足月初产妇临产时胎头尚未衔接(入盆)者,称胎头浮动,胎头不入盆往往提示难产的潜在因素,故初产妇临产时胎头浮动应引起产科医生的足够重视。我院自1996年6月到1998年10月间,初产妇临产时胎头浮动186例进行临床分析如下。1　资料及方法1.1　病例及对照组的选择:①病例的选择:根据三项诊断标 Full-term primiparous labor when the fetal head has not yet convergence (into the basin), said the fetal head floating, fetal head not into the basin often prompted the potential causes of dystocia, so the first fetal labor during fetal head floating should cause obstetricians enough attention. Our hospital from June 1996 to October 1998 between the primiparous floating fetal head during the clinical analysis of 186 cases are as follows. 1 Materials and Methods 1.1 Case and control group options: ① Case Selection: According to the three diagnostic criteria