Incidence of preterm delivery in twin pregnancy is: (A) 25%, (B) 50%, (C) 75%, (D) 100%
Answer is B. Incidence of preterm in twin pregnancy is 50% Mean gestational age for twins is 37weeks Causes of prematurity: Overdistention of uterus Hydromnios Premature rupture of membranes Ref: Dutta Obs 9e pg 193.