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产时胎儿窘迫和胎儿下降受阻并不少见,往往需要产钳助产或手术分娩,但对于这种产时并发症常常不能作出解释,尤其在后来娩出一个健康婴儿时。这些并发症当合并有脐带过长或过短时,有可能解释这种情况。本文研究自1979年9月至1980年1月足月分娩的536例的脐带,测量其长度和直径。早产、臀位双胎、再次剖腹产及已知的严重胎儿异常不包括在内。记录产妇年龄、种族、产次胎龄和产前合并症。明显的脐带异常包括帆状附着、脐带细小(直径<1 cm),单一脐动脉、脐带狭窄、扭转和血肿。脐带意外包括脐带绕颈、真结和脱垂。每次妊
Fetal distress and fetus dropouts are not uncommon during labor and tend to require forceps for midwifery or surgical deliveries, but often can not be explained for this labor-specific complication, especially when a healthy baby is delivered later. These complications may explain this when combined with an umbilical cord that is too long or too short. This article examines 536 cases of umbilical cord that have been delivered in full term from September 1979 to January 1980 and measured their length and diameter. Premature birth, breech twins, cesarean section and known severe fetal abnormalities are not included. Record maternal age, race, parity and prenatal complications. Obvious umbilical cord abnormalities include sail attachment, small umbilical cord (<1 cm in diameter), single umbilical artery, stenosis, torsion and hematoma. Umbilical cord accidents include umbilical cord around the neck, true knot and prolapse. Each pregnancy