初产妇临产时胎头浮动 ,是指产妇初产 ,胎儿为头位 ,进入产程后胎头仍未衔接于骨盆入口的一种现象 (以下简称初产头浮 )。诊断标准 :1大于 37周妊娠的初产头位。 2临产时胎儿先露部的最低点 (胎头的骨质部 )仍未衔接于骨盆的 S-2 水平。 3无孕 7个月以上的引产史。1996年 1月～ The fetal head floating at the time of first-trimester childbirth refers to the first birth of the mother and the fetus is the head position. The phenomenon that the fetal head has not converged to the entrance of the pelvis after entering the stage of labor (hereinafter referred to as the first-born head floating). Diagnostic criteria: 1 Greater than 37 weeks of pregnancies at the time of first birth. 2 At the time of delivery, the lowest point of the exposed part of the fetus (the fetal head bone part) is still not connected to the pelvis S-2 level. 3 Infertility history with no pregnancy more than 7 months. January 1996 -