A biophysical profile (BPP) is performed on a fetus at 34 weeks. Which set of parameters constitutes the five components scored in the standard BPP?

• A Fetal breathing movements, gross body movements, middle cerebral artery Doppler, amniotic fluid volume, and non-stress test
• B Fetal heart rate variability, umbilical artery Doppler, fetal tone, amniotic fluid volume, and fetal breathing movements
• C Fetal breathing movements, gross body movements, fetal tone, amniotic fluid volume, and non-stress test ✓
• D Fetal tone, gross body movements, ductus venosus waveform, amniotic fluid volume, and non-stress test

Explanation

The BPP combines four ultrasound variables (fetal breathing movements, gross body movements, fetal tone, and amniotic fluid volume) with the non-stress test, each scored 0 or 2 for a maximum of 10. The acute variables reflect fetal CNS status while the amniotic fluid volume reflects chronic placental function. Doppler indices such as umbilical artery or MCA PI are separate surveillance tools and are not part of the BPP score.

Reference: Williams Obstetrics, 26th ed.

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Written and medically reviewed by the StethoPrep medical team.