Key result
Five-year survival after coronary bypass surgery improved from 78.0% in the initial experience to 87.8% in the subsequent experience, strongly influenced by the degree of revascularization.
Why the study?
What factors influence late survival after coronary bypass surgery?
Population
792 patients undergoing coronary bypass surgery between 1968 and 1972 performed by a single surgeon
Comparison
Coronary bypass surgery vs Initial cohort of 250 patients
Design
Cohort
Follow-up
5 years
Authors
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Emphasizes complete revascularization for late survival after CABG; leaves open validation in contemporary randomized cohorts.
Cohort (n=792)
No
What factors influence late survival after coronary bypass surgery?
Absolute Event Rate: 87.8% vs 78%
Late survival after coronary bypass surgery is primarily determined by the quality of the surgical result, completeness of revascularization, and preoperative left ventricular function.
Lawrie et al. (1978) conducted a cohort in Coronary artery disease (n=792). Coronary bypass surgery (subsequent experience) vs. Coronary bypass surgery (initial experience) was evaluated on Five year crude survival. Five-year survival after coronary bypass surgery improved from 78.0% in the initial experience to 87.8% in the subsequent experience, strongly influenced by the degree of revascularization.
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