A recent article in the Heart Rhythm Journal examines the performance of a smart-phone based application to detect atrial fibrillation. McManus et al conducted real-time analyses using two different statistical methods: root mean square of successive RR differences and Shannon entropy. They found that an algorithm combining both methods demonstrated excellent sensitivity (0.962), specificity (0.975), and accuracy (0.968) for beat-to-beat discrimination of an irregular pulse during afib from sinus rhythm. In an editorial, Dr. Dave Callans (from the University of Pennsylvania) congratulated the authors for this promising new strategy but raised questions on the clinical utility of this application in the absence of better strategies to manage and interpret this new data.
Published by Heart Rhythm Center
Dr. Williams obtained his undergraduate degree with a double major in Biomedical and Electrical Engineering at Vanderbilt University. He was then awarded a Keck Fellowship for graduate school at the University of Pittsburgh where he obtained his Master’s degree in Bioengineering. Dr. Williams went on to obtain his medical degree at Drexel University in Philadelphia and completed 5 years of Fellowship training in both Cardiovascular Diseases and Clinical Cardiac Electrophysiology at the University of Pittsburgh Medical Center. His unique background and extensive knowledge of both engineering and cardiology have earned Dr. Williams many accolades in both clinical and academic settings. He’s published over 20 manuscripts and abstracts in the field of cardiology/electrophysiology and has received awards from both the American College of Cardiology Foundation and the National Institutes of Health. Dr. Williams started in the Invasive Electrophysiology Laboratory at The Good Samaritan Hospital in 2008 and, in the last three years, the Heart Rhythm Center has published outcomes on pacemaker and defibrillator implantations as well as the safety and efficacy of high frequency jet ventilation during EP studies with ablation under his direction. View all posts by Heart Rhythm Center