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Asian Cardiovasc Thorac Ann 2003;11:23-27
© 2003 Asia Publishing EXchange Ltd

ORIGINAL CONTRIBUTIONS

Coronary Artery Bypass Grafting for Patients With Poor Left Ventricular Function

Hitoshi Hirose, MD, Atsushi Amano, MD1, Syuichirou Takanashi, MD2, Akihito Takahashi, MD2

Department of Cardiovascular Surgery, Kobari General Hospital, Chiba, Japan
1 Department of Cardiovascular Surgery, Showa University Northern Yokohama Hospital, Kanagawa, Japan
2 Department of Cardiovascular Surgery, Shin-Tokyo Hospital, Chiba, Japan

For reprint information contact: Hitoshi Hirose, MD Tel: 1 216 707 9445 Fax: 1 216 707 9446 email: genex{at}nifty.com Thoracic and Cardiovascular Surgery, Cleveland Clinic Foundation, F25, 9500 Euclid Avenue, Cleveland, OH 44195, USA.

Patients undergoing isolated first-time elective coronary bypass surgery were classified according to their preoperative ejection fraction: group 1 comprised 131 patients with poor left ventricular function (ejection fraction < 40%); group 2 was 1,496 control patients. The mean number of distal anastomoses was not significantly different in the 2 groups, however, clamp time, pump time, and operative time were longer in group 1. Patient recovery was significantly slower in group 1. Morbidity (14.5% in group 1 versus 7.4% in group 2, p < 0.005) and mortality (2.3% versus 0.1%, p < 0.0001) were higher in group 1. During late follow-up, the 5-year survival rate (70.1% versus 90.5%) and 5-year event-free rate (65.6% versus 81.9%) were significantly inferior in group 1 compared to group 2. The results of bypass surgery in cases of decreased left ventricular function were poor, and such patients need to be carefully followed up.






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