Should absent or reversed end-diastolic velocity develop (indicating worsening placental vascular resistance and possible stillbirth), and if one or more components of the biophysical profile
score are lost, delivery is warranted.
A modified biophysical profile
, which combines measurement of amniotic fluid volume with nonstress testing, is preferred because, unlike a nonstress test alone, it includes a chronic marker of fetal status: amniotic fluid volume.
She uses the same plan if the amniotic fluid index is less than 5, fetal heart rate testing is nonreassuring, the biophysical profile
score is below 6, or little or no growth occurs over a 2- to 4-week interval.
A limited examination is "appropriate and desirable," according to ACOG, in the assessment of amniotic fluid volume, fetal biophysical profile
testing, ultrasound-guided amniocentesis, external cephalic version, confirmation of fetal presentation, location of the placenta in antepartum hemorrhage, and confirmation of fetal life or death.
Clinical management of the pregnancies was based on the modified biophysical profile
only two exceptions: Doppler studies showing reverse umbilical artery blood flow or venous pulsations in the umbilical vein.
The biophysical profile
may be affected by prematurity, but can still be reliably used for evaluating preterm fetuses whenever there is a nonreactive nonstress test and a positive contraction stress test, Dr.