title: Pacemaker pseudodysfunction with a coronary sinus pacemaker.
mesh_terms: D000368:Aged; D001282:Atrial Flutter / Q000503:physiopathology*; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D010138:Pacemaker, Artificial / Q000009:adverse effects*