[
Abstract]
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J.Jpn. Surg. Soc.. 87(9): 1013-1016, 1986
Report on the annual meeting
SURGERY FOR CORONARY ARTERY DISEASE ; ITS LONG-TERM RESULTS, AND CLINICAL APPLICATION OF LASER METHOD
Between 1970 and 1985, 227 patients with coronary artery occlusive disease underwent aorto-coronary bypass (A-C bypass) and other procedures. Among these patients, 192 had A-C bypass alone and A-C bypass in addition to correction of valvular lesions or arterialization of the coronary vein, myocardial puncture by laser. The remaining 35 had surgical corrections for myocardial infarction and its complications.
Among 106 patients who underwent A-C bypass alone over 6 months ago and those follow-up study could be performed, 94% of all cases were in NYHA I and returned to normal work at mean of 4 years and 3 months after surgery. Improved left ventricular function has been maintained postoperatively in the patients with complete revascularization. Improved operative techniques, in addition to intraoperative balloon angioplasty and onlay patch grafting, have increased the patency rate (78% in 1mm, 94% in 2mm of coronary diameter) of the grafts with postoperative anticoagulant therapy.
On the other hand, myocardial puncture by laser was successfully carried out in 55 year-old male patient with recurrent constrictive pericarditis and severe anginal attack in whom A-C bypass could not be performed. He is doing well without any complications. And vascular anastomoses for small caliber vessels such as A-C bypass were also done by laser experimentally and clinically. These methods may be clinically recommended in the near future.
On the basis of our long-term observations, coronary bypass surgery, particularly in complete revascularization, provides for significant improvement in both the quality and life expectancy of patients with severe coronary heart disease. Treadmill exercise test and magnetic resonance image (MRI) were useful, non-invasive and acceptable examinations in long-term follow-up.
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