Copyright © 1983 by the European Society of Cardiology.
© 1983, by the European Society of Cardiology
Angina pectoris, one to 10 years after aorto-coronary bypass surgery
University Hospital Dijkzigt, Thorax Center, Erasmus University Rotterdam, The Netherlands
*Interuniversity Cardiology Institute Amsterdam The Netherlands
Received 26 November 1982; revised 18 April 1983; .
Requests for reprints to: Karin Laird-Meeter, Thorax Center, Erasmus University P.O. Box 1738, 3000 DR Rotterdam, The Netherlands. Telephone: 010–635356.
Abstract
The incidence of angina pectoris (AP) after bypass surgery was assessed in 1041 patients operated on consecutively between 1971 and 1980. Of the 977 survivors, 920 (94%) participated in the study with a followup time varying from 1 to 10 years (mean 3.5 years). Post-operative angina pectoris was present at 1 year in 277 patients (30%), at 3 years in 46%, at 8 years in 50%. The pain limited usual physical activities in 17.5%, 30% and 25%, respectively at these times. Nonetheless, 89% of the respondents felt improved by surgery. Factors without predictive value for late outcome were sex, number of pre-operative diseased vessels, and pre-operative ejection fraction. A correlation was found between post-operative AP and younger age at surgery in the males only (P< 0.001); between AP and patency rate of the bypass graft (P<0.005) and with the status of the coronary arterial tree at three years post-operatively (P<0.001) in both sexes. The percentage of patients with recurrent AP increased with time after surgery up to 3 years, but remained stable thereafter. In conclusion, post-operative AP seems initially related to decreased functioning of the bypass graft, later to progression of coronary sclerosis in the native circulation.
Key Words: Coronary artery bypass surgery • angina pectoris • graft-patency • progression coronary sclerosis
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