Mexiletine infusion challenge test for neonatal long QT syndrome with 2:1 atrioventricular block

Abstract For applying a genotype‐based treatment in neonatal long QT syndrome (LQTS), early detection of the genotype becomes an important issue. We report a case of a neonate with LQTS type 3 that presented with 2:1 atrioventricular block and underwent a mexiletine infusion challenge test, and achi...

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Main Authors: Hajime Okuwaki, Yoshiaki Kato, Lisheng Lin, Yoshihiro Nozaki, Miho Takahashi‐Igari, Hitoshi Horigome
Format: Article
Language:English
Published: Wiley 2019-08-01
Series:Journal of Arrhythmia
Subjects:
Online Access:https://doi.org/10.1002/joa3.12209
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author Hajime Okuwaki
Yoshiaki Kato
Lisheng Lin
Yoshihiro Nozaki
Miho Takahashi‐Igari
Hitoshi Horigome
author_facet Hajime Okuwaki
Yoshiaki Kato
Lisheng Lin
Yoshihiro Nozaki
Miho Takahashi‐Igari
Hitoshi Horigome
author_sort Hajime Okuwaki
collection DOAJ
description Abstract For applying a genotype‐based treatment in neonatal long QT syndrome (LQTS), early detection of the genotype becomes an important issue. We report a case of a neonate with LQTS type 3 that presented with 2:1 atrioventricular block and underwent a mexiletine infusion challenge test, and achieved shortening of the QTc and 1:1 atrioventricular conduction. The mexiletine infusion challenge test was helpful to make an early detection of the genotype of the LQTS and predicted the drug efficacy in a neonatal patient.
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spelling doaj.art-33333e5217ce4bdbb45e5a66927420ed2022-12-21T18:39:37ZengWileyJournal of Arrhythmia1880-42761883-21482019-08-0135468568810.1002/joa3.12209Mexiletine infusion challenge test for neonatal long QT syndrome with 2:1 atrioventricular blockHajime Okuwaki0Yoshiaki Kato1Lisheng Lin2Yoshihiro Nozaki3Miho Takahashi‐Igari4Hitoshi Horigome5Department of Child Health, Faculty of Medicine University of Tsukuba Tsukuba JapanDepartment of Child Health, Faculty of Medicine University of Tsukuba Tsukuba JapanDepartment of Child Health, Faculty of Medicine University of Tsukuba Tsukuba JapanDepartment of Child Health, Faculty of Medicine University of Tsukuba Tsukuba JapanDepartment of Child Health, Faculty of Medicine University of Tsukuba Tsukuba JapanDepartment of Child Health, Faculty of Medicine University of Tsukuba Tsukuba JapanAbstract For applying a genotype‐based treatment in neonatal long QT syndrome (LQTS), early detection of the genotype becomes an important issue. We report a case of a neonate with LQTS type 3 that presented with 2:1 atrioventricular block and underwent a mexiletine infusion challenge test, and achieved shortening of the QTc and 1:1 atrioventricular conduction. The mexiletine infusion challenge test was helpful to make an early detection of the genotype of the LQTS and predicted the drug efficacy in a neonatal patient.https://doi.org/10.1002/joa3.12209atrioventricular blocklong QT syndromemexiletineneonate
spellingShingle Hajime Okuwaki
Yoshiaki Kato
Lisheng Lin
Yoshihiro Nozaki
Miho Takahashi‐Igari
Hitoshi Horigome
Mexiletine infusion challenge test for neonatal long QT syndrome with 2:1 atrioventricular block
Journal of Arrhythmia
atrioventricular block
long QT syndrome
mexiletine
neonate
title Mexiletine infusion challenge test for neonatal long QT syndrome with 2:1 atrioventricular block
title_full Mexiletine infusion challenge test for neonatal long QT syndrome with 2:1 atrioventricular block
title_fullStr Mexiletine infusion challenge test for neonatal long QT syndrome with 2:1 atrioventricular block
title_full_unstemmed Mexiletine infusion challenge test for neonatal long QT syndrome with 2:1 atrioventricular block
title_short Mexiletine infusion challenge test for neonatal long QT syndrome with 2:1 atrioventricular block
title_sort mexiletine infusion challenge test for neonatal long qt syndrome with 2 1 atrioventricular block
topic atrioventricular block
long QT syndrome
mexiletine
neonate
url https://doi.org/10.1002/joa3.12209
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