Twin Births


Twin Births


Gill Prabhcharan; Van Hook MD James W






Twin births account for approximately 3% of live births and 97% of multiple bouts in the United States. In the absence of assisted reproductive technology, dizygotic twins are far more common than monozygotic twins and account for 70% of all twin gestations. Whereas the instance of dizygotic twins is variable in different populations, the prevalence of monozygotic twinning is globally constant at 3 to 5 per a thousand births. Except for post-term pregnancy and fetal macrosomia, pregnancy-related risks are exaggerated. Preterm birth is a prominent risk associated with twin gestations with others at risk for fetal growth restriction, congenital anomalies, and abnormal placentation. Other obstetric risks that increase include the risk of preeclampsia and gestational diabetes. Twin gestation in itself is not an adequate obstetric diagnosis. Definition of the placental chronicity is essential, as monochorionic twin gestations have unique risks associated with them that deserves surveillance.[1]


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NEOMED College

NEOMED College of Medicine

NEOMED Department

Department of Obstetrics & Gynecology

Affiliated Hospital

Aultman Hospital


Gill Prabhcharan; Van Hook MD James W, “Twin Births,” NEOMED Bibliography Database, accessed May 27, 2024,