Background Implantable cardioverter–defibrillators (ICDs) prevent sudden death from
cardiac causes in selected patients but require the use of transvenous lead systems. To …

Objectives: This study sought to assess the impact of targeted left ventricular (LV) lead
placement on outcomes of cardiac resynchronization therapy (CRT). Background …

Objectives: The purpose of this study was to characterize the pattern of atrial remodeling
seen with human aging. Background: Atrial fibrillation (AF) occurs in 3% to 4% of the …

Objectives: The purpose of this study was to perform a detailed analysis of the P-wave
morphology (PWM) in focal atrial tachycardia (AT) and construct and prospectively evaluate …

Cardiac resynchronization therapy (CRT) offers proven benefit to patients with refractory
symptomatic chronic heart failure (New York Heart Association Class III or IV), severe left …

Background—The objective of this study was to describe the electrophysiological
characteristics, anatomic distribution, and long-term outcome after focal ablation (RFA) of …

Transplant renal artery stenosis (TRAS) is a common complication after transplantation and
is an important cause of graft dysfunction. Damage from graft rejection, trauma, and …

Background Maintenance of sinus rhythm has been associated with lower mortality, but
whether atrial fibrillation (AF) ablation per se benefits hard outcomes such as mortality and …

Objectives: The goal of this study was to characterize the electrocardiographic and
electrophysiologic features and frequency of focal atrial tachycardia (AT) originating from the …

Background—Although atrial electrical remodeling has been studied extensively in animal
models, the reversibility of this phenomenon after termination of clinical atrial fibrillation (AF) …