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胎头以前顶骨下降入盆呈倾势不均称前不均倾位。前不均倾位属头位难产,过去人们对此种胎头位置缺乏认识与重视,国内文献少有报道。本症绝大多数需剖宫产结束分娩,延误诊断与处理则危及母儿安全。临床资料一、发生率我院1984年1月至12月住院分娩总数为2907例,前不均倾位为40例,其发生率为1.38%,而头位分娩总数为2705例,则其发生率为1.48%,比国内凌氏报道为高。二、发生原因本文前不均倾位40例中,有明显诱因者22例,其中骨盆狭窄4例,头盆不称(?)例,双胎1例,巨大胎儿2例,胎膜早破7例,催产素点滴引产4例。原因不明者18例。
Before the top of the fetal head into the basin was uneven before the uneven tilt. Before the uneven dumping is the first position of dystocia, people in the past lack of awareness of this kind of fetal head position and attention, few domestic literature. Most of the disease required cesarean delivery end of delivery, delay diagnosis and treatment endanger the safety of mothers and children. Clinical data First, the incidence of January 1984 to January in our hospital a total of 2907 hospital deliveries, the former uneven dumping was 40 cases, the incidence rate was 1.38%, while the total head delivery of 2705 cases, the occurrence Rate was 1.48%, higher than the domestic Ling reported. Second, the reasons for this uneven dumping in 40 cases, there were 22 cases of obvious incentives, including 4 cases of pelvic stenosis, cephalopelvic disproportion (?) Cases, twins in 1 case, macrosomia in 2 cases, premature rupture of membranes 7 cases, oxytocin drip 4 cases. 18 cases of unknown reasons.