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A Smartphone Application to Diagnose the Mechanism of Pediatric Supraventricular Tachycardia

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Abstract

Smartphone applications that record a single-lead ECG are increasingly available. We sought to determine the utility of a smartphone application (AliveCor) to record supraventricular tachycardia (SVT) and to distinguish atrioventricular reentrant tachycardia (AVRT) from atrioventricular nodal reentrant tachycardia (AVNRT) in pediatric patients. A prior study demonstrated that interpretation of standard event and Holter monitors accurately identifies the tachycardia mechanism in only 45 % of recordings. We performed an IRB-approved prospective study in pediatric patients undergoing an ablation for SVT. Tracings were obtained by placing the smartphone in three different positions on the chest (PI—horizontal, PII—rotated 60° clockwise, and PIII—rotated 120° clockwise). Two blinded pediatric electrophysiologists jointly analyzed a pair of sinus and tachycardia tracings in each position. Tracings with visible retrograde P waves were classified as AVRT. The three positions were compared by Chi-square test. Thirty-seven patients (age 13.7 ± 2.8 years) were enrolled in the study. Twenty-four had AVRT, and 13 had AVNRT. One hundred and eight pairs of tracings were obtained. The correct diagnosis was made in 27/37 (73 %) with position PI, 28/37 (76 %) with PII, and 20/34 (59 %) with PIII (p = 0.04 for PII vs. PIII and p = NS for other comparisons). A single-lead ECG obtained with a smartphone monitor can successfully record SVT in pediatric patients and can predict the SVT mechanism at least as well as previously published reports of Holter monitors, along with the added convenience of not requiring patients to carry a dedicated monitor.

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Acknowledgments

AliveCor provided use of the monitor (value $200) to the authors for research purposes.

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The authors have no potential conflicts of interest.

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Authors and Affiliations

  1. Division of Pediatric Cardiology, Department of Pediatrics, College of Physicians and Surgeons, Columbia University Medical Center, 3959 Broadway, 2-North, New York, NY, 10032, USA

    Dina J. Ferdman, Leonardo Liberman & Eric S. Silver

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  1. Dina J. Ferdman
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  2. Leonardo Liberman
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  3. Eric S. Silver
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Correspondence to Eric S. Silver.

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Ferdman, D.J., Liberman, L. & Silver, E.S. A Smartphone Application to Diagnose the Mechanism of Pediatric Supraventricular Tachycardia. Pediatr Cardiol 36, 1452–1457 (2015). https://doi.org/10.1007/s00246-015-1185-6

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  • DOI: https://doi.org/10.1007/s00246-015-1185-6

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