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    A case of coronary artery fistula with mitral stenosis
    (KLUWER ACADEMIC PUBL, 2003) Gunduz, H; Akdemir, R; Binak, E; Ayarcan, Y; Kurtoglu, N; Uyan, C
    Coronary artery fistulae, being a rare form of congenital anomalies of the coronary arteries, are usually discovered by chance during coronary arteriography. However, these fistulae can cause an important coronary morbidity and mortality leading to angina, syncope, congestive heart failure, myocardial infarction and sudden death. The coincidence of mitral stenosis and congenital artery fistula is rare in the literature. In our case report, a patient with a coronary artery fistula originating from the circumflex, draining to the main pulmonary artery, discovered at cardiac catheterization and coronary angiography done with a prediagnosis of mitral stenosis is presented in the light of the literature.
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    Prediction of viability by pulsed wave Doppler tissue sampling of asynergic myocardium during low dose dobutamine challenge
    (W B SAUNDERS CO LTD, 2000) Altinmakas, S; Dagdeviren, B; Uyan, C; Keser, N; Bulut, S; Pektas, O
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    Prediction of viability by pulsed-wave Doppler tissue sampling of asynergic myocardium during low-dose dobutamine challenge
    (ELSEVIER SCI IRELAND LTD, 2000) Altinmakas, S; Dagdeviren, B; Uyan, C; Keser, N; Gumus, V; Pektas, O
    Dobutamine stress echocardiography is widely used to predict reversible left ventricular dysfunction, but evaluation with this method is subjective. Pulsed-wave tissue Doppler imaging is a new technique that allows to obtain quantitative data on wall motion velocities of different myocardial segments through sample-volume placement. Therefore, this tool in combination with DSE may be suitable for identifying viability in asynergic myocardium. To evaluate this, in 40 patients (mean age 57+/-9) with resting dyssynergy (akinesis in 52, hypokinesis in 30) baseline wall motion scores and tissue Doppler variables were collected before and after 5 min infusion of 10 mu g/kg per min dobutamine. Forty-six of 82 segments were classified as viable (a reduction in segmental score of at least one grade) according to follow-up echocardiography that was performed 4 weeks after revascularization. While myocardial S velocity percent increase in viable segments was 45+/-10, the increase was 25+/-12 in necrotic segments (n=36) during 10 mu g dobutamine infusion (P=0.0001). Assuming 35% as a cut-off for viability the increase in S velocities by DSE yielded an 89% sensitivity and 86% specificity for predicting post-revascularization functional recovery. In conclusion, pulsed-wave tissue Doppler imaging of asynergic myocardium during dobutamine stress echocardiography can identify the viability quantitatively. (C) 2000 Elsevier Science Ireland Ltd. All nights reserved.
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    Spontaneous rupture of a coronary artery aneurysm - A case report and review of the literature
    (JAPAN HEART JOURNAL, SECOND DEPT OF INTERNAL MED, 2004) Gunduz, H; Akdemir, R; Binak, E; Tamer, A; Uyan, C
    Coronary artery aneurysm (CAA) is. a rare disorder, characterized by abnormal dilatation of a localized portion or diffuse segments of the coronary artery. CAA may cause angina, myocardial infarction, sudden death due to thrombosis, embolisation, or rupture. In this report, a 63 year old Turkish male patient is presented who had an acute non-Q wave myocardial infarction due to spontaneous rupture of the left circumflex artery aneurysm. An extremely rare clinical presentation of rupture of a left circumflex CAA is discussed.