Abstract
The purpose of this oration is to discuss the modality of highly specialized Intra
vascular fetal blood transfusion and its various sites to perform fetal blood transfusion
with the role of middle cerebral artery-peak systolic velocity (MCA-PSV), as measured
by Doppler ultrasound, in managing fetal anemia in Rh-alloimmunized pregnancies. Intra-uterine
fetal blood transfusion was performed in such anemic fetuses to tide over the crisis
of fetal immaturity till considered fit for extra-uterine survival. Rh-alloimmunized
pregnancies with or without hydrops reporting to our tertiary care institute from
January, 2005 to December, 2015 were screened by Doppler ultrasound to estimate MCA-PSV
to detect fetal anemia. During follow-up, if the fetus developed MCA-PSV values more
than 1.5 MoM for the gestational age, fetal blood sampling through cordocentesis was
performed to confirm fetal anemia. This was followed by intra-uterine fetal blood
transfusion to all the anemic fetuses at the same sitting. The neonatal outcome was
evaluated by recording gestational age at the time of delivery, duration of gestational
time gained, and need for blood transfusion in the neonatal period. A total of 226
Rh-alloimmunized pregnancies were evaluated. Three hundred ninety six intra-uterine
fetal blood transfusions were performed. In their neonatal period, 137 neonates received
blood transfusion. Intrauterine fetal death occurred in 11 fetuses out of which 7
were grossly hydropic fetus. Favorable neonatal outcome was recorded in the rest including
42 hydropic fetuses. The clinical outcome of these pregnancies justifies the use of
Doppler studies of MCA-PSV in detecting fetal anemia as these were found to correlate
well. Intra-uterine fetal blood transfusion in the anemic fetuses is the only hope
of prolonging pregnancy salvaging such fetuses.
Keywords
Intra-uterine fetal blood transfusion - Rh-alloimmunization - hemolytic disease of
fetus and newborn - fetal anemia, MCA-PSV - cordocentesis, neonatal outcome