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脐带位置异常对胎儿威胁甚大,若处理不及时极易引起胎儿窘迫、死亡。脐带位置异常按照脐带所处的位置及胎膜是否破裂分:①脐带先露:胎膜未破时,脐带已经到先露前方。②隐性脐带脱垂:不管胎膜破裂与否,脐带位于先露一侧,夹在先露与子宫下段之间。③脐带脱垂:发生于胎膜破裂后,脐带在先露之前脱出宫颈外口。脐带位置异常以横位及臀位及发生率较高,头位则较少。现将3例头位分娩脐带位置异常
Abnormal umbilical cord position on the fetus is very large, if not handled easily lead to fetal distress and death. Abnormal umbilical cord position in accordance with the location of the umbilical cord and fetal membrane is broken points: ① cord umbilical cord exposed: the umbilical cord has been exposed to the front. ② hidden umbilical cord prolapse: Regardless of the rupture of the fetal membranes, umbilical cord is located in the first exposed side, caught between the first exposed and the lower uterine segment. ③ umbilical cord prolapse: occurred in the rupture of the membranes, the umbilical cord in the first exposed before the cervix outside the mouth. Abnormal umbilical cord position and lateral breech and the incidence of higher, the first bit is less. Now the first three cases of umbilical cord delivery abnormal position