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[Exercise testing and atrial pacing in the diagnosis of latent coronary insufficiency (author's transl)]

H U Lehmann, H Hochrein

    Deutsche Medizinische Wochenschrift (1946)
    |February 25, 1977
    PubMed

    Insights

    The rate-stimulation test is valuable for diagnosing coronary insufficiency in elderly patients with limited heart rate response during exercise. It helps identify underlying heart disease when standard exercise ECG is inconclusive.

    Area of Science:

    • Cardiology
    • Exercise Physiology

    Context:

    • Persistent angina with normal resting and exercise electrocardiograms (ECG) presents a diagnostic challenge.
    • Assessing cardiovascular function often involves evaluating heart rate response to exercise.

    Purpose:

    • To evaluate the diagnostic utility of right atrial pacing (rate-stimulation test) in identifying coronary insufficiency.
    • To compare the effectiveness of the rate-stimulation test versus standard exercise ECG in different age groups.

    Summary:

    • Right atrial pacing was conducted on patients with angina and normal baseline ECGs.
    • Significant S-T depression, indicative of myocardial ischemia, occurred during exercise pacing in most subjects.
    • The rate-stimulation test proved more effective than standard exercise protocols for diagnosing coronary insufficiency, particularly in elderly individuals with blunted heart rate responses.

    Impact:

    • The findings suggest that standard exercise testing may underestimate coronary insufficiency in certain patient populations.
    • The rate-stimulation test offers a valuable alternative for diagnosing coronary artery disease in patients with reduced exercise tolerance or inadequate heart rate increase.
    • This diagnostic approach can aid in the early recognition of underlying cardiovascular disease, especially in older adults.

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