A Biophysical Profile, or BPP scan, is a structured fetal wellbeing assessment usually done in the third trimester. It combines ultrasound observation of fetal breathing, movements, tone and amniotic fluid, with NST when required, to help your doctor decide whether the baby is reassuring or needs closer monitoring.
A BPP score is useful, but it should not be read in isolation. The same score can mean different things depending on gestational age, fetal growth, amniotic fluid, Doppler findings, NST result, maternal blood pressure, diabetes, previous pregnancy history and fetal movement pattern.
At Mayflower, Dr. Kunda Shahane interprets the BPP along with the complete pregnancy picture, so the report leads to a clear plan — reassurance, repeat testing, Doppler, admission, steroid planning or delivery discussion when required.
A full BPP combines four ultrasound observations with fetal heart rate monitoring through NST when required.
The scan observes rhythmic breathing-like movements of the fetal chest or diaphragm during the examination period.
Gross body or limb movements are observed. The baby may be awake or asleep, so context matters.
Tone is assessed by extension and return of a limb, hand opening/closing or other flexion-extension activity.
Liquor is checked using the deepest pocket or AFI, depending on the clinical situation and reporting protocol.
NST, or non-stress test, assesses fetal heart rate reactivity. Some centres perform a full BPP with NST, while some use a modified BPP depending on the indication, gestational age and available monitoring.
Each component usually scores 2 if reassuring and 0 if absent or not meeting criteria during the observation period.
| BPP component | Reassuring observation | Why Dr. Kunda checks it |
|---|---|---|
| NST / fetal heart rate | Reactive fetal heart rate pattern when NST is part of the assessment. | Shows short-term fetal nervous system and oxygenation response. |
| Fetal breathing movements | Breathing-like movements seen during the observation window. | Useful acute marker of fetal wellbeing, but may be affected by sleep cycles or medicines. |
| Gross fetal movements | Multiple body or limb movements during the scan period. | Movement pattern helps assess current fetal activity and alertness. |
| Fetal tone | Flexion-extension movement, such as opening/closing hand or limb movement returning to flexion. | Tone is another acute marker of neurological wellbeing. |
| Amniotic fluid | Adequate deepest vertical pocket or AFI as per reporting protocol. | Amniotic fluid reflects longer-term placental function and fetal urine production. |
| Total score | 8–10 6 ≤4 | 8–10 is generally reassuring. 6 is borderline/equivocal. 4 or less is concerning and needs immediate clinical interpretation. |
A BPP score is never interpreted without the pregnancy context. For example, the meaning changes if the pregnancy is preterm, if amniotic fluid is low, if Doppler is abnormal, if the mother has preeclampsia, or if fetal growth restriction is present.
BPP is usually advised when your obstetrician or fetal medicine specialist wants a more structured check of fetal wellbeing, especially in the third trimester or in a pregnancy that needs closer surveillance.
It is often combined with growth scan, Doppler and NST depending on the reason for referral.
If movements feel less than usual, BPP may be used along with NST and clinical evaluation to assess fetal wellbeing.
Pregnancies with hypertension or preeclampsia may need repeated fetal surveillance, including growth, Doppler and BPP.
Gestational or pre-existing diabetes may require third-trimester monitoring depending on sugar control and fetal growth.
In IUGR/FGR, BPP may be interpreted together with Doppler, fetal growth trend and amniotic fluid.
Oligohydramnios or polyhydramnios may need repeat wellbeing scans and closer obstetric follow-up.
When pregnancy crosses the expected date, doctors may advise fetal surveillance to help guide timing of delivery.
The scan is non-invasive. You lie comfortably while the baby’s activity and amniotic fluid are observed.
Your reason for referral is reviewed — reduced movements, diabetes, blood pressure, IUGR, Doppler concern, post-date pregnancy or previous high-risk history.
Fetal breathing, body movements, tone and amniotic fluid are assessed during the observation period.
If NST is part of your plan, fetal heart rate monitoring is performed and interpreted along with ultrasound findings.
Dr. Kunda explains whether the result is reassuring, needs repeat testing, needs Doppler/growth correlation or needs obstetric action.
The next step may be routine follow-up, repeat BPP, Doppler, admission, medication/steroid planning or delivery discussion depending on the situation.
Carry growth scan, Doppler, NST, anomaly scan, fetal echo, blood pressure records and diabetes/sugar records if applicable.
Do not fast unless specifically told by your doctor. Many babies are more active after the mother has eaten normally.
Sometimes the baby may be asleep. The scan may take longer, or repeat observation may be needed before interpretation.
If you feel significantly reduced fetal movements, do not wait only for a routine appointment. Contact your obstetrician or nearest hospital immediately. BPP is helpful, but urgent clinical assessment comes first when movements are clearly reduced.
BPP tells us about current fetal activity and amniotic fluid. Growth and Doppler tell us about placental function and fetal circulation.
Useful when fetal weight, abdominal circumference or growth trend needs reassessment.
Important in IUGR, high blood pressure, low fluid or placental insufficiency.
Helps combine fetal heart rate reactivity with ultrasound wellbeing markers.
“A BPP scan is not just a score written on paper. It is a snapshot of how the baby is behaving inside the womb at that time. I always interpret BPP together with growth, Doppler, amniotic fluid, NST and the mother’s medical condition so that families receive a clear and safe plan.”
No. NST checks fetal heart rate reactivity. BPP includes ultrasound assessment of fetal breathing, movements, tone and amniotic fluid, and may include NST as one of the five components.
BPP is usually done in the third trimester, especially when the pregnancy is high-risk or when fetal wellbeing needs structured assessment.
A score of 8 out of 10 or 10 out of 10 is generally reassuring. A lower score requires interpretation by the treating doctor based on the full clinical context.
Babies have sleep cycles. If activity is low during the scan, observation may take longer or repeat assessment may be advised depending on the situation.
No test can guarantee complete safety or absence of problems. BPP helps assess current fetal wellbeing, but it must be combined with clinical judgment, growth, Doppler and obstetric care.
No. BPP and Doppler answer different questions. Doppler assesses blood flow and placental circulation, while BPP assesses fetal activity and amniotic fluid.
No. BPP is non-invasive and usually involves ultrasound observation and fetal heart rate monitoring when NST is included.
Yes. Clearly reduced fetal movements should be discussed urgently with your obstetrician or nearest hospital. Do not wait only for a routine scan slot.
Book a Biophysical Profile / BPP scan appointment with Dr. Kunda Shahane at Mayflower Fetal Medicine & High-Risk Pregnancy Centre, Dhantoli, Nagpur. Carry your previous growth, Doppler, NST and obstetric records for proper interpretation.
Mayflower Fetal Medicine & High-Risk Pregnancy Centre, Dhantoli, Nagpur, provides fetal ultrasound, prenatal diagnosis, fetal echocardiography, Doppler studies, genetic counseling and high-risk pregnancy care under Dr. Kunda Shahane.

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