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Related Experiment Videos

Calcium antagonists in heart failure.

S Klugmann, A Salvi, F Camerini

    Herz
    |April 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    Calcium antagonists like nifedipine show short-term benefits in heart failure but not sustained effects with daily use. Acute doses of verapamil, diltiazem, and nifedipine improve hemodynamics in pulmonary hypertension.

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    Area of Science:

    • Cardiology
    • Pharmacology

    Background:

    • Clinical use of calcium antagonists in heart failure is limited, primarily involving nifedipine.
    • Limited data exists for diltiazem and verapamil in congestive heart failure.

    Purpose of the Study:

    • To review the clinical experience and hemodynamic effects of calcium antagonists in congestive heart failure and pulmonary hypertension.

    Main Methods:

    • Review of existing clinical data and hemodynamic studies on nifedipine, diltiazem, and verapamil.
    • Analysis of acute and chronic administration effects in patients with heart failure, aortic regurgitation, and pulmonary hypertension.

    Main Results:

    • Single-dose nifedipine decreased vascular resistance and improved cardiac output in acute heart failure.

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  • Sustained daily nifedipine (80 mg) did not show significant improvements in chronic heart failure.
  • Acute administration of verapamil, diltiazem, and nifedipine demonstrated favorable hemodynamic effects in pulmonary hypertension.

    • Conclusions:

    • Nifedipine offers acute hemodynamic benefits in heart failure but lacks sustained efficacy.
    • Calcium antagonists may be beneficial in pulmonary hypertension, with potential for long-term use in select cases.