title: 2:1 pacemaker block below the upper tracking rate.
authors.affiliation: Department of Cardiology, OLVG Hospital, Amsterdam, the Netherlands.
authors.forename: Alexandre J
authors.initials: AJ
authors.lastname: Ouss
authors.forename: Gijsbert S
authors.initials: GS
authors.lastname: De Ruiter
mesh_terms: D000368:Aged; D054537:Atrioventricular Block / Q000175:diagnosis* / Q000209:etiology* / Q000517:prevention & control; D003937:Diagnosis, Differential; D004562:Electrocardiography / Q000379:methods*; D004868:Equipment Failure; D006801:Humans; D008297:Male; D010138:Pacemaker, Artificial / Q000009:adverse effects*
keywords: electrocardiogram; pacing