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Related Experiment Videos

Exercise-induced S-T segment elevation in variant angina

A Lahiri, B Subramanian, M Millar-Craig

    The American Journal of Cardiology
    |April 1, 1980
    PubMed
    Summary
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    This study identifies an unusual pattern of exercise-induced chest pain and ECG changes in patients with severe coronary artery disease. This syndrome indicates a high risk of myocardial infarction and poor prognosis.

    Area of Science:

    • Cardiology
    • Diagnostic Imaging
    • Electrophysiology

    Background:

    • Ischemic heart disease presents diverse manifestations during stress testing.
    • Understanding atypical presentations is crucial for risk stratification.

    Observation:

    • Five patients with ischemic heart disease exhibited paradoxical S-T segment elevation post-exercise, accompanied by chest pain.
    • Thallium-201 scintigraphy confirmed reversible myocardial ischemia in regions with significant coronary artery stenosis.
    • Ambulatory ECG monitoring revealed resting S-T segment abnormalities mirroring exercise-induced changes.

    Findings:

    • The observed syndrome is linked to severe, multi-vessel coronary artery disease.
    • A significant proportion of affected patients (3/5) experienced myocardial infarction shortly after diagnosis.

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  • The condition carries a notably poor prognosis, with two fatalities within the study cohort.

    • Implications:

    • This distinct clinical entity warrants recognition for early diagnosis and intervention.
    • It highlights the importance of comprehensive ECG and imaging in evaluating complex ischemic heart disease.
    • Aggressive management strategies may be necessary for patients presenting with this high-risk syndrome.