Elective induction of labor: A prospective observational study

PLoS One. 2018 Nov 29;13(11):e0208098. doi: 10.1371/journal.pone.0208098. eCollection 2018.

Abstract

The aim of the present study was to assess indications for induction and describe the characteristics and delivery outcome in medical compared to non-medical/elective inductions. During a three-month period, 1663 term inductions were registered in 24 delivery units in Norway. Inclusion criteria were singleton pregnancies with cephalic presentation at gestational age 37+0 and beyond. Indications, pre-induction Bishop scores, mode of delivery and adverse maternal and fetal outcomes were registered, and compared between the medically indicated and elective induction groups. Ten percent of the inductions were elective, and the four most common indications were maternal request (35%), a previous negative delivery experience or difficult obstetric history (19%), maternal fatigue/tiredness (17%) and anxiety (15%). Nearly half of these inductions were performed at 39+0-40+6 weeks. There were fewer nulliparous women in the elective compared to the medically indicated induction group, 16% vs. 52% (p<0.05). The cesarean section rate in the elective induction group was 14% and 17% in the medically indicated group (14% vs. 17%, OR = 0.8, 95% CI 0.5-1.3). We found that one in ten inductions in Norway is performed without a strict medical indication and 86% of these inductions resulted in vaginal delivery.

Publication types

  • Observational Study

MeSH terms

  • Adult
  • Cesarean Section / psychology
  • Delivery, Obstetric / psychology
  • Elective Surgical Procedures / psychology*
  • Female
  • Gestational Age
  • Humans
  • Labor, Induced / methods*
  • Labor, Induced / psychology*
  • Labor, Obstetric / physiology
  • Labor, Obstetric / psychology
  • Norway / epidemiology
  • Pregnancy
  • Pregnancy Outcome / epidemiology
  • Prospective Studies
  • Risk Factors
  • Term Birth / psychology

Grants and funding

The authors received no specific funding for this work.