title: Familial conduction defects.
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D001794:Blood Pressure; D002037:Bundle-Branch Block / Q000151:congenital / Q000235:genetics* / Q000503:physiopathology; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000151:congenital / Q000235:genetics* / Q000503:physiopathology; D006329:Heart Conduction System / Q000002:abnormalities / Q000503:physiopathology*; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D010375:Pedigree