This represents the first documented case of fetal ventricular tachycardia in a baby subsequently diagnosed with long QT syndrome.
We report a case of a fetus presenting intermittent ventricular tachycardia during mid-gestation, whose mother had long QT syndrome. The arrhythmia disappeared spontaneously, and the electrocardiogram of the baby after birth showed prolonged QTc. As far as we are aware, this is the first case in which ventricular tachycardia was documented during fetal life in a baby with long QT syndrome.
Yamada et al. (1998) studied this question.