Use of intravenous sotalol in newborns with supraventricular tachycardia Hannah Kim, MD, Jennifer Wolff, PharmD, BCPPS, Aarti Dalal, DO, George F. Van.

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Use of intravenous sotalol in newborns with supraventricular tachycardia Hannah Kim, MD, Jennifer Wolff, PharmD, BCPPS, Aarti Dalal, DO, George F. Van Hare, MD, FHRS, Jennifer N. Avari Silva, MD, FHRS HeartRhythm Case Reports Volume 3, Issue 7, Pages 332-335 (July 2017) DOI: 10.1016/j.hrcr.2017.03.010 Copyright © 2017 Heart Rhythm Society Terms and Conditions

Figure 1 A: Patients' presenting rhythm, a narrow complex long RP tachycardia with an abnormal P-wave axis and heart rate of 193 beats per minute—consistent with ectopic atrial tachycardia. B: Sinus rhythm with aberrantly conducted and blocked premature atrial contractions pre–sotalol infusion with a corrected QT interval (QTc) of 447 msec. C: Postinfusion electrocardiogram (ECG) demonstrating a QTc of 480 msec. The QTc lengthened by 33 msec. D: Pre-discharge ECG on a sotalol dose of 60 mg/m2/dose every 8 hours. The QTc measured 460 msec. HeartRhythm Case Reports 2017 3, 332-335DOI: (10.1016/j.hrcr.2017.03.010) Copyright © 2017 Heart Rhythm Society Terms and Conditions

Figure 2 A: Patients' presenting rhythm, a narrow complex short RP tachycardia with a rate of 230 beats per minute, consistent with atrioventricular reentrant tachycardia. B: Sinus rhythm electrocardiogram (ECG) (no preexcitation) pre–sotalol infusion with a corrected QT interval (QTc) of 408 msec. C: Postinfusion ECG demonstrating a QTc of 465 msec. The QTc lengthened by 57 msec. D: Predischarge ECG on a stable oral sotalol dose of 45 mg/m2/dose every 8 hours with a QTc of 440 msec. HeartRhythm Case Reports 2017 3, 332-335DOI: (10.1016/j.hrcr.2017.03.010) Copyright © 2017 Heart Rhythm Society Terms and Conditions