title: ECG quiz: what is the cause of the apparent pacemaker malfunction?
authors.forename: Ross
authors.initials: R
authors.lastname: Butschek
authors.forename: Robert M
authors.initials: RM
authors.lastname: Farrell
authors.forename: Laszlo
authors.initials: L
authors.lastname: Littmann
mesh_terms: D000369:Aged, 80 and over; D016477:Artifacts; D001281:Atrial Fibrillation / Q000150:complications / Q000517:prevention & control*; D004562:Electrocardiography / Q000379:methods*; D004868:Equipment Failure; D019544:Equipment Failure Analysis; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D010138:Pacemaker, Artificial / Q000009:adverse effects*; D014693:Ventricular Fibrillation / Q000175:diagnosis* / Q000209:etiology*