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Eur J Cardiothorac Surg 2001;20:908-912
© 2001 Elsevier Science NL

Multivessel off-pump coronary artery bypass surgery in the elderly

Department of Surgery, Montreal Heart Institute, Research Center, 5000 Bélanger Street East, Montreal, Quebec, Canada, H1T 1C8

Received 5 June 2001; received in revised form 23 July 2001; accepted 17 August 2001.

Corresponding author. Tel: +1-514-376-3330, ext. 3715; fax: +1-514-376-1355
e-mail: rc2910{at}aol.com

Objective: Coronary artery bypass grafting in the elderly patient is associated with increased perioperative morbidity and mortality. The avoidance of cardiopulmonary bypass (CPB) in this population is potentially beneficial. We examined our initial experience with off-pump multivessel coronary artery revascularization in patients aged 70 years and older. Methods: In a consecutive series of 300 off-pump coronary artery bypass (OPCAB) operations performed by a single surgeon between 1996 and 1999, 98 patients were aged 70 years and older. These patients were compared with a consecutive cohort of 497 patients aged 70 years and older operated on with CPB in the same institution from 1995 to 1996, period where OPCAB surgery was not performed in our institution. Results: Patients in the beating heart group were older (75±4 vs. 74±3 years; P=0.001). Gender distribution and other preoperative risk factors were comparable for the two groups. On average, 3.0±0.8 and 2.8±0.7 grafts per patient were completed in the OPCAB and the CPB groups, respectively (P=0.007). Perioperative mortality rates (OPCAB group, 3.1%; CPB group, 3.6%), perioperative myocardial infarction (OPCAB, 2.0%; CPB, 5.1%) and neurologic events (OPCAB, 1.0%; CPB, 3.2%) were comparable for the two groups. The incidence of postoperative atrial fibrillation was lower in the OPCAB group (42 vs. 54%; P=0.05). The need for allogenic blood transfusions was significantly less in the OPCAB group (53 vs. 82%; P=0.001). Conclusions: In patients aged 70 years and older, multivessel OPCAB surgery is associated with lower rates of postoperative atrial fibrillation and reduced transfusion requirements. Multivessel OPCAB in the elderly patient is an acceptable alternative to procedures performed with CPB.

Key Words: Off-pump coronary artery bypass • Elderly • Coronary surgery

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