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Related Experiment Videos

Topical nitroglycerin ointment in Raynaud's phenomenon.

M Fischer, B Reinhold, H Falck

    Zeitschrift Fur Kardiologie
    |May 1, 1985
    PubMed
    Summary

    Nitroglycerin ointment significantly improved finger blood flow in Raynaud's phenomenon patients. This treatment demonstrated both local vascular effects and systemic hemodynamic changes, including decreased blood pressure and cardiac output.

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    Area of Science:

    • Cardiovascular Medicine
    • Pharmacology

    Background:

    • Raynaud's phenomenon is a condition characterized by exaggerated vasoconstriction in the extremities.
    • Topical vasodilators are explored for managing peripheral vascular disorders.

    Purpose of the Study:

    • To assess the hemodynamic effects of topical nitroglycerin ointment in patients with Raynaud's phenomenon.
    • To determine if nitroglycerin ointment provides local and/or systemic vascular benefits.

    Main Methods:

    • A double-blind study involving 22 patients with Raynaud's phenomenon.
    • Hemodynamic measurements included finger blood flow (venous occlusion plethysmography) and cardiac output (impedance cardiography).
    • Patients received either 800 mg of 2% nitroglycerin ointment or placebo applied to one hand.

    Main Results:

    • Nitroglycerin significantly increased finger blood flow in the treated hand compared to placebo.
    • Systolic blood pressure and cardiac output significantly decreased following nitroglycerin application.
    • No significant changes in hemodynamic parameters were observed in the placebo group.

    Conclusions:

    • Nitroglycerin ointment exerts both local vasodilatory effects and systemic hemodynamic influences in Raynaud's phenomenon.
    • The observed increase in finger blood flow suggests therapeutic potential for managing Raynaud's symptoms.
    • Systemic effects include a reduction in blood pressure and cardiac output.

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