Creatine kinase and creatine kinase subunit-B in coronary sinus blood in pacing-induced angina pectoris.

In nine out of 10 patients with angiographic documented coronary artery disease, pacing-induced angina pectoris provoked myocardial production of lactate, whereas no significant release of either creatine kinase or creatine kinase subunit-B to coronary sinus and peripheral venous blood could be detected.