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Updated: May 17, 2026

Fetal Echocardiography and Pulsed-wave Doppler Ultrasound in a Rabbit Model of Intrauterine Growth Restriction
Published on: June 29, 2013
Right ventricular outflow tract obstruction in monochorionic twins with selective intrauterine growth restriction
S B de Haseth1, M C Haak, A A W Roest
1Division of Fetal Medicine, Department of Obstetrics, Leiden University Medical Center, 2300 RC Leiden, The Netherlands.
Abstract:
Monochorionic twin pregnancies are at increased risk of perinatal mortality and morbidity due to twin-twin transfusion syndrome (TTTS), selective intrauterine growth restriction (sIUGR), and higher incidence of congenital heart malformations. The incidence of right ventricular outflow tract obstruction (RVOTO) in recipients with TTTS is known to be higher than in the general population. There is limited data on the risk of RVOTO in monochorionic twins with sIUGR. We report a case of RVOTO in the larger twin in a monochorionic twin pregnancy with sIUGR, treated successfully with balloon dilatation after birth.
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