由于单绒毛膜双胎相对于双绒毛膜双胎妊娠具有更高的围产儿发病率和死亡率,在孕早期正确诊断绒毛膜性与羊膜性可帮助我们分辨高危的双胎并对其加强监护,更有效地诊断双胎的合并症,对不同的合并症选择合适治疗方式。因此,如果能明确双胎的绒毛膜性,将对于产前咨询和临床处理有着 Since monochorionic twins have a higher incidence and mortality of perinatal pregnancies relative to twin-twin pregnancies, the correct diagnosis of chorionic and amniotic in the first trimester helps identify and strengthen high-risk twins , More effective diagnosis of twin complications, the choice of appropriate treatment of different complications. Therefore, if you can identify the twin chorionic sex, will have prenatal counseling and clinical treatment