Key result
Familial inheritance of conduction abnormalities was observed in 26 of 59 family members, suggesting transmission as an autosomal dominant trait with varying expressivity.
Population
59 members in four generations of a family with a history suggestive of familial bundle-branch disease and…
Design
Case_series
Authors
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Alerts clinicians to screen relatives in unexplained conduction disease; leaves open broader genetic testing or management changes pending confirmation.
Observational (n=59)
Identifies a familial pattern of conduction abnormalities (right bundle-branch block, left axis deviation, complete heart block) transmitted as an autosomal dominant trait.
Schaal et al. (1973) conducted an observational in Familial bundle-branch disease and heart block (n=59). Familial inheritance was evaluated on Conduction abnormalities (abnormal electrocardiograms and heart block). Familial inheritance of conduction abnormalities was observed in 26 of 59 family members, suggesting transmission as an autosomal dominant trait with varying expressivity.
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