Syncope in a patient with a dual-chamber pacemaker: What is the possible mechanism?


A 90-year-old woman with hypertension and a history of a dual-chamber, rate-modulated (DDDR) pacemaker implantation 9 years previously presented to the hospital with complaints of syncope, moderate shortness of breath, and a headache. She denied any other symptoms. Her vital signs were as follows: blood pressure, 110/80 mmHg; pulse, 35 beats/min (bpm); and… (More)
DOI: 10.1016/j.joa.2016.09.002


2 Figures and Tables