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Related Experiment Videos

Coronary bypass for stable angina: a prospective randomized study.

F E Kloster, E L Kremkau, L W Ritzmann

    The New England Journal of Medicine
    |January 25, 1979
    PubMed
    Summary
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    Coronary-artery bypass surgery offers greater functional improvement and less unstable angina compared to medical therapy for stable angina patients. However, the study found no significant difference in the likelihood of death or myocardial infarction between the two treatments.

    Area of Science:

    • Cardiology
    • Cardiac Surgery
    • Internal Medicine

    Background:

    • Stable, disabling angina significantly impacts patient quality of life.
    • Medical therapy is the standard treatment, but surgical intervention is an option.

    Purpose of the Study:

    • To compare the efficacy of coronary-artery bypass surgery versus medical therapy in patients with stable angina.
    • To evaluate major cardiac events, functional status, and exercise performance.

    Main Methods:

    • 100 patients with stable angina were randomized to medical (49) or surgical (51) therapy.
    • Follow-up included assessment of cardiac events, functional classification, and exercise testing.

    Main Results:

    • No statistical difference in major cardiac events (death, infarction) after three years.

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  • Surgical patients showed greater functional improvement and less unstable angina (P < 0.01).
  • Surgical patients with three-vessel disease had fewer major events (P < 0.05).

    • Conclusions:

    • Coronary-artery bypass surgery leads to better functional improvement and reduced unstable angina than medical therapy.
    • The likelihood of death and myocardial infarction remains unchanged by surgical intervention in this patient group.