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On-Pump Versus Off-Pump Coronary Artery Bypass Using Quadruple Arterial Grafts

Department of Cardiovascular Surgery Kobari General Hospital Noda City, Chiba, Japan 1 Department of Cardiovascular Surgery Shin-Tokyo Hospital Matsudo City, Chiba, Japan
Hitoshi Hirose, MD Tel: 81 471 24 6666 Fax: 81 471 24 6764 email: genex{at}nifty.com Department of Cardiovascular Surgery, Kobari General Hospital, 29-1 Yokouchi, Noda City, Chiba 278-8501, Japan.

The optimal combination of arterial grafts for quadruple coronary artery bypass is the bilateral internal mammary artery, the radial artery, and the gastroepiploic artery. Patients who underwent quadruple bypass in our hospital group between December 1995 and March 2001 were retrospectively analyzed to determine whether off-pump surgery (n = 27) provides better outcomes than conventional on-pump surgery (n = 51). Preoperative risk factors as well as the mean number of distal anastomoses (4.5 in the off-pump versus 4.8 in the on-pump patients) were not significantly different between the 2 groups. Postoperative recovery was significantly faster in the off-pump group than in the on-pump group (intubation time, 6.4 versus 16 hours; stay in intensive care unit, 2 versus 3 days; and postoperative hospital stay, 12.3 versus 15.8 days). Early stenosis-free graft patency rates did not differ significantly (90.3% versus 89.3%). No late cardiac events were observed in the off-pump group, while 4 occurred in the on-pump group. Quadruple arterial bypass without cardiopulmonary bypass is safe, and it allows faster recovery. The follow-up results of off-pump patients so far have been satisfactory.

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