0 cases ( %)had Malpresentions. cases(9.%)had contracted pelves and pelvic malformations; cases ( .97%)had necks coiled with umbilical cord,7 cases ( .89%)had barrier of amnionic sac.
0 cases ( %)had Malpresentions. cases(9.%)had contracted pelves and pelvic malformations; cases ( .97%)had necks coiled with umbilical cord,7 cases ( .89%)had barrier of amnionic sac.
头浮原因不能在每个初产妇找到,也可能几个原因同时存在,多与胎方位异常(0例占 %)骨盆狭窄或畸形( 例占9.%)、脐带缠颈( 例占 .97%)、羊膜囊障碍(7例占 .89%)等有关。