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Sleep and night-type arrhythmias.

K Otsuka, T Yanaga, Y Ichimaru

    Japanese Heart Journal
    |July 1, 1982
    PubMed
    Summary
    This summary is machine-generated.

    This study reveals two types of arrhythmias influenced by sleep. Paroxysmal tachyarrhythmias increase during REM sleep, while other arrhythmias show different sleep stage associations.

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    Area of Science:

    • Cardiology
    • Sleep Medicine
    • Autonomic Nervous System

    Background:

    • Arrhythmias can manifest nocturnally, suggesting a link with sleep states.
    • Understanding this relationship is crucial for managing cardiac conditions.

    Purpose of the Study:

    • To investigate the association between specific sleep stages and different types of arrhythmias.
    • To differentiate arrhythmia patterns based on sleep-induced autonomic nervous system changes.

    Main Methods:

    • Utilized 24-hour Holter monitoring and all-night polygraphic recordings.
    • Categorized patients into five groups based on arrhythmia type (VPCs, supraventricular, tachyarrhythmias).
    • Analyzed arrhythmia incidence across five standard sleep stages (I, II, III, IV, REM).

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    Main Results:

    • Paroxysmal tachyarrhythmias significantly increased during REM sleep (p < 0.05).
    • Grade 2 ventricular premature contractions (VPCs) showed a trend of increase in sleep stage IV (0.05 < p < 0.1).
    • Other arrhythmias did not show significant increases during REM sleep.

    Conclusions:

    • Two distinct arrhythmia types influenced by sleep were identified.
    • One type is linked to sympathetic nervous system surges during REM sleep.
    • The second type may be associated with increased vagal tone during sleep.