William C Choe

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Ischemic stroke cause remains undetermined in 30% of cases, leading to a diagnosis of cryptogenic stroke. Paroxysmal atrial fibrillation (AF) is a major cause of ischemic stroke but may go undetected with short periods of ECG monitoring. The Cryptogenic Stroke and Underlying Atrial Fibrillation trial (CRYSTAL AF) demonstrated that long-term(More)
BACKGROUND Prolongation of the corrected QT (QTc) interval on 12-lead electrocardiogram is related to total mortality and sudden cardiac death. The value of the paced QTc interval in predicting mortality has not been investigated. OBJECTIVE To evaluate the relationship between the paced QTc interval and mortality. METHODS Of 1440 patients who underwent(More)
The purposes of the study were to evaluate and characterize the cavotricuspid isthmus using multipoint high density voltage gradient mapping (HD-VGM) to see if this would improve on current ablation techniques compared to standard cavotricuspid isthmus ablation techniques. Group 1, 25 patients who underwent ablation using standard methods of 3D mapping and(More)
Sri Sundaram, MD, FHRS, Chandara Mam, MD, William Choe, MD, Ryan Aleong, MD, FHRS, Kartik Reddy, MD, T. Jared Bunch, MD, FHRS From the South Denver Cardiology Associates, Littleton, Colorado, Calmette Hospital, Phnom Penh, Cambodia, Division of Cardiology, University of Colorado School of Medicine, Aurora, Colorado, South Denver Anesthesia, Englewood,(More)
Introduction High-density (HD) mapping of tachycardias can be helpful in identifying the circuits in complex arrhythmias. It has also been shown to be helpful in identifying the slow pathway in atrioventricular nodal reentrant tachycardia (AVNRT). We participated in the NODE-1 study, which was a multicenter, placebo-controlled, double-blinded, dose-ranging(More)
This study aims to describe a novel method of High Density Activation Sequence Mapping combined with Voltage Gradient Mapping Overlay (HD-VGM) to quickly localize and terminate atypical atrial flutter. Twenty-one patients presenting with 26 different atypical atrial flutter circuits after a previous catheter or surgical AF ablation were studied. HD-VGM was(More)
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