Adolescent primiparas: changes in obstetrical risk between 1983-1987 and 1999-2005.

AIMS: Teenage pregnancies have always been considered at increased risk for obstetric complications. Deliveries in adolescent primiparas in the 5-year time periods 1983-1987 and 1999-2005 were compared against each other, the general population and against primiparas aged 20-29 years in order to reveal trends and differences in obstetric outcome. METHODS: A total of 186 primiparas delivering at an age of 17 or less between October 1999 and October 2005 were compared with 353 adolescent primiparas delivered between 1983 and 1987. Type of delivery and complications such as low birthweight, pre-eclampsia, breech presentation and third stage complications were studied. RESULTS: The percentage of adolescents in the overall obstetric population decreased. The cesarean section rate remained the same in the adolescents while increasing in the general population. Rates of low birthweight and operative vaginal delivery increased in the adolescent group and overall. Third stage complications (abnormally adherent or incomplete placentas) decreased in both groups. There were no intrauterine fetal deaths in adolescent pregnancies in either time period. Other obstetric variables were unchanged in the adolescent as well as in the general population between 1999 and 2005. When comparing the adolescents' outcome with the outcome of the 20-29-year-old primiparas between 1999 and 2005, it was noted that the rates of abstracted obstetric variables were higher in the population of the 20-29-year-olds. CONCLUSIONS: The obstetric outcome of adolescent pregnancies has remained favorable over the last 18 years. We do not consider adolescence as an obstetrical risk. We suggest that adolescent pregnancy is more a public health issue than a clinical problem.