Munsick R A
Obstet Gynecol. 1986 Mar;67(3):356-7.
During dilatation and suction or evacuation abortion operations, the umbilical cord can be delivered and sufficient fetal blood can be sampled to type for the Rho(D) and Du factors in about 30% of cases at 14 menstrual weeks of pregnancy. By 16 weeks, more than 75% can be sampled successfully. When cord blood can be Rh typed, about 40% of the fetuses of Rh negative women were found also to be Rh negative. In these cases, anti-Rho(D) immunoglobulin prophylaxis is unnecessary.
在扩张和吸引或刮宫流产手术过程中，在妊娠14周时，约30%的病例中可娩出脐带并采集足够的胎儿血液以检测Rho(D)和Du因子的血型。到16周时，超过75%的病例可成功采集。当能够对脐带血进行Rh血型鉴定时，发现Rh阴性女性的胎儿中约40%也是Rh阴性。在这些情况下，无需进行抗Rho(D)免疫球蛋白预防。
