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Abstract

ABSTRACT: BACKGROUND: Occasionally, coronary arteries without significant stenosis are observed during invasive treatment of acute coronary syndrome (ACS). OBJECTIVE: The aim was to study the frequency and to determine the most predictive factors of Troponin positive ACS without significant Stenosis on angiography. METHODS: The study involved one hundred twenty four patients admitted with Troponin positive ACS who underwent cardiac catheterization during hospitalization. The primary end-point was the estimation of coronary arteries without significant stenosis, and the secondary end-point was analysis of the most predisposing factors. In evaluating the primary end-point, the patients were divided into two groups according to the presence of ST elevation myocardial infarction (STEMI) or not. Also the patient who has no significant coronary artery Stenosis (< 50%) was subdivided to two groups: a- Myocardial Infarction with No critical lesion in Coronary angiogram (MINC) b- Normal coronary angiogram RESULTS: Overall, 20 patients (16%) had coronary arteries without significant lesions, from which 8 patients (6.4%) had MINC and 12 patients (9.6%) had normal coronary angiogram. The predictors were: female sex (P=0.008), age

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