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Related Experiment Videos

Multivessel coronary artery spasm.

R F Dunn, D T Kelly, N Sadick

    Circulation
    |August 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

    Variant angina, a form of myocardial ischemia, can cause dangerous arrhythmias like ventricular fibrillation. Nifedipine therapy effectively resolved chest pain and irregular heartbeats in a patient with this condition.

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    Area of Science:

    • Cardiology
    • Electrophysiology
    • Pharmacology

    Background:

    • Variant angina (Prinzmetal's angina) is characterized by coronary artery spasm causing myocardial ischemia.
    • Coronary artery spasm can occur without significant atherosclerotic disease.

    Observation:

    • A 60-year-old patient presented with variant angina and myocardial ischemia in two distinct coronary artery territories.
    • Electrocardiogram (ECG) showed ST-segment elevation in anteroseptal leads, indicative of ischemia.
    • Ventricular fibrillation, a life-threatening arrhythmia, was observed during the ischemic episodes.

    Findings:

    • Myocardial ischemia occurred despite the absence of obstructive coronary atherosclerosis.
    • The patient experienced chest pain and ventricular fibrillation associated with ST-segment elevation.

    Related Experiment Videos

  • Nifedipine treatment led to the complete resolution of chest pain and arrhythmias.

    • Implications:

    • This case highlights that variant angina can manifest with severe ischemia and arrhythmias in the absence of significant coronary artery disease.
    • Nifedipine, a calcium channel blocker, is an effective treatment for managing variant angina and its associated complications.
    • Understanding the pathophysiology of coronary vasospasm is crucial for diagnosing and treating such conditions effectively.