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Electrophysiologic evaluation of elderly patients with sinus bradycardia: a long-term follow-up study

D Gann, A Tolentino, P Samet

    Annals of Internal Medicine
    |January 1, 1979
    PubMed

    Insights

    Persistent sinus bradycardia survival rates are comparable to the general population. Abnormal corrected sinus-node recovery time accurately predicts serious sinus node disease, aiding pacemaker selection, especially for syncope patients.

    Area of Science:

    • Cardiology
    • Electrophysiology

    Background:

    • Persistent sinus bradycardia is a common cardiac arrhythmia.
    • Evaluating its long-term prognosis and diagnostic tools is crucial.

    Purpose of the Study:

    • To assess the long-term survival of patients with persistent sinus bradycardia.
    • To evaluate the diagnostic accuracy of corrected sinus-node recovery time (CNRT) in predicting serious sinus node disease.

    Main Methods:

    • Prospective electrophysiological evaluation and follow-up of 103 patients with persistent sinus bradycardia.
    • Analysis of corrected sinus-node recovery time (CNRT) and its correlation with clinical outcomes and symptoms.

    Main Results:

    • The 5-year survival rate was 74.8%, similar to the general population.
    • Abnormal CNRT predicted serious sinus node disease with 90% accuracy overall and 100% in syncope patients.
    • CNRT sensitivity was 66%.

    Conclusions:

    • Sinus bradycardia patients have a comparable survival rate to the general population.
    • Abnormal CNRT is a specific and predictive index for serious sinus node disease.
    • CNRT is a valuable tool for selecting patients for pacemaker therapy, particularly those with syncope.

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