妊娠期妇女感染了细小病毒B_(19),其自然流产率增加,后代有可能发展成为胎儿水肿。据认为胎儿水肿主要是由于骨髓发育不全所致贫血引起的,因而有人推荐采用子宫内输血进行治疗。然而,子宫内输血对细小病毒B_(19)感染所致胎儿水肿病例是否有益,以及由此获得的益处是否超过手术操作带来的危险尚不清楚。1993年英格兰和威尔士地区的细小病毒B_(19)感染流行,为研究子宫内输血对水 Pregnant women infected with parvovirus B_ (19), the spontaneous abortion rate increased, future generations may develop into fetal edema. It is believed that fetal edema is mainly due to anemia caused by myelodysplasia, which was recommended for the treatment of intrauterine transfusion. However, whether intrauterine blood transfusion is beneficial for fetal edema due to parvovirus B 19 infection and whether the resulting benefits outweigh the risks posed by surgical procedures remains unclear. In 1993, the parvovirus B_ (19) infection in England and Wales was prevalent. In order to study the effects of intrauterine blood transfusion on water