ABSTRACT

We retrospectively evaluated the factors affecting labor induction success in the management of pregnancies at or beyond 41 weeks of gestation.

Gestational and obstetric records of 113 patients delivered at or beyond 41 weeks of gestation were retrospectively reviewed.

The rate of induced vaginal delivery was 93.1% (n=27) in patients with Bishop score ≥7 and 60.7% in patients with Bishop score <7 (n=84) and was significantly higher in patients with Bishop score ≥7 (p=0.003; p<0.01). The rate of induced vaginal delivery was 79.7% in multiparous women and 57.4% in nulliparous women and the rate was significantly higher in multiparous women (p=0.019; p<0.05). The rate of induced vaginal delivery was 73.2% in patients with normal AFI and 43.8% in patients with oligohydramnios and the rate was significantly higher in patients with normal AFI (p=0.037; p<0.05). Apgar score was significantly higher in the infants of the patients with normal AFI compared to patients with oligohydramnios (p=0.008; p<0.01) and the rate of NICU admission was higher in patients with oligohydramnios than in patients with normal AFI (p=0.028; p<0.05).

Bishop score, parity, amniotic fluid index influence labor induction success in pregnancies at or beyond 41 weeks of gestation. Fetal distress and cesarean section rate was higher at patients with Bishop score <7 who were nulliparous and with oligohydroamnios.