Effects of azithromycin on ventricular repolarization in children with COVID-19

Azithromycin is used to treat pediatric COVID-19 patients. It can also prolong the QT interval in adults. This study assessed the effects of azithromycin on ventricular repolarization in children with COVID-19. The study prospectively enrolled children with COVID-19 who received azithromycin between...

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Published inRevista portuguesa de cardiologia Vol. 41; no. 7; pp. 551 - 556
Main Authors Sunkak, Suleyman, Argun, Mustafa, Celik, Binnaz, Tasci, Onur, Ozturk, Agah Bahadir, Inan, Dogan Bahadir, Dogan, Murat
Format Journal Article
LanguageEnglish
Published Elsevier España, S.L.U 01.07.2022
Sociedade Portuguesa de Cardiologia. Published by Elsevier España, S.L.U
Elsevier
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Summary:Azithromycin is used to treat pediatric COVID-19 patients. It can also prolong the QT interval in adults. This study assessed the effects of azithromycin on ventricular repolarization in children with COVID-19. The study prospectively enrolled children with COVID-19 who received azithromycin between July and August 2020. An electrocardiogram was performed before, one, three, and five days post-treatment. Using ImageJ®, the following parameters were measured: QT max, QT min, Tp-e max, and Tp-e min. The parameters QTc max, QTc min, Tp-ec max, Tp-ec min, QTcd, Tp-ecd, and the QTc/Tp-ec ratio were calculated using Bazett's formula. The study included 105 pediatric patients (mean age 9.8±5.3 years). The pretreatment heart rate was higher than after treatment (before 92 [79–108]/min vs. Day 1 82 [69–108)]/min vs. Day 3 80 [68–92.2]/min vs. Day 5 81 [70–92]/min; p=0.05). Azithromycin does not affect the ventricular repolarization parameters on ECG in pediatric COVID-19 cases. A azitromicina (AZ) é utilizada no tratamento da COVID-19 em pediatria. Como este fármaco pode prolongar o intervalo QT nos adultos, este estudo avaliou os efeitos da AZ na repolarização ventricular de crianças com COVID-19. Este estudo prospetivo incluiu crianças com COVID-19 que foram tratadas com AZ em julho-agosto 2020. Foi efetuado um eletrocardiograma (ECG) antes e um, 3 e 5 dias após o tratamento. Utilizando ImageJ ®, foram medidos os parâmetros seguintes: QT max, QT min, Tp-e max, e Tp-e min. Os parâmetros QTc min, Tp-ec max, Tp-ec min, QTcd, Tp-ecd e QTc/Tp-ec ratio foram calculados utilizando a fórmula Bazett. O estudo incluiu 105 doentes pediátricos (idade média 9,8±5,3 anos). A frequência cardíaca no pré-tratamento foi mais elevada do que após o tratamento (antes 92 [79–108]/min versus dia 1 82 [69–108)]/min versus dia 3 80 [68–92,2]/min versus dia 5 81 [70–92]/min; p=0,05). A AZ não afeta os parâmetros de repolarização ventricular no ECG nos casos pediátricos da COVID-19.
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ISSN:0870-2551
2174-2030
DOI:10.1016/j.repc.2021.04.008