; Ege, T.; Sungun, M.; Canbaz, S.; Gurkan, S.; Huseyin, S.; Duran, E.[Abstract Not Available]Öğe Coronary artery bypass graft surgery in patients with left ventricular dysfunction(Edizioni Minerva Medica, 2015) Yuksel, V.; Canbaz, S.; Ege, T.Aim. The aim of this study was to investigate effects of congestive heart failure on coronary revascularization results in patients with left ventricular dysfunction and operated for elective coronary revascularization. Methods. The data were collected retrospectively from 126 consecutive patients with left ventricular dysfunction caused by coronary artery disease between January 2007 and January 2012. Patients admitted to hospital with angina complaints without congestive heart failure symptoms were group 1 and patients with severe congestive heart failure symptoms were group 2. Accompanying diseases, postoperative complications and mortality were recorded. Results. There were 66 patients in group 1 and 60 patients in group 2. Postoperative maximal inotropic support was necessary in 24 (36.4%) patients in group 1 for a mean duration of 1.6 +/- 0.9 days and in 34 (56.7%) patients in group 2 for a mean duration of 2.9 +/- 0.7 days. The proportion of patients with postoperative stay at the intensive care unit longer than 48 hours was significantly higher in group 2 compared to group 1. (p=0.0001) Hospital mortality was significantly higher in group 2 compared to group 1. (p=0.0001) Conclusion. Congestive heart failure aggravates the outcome after coronary artery bypass surgery in patients with left ventricular dysfunction.Öğe Early Results of surgical radiofrequency ablation in patients with atrial fibrillation undergoing open heart surgery(John Wiley & Sons Ltd, 2010) Gurkan, S.; Huseyin, S.; Ege, T.; Canbaz, S.; Canturk, M.; Dikmengil, M.; Duran, E.[Abstract Not Available]Öğe Histopathological comparison of vascular wall damage created by external cross-clamp and endoluminal balloon occlusion techniques(Edizioni Minerva Medica, 2009) Ozalp, B.; Canbaz, S.; Huseyinova, G.; Duran, E.Aim Almost all cross-clamps utilized in vascular surgery, even atraumatic clamps, have been shown to cause mechanical damage to the vascular wall. in recent years, surgical procedures using an endoluminal balloon technique have been reported as an alternative occlusion strategy. This study discusses the histopathological characteristics and comparison between vascular wall damage secondary to the two occlusion techniques in the early postoperative period. Methods. Twelve adult rabbits were divided into two experimental groups: the clamp group (N.=6) and the balloon group (N.=6). External cross-clamp occlusion was applied to the abdominal aorta for 30 minutes via laparotomy in the clamp group. in the balloon group, occlusion was applied for 30 minutes by inflating the catheter balloon, which was inserted through the iliac artery and advanced into the abdominal aorta. The appropriate aortic segments were subsequently extracted in both groups and tissue samples were examined by fight and electron microscopy. Finally, the samples were scored for grade of tissue damage. Results. In both experimental groups, tissue damage was apparent. in the investigations carried out under light microscopy, it was observed that the damage caused by balloon occlusion was remarkably less than the damage caused by the cross-clamp technique. in the balloon group, eight tissue samples (66.7%) had grade 1 damage. On the other hand, five tissue samples had grade 3 damage, all of which were in the clamp group. Investigation by electron microscopy revealed that greater intimal, medial, and adventitial damage occurred in the vascular walls of the clamp group samples, and this also corresponded with an increase in immune response and intraluminal thrombosis. Conclusion. External clamp and internal balloon occlusion techniques applied to the aorta were compared, and widespread intimal and medial damage were observed in both techniques. However, endoluminal occlusion of the aorta should be the technique of choice in properly selected cases, since it results in lower damage grades, and it should also be used if application of an external clamp is technically difficult.Öğe Iatrogenic femoral arterio-venous fistula and pseudoaneurysm following catheter insertion for hemodialysis(Edizioni Minerva Medica, 2007) Gur, O.; Canbaz, S.; Karaca, O. G.; Duran, E.[Abstract Not Available]Öğe Is it Necessary to Use an Intraluminal Shunt in Symptomatic Patients with Contralateral Carotid Artery Stenosis ?(Acta Medical Belgica, 2014) Yuksel, V.; Canbaz, S.; Ege, T.; Sunar, H.Background : We aimed to investigate our results of carotid endarterectomy operations in symptomatic patients operated by using an intraluminal shunt and without use of an intraluminal shunt in patients with contralateral carotid artery stenosis. Methods : We reviewed the results of 144 carotid endarterectomy operations in patients with contralateral carotid artery stenosis from January 2007 to December 2012. These patients were allocated in 2 groups. Group 1 (n = 70) consisted of the patients operated by using an intraluminal shunt and Group 2 (n = 74) consisted of the patients operated without use of an intraluminal shunt. Postoperative neurologic complications were recorded. Results : Temporary neurologic impairment developed in 3 (4.3%) patients postoperatively in group 1 and in 2 (2.7%) patients postoperatively in group 2. This difference was not statistically significant between groups (p = 0.675). None of the patients returned to operation theatre due to excessive bleeding postoperatively. The stroke/death rate was 0.7% in the study group. Conclusions : We conclude that carotid endarterectomy in symptomatic patients with contralateral occlusion can be performed safely without the systematic use of a shunt. However, it is not possible to define exact indications for use of a shunt as we have no information on the reason why some surgeons used a shunt.Öğe Late manifestation of a pseudoaneurysm in the descending thoracic aorta(Verlag Hans Huber, 2006) Gurkan, S.; Sunar, H.; Canbaz, S.; Duran, E.Rupture of the descending aorta following deceleration trauma is a catastrophic event because it has a high mortality. Prompt surgical treatment is generally considered to be mandatory. However, a few injured patients may leave the hospital with an undiagnosed aortic rupture which may give rise to a chronic pseudoaneurysm. In this report, a 28-year-old man is presented in whom a pseudoaneurysm, of the descending thoracic aortic was diagnosed six months after a car accident.Öğe The reoperations that performed for bleeding after open heart surgery(John Wiley & Sons Ltd, 2010) Huseyin, S.; Gurkan, S.; Canbaz, S.; Ege, T.; Arslan, K.; Dikmengil, M.; Duran, E.[Abstract Not Available]Öğe The Role of Inflammation in Atrial Fibrillation following Open Heart Surgery(Sage Publications Ltd, 2008) Canbaz, S.; Erbas, H.; Huseyin, S.; Duran, E.This study investigated the role of systemic inflammation in the development of atrial fibrillation (AF) after coronary artery bypass grafting (CABG). CABG was performed using cardiopulmonary bypass in 77 patients. Pre-operative AF was present in six patients (7.8%) and postoperative AF developed in 13 (18.3%) of the 71 patients with pre-operative sinus rhythm. Post-operative mediastinal drainage was significantly increased in patients with post-operative AF compared with those with sinus rhythm. Plasma E-selectin, P-selectin and vascular cell adhesion molecule levels were not significantly different between patients with pre- and post-operative sinus rhythm, those with pre-operative sinus rhythm and post-operative AF, and those with pre- and post-operative AF. There were significant differences between pre- and post-operative C-reactive protein, interleukin (IL)-6 and IL-10 levels within all three groups, but no differences in these parameters between the groups. Thus, in all groups there were significant alterations in mediators indicative of systemic inflammation following CABG, but comparisons between the groups revealed no differences predictive of AF.Öğe A splenic injury due to ruptured abdominal aortic aneurysm(Edizioni Minerva Medica, 2007) Gur, O.; Canbaz, S.; Halici, U.; Duran, E.[Abstract Not Available]Öğe Surgical management of iatrogenic femoral artery pseudoaneurysms: A 10-year experience(Lithographia, 2013) Huseyin, S.; Yuksel, V; Sivri, N.; Gur, O.; Gurkan, S.; Canbaz, S.; Ege, T.Background: Vascular complications of cardiac catheterization have increased in line with increasing number of percutaneous interventions. Open repair is the standard method of treatment for true and false aneurysms of femoral artery. We report results of patients operated due to femoral artery pseudoaneurysm after cardiac catheterization. Methods: Data from 12,261 patients who underwent percutaneous intervention for cardiac catheterization between January 2003 and January 2013 were evaluated. Diagnosis of pseudoaneurysm was established mainly by doppler ultrasonography in patients with complaints of pain and hematoma at the intervention site. Pseudoaneurysms less than 2 cm in diameter were treated non-operatively and were followed up by regular ultrasonographic examination at the outpatient clinic. Pseudoaneurysms with a diameter of 2 cm or more underwent primary repair. All patients were followed up for one year. Results: We detected 55 (0.44%) patients with femoral artery pseudoaneurysm and 42 of them were operated. The mean age was 60.7 +/- 6.3 years. Thirty nine (94.5%) patients underwent elective surgery, three (5.5%) patients were operated on under emergency conditions. Operation was performed under local anesthesia in 32 patients, under local anesthesia and sedation in eight patients, and under general anesthesia in three patients. Location of the pseudoaneurysm was the superficial femoral artery in 29 (69%), the common femoral artery in nine (21.4%), and the deep femoral artery in four (9.6%) patients. No limb loss occurred, no patient died and no recurrence was detected during the follow up. Conclusions: Performing vascular reconstruction before the rupture of pseudoaneurysm is important in terms of morbidity and mortality. We concluded that surgical repair in pseudoaneurysms larger than 20 mm is safe and essential.Öğe SURGICAL TREATMENT OF AORTOILIAC OCCLUSIVE DISEASE IN PATIENTS WITH CHRONIC OBSTRUCTIVE PULMONARY DISEASE UNDER EPIDURAL ANAESTHESIA(Carbone Editore, 2014) Yuksel, Volkan; Sagiroglu, Gonul; Huseyin, Serhat; Gultekin, Ahmet; Canbaz, S.; Ege, Turan; Sunar, H.Aim: The morbidity and mortality rates for peripheral arterial surgery have Unproved with the developments in vascular surgery and anaesthesiology. We aimed to report our experience with epidural anaesthesia for surgical treatment of aortoiliac occlusive peripheral arterial disease. Materials and methods: Between January 2012 and July 2013, 7 patients with severe chronic obstructive pulmonary disease operated for peripheral arterial disease were included in the study. The epidural catheter Was performed in the operating theatre on the day of surgery. Analgesie effectivity was controlled by visual analogue scale: Mean arterial pressure, heart rate and SpO2 were measured: Retroperitoneal approach was preferred in all patients. Results: Patients were all male and mean age was 58 years. The mean stay in the intensive care unit was 21 hours. The mean length of stay in the hospital postoperatively wasp days. No complication was observed related to the epidural anaesthesia. In the postoperative follow up, two patients developed wound infection at the groin incision. They healed uneventfully with proper antibiotic treatment. Conclusion: In conclusion, patients with severe chronic obstructive pulmonary disease Can be encouraged for elective aortofemoral bypass operation under epidural anaesthesia with acceptable Morbidity.