Cardiac dysfunction was observed with transvaginal ultrasound in 12 fe
tuses at 13-17 weeks' gestation. Impaired contractility of the heart a
nd significant reduction of the left ventricular fractional shortening
were noted in these fetuses. Three of the fetuses also had supraventr
icular tachycardia. Many of the fetuses had cardiomegaly, oligohydramn
ios, a thick placenta, or associated cardiac and structural anomalies.
(C) 1997 John Wiley & Sons, Ltd.