Efficacy of a Subcutaneous Implantable Cardioverter Defibrillator in a Child with Early Repolarization Syndrome

Moe Taki; Shota Muraji; Hitoshi Mori; Taisuke Nabeshima; Koich Toda; Yoichi Iwamoto; Satoshi Masutani; Takuro Kojima; Shigeki Yoshiba; Toshiki Kobayashi; Naokata Sumitomo

doi:10.1536/ihj.20-661

Case Reports

Efficacy of a Subcutaneous Implantable Cardioverter Defibrillator in a Child with Early Repolarization Syndrome

Moe Taki, Shota Muraji, Hitoshi Mori, Taisuke Nabeshima, Koich Toda, Yoichi Iwamoto, Satoshi Masutani, Takuro Kojima, Shigeki Yoshiba, Toshiki Kobayashi, Naokata Sumitomo

Author information

Moe Taki
Department of Pediatric Cardiology, Saitama Medical University International Medical Center
Shota Muraji
Department of Pediatric Cardiology, Saitama Medical University International Medical Center
Hitoshi Mori
Department of Pediatric Cardiology, Saitama Medical University International Medical Center
Taisuke Nabeshima
Department of Pediatric Cardiology, Saitama Medical University International Medical Center
Koich Toda
Department of Pediatric Cardiology, Saitama Medical University International Medical Center
Yoichi Iwamoto
Department of Pediatrics, Saitama Medical University
Satoshi Masutani
Department of Pediatrics, Saitama Medical University
Takuro Kojima
Department of Pediatric Cardiology, Saitama Medical University International Medical Center
Shigeki Yoshiba
Department of Pediatric Cardiology, Saitama Medical University International Medical Center
Toshiki Kobayashi
Department of Pediatric Cardiology, Saitama Medical University International Medical Center
Naokata Sumitomo
Department of Pediatric Cardiology, Saitama Medical University International Medical Center

Keywords: J wave syndrome, Ventricular fibrillation, Pilsicainide, Child

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2021 Volume 62 Issue 4 Pages 919-923

DOI https://doi.org/10.1536/ihj.20-661

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Abstract

An early repolarization (ER) pattern or J waves are considered to be a benign finding observed in the healthy population, however, it has been pointed out that the ER pattern seen in the inferolateral leads could be an independent risk factor for fatal arrhythmias. We present a pediatric case in which early repolarization syndrome (ERS) was suspected due to the presence of ER or J waves in the inferior leads, which eventually disappeared after the administration of pilsicainide. During the follow-up period, several fatal ventricular arrhythmias were recorded after implantation of a subcutaneous implantable cardiac defibrillator (S-ICD). This report describes the efficacy of S-ICDs in a child with an ER pattern after aborted sudden cardiac death.

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