Abdurrahman Oğuzhan

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BACKGROUND Although myocardial ischemia is known to be significantly related to the development of coronary collateral vessels (CCVs), there is considerable variation between patients with ischemic heart disease in the presence of collateral development. The nature of this variability is not well known. Likewise, it remains unclear whether diabetes mellitus(More)
OBJECTIVES The aim of this study was to determine the protective effect of carvedilol in anthracycline (ANT)-induced cardiomyopathy (CMP). BACKGROUND Despite its broad effectiveness, ANT therapy is associated with ANT-induced CMP. Recent animal studies and experimental observations showed that carvedilol prevented development of CMP due to(More)
Doppler tissue imaging (DTI) has been proposed as a tool for the evaluation of diastolic function. Controversy exists regarding whether DTI measurements are influenced by preload. Changes in the circulating volume associated with hemodialysis result in preload reduction. To determine the influence of preload reduction on DTI and standard pulsed-Doppler(More)
Hematologic parameters have prognostic importance in cardiovascular disease. However, the relation between atherosclerosis progression and hematologic parameters is not well defined. A total of 394 patients requiring repeat coronary angiography were included in the study. According to angiography, patients were divided into 2 groups, progressive (n = 196)(More)
BACKGROUND The potential factors that introduce variability into TIMI frame count (TFC) have not been systematically investigated. The goal of this study was to determine if nitrate use, dye injection rate, catheter size, the phase of the cardiac cycle in which dye is injected, or heart rate affect the TFC and to investigate the reproducibility of the TFC.(More)
OBJECTIVES Endothelial dysfunction is a well known risk factor for atherosclerosis. Uric acid levels are associated with endothelial dysfunction and atherosclerosis even if in physiological range. Xanthine oxidase inhibition with allopurinol decreases uric acid levels and oxidative stress and improves endothelial function. We have investigated the effect of(More)
Carbon monoxide (CO) poisoning is an important health problem. Cardiac abnormalities may occur in patients with CO poisoning; however, the severity and duration of cardiac abnormalities are not well known. In this study, cardiac structures and function in CO poisoning were evaluated prospectively. Twenty patients were enrolled in the study.(More)
Aortic dissection (AD) is a disease characterized by tear of the aortic intimal layer and separation of the arterial wall. Some risk factor such as hypertension and Marfan syndrome is well known in AD. However, the role of genetic factors in AD is largely unknown. Insertion/deletion (I/D) polymorphism of the angiotensin-converting enzyme (ACE) gene is(More)
Mean platelet volume (MPV) is an indicator of platelet activation. We investigated the acute effect of passive smoking on MPV in healthy volunteers. Healthy nonsmoker volunteers (n = 90) spent 120 minutes in a smoke-free room. Then they were exposed to passive smoking in 3 groups consisting of 30 volunteers each in group A (carbon monoxide [CO] < 7.5 ppm),(More)
BACKGROUND B-type natriuretic peptide (BNP) is secreted from the ventricles in response to volume expansion and pressure overload. We aimed to investigate plasma BNP levels in inferior myocardial infarction (MI) with and without right ventricular MI (RVMI). METHODS We enrolled 49 patients (mean age: 60+/-10 years, 45 males) who were admitted with first(More)