Maternal and neonatal outcomes of adolescent pregnancy

To examine the maternal and neonatal outcomes of adolescent pregnancies.

Deliveries that occurred in a high-volume tertiary center between January 2013 and December 2016 were retrospectively analyzed. We studied pregnant women who were under 19 years of age at the time at which they gave birth, and who underwent regular follow-up. Pregnancies associated with chromosomal abnormalities, early pregnancy losses (before 20 weeks), and ectopic pregnancies were excluded.

In all, 101 pregnant women aged <15 years and 3611 aged 15-19 years were enrolled. The control group contained 13,501 randomly selected pregnant women aged 25-30 years. The median gestational week at delivery was lower in adolescents. Adolescent pregnancies were associated with higher rates of threatened abortion and pre-eclampsia. Gestational diabetes mellitus was less common, whereas the risk for cesarean section was higher, in adolescents. In addition, women aged <15 years were at higher risk for preterm delivery. The rates of <3rd percentile birth weight percentiles by gestational age were 6.9%, 5.1%, 4.2% and <10th percentile were 16.8%, 14.5%, 11% in the three groups, respectively. The 5 min Apgar scores were lower for the babies of adolescents, and the requirement of newborn intensive care was higher for the infants of mothers aged <15 years.

Adolescent pregnancy is a significant issue worldwide. Adverse outcomes differ among study populations, but both preterm delivery and low birth weight are of concern, as are a higher cesarean rate.