<prompt> In current obstetrics practice what is the best test for monitoring sensitized Rh negative mother?Biophysical profileMiddle cerebral aery Doppler wave formsFetal blood samplingAmniotic fluid spectrophotometry  <response>: Best test for monitoring senstitized Rh negative mother isMiddle cerebral aery doppler wave forms Serial Doppler study of middle cerebral aery MCA-peak systolic velocity PSV is the mainstay to assess fetal anemia. A value 1.5 multiples of the median MOMs for the corresponding gestational age, predicts moderate to severe fetal anemia. This value between 24 weeks and 35 weeks of gestation, is an indication for cordocentesis and fetal transfusion 