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Ann Thorac Surg 2005;79:846-852
© 2005 The Society of Thoracic Surgeons
a Department of Cardiovascular Surgery, Osaka City General Hospital, Osaka
b Department of Cardiovascular Surgery, Shin-Tokyo Hospital, Chiba, Japan
Accepted for publication June 16, 2004.
* Address reprint requests to Dr Nishi, Department of Cardiovascular Surgery, Osaka City General Hospital, 2–13–22, Miyakojimahondori, Miyakojima-ku, Osaka, 534–0021, Japan (E-mail: nishi24{at}jc4.so-net.ne.jp).
BACKGROUND: Although several techniques for coronary artery bypass grafting have been introduced that incorporate coronary endarterectomy (CE), there is little information about late patency among the various CE methods. To clarify the quality of CE, we assessed clinical and angiographic results of our experience with this procedure on 127 patients who had diffusely diseased coronary arteries.
METHODS: Between January 1994 and December 2002, 127 patients underwent coronary artery bypass grafting with CE. Sixty-eight patients undergoing CE with long arteriotomies and on-lay patch bypass grafting (group O) were compared with 59 patients undergoing CE with the conventional pull-out method (group P).
RESULTS: Thirty-day mortality was 2.9% in group O and 6.8% in group P. The early angiographic results of 115 patients revealed a patency rate of 92.1% (grade A: 79.4%) in group O and 88.6% (grade A: 68.6%) in group P. Actuarial survival at 5 years was 90.7% in group O and 74.0% in group P (p = 0.1). Angiograms performed on 78 patients after a mean period of 21 ± 16 months showed a patency rate of 89.1% (grade A:76.1%) in group O and 81.0% (grade A: 38.1%) in group P (grade A: p < 0.001).
CONCLUSIONS: The midterm angiographic results of CE with long arteriotomies and on-lay patch bypass grafting were better than the results obtained with the conventional pull-out method. This procedure was found to be safe and effective for complete revascularization in patients with a severely and diffusely diseased coronary artery.
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