Abstract
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• Discuss the impact zygote duplication timing has on chorionicity and amnionicity.
• Describe the complications related to monozygotic triplets.
• List the sonographic surveillance recommendations for monochorionic pregnancies.
Which type of multifetal pregnancy is likely if duplication of the zygote occurs after 11 days? A. Conjoined B. 1 chorion, 1 amnion C. 1 chorion, individual amnions D. Individual chorions and amnions
According to the article, what percentage of monochorionic triamniotic (MCTA) pregnancies have growth discordance? A. 4.25% B. 68% C. 26% D. 36%
How often should monochorionic pregnancies be evaluated for evidence of twin-twin transfusion syndrome (TTTS) and twin anemia-polycythemia sequence (TAPS)? A. Every week B. Every 2 weeks C. Every 3 weeks D. Every 4 weeks
Which Doppler waveform should be obtained when fetal growth restriction is suspected? A. Umbilical artery B. Uterine artery C. Middle cerebral artery D. Ductus venosus
What percentage of triplet pregnancies are MCTA? A. 26% B. 70% C. 4.25% D. 68%
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