Cervical COOK balloon induced labor outcomes and related influencing factors in puerperae with full-term pregnancy
Objective To explore the outcomes of cervical COOK balloon induced labor in puerperae with full-term pregnancy and to analyze the related influencing factors.Methods The data of 196 puerperae with full-term pregnancy treated at Xianyang Maternal and Child Health Hospital were retrospectively analyzed.They were(29.48±4.61)years old.Their body mass index(BMI)was(26.52±1.86)kg/m2.Their cervical Bishop score before placing the balloons was(4.03±0.46).All the patients were induced by cervical COOK balloons.According to the induced labor outcomes,the puerperae were divided into a successful induced labor group and a failed induced labor group.The factors affecting the induced labor outcomes were analyzed.The data were compared between the two groups by the independent-sample t test and x2 test.The influencing factors were analyzed by bivariate logistic regression analysis.The receiver operating characteristic curve(ROC)was used to analyze the value on predicting their pregnancy outcomes.Results Among the 196 puerperae,there were 145 cases of successful induced labor and 51 cases of failed induced labor,including 10 cases of forceps delivery,9 cases of drug-assisted induced induction,and 32 cases of cesarean section.The age,neonatal weight,proportions of the women with prenatal BMI>25 kg/m2,primiparity,and balloon placement time>12 h in the failed induced labor group were higher than those in the successful induced labor group(all P<0.05),while the Bishop score was significantly lower than that in the successful induced labor group(P<0.05).There were no statistical differences in gestational age,complications,indications for induction of labor,and proportion of the women with premature rupture of membranes between the two groups(all P>0.05).The multivariate logistic regression analysis showed that increased age,prenatal BMI>25 kg/m2,primiparity,and elevated neonatal weight were the risk factors for failed induced labor in the puerperae(all P<0.05),and the increase of Bishop score was the favorable factor for successful induced labor(P<0.05).The ROC analysis revealed that the area under the curve,sensitivity,and specificity of the above factors in predicting the failed induced labor by cervical COOK balloons in the puerperae were 0.812,72.55%,and 75.17%,respectively.Conclusions For puerperae with full-term pregnancy,the application of cervical COOK balloon induced labor has a certain risk of induced labor failure.Increased age,proportion of prenatal BMI>25 kg/m2,primiparity,and neonatal weight increase are risk factors for induced labor failure in puerperae with full-term pregnancy.
Induced laborCOOK balloonPuerperae with full-term pregnancyInfluencing factorsPredictive value