Abstract
Long QT syndrome (LQTS) is a typically inherited ion channelopathy associated with ventricular tachyarrhythmias, cardiac arrest, or sudden death at any age, including intrauterine demise. Early diagnosis of LQTS in a fetus can facilitate treatment and screening to lower the risk of complications. The fetus can present with ventricular tachyarrhythmias, torsades de pointes, and function 2:1 atrioventricular block due to prolonged repolarization. Zidere et al (https://doi.org/10.1016/j.hrcr.2022.07.007) shared 4 cases in which fetal LQTS was diagnosed after screening with fetal heart rate during the second trimester.
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