我院对438例孕妇用25%硫酸镁注射液软化宫颈,取得了很好的疗效。现报告如下。1对象与方法1.1对象:以2007年8月至2008年7月在我院住院孕妇438例为研究对象,年龄22～34岁,妊娠35～42周,胎位及骨盆测量正常,无明显头盆不称,均进入第一产程,宫口开大2cm,以内诊两指进入宫颈口能自 438 pregnant women in our hospital with 25% magnesium sulfate injection soften the cervix, and achieved good results. The report is as follows. 1 Subjects and Methods 1.1 Object: In August 2007 to July 2008 in our hospital 438 pregnant women as the research object, aged 22 to 34 years old, 35 to 42 weeks of gestation, fetal position and pelvis measured normal, no head basin Do not say, are entering the first stage of labor, cervix open 2cm, two fingers into the cervix can be self-diagnostic