目的:探讨脐带真结的产前超声诊断及其在产时评估中的价值。方法:回顾分析产前超声诊断为脐带真结的6例患者的临床资料,所有病例均行二维超声及彩色多普勒超声检查,应用三维超声对可能受累的脐带节段进行观察以进一步确定其特征。对6例脐带真结病例的超声影像学表现进行分析。结果:6例脐带真结产前诊断均于分娩时确诊。6例病例中5例单胎足月后剖宫产终止妊娠,1例单绒毛膜单羊膜囊双胎宫内死亡行引产。5例单胎病例表现为单个结样特征,1例单绒毛膜单羊膜囊双胎者两胎儿脐带互相缠绕形成复杂的结样特征。三维超声显示所有患者的血管空间构型与脐带真实结一致。结论:产前超声可准确诊断脐带真结,三维超声可进一步确诊,可为临床提供更多的信息。

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