目的 探讨在月经周期规则的低风险人群中,孕6～8周时根据平均妊娠囊直径预测妊娠结局的价值。 方法回顾性分析本院4 866例孕6～8周胚胎存活的早孕病例资料,根据平均妊娠囊直径分为平均妊娠囊直径小于相应孕周第5百分位数组(A组)和小于相应孕周第50百分位数组(B组)以及大于或等于相应孕周第50百分位数组(C组),比较三组病例后期发生难免流产、胚胎停止发育等妊娠失败的比例。结果 4 866例胚胎存活的病例中,妊娠失败488例(10.0%)。其中A组92例,妊娠失败74例(80.4%);B组343例,妊娠失败78例(22.7%);C组4 431例,妊娠失败336例(7.6%)。三组妊娠失败的发生率比较,差异有统计学意义。结论 在低风险人群中,孕6～8周平均妊娠囊直径越小,妊娠失败的风险越高。
关键词
平均妊娠囊直径 /
妊娠结局 /
经阴道超声
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