title: Demand pacing for transient heart block associated with changes in posture.
mesh_terms: D000368:Aged; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000150:complications / Q000628:therapy*; D006329:Heart Conduction System; D006339:Heart Rate; D006352:Heart Ventricles; D006801:Humans; D008722:Methods; D010138:Pacemaker, Artificial; D011187:Posture; D013575:Syncope / Q000209:etiology