Gaurav A. Upadhyay

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BACKGROUND Pulmonary vein isolation (PVI) is recognized as a potentially curative treatment for atrial fibrillation (AF). Ablation of complex fractionated atrial electrograms (CFAEs) in addition to PVI has been advocated as a means to improve procedural outcomes, but the benefit remains unclear. OBJECTIVE This study sought t synthesize the available data(More)
BACKGROUND Students' perceptions of and participation in unprofessional behaviors may change during clinical clerkships. METHOD Third-year students anonymously reported observation, participation, and perceptions of 27 unprofessional behaviors before and five months after clerkships. RESULTS Student observation (21 of 27) and participation (17 of 27) in(More)
OBJECTIVES This study is a meta-analysis of prospective cohort studies comparing the impact of cardiac resynchronization therapy (CRT) for patients in atrial fibrillation (AF) and sinus rhythm (SR). BACKGROUND Although close to one-third of advanced heart failure patients exhibit AF, the impact of CRT in this group remains unclear. METHODS Prospective(More)
AIMS Several studies have reported a poor outcome with cardiac resynchronization therapy (CRT) in non-left bundle branch block (LBBB) patients. Although the left ventricular (LV) lead location is an important determinant of the clinical outcome, there is scant information regarding its role in non-LBBB patients. This study sought to examine the impact of(More)
INTRODUCTION Cardiac resynchronization therapy (CRT) recipients with ischemic cardiomyopathy (ICM) have scar segments that may limit ventricular resynchronization and clinical response. The impact of myocardial viability at the left ventricular (LV) pacing site on CRT response is poorly elucidated. METHODS AND RESULTS A retrospective cohort of 160 ICM(More)
Studies investigating bone marrow stem cell therapy (BMSCT) in patients with chronic ischemic cardiomyopathy have yielded mixed results. A meta-analysis of randomized controlled trials of BMSCT in patients with chronic ischemic cardiomyopathy was undertaken to assess its efficacy and the best route of administration. The MEDLINE, Embase, Cumulative Index to(More)
BACKGROUND First performed in 1992, the side-to-side isoperistaltic strictureplasty (SSIS) is a bowel-sparing surgical option for Crohn's patients presenting with sequentially occurring stenoses over long intestinal segments (>15 cm). This investigation was designed to study the outcomes and patterns of recurrence after a SSIS. MATERIALS AND METHODS(More)
PURPOSE The side-to-side strictureplasty is a bowel-sparing alternative to resection in the treatment of stricturing Crohn's disease. This study was initiated to review the adoption of the side-to-side strictureplasty as a new surgical technique and the relative outcomes a decade after its description. METHODS A total of 184 unique patients from six(More)
AIMS Although cardiac resynchronization therapy (CRT) reduces morbidity and mortality in patients with heart failure, a significant minority of patients do not respond adequately to this therapy. The objective of this study was to examine the impact of a 'multidisciplinary care' (MC) approach on the clinical outcome in CRT patients. METHODS AND RESULTS(More)
BACKGROUND In the treatment of patients with refractory atrial fibrillation (AF), the safety and efficacy of atrioventricular nodal ablation (AVNA) versus pharmacotherapy alone remains unclear. Additionally, the impact of AVNA in patients with reduced systolic function is of growing interest. METHODS AND RESULTS A total of 5 randomized or prospective(More)