Under certain conditions, a progressive increase in vascular resistance occurs within ischemic myocardium during the first 3 hours after coronary artery stenosis. We tested the hypothesis that the increased resistance is due to local release of a vasoconstrictor substance in the ischemic region. Relative ischemia was produced in anesthetized dogs by a combination of acute coronary arterial sten...

The purpose of this study was to determine the coronary angiographic correlations (specifically disease of the left anterior descending coronary artery) of reciprocal ST segment depression appearing during inferior acute myocardial infarction. Forty six patients (41 men and five women; mean age 56 years) were allocated into two groups based on the extent of precordial ST segment depression: wid...

Under certain conditions, a progressive increase in vascular resistance occurs within ischemic myocardium during the first 3 hours after coronary artery stenosis. We tested the hypothesis that the increased resistance is due to local release of a vasoconstrictor substance in the ischemic region. Relative ischemia was produced in anesthetized dogs by a combination of acute coronary arterial sten...

We report the case of a patient with dextrocardia and situs inversus totalis associated with obstructive coronariopathy in the anterior and posterior descending arteries, right coronary artery, first diagonal branch and left marginal branch. The patient underwent coronary artery bypass grafting surgery. This surgery has been rarely reported in literature and we found only one similar case in th...

Coronary artery aneurysms (CAAs) are rare and their management is controversial. Their incidence varies from 1,5% to 5% of the coronary angiographies, with predilection of the right coronary artery. Unruptured coronary aneurysms are often silent and may remain undiagnosed. The etiology can be either congenital or acquired. We describe a case of a left anterior descending artery (LAD) aneurysm t...

We report the case of a rare anomaly of the right coronary artery originated from the middle third of the left anterior descending (LAD) coronary artery with a proximal atheromatous obstructive lesion immediately before the emergence of the right coronary artery (RCA). The patient underwent successful angioplasty with stent implantation in the left anterior descending coronary artery. Only 7 ca...