Obstetric Scan for Biophysical Profile (bpp)

Purpose of the BPP Test

• Monitors fetal breathing, movement, tone, and amniotic fluid levels
• Adds nonstress test (NST) to measure heart-rate patterns
• Detects early signs of fetal distress before complications arise

Cadabams Diagnostics Expertise

• Radiologists trained in fetal imaging
• State-of-the-art 3D/4D ultrasound machines for crystal-clear images
• Same-day reporting and direct consultation with OB-GYNs when needed

Definition and Technology Used

A biophysical profile combines ultrasound imaging with cardiotocography (NST) to score five key parameters. Each parameter receives 0 or 2 points, for a maximum score of 10/10.

• Ultrasound waves create real-time images of your baby.
• Doppler flow studies may be added if blood-flow concerns exist.

BPP Ultrasound vs Nonstress Test

Complete BPP (Ultrasound + NST)

• 10-point scale (5 parameters × 2 points each)
• Preferred for high-risk pregnancies

Modified BPP (Ultrasound Only)

• 8-point scale (excludes NST)
• Used when time-sensitive or NST equipment unavailable

• Monitor overdue pregnancies to decide on induction
• Track diabetes or hypertension impacts on placental function
• Follow-up abnormal Doppler or growth scans

Gestational Age Guidelines

• 28–42 weeks: Optimal window for testing
• Weekly BPP after 37 weeks if high-risk
• Bi-weekly for moderate-risk cases

High-Risk Pregnancy Indicators

• Maternal diabetes or hypertension
• Overdue pregnancy >40 weeks
• Previous stillbirth or IUGR history
• Decreased fetal movements reported by mother

• Early detection of fetal distress prevents stillbirth
• Non-invasive reassurance for anxious parents
• Guides timing of delivery—vaginal vs C-section

• Oligohydramnios: Low amniotic fluid increasing cord compression risk
• Fetal growth restriction (IUGR): Baby smaller than gestational age
• Placental insufficiency: Reduced nutrient & oxygen transfer

Clothing & Comfort Tips

• Wear two-piece outfit for easy belly exposure
• Bring a support person for reassurance

Scheduling with Full Bladder Notes

• Drink 500 ml water 30 min before if <34 weeks—improves image clarity
• Empty bladder if >34 weeks to enhance comfort

1. Doctor’s referral specifying BPP urgency
2. Previous scan reports (growth, Doppler, or anomaly scans)

Singleton & Twin Pregnancies

• Both eligible, though twin BPP takes longer (two babies)

Contra-indications

• Active labor or ruptured membranes—test postponed
• Maternal infection requiring isolation

1. Check-in at Cadabams Diagnostics front desk
2. Lie semi-reclined on ultrasound couch
3. Warm gel applied to abdomen
4. Ultrasound probe captures 30-minute video clip
5. NST sensors placed on belly to record heart-rate patterns
6. Radiologist reviews images immediately; results shared same day

• Hydrate well 2 hours prior—improves amniotic fluid picture
• Have a light snack 15 min before scan to wake baby
• Take routine medications unless your doctor advises otherwise

Common Concerns

• No radiation exposure—ultrasound is safe
• Mild discomfort from transducer pressure only

False-Positive Scenarios

• Sleeping baby may lower movement count; sugary snack or gentle stimulation resolves this.
• Dehydration can reduce amniotic fluid; re-scan after hydration often normalizes scores.