Person: SARI, İBRAHİM
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SARI
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İBRAHİM
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Publication Metadata only Effect of acute sleep deprivation on left atrial mechanics assessed by three-dimensional echocardiography(SPRINGER HEIDELBERG, 2016) ÇİNÇİN, AHMET ALTUĞ; Cincin, Altug; Sari, Ibrahim; Sunbul, Murat; Kepez, Alper; Oguz, Mustafa; Sert, Sena; Sahin, Anil; Ozben, Beste; Tigen, Kursat; Basaran, YeldaAlthough sleep deprivation (SD) affects cardiovascular system in many ways, physio-pathological changes in cardiac chamber volume and function have not been described well. The aim of the present study was to investigate the effect of SD on left atrial (LA) and ventricular function with three-dimensional (3D) echocardiography. Thirty-two healthy individuals (12 females, mean age 33.25 +/- 8.18) were evaluated. Echocardiographic examination was performed once after a night of regular sleep and a night of sleep debt. Beside conventional parameters, 3D phasic volumes and function were measured using a commercially available 3D echocardiography system and offline analysis software. Mean sleep duration of the study group was 8.15 +/- 2.19 h in the day of regular sleep and 2.56 +/- 2.25 h in the day of sleep deprivation. There was a significant prolongation in deceleration time (180.83 +/- 15.34 vs. 166.44 +/- 26.12; p = 0.044) and increase in E/e' (6.95 +/- 1.26 vs. 6.38 +/- 0.85; p = 0.005). Among 3D measurements, the difference in left ventricular ejection fraction (EF), LA EF, LA reservoir function and LA active EF were not significant. Mean LA passive EF of the individuals was significantly lower after night shift (24.10 +/- 7.66 vs. 31.49 +/- 7.75; p = 0.006). Acute SD is associated with a reduction in LA passive emptying function in healthy adults. 3D-derived indices were sufficient to show subclinical diastolic dysfunction according to impairment in passive phase of LA ejection. Prospective large-scale studies are needed to enlighten this issue.Publication Metadata only Postoperative Atrial Fibrillation after Coronary Artery Bypass Grafting Surgery: A Two-dimensional Speckle Tracking Echocardiography Study(ELSEVIER SCIENCE INC, 2016) ÖZBEN SADIÇ, BESTE; Ozben, Beste; Akaslan, Dursun; Sunbul, Murat; Filinte, Deniz; Ak, Koray; Sari, Ibrahim; Tigen, Kursat; Basaran, YeldaBackground Postoperative atrial fibrillation (POAF) may develop after coronary artery bypass grafting (CABG). The aim of the study was to explore the relationship between preoperative left atrial function and atrial fibrosis and POAF after CABG. Methods Forty-eight consecutive patients undergoing CABG (mean age: 61.6 +/- 8.9 years, 39 male) were included. All patients were in sinus rhythm during surgery. Patients were followed by continuous electrocardiography monitoring and daily electrocardiogram. Left atrial function was assessed by both conventional and speckle tracking echocardiography. Atrial fibrosis was determined by samples taken from right atrium. Results Postoperative atrial fibrillation was detected in 13 patients. Female sex and number of bypassed vessels were significantly higher and cardiopulmonary bypass time was significantly longer in patients with POAF. Left atrial volume index (LAVI) was significantly higher while left atrial reservoir strain was significantly lower in POAF patients. The percentage of patients with severe fibrosis was higher in the POAF group. Regression analysis revealed fibrosis and LAVI as independent predictors of POAF. Left atrial volume index >= 36 mL/m(2) predicted POAF with a sensitivity of 84.6% and specificity of 68.6% in our cohort. Conclusion Patients who developed POAF after CABG had more fibrosis, increased LAVI and lower left atrial reservoir strain. Preoperative echocardiography might be helpful in discriminating these patients.