Twin anemia-polycythemia sequence

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Figer-1

📄 Report Sample Line- 00
The a monochorionic diamniotic twin pregnancy, Doppler sonography demonstrates significant intertwin discordance in middle cerebral artery peak systolic velocities (MCA-PSV). The donor twin shows elevated MCA-PSV (>1.5 MoM), consistent with fetal anemia, while the recipient twin demonstrates decreased MCA-PSV (<1.0 MoM), suggestive of fetal polycythemia. No evidence of amniotic fluid discordance or visible vascular anastomoses is noted. These findings are diagnostic of Twin Anemia-Polycythemia Sequence (TAPS), a chronic form of feto-fetal transfusion without oligohydramnios-polyhydramnios sequence.


Conclussion: 📋 Findings are consistent with Twin Anemia-Polycythemia Sequence (TAPS) in a monochorionic diamniotic twin pregnancy, as evidenced by significant discordance in MCA-PSV values between twins. The donor twin shows Doppler features of fetal anemia, and the recipient twin demonstrates features of fetal polycythemia. No amniotic fluid discordance is observed.
Recommendation: Serial Doppler surveillance of MCA-PSV and fetal growth is advised to monitor progression.

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Note: Select English to answer in English, या हिंदी चुनें तो प्रश्नों के उत्तर हिंदी में दीजिए।

1. TAPS occurs in which type of twin pregnancies? 1. TAPS किस प्रकार की ट्विन गर्भधारण में होता है?
A. Monochorionic twins (usually)
B. Dichorionic twins
C. Triplet pregnancies only
D. Any pregnancy with maternal anemia

2. Primary mechanism behind TAPS is: 2. TAPS के पीछे प्राथमिक तंत्र क्या है?
A. Chronic slow transfusion through small placental anastomoses causing anemia in one twin and polycythemia in the other
B. Large acute hemorrhage between twins
C. Maternal-fetal blood mixing at delivery only
D. Genetic blood disorders in both twins

3. Which ultrasound/Doppler test is most useful to screen for fetal anaemia in TAPS? 3. TAPS में भ्रूणीय एनीमिया की स्क्रीनिंग के लिए कौन सा अल्ट्रासाउंड/डॉपलर परीक्षण सबसे उपयोगी है?
A. Middle cerebral artery peak systolic velocity (MCA-PSV)
B. Maternal uterine artery Doppler
C. Fetal echocardiography only
D. Amniotic fluid index alone

4. Typical amniotic fluid volumes in classic TAPS presentation are: 4. क्लासिक TAPS प्रस्तुति में सामान्यतः अम्नियोटिक द्रव की मात्रा कैसी रहती है?
A. Usually normal liquor volumes (no oligo–poly sequence)
B. Oligohydramnios in donor and polyhydramnios in recipient always
C. Large cervical incompetence
D. Always anhydramnios

5. Which clinical setting increases risk of post-laser TAPS? 5. कौन सा क्लिनिकल सेटिंग पोस्ट-लेज़र TAPS का जोखिम बढ़ाता है?
A. After fetoscopic laser for TTTS (selective occlusion of large anastomoses may leave small ones)
B. After uncomplicated vaginal delivery
C. After maternal transfusion
D. After cesarean for transverse lie

6. Which finding on MCA-PSV suggests fetal anaemia? 6. MCA-PSV पर कौन सा खोज भ्रूणीय एनीमिया का सुझाव देती है?
A. Elevated MCA-PSV (above gestation-specific threshold)
B. Severely reduced MCA-PSV only
C. No change in MCA-PSV
D. Maternal heart rate change

7. Best diagnostic test to confirm TAPS antenatally (definitive)? 7. गर्भकाल में TAPS की पुष्टि (निश्चित) के लिए सर्वश्रेष्ठ डायग्नोस्टिक परीक्षण कौन सा है?
A. Fetal blood sampling (cordocentesis) showing discordant hemoglobin/hematocrit
B. Maternal blood count only
C. Amniocentesis for karyotype
D. Chest X-ray

8. Which antenatal management may be offered for severe TAPS? 8. गंभीर TAPS के लिए कौन सा गर्भकालीन प्रबंधन प्रदान किया जा सकता है?
A. Intrauterine transfusion for anemic twin, partial exchange transfusion for polycythaemic twin, or fetoscopic laser in select cases
B. Immediate induction at 20 weeks only
C. Maternal bed rest only
D. No antenatal options exist

9. Long-term concerns for survivors of antenatal TAPS include: 9. गर्भकालीन TAPS के सर्वाइवर्स के लिए दीर्घकालिक चिंताएँ क्या हो सकती हैं?
A. Neurodevelopmental impairment in some cases (risk varies with severity and treatment)
B. Always normal outcomes with no risk
C. Guaranteed cardiac agenesis
D. Only maternal complications

10. Screening schedule for MCA-PSV in monochorionic twins to detect TAPS post-laser or spontaneously is typically: 10. पोस्ट-लेज़र या स्वत: उत्पन्न TAPS का पता लगाने के लिए मोनोकोरिओनिक ट्विन्स में MCA-PSV की स्क्रीनिंग अनुसूची सामान्यतः क्या होती है?
A. Serial MCA-PSV measurements (eg every 1–2 weeks after procedure or if clinically indicated)
B. One measurement at 12 weeks only
C. No Doppler surveillance needed
D. Only postnatal screening matters