Assessment of prevalence on failed induction of labor and associated factors among women delivered from June –august 2016 in SPHMMC.

Abstract

Abstract Background: Failed IOL has become more frequent in recent years and IOL is extremely common procedure performed in all obstetrics settings. In developed countries 1 in 4 pregnancies undergo IOL. On a study done in Hawassa hospital in prevalence and associated factors in 2015, the prevalence of failed IOL was 17.3% and 20%- 40% in other cited researches. We need to know the prevalence in our setting and find or develop predictive tools when to expect an IOL who may not reach active phase is crucial to minimize the risk and cost associated with IOL failure. Objectives: To assess and determine the prevalence and identify the associated predictive factors for failed induction of labor among women delivered in SPHMMC labor ward. Methods and Materials: Retrospective cross-sectional study was carried out in SPHMMC from June –august, 2016, with target population being all pregnant women admitted to SPHMMC labor ward. Independent variables as Age, Ethnicity, Parity, Gestational age in week, Birth Weight, Cervical status, Indication for induction, prolonged latent phase, chronic medical illness, bad obstetrics history will be evaluated and analysis with IBM ® SPSS Statistics 20. Results: Total number of delivery during the study period was 1666 of which 207 were selected for induction. The incidence of labour induction was12.43 %, where 61.8% of the study group had successful induction and failed induction of labor account for 15%. The predominant indication for induction was preeclampsia/eclampsia spectrum followed by oligohydramnios and PROM. Those with Bishop Score of less than 5, 58.1% underwent Caesarean section for failed induction. Failed induction was higher in unknown date, Nulliparous and gestational age group between 37-38 and 39 40 weeks.The average time to diagnose failure of induction was 9.8 hours. CONCLUSION: In this study it is predicted that the gravida status and Bishop Score have influence in success of labor. Unfavorable cervix result in prolonged labor, failed induction and an increased caesarean delivery rate. Rate failed induction were increased in maternal age between 20-25 range, chorioaminitis, unknown date and fetal birth weight of 2500-3kg. Key words: Induction, Cervical favorability, labor