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Journal of Ultrasound in Medicine, Vol 14, Issue 2 101-108, Copyright © 1995 by American Institute of Ultrasound in Medicine

JOURNAL ARTICLE

Fetal arterial Doppler studies in twin-twin transfusion syndrome

K. Hecher, Y. Ville and K. H. Nicolaides
Harris Birthright Research Centre for Fetal Medicine, King's College Hospital Medical School, London, England.

This cross-sectional study investigates the circulatory profile of the donor and recipient fetuses in pregnancies with twin-twin transfusion syndrome manifested by acute polyhydramnios during the second trimester of pregnancy. Doppler investigations of the umbilical arteries and of the fetal descending thoracic aortas and middle cerebral arteries were performed in both fetuses of 27 pregnancies with twin-twin transfusion syndrome at 18 to 25 (mean, 21.7) weeks' gestation. Significant differences from normal values were increased umbilical artery pulsatility index and decreased aortic mean velocity in both donor and recipient fetuses, decreased middle cerebral artery pulsatility index in recipients and decreased middle cerebral artery mean velocity in donors. Increased umbilical artery pulsatility index in some donor and recipient fetuses may be the consequence of abnormal placental development and polyhydramnios-related compression, respectively. Doppler findings in the fetal circulation are compatible with hypovolemia in the donor and hypervolemia with congestive heart failure in the recipient.


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