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目的:通过对延期妊娠孕妇静脉滴注0.2%与0.5%两种浓度缩宫素,比较其促宫颈成熟及引产效果和超声下宫颈形态的变化。方法:对227例孕41～41+6周延期妊娠孕妇随机分成两组,各静脉滴注1种浓度缩宫素,比较两种浓度缩宫素促宫颈成熟及引产效果。结果:宫颈Bishop评分<7分者,两种浓度缩宫素提高宫颈评分差异无统计学意义(P>0.05),宫颈Bishop评分≥7分者,两种浓度缩宫素分娩率差异有统计学意义(P<0.05),并与超声监测下宫颈形态变化呈一致性。结论:低浓度缩宫素能产生有效宫缩,促宫颈成熟引产安全有效。宫颈Bishop评分<7分者,0.2%缩宫素发生胎儿窘迫率低,可作为促宫颈成熟引产首选;宫颈Bishop评分≥7分者,0.5%缩宫素促宫颈成熟引产催产效果好。
OBJECTIVE: To compare the effects of cervical oxytocin and oxytocin at 0.2% and 0.5% on pregnant women with postprandial pregnancy, and to compare their effects on cervical ripening and induction of labor and cervical morphology under ultrasound. Methods: A total of 227 pregnant women with deferred pregnancy from 41 to 41 + 6 weeks of gestation were randomly divided into two groups. One oxytocin was intravenously instilled at each concentration, and the effect of oxytocin at two concentrations on cervical ripening and induction of labor was compared. Results: Cervical Bishop score <7 points, two concentrations of oxytocin increased cervical score was no significant difference (P> 0.05), cervical Bishop score ≥ 7 points, two concentrations of oxytocin delivery rates were statistically significant Significance (P <0.05), and with the ultrasound monitoring of cervical morphology consistent. Conclusion: Low concentration of oxytocin can produce effective contractions, and promote cervical ripening is safe and effective. Cervical Bishop score <7 points, 0.2% oxytocin fetus with low fetal distress rate can be used as the first choice to promote cervical ripening; cervical Bishop score ≥ 7 points, 0.5% oxytocin to promote cervical ripening induction of labor is good.