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Abstract To compare the effect of disposable balloon cervical dilator used in induction of labor of full-term pregnant women with different amniotic fluid volumes. Methods: 116 full-term pregnant women who had undergone induction of labor by disposable balloon cervical dilator from August 2019 to September 2021 were selected retrospectively. According to the amniotic fluid index (AFI) value, these women were divided in group (26 women with the AFI value below 5cm), group B (42 women with the AFI value in 5-8cm), and group C (48 women with the AFI value over 8cm), respectively. The effective rate of promoting cervical ripening, the pregnancy outcomes, and the neonatal outcomes of the women were compared among three groups. Results: The effective rate (53.9%) of promoting cervical ripening of the women in group A was significantly lower than that (71.4%) of the women in group B and that (85.4%) of the women in group C (P<0.05). There were no significant differences in the postpartum blood loss, the duration of first stage of labor, and the complications rate of induced labor of the women among the three groups (P＞0.05). The rate of natural delivery of the women in group A (19.2%) or in group B (33.3%) were significantly lower than that (47.9%) of the women in group C, and the rate of cesarean section of the women in group A (53.9%) or in group B (47.6%) were significantly higher than that (27.1%) in group C. The Apgar score at 1min of newborns after birth in group A (7.92±0.27 points) or in group B (7.85±0.32 points) was significantly lower than that (9.92±0.26 points) of the women in group C (all P<0.05). There was no significant difference in the incidence of neonatal jaundice among the three groups (P＞0.05). The incidences of the neonatal low weight, fetal distress, asphyxia, and pneumonia in group A were significantly higher than those in group B and in group C (P<0.05). Conclusion: The value of AFI has significant impact on the outcomes of induced labor by bisposable balloon cervical dilator of full-term pregnant women. The lower value of AFI, the poorer pregnancy outcomes of the women is. AFI of the pregnant women can be used as a reference index of the for evaluating their pregnancy outcomes in the clinic.
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