Coronary Artery Catheterization in the Intact Dog

A technic is described for selective catheterization of individual coronary arterial branches in intact dogs by means of special catheters which permit intracoronary injections of pharmacologic agents or radio-opaque materials. All the main coronary arteries (right, left anterior descending, left circumflex) have been successfully catheterized and injected, both alone and in combination.