This case series suggests that a short P-R interval can be an inherited familial trait.
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Short PR interval may be familial in this kindred; hypothesis-generating observation that should not change practice or prompt screening.
Five sibs with related parents are presented. All the sibs have short atrioventricular conduction time (P-R interval). The short P-R interval is probably an inherited feature in the family.
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Pål Møller (1976) studied this question.
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