Shailendra Upadhyay

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Proximal right coronary artery occlusion caused transient loss of sensing and capture of the atrial lead of a permanent dual-chamber pacemaker. Forty-five days after percutaneous revascularization, the atrial lead was discovered to be functioning normally. We hypothesize that ischemia of the right atrium caused stunning of the atrial myocardium at the(More)
BACKGROUND Variability in atrioventricular (AV) node location in congenital heart disease (CHD) can make catheter ablation for atrioventricular nodal reentrant tachycardia (AVNRT) challenging. OBJECTIVE The purpose of this study was to describe institutional technique and outcomes for slow pathway modification in a cohort with CHD. METHODS The study(More)
A 6-month-old female with William's syndrome and biventricular outflow obstruction had a cardiac arrest due to myocardial ischemia soon after induction of anesthesia during cardiac catheterization. The patient was supported with extra corporeal membrane oxygenator (ECMO) and successful stenting of the left main coronary artery was performed as a rescue(More)
A 19-year-old male presented to the emergency department (ED) following intermittent episodes of palpitations. Classical "epsilon waves" noted on his initial electrocardiogram prompted an evaluation for arrhythmogenic right ventricular dysplasia (ARVD). The diagnosis was confirmed with magnetic resonance imaging of the heart and stress test. A prompt(More)
Background: Subacute cardiotoxicity, consisting of acute myocyte damage and associated left ventricular dysfunction, occurs early during anthracycline therapy. We investigated the impact of myocardial dysfunction, defined herein by a shortening fraction (SF) < 29 % at any time during or after anthracycline therapy, on late onset cardiomyopathy and all-cause(More)
An infant with Down's syndrome was noted to have hypoxemia and tachypnea at birth. The clinical examination, electrocardiogram (ECG) and the chest X-ray findings suggested a specific diagnosis that is not usually associated with Down's syndrome. Despite the extremely rare association of Ebstein's anomaly with Down's syndrome, this diagnosis was highly(More)
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