Key result
Pulsed color Doppler ultrasound at 30 gestational weeks successfully identified reversed-pulsatile blood flow in the umbilical vessels and artery-artery anastomosis in an acardiac twin pregnancy.
Case Report (n=1)
Pulsed color Doppler ultrasound is effective in diagnosing the characteristic reversed umbilical blood flow and vascular anastomoses in acardiac twin pregnancies.
May aid acardiac twin diagnosis; hypothesis-generating and requires prospective validation before practice change.
Prenatal diagnosis of an acardiac twin pregnancy was performed. At 30 gestational weeks, pulsed color Doppler ultrasound revealed polyhydramnios, reversed-pulsatile blood flow in the umbilical artery and vein of the acardiac twin, and artery-artery anastomosis on the placental surface. The total cardiac dimension, maximum blood flow velocity of the ascending aorta and the pulmonary artery in the alive twin were in the normal range.
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Ishimatsu et al. (1993) conducted a case report in Acardiac twin pregnancy (n=1). Color and pulsed Doppler ultrasonography was evaluated on Detection of reversed umbilical blood flow and artery-artery anastomosis. Pulsed color Doppler ultrasound at 30 gestational weeks successfully identified reversed-pulsatile blood flow in the umbilical vessels and artery-artery anastomosis in an acardiac twin pregnancy.
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