Induction of Labor at 41+2 Weeks Gestation Investigated for Reducing Neonatal Morbidity Versus Expectant Management

Post-term pregnancy, defined as gestation extending beyond 41 weeks, significantly elevates the risks of perinatal morbidity and mortality for the neonate. Current obstetric practice faces a critical decision point: whether to induce labor or to continue with expectant management, which involves close monitoring. The optimal timing and specific interventions to minimize adverse outcomes while avoiding unnecessary medicalization remain a subject of ongoing debate. This study aimed to provide clarity on the most effective approach for pregnancies progressing beyond 41 weeks + 2 days.

This was a RANDOMIZED clinical trial (NCT00385229) enrolling 508 women with post-term pregnancy at 41 weeks + 2 days gestation. Participants were randomly allocated to one of two arms: Induction or Expectant Management. The Induction arm received labor induction using agents such as Misoprostol, Dinoprostone, amniotomy, or Oxytocin. The Expectant Management arm involved close monitoring of the pregnancy every third day until spontaneous delivery. The primary endpoint for the study was neonatal morbidity, assessed peri- and postnatally.