双胎之另一胎儿的脐带断端所致胎儿失血
Fetal blood loss from cut end of co-twin’s cord
分娩伴脐带过短
Labour and delivery complicated by short cord
钢管脐带缆
steel tube umbilical cable
脐带边缘附着
marginal insertion of umbilical cord
脐带缠绕
Cord entanglement
Encirclement of umbilical cord
脐带帆状附着
velamentous insertion of umbilical cord