title: [Problematic pacemaker].
authors.forename: M
authors.initials: M
authors.lastname: Eldar
mesh_terms: D000368:Aged; D004562:Electrocardiography; D005260:Female; D006801:Humans; D010138:Pacemaker, Artificial; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000209:etiology