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[T-infarct in exercise electrocardiography].

C Nissen-Druey

    Schweizerische Medizinische Wochenschrift
    |January 11, 1975
    PubMed
    Summary
    This summary is machine-generated.

    Transient T-wave normalization during exercise after myocardial infarction indicates a worse prognosis. Follow-up electrocardiograms (ECGs) post-myocardial infarction should be performed at rest.

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    Area of Science:

    • Cardiology
    • Clinical Electrophysiology

    Context:

    • Post-myocardial infarction (MI) patients often exhibit T-wave abnormalities.
    • Electrocardiogram (ECG) findings are crucial for assessing cardiac health after MI.

    Purpose:

    • To investigate the significance of T-wave vector changes during exercise in patients post-MI.
    • To determine if T-wave normalization during exertion correlates with prognosis.

    Summary:

    • A study of 60 patients with negative T-waves post-MI observed T-wave vector normalization towards normal during mild to moderate exercise in 36 patients.
    • It is hypothesized that the T-vector during exercise indicates the area of maximum ischemia, specifically the border of the infarction.
    • Unexpected transient T-wave normalization after MI suggests a poorer outcome, not an improvement.

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    Impact:

    • This finding suggests that T-wave normalization during exercise is a negative prognostic indicator.
    • Recommends that all follow-up ECGs after myocardial infarction should be conducted while the patient is at complete rest to avoid misinterpretation.