• Noninvasive antepartum fetal surveillance for high-risk pregnancies (e.g., maternal diabetes, hypertension, FGR, post-term)
• Second-tier evaluation of fetal well-being when a Non-Stress Test (NST) is non-reactive
• Assessing the immediate risk of acute or chronic fetal asphyxia to guide timing of delivery

Fetal biophysical activities are controlled by central nervous system centers that mature at different gestational ages. Under hypoxia or acidosis, acute markers (heart rate reactivity, then breathing) are suppressed first to conserve embryonic oxygen for vital organs. Chronic markers (amniotic fluid volume, regulated by fetal renal perfusion and urine output) reflect long-term placental insufficiency.

• Excellent negative predictive value (>99%) for fetal death within 1 week following a normal score
• Graduated 10-point scoring allows for tailored management rather than blunt binary decision-making

• High false-positive rate for low scores primarily due to normal fetal rest/sleep states (which can comfortably last up to 40 minutes)
• Scores can be artificially suppressed by maternal medications (narcotics, magnesium sulfate, corticosteroids)
• Requires an experienced sonographer and significant machine time (often 30+ minutes observing a sleeping fetus)

• Indicates a very low risk of fetal asphyxia
• Continue routine management and repeat surveillance per high-risk protocols (usually weekly or biweekly depending on maternal diagnosis)

• Assess amniotic fluid constituent: If the lost points are due to oligohydramnios (AFV=0), placental insufficiency is likely; consider delivery if at term
• If fluid is normal and points were lost on acute parameters (breathing/tone), maintain surveillance
• Repeat the BPP in 12–24 hours, or consider expediting delivery if other clinical factors warrant

• High probability of fetal asphyxia and acidosis
• Strongly consider immediate delivery (via expedited induction or cesarean section), factoring in gestational age and lung maturity
• Continuous electronic fetal monitoring is mandatory while pending delivery

Invented by Dr. Frank Manning and his team in 1980. The model initiated a major shift in fetal surveillance, moving from single-modality testing (like relying entirely on the NST) to a comprehensive multi-parametric approach, which drastically reduced the false-positive rates for intervening on fetal distress.