Nocturnal deaths among patients with chronic bronchitis and emphysema Patients with chronic bronchitis and emphysema may develop episodes of severe hypoxaemia with associated ventricular arrhythmias during sleep.' 2 We examined the possibility that such nocturnal abnormalities predispose such patients to sudden death.(42%) of 38 who did not), although the difference was not significant.
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Allan et al. (1984) studied this question.