Persistent pulmonary hypertension of the newborn following elective cesarean delivery at term.

Objective: To evaluate the frequency of persistent pulmonary hypertension of the newborn (PPHN) following elective cesarean at greater than 34 weeks' gestation in an academically affiliated community hospital.

Methods: Retrospective cohort study involving chart review of 300 newborns with PPHN between 1999 and 2006. Infants less than 34 weeks' or with congenital anomalies were excluded.