title: Blocked atrial bigeminy.
authors.affiliation: Medical Service/St Vincent Hospital, Worcester, MA, USA.
authors.forename: David H
authors.initials: DH
authors.lastname: Spodick
mesh_terms: D001281:Atrial Fibrillation; D018880:Atrial Premature Complexes / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000503:physiopathology; D004452:Echocardiography; D006801:Humans; D008297:Male; D008875:Middle Aged