Heart Blocks During Sleep: A Case Report in a Healthy Subject | Zendy

Alain Buguet | Zendy; Bernard Roussel | Zendy; J Canicave | Zendy; Jean-Luc Grippari | Zendy; Patrizia Viola | Zendy

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Heart Blocks During Sleep: A Case Report in a Healthy Subject

Author(s) -

Alain Buguet,

Bernard Roussel,

J Canicave,

Jean-Luc Grippari,

Patrizia Viola

Publication year - 1981

Publication title -

sleep

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.222

H-Index - 207

eISSN - 1550-9109

pISSN - 0161-8105

DOI - 10.1093/sleep/4.1.99

Subject(s) - medicine , tonic (physiology) , heart rate , sleep (system call) , abnormality , cardiology , vagal tone , anesthesia , sleep stages , polysomnography , heart rate variability , blood pressure , apnea , psychiatry , computer science , operating system

Cardiac arrhythmia was fortuitously discovered during an experimental sleep recording in a healthy 50-year-old man. a 24 hr electrocardiographic (ECG) monitoring revealed the prevalence of these abnormalities during sleep and their absence during the awake period. Sleep and ECG were recorded during 4 consecutive nights. Numerous (500-1, 100 events/night) heart blocks and sinus pauses occurred 60-80 min after going to bed. They were never observed during awakenings and were exacerbated during paradoxical sleep. The atrioventricular blocks were of the Wenckebach-Luciani type. No other abnormality was found. These conduction abnormalities are discussed as possibly due to phasic increases in vagal firing, which during paradoxical sleep would be superimposed on the tonic increase in heart rate.

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