Biophysical profile

Biophysical profile

A biophysical profile is a prenatal ultrasound evaluation of fetal wellbeing, involving a scoring system. It is often done when a non-stress test is non reactive, or for other obstetrical indications.

The biophysical profile (BPP) has 5 components: 4 ultrasound (US) assessments and a nonstress test (NST). The US assessments are: amniotic fluid index, fetal tone, fetal activity, and fetal breathing movements. Each ultrasound assessment is graded either 0 or 2 points, and then added up to yield a number between 0 and 8. A BPP of 6 to 8 is generally considered reassuring. A BPP normally is not performed before the second half of a pregnancy: fetal breathing movements do not occur in the first half.


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