Antenatal Therapy for Fetal Supraventricular Tachyarrhythmias: Multicenter Trial

Autor: Takekazu, Miyoshi, Yasuki, Maeno, Toshimitsu, Hamasaki, Noboru, Inamura, Satoshi, Yasukochi, Motoyoshi, Kawataki, Hitoshi, Horigome, Hitoshi, Yoda, Mio, Taketazu, Masaki, Nii, Akiko, Hagiwara, Hitoshi, Kato, Wataru, Shimizu, Isao, Shiraishi, Heima, Sakaguchi, Keiko, Ueda, Shinji, Katsuragi, Haruko, Yamamoto, Haruhiko, Sago, Tomoaki, Ikeda
Rok vydání: 2019
Předmět:
Zdroj: Journal of the American College of Cardiology. 74(7)
ISSN: 1558-3597
Popis: Standardized treatment of fetal tachyarrhythmia has not been established.This study sought to evaluate the safety and efficacy of protocol-defined transplacental treatment for fetal supraventricular tachycardia (SVT) and atrial flutter (AFL).In this multicenter, single-arm trial, protocol-defined transplacental treatment using digoxin, sotalol, and flecainide was performed for singleton pregnancies from 22 to 37 weeks of gestation with sustained fetal SVT or AFL ≥180 beats/min. The primary endpoint was resolution of fetal tachyarrhythmia. Secondary endpoints were fetal death, pre-term birth, and neonatal arrhythmia. Adverse events (AEs) were also assessed.A total of 50 patients were enrolled at 15 institutions in Japan from 2010 to 2017; short ventriculoatrial (VA) SVT (n = 17), long VA SVT (n = 4), and AFL (n = 29). One patient with AFL was excluded because of withdrawal of consent. Fetal tachyarrhythmia resolved in 89.8% (44 of 49) of cases overall and in 75.0% (3 of 4) of cases of fetal hydrops. Pre-term births occurred in 20.4% (10 of 49) of patients. Maternal AEs were observed in 78.0% (39 of 50) of patients. Serious AEs occurred in 1 mother and 4 fetuses, thus resulting in discontinuation of protocol treatment in 4 patients. Two fetal deaths occurred, mainly caused by heart failure. Neonatal tachyarrhythmia was observed in 31.9% (15 of 47) of neonates within 2 weeks after birth.Protocol-defined transplacental treatment for fetal SVT and AFL was effective and tolerable in 90% of patients. However, it should be kept in mind that serious AEs may take place in fetuses and that tachyarrhythmias may recur within the first 2 weeks after birth.
Databáze: OpenAIRE