[Circadian variability of rhythm disorders].
Cardiac arrhythmias exhibit also a circadian variability. It is impressingly apparent in sustained ventricular tachycardia and sudden cardiac death. Adrenergic stimulation during morning hours, a physiologic event for the transition from nocturnal to diurnal activity, appears to be an important arrhythmogenic factor (25). The results of the BHAT-study show that beta blocking agents may substantially reduce the risk for sudden cardiac death during morning hours. This notion should thus be considered in treating patients at risk.
Fromer
M
M
Division de cardiologie, Centre hospitalier universitaire vaudois (CHUV), Lausanne.
Weidemann
H
H
D001145:Arrhythmias, Cardiac / Q000503:physiopathology*; D005117:Cardiac Complexes, Premature / Q000503:physiopathology; D002940:Circadian Rhythm; D016757:Death, Sudden, Cardiac; D006801:Humans; D013610:Tachycardia / Q000503:physiopathology
Die zirkadiane Variabilität von Rhythmusstörungen.