Prenatal diagnosis of long QT syndrome with the superior vena cava–aorta Doppler approach

We describe a fetus at 36 weeks with long QT syndrome presenting with variable types of atrioventricular blocks, ventricular premature beats, and torsades de pointes. All these diagnoses were made with the superior vena cava–aorta Doppler approach and confirmed with postnatal electrocardiography.