Inappropriate Atrial and Ventricular Pacing During Sustained Ventricular Tachycardia.

Patient A is an 83-year-old man with a history of non-ischemic cardiomyopathy with a left ventricular ejection fraction (LVEF) of 25%, sick sinus syndrome, and aortic stenosis treated with bioprosthetic aortic valve replacement, which was complicated by post-operative complete AV block requiring biventricular implantable cardioverter-defibrillator (Medtronic Viva S CRT-D) placement. This article is protected by copyright. All rights reserved.