Clinical studies of double lumen Foley catheter on cervical ripening in obstetrical delayed pregnancy

Objective To investigate the cervical ripening effect of double lumen Foley catheter in obstetrical delayed pregnancy. Methods Two hundred pregnant women who had delayed pregnancy were randomly divided into the experimental group( n = 100) and the control group( n = 100). On the day of admission the control group was given the low concentration of oxytocin( 2. 5 U in 500 ml normal saline) intravenously for labor induction. On the next day after admission,the experimental group received routine disinfection for vulva,vagina and cervix,then the double lumen Foley catheter was inserted into the cervix. On the next day after catheterization,cervix was examined for cervical score,with cervical scores more than seven points or more being defined as effectiveness. For pregrant women with irregularuterine contraction,the low contraction of oxytocin was given( the dose was the same as that in the control group). The infusing speed was adjusted according to the condition of uterine contraction and the condition that timely artificial rupture was performed; Pregnant women who had cervix dilativn of 3 cm and regular contractions should be expected natural childbirth. Cervical score,the onset time of labor and total delivery labor time,neonatal scoring after birth,postpartum morbidity( reproductive tract infections and cervical laceration) were observed in the two groups,and the clinical effects after treatment were compared between the two groups. Results The effective rate in the experimental group was significantly higher than that in the control group( P 0. 05). The cervical score in the experimental group was significantly higher than that in the control group after catheterization for 12 hours( P 0. 05). The cesarean section rate was significantly lower in the experimental group than that in the control group( 14. 00% vs 29. 00%)( P 0. 05). The onset time of labor and the total delivery labor time in the experimental group were significantly shorter than those in the control group( P 0. 01). There were no significant differences in the incidence of postpartum( reproductive tract infections and cervical laceration),birth weight,neonatal scoring between the two groups( P 0. 05). Conclusion Application of double lumen Foley catheter for cervical ripening in delay pregnancy is safe and effective.