Twin Pregnancy Monitoring in Nagpur
Twin pregnancies need more careful follow-up than singleton pregnancies. The most important first step is identifying whether the twins are dichorionic or monochorionic, because the scan schedule, risks and monitoring plan are different.
Twin pregnancy needs a planned scan calendar
The risk profile of twins changes depending on whether they share a placenta. Dichorionic twins usually have separate placentas, while monochorionic twins share a placenta and need closer surveillance for complications such as TTTS, TAPS and selective fetal growth restriction.
Dr. Kunda Shahane creates a structured twin pregnancy monitoring plan based on chorionicity, gestational age, fetal anatomy, growth pattern, Doppler, amniotic fluid and the mother’s health.
Chorionicity decides the monitoring pathway
Chorionicity means whether twins have separate placentas or share one placenta. It should be documented as early as possible.
Dichorionic twins
Usually each twin has a separate placenta. These pregnancies still need serial growth and wellbeing monitoring, but the risk of TTTS/TAPS is not the same as monochorionic twins.
Monochorionic twins
The twins share one placenta. They need closer surveillance from around 16 weeks for TTTS, TAPS, selective growth restriction, fluid imbalance and Doppler changes.
Monoamniotic twins
Rare and higher-risk because both babies share the same amniotic sac. These pregnancies need highly specialised fetal medicine and obstetric planning.
Why early chorionicity matters
The best time to document chorionicity is early pregnancy, especially around the 11–14 week scan. Later in pregnancy, chorionicity can be more difficult to confirm if early images or reports are not available.
Twin pregnancy monitoring schedule at a glance
The exact schedule is individualised. Monochorionic twins usually need more frequent scans than dichorionic twins.
| Pregnancy stage | Main scan / assessment | What Dr. Kunda checks | Why it matters |
|---|---|---|---|
| Early pregnancy | Viability Dating | Number of fetuses, heartbeat, gestational age, early pregnancy location and pregnancy dating. | Correct dating is essential for growth comparison, screening and later delivery planning. |
| 11–14 weeks | NT scan Chorionicity | Chorionicity, amnionicity, NT, early anatomy, nasal bone when appropriate, ductus venosus/tricuspid flow if indicated. | This is the key stage to classify twin type and start the correct surveillance pathway. |
| From 16 weeks in monochorionic twins | TTTS/TAPS screening | Fluid around each baby, bladder visibility, fetal growth, Doppler, MCA-PSV when indicated and signs of twin imbalance. | Monochorionic complications can develop quickly and need timely detection. |
| 18–22 weeks | Anomaly scan | Detailed anatomy of both babies, placenta, cord insertions, cervix, fetal heart views and twin-specific concerns. | Structural anomalies are assessed separately for Twin A and Twin B. |
| 20–24 weeks onwards | Growth trend Discordance | Estimated fetal weight of each twin, abdominal circumference, growth discordance, amniotic fluid and Doppler. | Twin growth is compared between babies and against expected twin growth trends. |
| Third trimester | Doppler BPP/NST | Growth, amniotic fluid, Doppler, fetal wellbeing, presentation of each baby and maternal complications. | Helps plan surveillance frequency, referral, admission if needed, and delivery timing discussion. |
| Any time if symptoms or abnormal scan | Urgent review | Reduced movements, pain, leaking, bleeding, high BP symptoms, sudden fluid difference, growth concern or abnormal Doppler. | Twin pregnancies can change faster, especially monochorionic twins; early review helps avoid delay. |
Important: do not use a singleton schedule for twins
Twin pregnancy monitoring must be customised. The scan interval depends on chorionicity, fetal growth, amniotic fluid, Doppler, maternal health and whether any complication has appeared.
Monochorionic twins need special attention
Monochorionic twins share one placenta. Because of placental connections between the babies, they are at risk of twin-to-twin transfusion syndrome, twin anemia-polycythemia sequence, selective fetal growth restriction and sudden fluid or Doppler changes.
This is why monochorionic twins need a planned surveillance pathway from the second trimester, not just occasional routine scans.
Detailed twin pregnancy assessment
Every visit should identify Twin A and Twin B clearly and compare both babies systematically.
Twin A / Twin B labelling
Position, presentation and placental location are documented so each baby can be followed consistently across scans.
Growth of each baby
BPD, HC, AC, FL and estimated fetal weight are measured separately for each twin, then compared for growth discordance.
Amniotic fluid around each twin
Fluid pockets are checked separately. Sudden difference in fluid can be important, especially in monochorionic twins.
Doppler assessment
Umbilical artery, MCA, ductus venosus or other Dopplers may be used depending on growth, fluid and fetal wellbeing.
Fetal heart review
Twin pregnancies may need careful cardiac views, and fetal echocardiography is advised when indicated.
Cervical length and preterm risk
Twins have higher risk of preterm birth. Cervical length assessment may be useful in selected cases.
Conditions monitored in twin pregnancy
The aim is early recognition, clear counselling and timely referral or intervention when needed.
TTTS
Twin-to-twin transfusion syndrome can occur in monochorionic twins and is monitored through fluid, bladder, growth and Doppler findings.
TAPS
Twin anemia-polycythemia sequence may need MCA Doppler assessment and specialist interpretation in monochorionic twins.
Selective FGR
One twin may grow significantly less than the other. Growth discordance and Doppler guide surveillance and counselling.
Preterm birth
Twin pregnancies have higher chance of earlier delivery, so cervix, symptoms and obstetric coordination are important.
When referral is urgent
Sudden fluid imbalance, absent bladder in one twin, major growth discordance, abnormal Doppler, suspected TTTS/TAPS, hydrops, reduced movements, bleeding, leaking or pain should not be delayed.
How twin pregnancy monitoring is planned at Mayflower
Confirm dating, number of babies and chorionicity
Early scan reports are reviewed. If not already documented, chorionicity and amnionicity are assessed carefully.
Create a twin-specific scan schedule
Dichorionic and monochorionic twins need different scan intervals. The plan is adjusted according to risk and findings.
Perform detailed fetal assessment
Both babies are assessed for anatomy, growth, fluid, Doppler, placental/cord findings and fetal heart views.
Screen for twin complications
TTTS, TAPS, selective FGR, fluid imbalance, discordant anomalies, cervix shortening and preterm birth risk are considered.
Coordinate with obstetric and neonatal teams
If required, the plan includes fetal therapy referral, admission, steroid timing, delivery planning or neonatal counselling.
When should you book a twin pregnancy scan?
As soon as twins are detected
Early confirmation of chorionicity is one of the most important steps in twin pregnancy care.
At 11–14 weeks
NT scan, early anatomy, chorionicity and pregnancy dating can be reviewed at this stage.
From 16 weeks in monochorionic twins
Regular surveillance is important to look for early signs of TTTS, TAPS or growth imbalance.
What to bring for the visit
Bring all previous scan reports and images, IVF records if applicable, NT/aneuploidy screening report, NIPT report if done, obstetric notes, blood pressure records, sugar records and medication list.
Dr. Kunda Shahane’s note on twin pregnancy
“The first question in twin pregnancy is not simply ‘are there two babies?’ The key question is whether the twins share a placenta. Once we know chorionicity, we can plan the correct scan schedule, monitor both babies separately, and look early for complications such as TTTS, TAPS and growth discordance.”
Twin pregnancy monitoring FAQs
Why is chorionicity important in twin pregnancy?
Chorionicity tells whether twins have separate placentas or share one placenta. Monochorionic twins need closer monitoring because placental sharing can lead to TTTS, TAPS and selective growth restriction.
When should chorionicity be checked?
Chorionicity is best assessed early, especially around the 11–14 week scan. If early reports are not available, a fetal medicine specialist may still try to assess the placenta, membrane and twin features.
How often do twins need ultrasound?
The frequency depends on chorionicity and complications. Dichorionic twins usually need serial growth monitoring. Monochorionic twins usually need more frequent surveillance from around 16 weeks, often every 2 weeks.
What is TTTS?
Twin-to-twin transfusion syndrome is a complication of monochorionic twins where blood flow between twins becomes unbalanced through shared placental connections. It is monitored by fluid, bladder, growth and Doppler findings.
What is TAPS?
Twin anemia-polycythemia sequence is a monochorionic twin complication where one twin may become anemic and the other may have thicker blood. MCA Doppler can help screen selected cases.
Do all twin pregnancies need fetal echo?
Not all twins need fetal echo, but it may be advised when heart views are incomplete, a heart concern is seen, twins are monochorionic, IVF pregnancy is present, or your doctor recommends detailed cardiac review.
Can one twin grow less than the other?
Yes. Growth discordance can occur in twin pregnancy. The degree of difference, Doppler findings, amniotic fluid and chorionicity decide the seriousness and follow-up plan.
Is twin pregnancy always high-risk?
Twin pregnancy is generally considered higher-risk than singleton pregnancy because of increased chances of preterm birth, growth issues, high blood pressure, diabetes and twin-specific complications.
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Need twin pregnancy monitoring in Nagpur?
Book a twin pregnancy scan and counselling appointment with Dr. Kunda Shahane at Mayflower Fetal Medicine & High-Risk Pregnancy Centre, Dhantoli, Nagpur. Carry your early scan report so chorionicity, dating and the follow-up pathway can be reviewed correctly.
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