Abstract
多胎妊娠有更多的围产期母儿并发症。由于单绒毛膜双胎的血管吻合和胎盘共享不均匀，使得部分单绒毛膜双胎妊娠的妊娠并发症明显增加，易发生双胎之一死胎、双胎输血综合征、双胎动脉反向灌注序列征、双胎之一胎儿选择性生长受限、双胎之一胎儿畸形等，称为复杂性双胎，严重影响了围产儿的生命质量及预后。射频消融术（RFA）是1种微创技术，对复杂性多胎进行减胎时，通过高频电流可凝固、闭塞脐带血流。RFA具有穿刺针直径较小，不适感少，能够在局部麻醉下操作等技术优势，手术相关并发症的发生率也相对较低，在妊娠13周后即可安全地进行。采用RFA行选择性减胎是安全有效的，该技术的临床应用为复杂性多胎减胎术提供了新的途径，改善了围产儿的预后。.
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