[Factors affecting the prediction of successful induction]

ABSTRACT

Induction is one of the most common interventions in midwifery which is conducted for many clinical purposes. One of the main challenges of the induction is the prediction of its success because its failure has a major role in increasing the rate of cesarean section. Therefore, the present study was conducted to investigate the role of maternal age, parity, gestational age, birth weight and cervical status in predicting the success of induction. This cohort study involved the population of pregnant women admitted to Mobini Maternity Hospital in Sabzevar, Iran in 2006. A sample of 175 pregnant healthy women was selected by non-probability convenient sampling. For data collection, a checklist and a questionnaire were used for recording the personal details, midwifery history and labor details. For data analysis, they were analyzed in SPSS 15 using chi-square, mantel henzel and logistic regression tests [p < 0.05]. Based on the findings, 41.1% of the inductions were lengthened, and 45.1% of its failure related to lack of labor progression. In total, 33.7% of the women underwent cesarean section due to unsuccessful induction. Controlling the variables such as dilation, effacement, descent, maternal age, gestational age, parity and neonatal weight, the logistic regression showed that the only significant effect was the effect of cervical dilation [OR=2.55], so that for every cm of dilation at the beginning of the induction, the chances of a successful induction was 2.55. The results indicated that cervical dilation is the only factor in predicting the success of induction