title: [Grade I block at the level of the bundle of His].
mesh_terms: D000200:Action Potentials; D000328:Adult; D002036:Bundle of His / Q000503:physiopathology*; D002037:Bundle-Branch Block / Q000175:diagnosis*; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged
vernacular_title: Blok I stopnia na poziomie peczka Hisa.