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本文选择了３０例妊娠３８周，临床疑诊耻骨联合分离症的孕妇和２８例妊娠３８周无妊娠合并症的孕妇，采用超声观察测量耻骨联合缝隙的宽度及左右错合情况，并产后随访。结果表明：临床疑诊３０例中有２６例耻骨联合缝隙宽度最小１０ｍｍ，最宽者达２３ｍｍ，平均１６．７ｍｍ，并可见二侧耻骨左右错合呈阶梯样改变，错合差度最小５ｍｍ，最大达６．８ｍｍ，平均５．７１ｍｍ，超声诊断为耻骨联合分离症与临床符合率为８７％。正常组２８例中耻骨联合缝隙宽度在１０ｍｍ以下，左右对称，未见错合。本文认为Ｂ超诊断晚孕产妇耻骨联合分离症有很高价值
This article selected 30 cases of pregnancy 38 weeks, clinical suspicion of pubis combined sepsis in pregnant women and 28 cases of pregnant women without pregnancy complications 38 weeks pregnant women, the use of ultrasound to measure the width of the pubic symphysis gap and left and right misplacement, and postpartum follow-up. The results showed that among the 30 clinically suspected cases, 26 cases had the smallest pubic symphysis gap width of 10mm and the widest of them reached 23mm with an average of 16.7mm. Up to 6.8mm, an average of 5.71mm, ultrasound diagnosis of pubic symphysis and clinical coincidence rate of 87%. The normal group of 28 cases of pubic symphysis gap width below 10mm, symmetrical, no mismatch. This article believes that B-ultrasound diagnosis of late pregnancy maternal pubic symphysis has high value