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Ann Thorac Surg 1999;68:94-99
© 1999 The Society of Thoracic Surgeons
a Department of Surgery, Montreal Heart Institute, Montreal, Quebec, Canada
b Department of Anesthesia, Montreal Heart Institute, Montreal, Quebec, Canada
Address reprint requests to Dr Cartier, Research Center, Montreal Heart Institute, 5000 Belanger St East, Montreal, PQ, H1T 1C8, Canada;
e-mail: cartierr{at}icm.umontreal.ca
Background. Beating heart surgery is a technique currently used for revascularization of the anterior and inferior territory. However, revascularization of the circumflex artery is more problematic. With a specific apparatus and surgical technique, we have extended the use of beating heart surgery to more than 90% of patients with multivessel disease, including those necessitating circumflex artery revascularization.
Methods. Between October 1996 and November 1997, 140 patients underwent beating heart surgery by the same surgeon (R.C.). Among these patients, 111 required reconstruction of the circumflex artery territory and were followed up prospectively. They represent the cohort of patients presented in this study. There were 90 men and 21 women averaging 64 ± 9.9 years of age. Mean left ventricular ejection fraction was 55% ± 13.7%, and a significant left main coronary artery disease was present in 27% of the patients. Five patients had prior coronary revascularization.
Results. An average of 3.1 ± 0.1 grafts/patient were performed. Complete revascularization was achieved in 95%. Only 1 patient needed conversion to cardiopulmonary bypass because of spontaneous ascending aortic dissection. Perioperative and postoperative bleeding were 446 ± 245 mL and 644 ± 442 mL, respectively. Homologous transfusions were required in 40% of the patients. Myocardial infarction occurred in 2.7% and operative mortality in 0.7% (1 patient). Average hospital stay was 6.6 ± 3.1 days, and no patient exhibited early recurrence of angina. Early coronary angiograms (first 8 patients) demonstrated a 100% patency with 95% freedom from significant stenosis.
Conclusions. Complete coronary artery revascularization is feasible on the beating heart without the assistance of cardiopulmonary bypass with a low morbidity and mortality and excellent early angiographic results. Long-term follow-ups are needed to substantiate the potential long-term benefits of this technique.
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