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A comparative synchronous coronary surgery survival study.

R J Flemma, D C Mullen, D Lepley

    The Annals of Thoracic Surgery
    |November 1, 1979
    PubMed
    Summary
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    Surgical therapy offers a survival advantage for patients with coronary artery disease, particularly those with three-vessel disease. Medical treatment showed comparable survival only in single-vessel disease cases.

    Area of Science:

    • Cardiovascular Surgery
    • Clinical Outcomes Research
    • Epidemiology

    Background:

    • The Veterans Administration Cooperative (VAC) Study established criteria for evaluating surgical versus medical treatment for coronary artery disease.
    • Comparing long-term survival is crucial for determining optimal treatment strategies.

    Purpose of the Study:

    • To compare the 4-year survival rates of surgically treated patients with those of medically treated patients.
    • To analyze survival outcomes based on the extent of coronary artery disease and left ventricular function.

    Main Methods:

    • A retrospective analysis of 229 surgically treated patients (1972-1974) using VAC Study criteria.
    • Comparison with a cohort of 310 medically treated patients from the VAC Study.
    • Inclusion of operative mortality in surgical group survival rates.

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    Main Results:

    • Surgical therapy demonstrated a 95% to 85% cumulative 4-year survival advantage over medical treatment.
    • Patients with three-vessel disease showed significantly better survival with surgery (94%) versus medical treatment (80%).
    • Improved survival for surgical intervention was also noted in two-vessel disease patients, especially with abnormal left ventricles (93% vs. 84%).

    Conclusions:

    • Surgical intervention provides a significant 4-year survival benefit for patients with coronary artery disease, particularly those with multi-vessel involvement.
    • The survival advantage of surgery is most pronounced in patients with three-vessel disease and those with two-vessel disease and impaired left ventricular function.
    • No significant survival difference was observed between surgical and medical cohorts for patients with single-vessel disease.