高位还是低位经阴道宫颈环扎术更能预防早产?C-STICH试验二次分析揭示新线索
本研究对 C-STICH 试验进行二次分析,比较早产高风险女性接受高位与低位经阴道宫颈环扎术后的妊娠结局。结果显示,两组妊娠丢失无显著差异,但高位环扎可轻度延长孕周并减少极早早产。
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