Arab Board Ob Gyn Final Written Practice Questions - Arab Board Obstetrics And Gynecology Final Written Examination Exam

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A monochorionic diamniotic twin pregnancy at 26 weeks is monitored for twin anemia-polycythemia sequence (TAPS). Which of the following Doppler ultrasonography criteria confirms the antenatal diagnosis of TAPS?

Middle cerebral artery peak systolic velocity (MCA-PSV) > 1.5 MoM in the donor and < 1.0 MoM in the recipient, in the absence of polyhydramnios-oligohydramnios sequence Deepest vertical pool < 2 cm in donor and > 8 cm in recipient without Doppler discrepancies Umbilical artery pulsatility index > 95th percentile in both twins with normal MCA velocities Absent end-diastolic velocity in the umbilical artery of the larger twin

Correct Answer:

Middle cerebral artery peak systolic velocity (MCA-PSV) > 1.5 MoM in the donor and < 1.0 MoM in the recipient, in the absence of polyhydramnios-oligohydramnios sequence

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