title: Tachycardia-induced cardiomyopathy caused by a special pacemaker algorithm.
abstract: An elderly lady presented with breathlessness, fever and palpitations. She was treated for community-acquired pneumonia with antibiotics. Subsequently, she went into acute pulmonary edema. She was managed with standard heart failure medications and a trial of noninvasive ventilation. ECG showed A-V sequential pacing at a rate of 150/min with broad QRS. It was thought to be a pacemaker-related tachycardia. On pacemaker check, a special algorithm (atrial fibrillation suppression algorithm) was switched off. She subsequently improved. We here review the cause of this tachycardia-induced cardiomyoapthy.
authors.affiliation: Sheffield Teaching Hospitals, Cardiology, Sheffield, UK. dramar_deep@yahoo.co.uk
authors.forename: Amardeep Ghosh
authors.initials: AG
authors.lastname: Dastidar
authors.forename: Paul
authors.initials: P
authors.lastname: Sheridan
mesh_terms: D000369:Aged, 80 and over; D000465:Algorithms; D009202:Cardiomyopathies / Q000175:diagnosis / Q000209:etiology* / Q000628:therapy; D004562:Electrocardiography; D005260:Female; D006801:Humans; D010138:Pacemaker, Artificial / Q000009:adverse effects*; D011014:Pneumonia / Q000150:complications* / Q000188:drug therapy; D011474:Prosthesis Design; D012804:Sick Sinus Syndrome / Q000628:therapy*; D013617:Tachycardia, Supraventricular / Q000175:diagnosis / Q000209:etiology* / Q000628:therapy; D016896:Treatment Outcome