Abstract:

Velamentous cord insertion(VCI) refers to the attachment of umbilical cord to the fetal membrane at the edge of placenta, which is more common in primiparas, multiple pregnancies and pregnant women who used human assisted reproductive technology. Because of its special anatomic position, VCI can lead to adverse pregnancy outcomes of both mother and infant. Mild cases show fetal growth retardation, and severe cases show intrauterine fetal death. In terms of treatment, there is no specific and effective drug intervention, and the clinical treatment mainly depends on the gestational age and intrauterine condition of the fetus. We reported a clinical case of twin fetuses growth restriction caused by both of VCI after in vitro fertilization-embryo transfer. We hope to improve the academic vision and the understanding of this disease in obstetricians and gynecologists.

Key words: Fertilization in vitro, Embryo transfer, Pregnancy, twin, Umbilical cord, Fetal growth retardation, Velamentous cord insertion, Fetal growth restriction