Selective coronary angiography in patients with conduction disturbances of the heart.

Selective coronary angiography and left ventriculography was performed in 14 patients with conduction disturbances of the heart or chronic complete heart block. Occlusive coronary arterial diseas was present in 3 patients: 2 of these had had extensive previous myocardial infarction and 1 complained of angina pectoris. The other patients gave no history of coronary artery disease and conduction abnormalities were the consequence of idiopathic fibrosis of the conducting system. The coronary arteries were normal or dilated and were remarkably free of atheroma in this group of older patients. Left ventricular function, as measured by ejection fraction, was normal except in the 2 patients who had had previous myocardial infarction.