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Previous studies indicate a marked circadian variation of sudden cardiac death (SD). Its weekly and monthly distribution, however is unclear. We analyzed the West Berlin (2.1 Mio population) emergency medical services data bank with respect to the weekly and monthly distribution of 24.061 (54% male) consecutive patients with SD registered during the years 1987-1991. SD was defined as sudden non-traumatic...
To determine the circadian variation of sustained ventricular tachyarrhythmias, 78 consecutive patients with an implanted cardioverter defibrillator were analyzed with regard to the occurrence of spontaneous shock episodes during a mean follow-up period of 18 +/- 12 months. In 39 patients 207 shock episodes that terminated potentially life-threatening ventricular tachyarrhythmias could be related...
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