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Biomedical subjects

Cemil Gürgün

Publications and source records attributed to Cemil Gürgün.

10 recordsLinked to original sources
PubMed2005

A giant inferoposterior true aneurysm of the left ventricle mimicking a pseudoaneurysm.

A left ventricular aneurysm (LVA) is most commonly the result of myocardial infarction, usually involving the anterior wall. A left ventricular pseudoaneurysm (LVPSA) or false aneurysm forms when cardiac rupture is contained by adherent pericardium or scar tissue. The accurate diagnosis, although difficult to establish, is an important one to make because these aneurysms are prone to rupture. In this article, we report a challenging case of a cardiac aneurysm a year after a coronary bypass operation which could not be definitively diagnosed despite of imaging with different techniques including echocardiography, coronary angiography, left ventriculography and magnetic resonance imaging (MRI). The patient underwent a second cardiac surgery, the aneurysm was resected, the mitral valve was replaced and the defect in the ventricular wall was repaired. Because of the combined diagnostic capabilities like detailed and functional pathoanatomy and aneurysmal wall characterization, MRI seems to have multiple advantages in differential diagnosis.

Aged↗
PubMed2005

Endothelial function in patients with vasculogenic erectile dysfunction.

OBJECTIVES: Erectile dysfunction (ED) commonly coexists with coronary artery disease (CAD) and/or risk factors for atherosclerosis. Because the silent or documented atherosclerosis or vascular risk factors are very frequent, the possibility of endothelial dysfunction in ED patients is expected to be increased. Our aim was to evaluate the endothelial functions in patients with vasculogenic ED with vascular risk factors and compare them with age-matched non-ED patients or healthy controls. DESIGN: We studied 36 patients with presumed vasculogenic ED, 39 age-matched patients with similar risk factors without ED and 25 age-matched healthy controls without ED, known cardiovascular disease or risk factors. Erectile function was evaluated by the International Index of Erectile Dysfunction (IIEF) scores. Brachial artery flow-mediated dilatation (FMD) and nitroglycerine-mediated dilatation (NMD) were measured. RESULTS: Baseline demographics were similar except the IIEF score and duration of diabetes in patients with ED. Brachial artery FMD and NMD were significantly reduced in patients with ED (3.2+/-3. vs. 6+/-4, p<0.0001 for FMD, 12.2+/-6 vs. 15.4+/-6 p=0.032 for NMD). In patients with similar risk factors but without ED, FMD was significantly lower but NMD were not different compared with healthy controls (6+/-4 vs. 10.2+/-3, p<0.0001 for FMD and 15.4+/-8 vs. 16.4+/-6, p=0.81). IIEF scores were weakly correlated with FMD (r=0.25, p=0.028) in patients with ED. There were significant correlations between FMD and NMD in patients with ED (r=0.46, p=0.05) and with risk factors (r=0.72, p<0.0001) but not in healthy controls (r=0.54, p=0.792). Vasculogenic ED patients have more markedly impaired endothelial and smooth muscle functions compared with patients with similar risk factors but no ED.

Arteriosclerosis↗
PubMed2004

[The relationship between serum C-reactive protein levels and coronary artery disease in patients with stable angina pectoris and positive exercise stress test].

OBJECTIVE: In this study we aimed to investigate whether serum C- reactive protein (CRP) levels are related with the incidence of coronary artery disease (CAD) and selection of management approaches in stable angina pectoris (SAP). METHODS: Overall 134 patients (pts) with SAP and positive exercise stress test were investigated. All pts were divided into two groups according to the baseline levels of CRP. In group 1 (mean age 57.8+/-10.3 years) there were 41 pts with the level of CRP >0.50mg/dl (high levels of CRP) and group 2 consisted of 93 pts (mean age 56.0+/-11.7 years) with the CRP levels <0.50mg/dl (normal levels of CRP). We investigated the relationship between CRP levels with coronary artery disease and treatment strategies. RESULTS: There were no significant differences in age, sex, hypertension and hyperlipidemia between groups. In group 1 (n=41) 36 pts, and in group 2 (n=93) 58 pts had CAD (p= 0.004). We found statistically significant relationship between high levels of CRP and smoking and diabetes mellitus. After adjustment of these risk factors by multivariate regression analyses the CRP association with CAD become attenuated but was still statistically significant (p=0.03). CONCLUSION: In this study we found that high level CRP is an independent strong marker of CAD in middle-aged patients with stable angina and positive treadmill exercise test. There was no correlation between CRP levels and interventional procedures.

Adult↗
PubMed2003

The angiographic correlation between ST segment depression in noninfarcted leads and the extent of coronary artery disease in patients with acute inferior myocardial infarction: a clue for multivessel disease.

BACKGROUND: Although reciprocal ST segment depression (RSTD) in patients with acute inferior myocardial infarction is a common electrocardiogram finding, its significance is not yet established. In this prospective study, the relationship between RSTD and the extent of coronary artery disease (CAD) was investigated. PATIENTS AND METHODS: One hundred eighty-eight patients with acute inferior myocardial infarction who received thrombolytic therapy were enrolled in this study. The magnitude and location of ST segment depression in noninfarcted leads and the maximum ST segment elevation (STEmax) in inferior leads were measured. All patients were divided into two main groups according to the presence of RSTD and five subgroups according to the location of RSTD, the maximum RSTD and the STEmax. The coronary angiography was performed in all patients 28 +/- 4 days after acute myocardial infarction. RESULTS: There were no significant differences in the proportion of coronary disease risk factors in patients with, versus those without, RSTD (P=0.6). Multivessel CAD was present in 63 of the 108 (58%) patients with RSTD and in 32 of the 80 (40%) patients with no RSTD (P=0.02). According to the location of reciprocal changes, multivessel disease was present in significantly more patients with anterior RSTD concomitant with or without lateral ST segment depression (P=0.01 and P=0.03, respectively); the proportion of single vessel disease was greater in patients with only lateral RSTD (P=0.02). In addition, the presence of anterior RSTD to a greater magnitude than the STEmax in inferior myocardial infarction increases the likelihood of multivessel disease (P=0.006). CONCLUSIONS: The presence of RSTD during an acute inferior myocardial infarction correlates with the presence of multivessel CAD and may not be only an electrical phenomenon.

Analysis of Variance↗
PubMed2002

QT dispersion in patients with different etiologies of left ventricular hypertrophy: the significance of QT dispersion in endurance athletes.

Left ventricular hypertrophy (LVH) increases the risk of ventricular arrhythmias and sudden death and has a significant effect on total cardiovascular mortality. QT dispersion (QTd) is a measure of inhomogeneous repolarization and is used as an indicator of arrhythmogenicity. In this study we detected QTd in patients with different etiologies of left ventricular hypertrophy and the effect of LVH in QTd on endurance athletes. The study group consisted of 147 white male subjects with 3 different etiologies of LVH and 30 healthy male individuals. The underlying etiologies of LVH were essential hypertension, valvular aortic stenosis and long-term training (athletic heart). QTd was measured by surface electrocardiogram and Bazett's formula was used to correct QTd for heart rate (QTcd). Left ventricular mass was determined by transthoracic echocardiography and left ventricular mass index was calculated in relation to body surface area. The QTcd was significantly higher in patients with pathological LVH (due to hypertension and aortic stenosis) than in the athletes' group (physiological LVH) and healthy subjects (P<0.05). The magnitude of QTcd was similar between athletes and the control group (P=0.6). The difference of QTcd between the groups with pathological LVH was not statistically significant (P=0.1). In conclusion; the increasing of QT dispersion is associated with only pathological conditions of LVH. The left ventricular hypertrophy has not a negative effect in QT dispersion on endurance athletes. The measurement of QT dispersion may be a non-invasive useful method for screening additional pathological conditions in endurance athletes.

Adult↗
PubMed2002

Cardiovascular involvement in Behçet's disease.

The incidence and nature of cardiac involvement in Behçet's disease are not yet clearly documented. We first used transesophageal echocardiography in combination with resting and signal averaged electrocardiography to define cardiac involvement in Behçet's patients. Transthoracic and multiplane transesophageal echocardiography, and resting and signal averaged electrocardiography were performed in 35 Behçet's disease patients (9 women and 26 men, mean age: 38 +/- 12 years) and 30 normal subjects. Higher incidences of interatrial septum aneurysm (31% to 6%), mitral valve prolapse (25% to 3%), mitral regurgitation (40% to 6%) and aneurysmal dilatations of sinus valsalva and ascendan aorta were observed in the Behçet's disease patients than in the normal subjects. Mean QT dispersion and mean corrected QT dispersion values were significantly greater in the patients with Behçet's disease. Patients with interatrial septum aneurysm (and/or PFO), valvular dysfunction or proximal aorta dilatation had greater QT dispersion values than thase without these pathologies in the Behçet's group (63 +/- 11 vs 44 +/- 19 ms, 58 +/- 23 vs 41 +/- 24 and 60 +/- 27 vs 42 +/- 23 ms respectively, P<0.05). Positive signal averaged electrocardiography parameters were detected in 18 (51%) Behçet's disease patients compared with one (3%) in controls (P<0.001). Dilatation of the proximal aorta, interatrial septal aneurysm, mitral valve prolapse, and mitral regurgitation are the common findings of cardiac involvement in Behçet's disease. Increased dispersion of ventricular repolarisation and positive late potentials are also detected. QT dispersion is significantly higher in patients with these cardiac abnormalities. These findings suggest that cardiac involvement in this disorder is a diffuse process which involves both cardiac structure and vascular elements.

Adult↗