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Related Experiment Videos

Nitroglycerin-induced coronary vasoconstriction.

J J Dalal, J L McCans, J O Parker

    Catheterization and Cardiovascular Diagnosis
    |January 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Nitroglycerin, used to widen blood vessels during coronary angiography, can paradoxically cause severe coronary artery spasm. Caution is advised when interpreting angiograms after nitroglycerin administration.

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    Area of Science:

    • Cardiology
    • Pharmacology

    Background:

    • Nitroglycerin is a standard vasodilator in coronary angiography.
    • Its use aims to improve visualization of coronary arteries.

    Observation:

    • An unusual case of severe coronary artery spasm induced by nitroglycerin is reported.
    • This adverse reaction occurred despite the drug's intended vasodilating effect.

    Findings:

    • Nitroglycerin can precipitate coronary artery spasm.
    • This finding contrasts with its typical vasodilating action.

    Implications:

    • Coronary angiograms interpreted after nitroglycerin administration require careful consideration.
    • Clinicians should be aware of this potential paradoxical reaction.