Effect of aortocoronary bypass surgery on coronary circulation and myocardial metabolism during atrial pacing |
| |
| Authors: | Seizoh Nakata M.D. Hiromasa Yokota Kazuhisa Kodama Shinsuke Nanto Hajime Hirose Yasunaru Kawashima |
| |
| Affiliation: | (1) Cardiovascular Surgery, Osaka Police Hospital, Japan;(2) Cardiac Center, Osaka Police Hospital, Japan;(3) First Department of Surgery, Osaka University School of Medicine, 553 Osaka, Japan;(4) First Department of Surgery, Osaka University School of Medicine, 1-1-50 Fukushima, Fukushima-ku, 553 Osaka, Japan |
| |
| Abstract: | Summary Eleven patients with coronary heart disease, in whom at least one of several bypass grafts to the left coronary artery was patent, were selected for the study. The hemodynamics, coronary sinus blood flow, myocardial oxygen consumption, and myocardial lactate metabolism were evaluated at rest and during atrial pacing stress test before and after surgery.There were no significant improvements in the cardiac index, pulmonary arterial end-diastolic pressure, and left ventricular ejection fraction after aortocoronary bypass surgery. However, significant improvement of coronary sinus blood flow, myocardial oxygen consumption, and myocardial lactate extraction and consumption were found during postoperative atrial pacing compared with the preoperative findings.These results suggest that successful bypass grafting may improve myocardial lactate metabolism in ischemic lesions and contribute to the postoperative relief of angina. |
| |
| Keywords: | Aortocoronary bypass surgery Atrial pacing stress Coronary sinus flow Myocardial oxygen consumption Myocardial lactate metabolism |
| 本文献已被 SpringerLink 等数据库收录！ |
|
