Selective coronary angiography in primary myocardial disease.

Coronary angiography was performed in i6 patients with a primary myocardial disease, Bantu cardiomyopathy. Two patients had discrete coronary occlusion, presumed embolic from ventricular mural thrombus. There was no evidence of coronary atheroma and all the vessels and their proximal intramural branches were large. The total cross-sectional area of the proximal coronary arteries correlated with left ventricular muscle mass. The coronary angiograms were also used to study left ventricular function.