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[Hyperactive carotid sinus reflex (author's transl)]

W Merx, S Effert, P Hanrath

    Deutsche Medizinische Wochenschrift (1946)
    |January 30, 1981
    PubMed
    Summary
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    In older adults, a hyperactive carotid sinus reflex is common but usually benign. Pacemaker implantation is only recommended for recurrent syncope unresponsive to other treatments.

    Area of Science:

    • Cardiology
    • Geriatrics
    • Neurology

    Context:

    • The carotid sinus reflex plays a role in cardiovascular regulation.
    • Asymptomatic individuals over 60 may exhibit a hyperactive reflex.
    • Distinguishing this reflex from hypersensitive carotid sinus syndrome is challenging.

    Purpose:

    • To investigate the prevalence and prognosis of hyperactive carotid sinus reflex in asymptomatic elderly patients.
    • To assess the diagnostic challenges in identifying hypersensitive carotid sinus syndrome.

    Summary:

    • A hyperactive carotid sinus reflex (ventricular asystole >3 seconds) was observed in 9/40 asymptomatic patients over 60.
    • Prognosis over two years was similar for patients with and without a hyperactive reflex.
    • No patients presented with symptoms of hypersensitive carotid sinus syndrome.

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    Impact:

    • Hyperactive carotid sinus reflex is frequent and generally has a favorable prognosis in the elderly.
    • Diagnosis of hypersensitive carotid sinus syndrome requires careful consideration due to frequent, benign reflex occurrences.
    • Pacemaker implantation should be reserved for cases of recurrent syncope with no other identifiable cause.