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spontaneous demise of a monochorionic twin

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Chapter 12 - Monochorionic Twin Pregnancy
from Section 1 - Obstetric Aspects of Antenatal Care
- By Nimrah Abbasi, Greg Ryan
Edited by Amira El-Messidi, McGill University, Montréal, Alan D. Cameron, University of Glasgow
Book:

OSCEs in Obstetrics and Maternal-Fetal Medicine

Published online:

23 February 2023

Print publication:

16 February 2023, pp 158-172
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Summary

A 34-year-old primigravida is referred by her primary care provider to your hospital center’s high-risk obstetrics unit after sonographic imaging confirmed viable intrauterine spontaneous monochorionic diamniotic (MCDA) twins with crown–rump lengths (CRL) of 47 mm and 44 mm, consistent for 12+4 weeks’ gestation by CRL of the larger twin. Twin A’s and twin B’s nuchal translucency (NT) measurements are 1.5 mm and 1.0 mm, respectively, with normal-appearing first-trimester fetal morphologies.