multiple gestation
Pregnancy involving two or more fetuses, including twins, triplets, or higher-order multiples.
Full Definition
Multiple gestation refers to pregnancies involving two or more fetuses developing simultaneously in the uterus. The most common form is twin pregnancy, which occurs in approximately 3% of all pregnancies. Multiple gestations can be monozygotic (identical) or dizygotic (fraternal) and are further classified by chorionicity and amnionicity. These pregnancies carry increased risks including preterm delivery, growth restriction, congenital anomalies, and maternal complications such as gestational diabetes and preeclampsia. Management requires specialized monitoring with more frequent prenatal visits and ultrasound examinations.
Usage
Usage note: Specify chorionicity and amnionicity when known; distinguish from singleton pregnancy management.
In Context
- "Ultrasound confirmed multiple gestation with dichorionic diamniotic twins." — First trimester ultrasound report
- "Multiple gestation requires intensive prenatal monitoring and delivery planning." — High-risk pregnancy consultation