一对夫妇曾生过一个猫叫综合征患儿,第二胎为 HbBart’s 水肿综合征,现又怀孕,请问父母及患儿的遗传型及患儿的发病机理?怀孕的胎儿患病可能情况如何?怎样做好防治工作?猫叫综合征(5P~-综合征)是属染色体结构畸变所引起的疾病。此病较少见,只占新生儿的1/5万,患者女性多于男性。患儿 A couple had had a cat called syndrome, the second child was HbBart’s edema syndrome, and now pregnant, may I ask the genetic patterns of parents and children and the pathogenesis of children? Pregnant fetus may be sick How to do a good job in prevention and treatment? Cat syndrome (5P ~ - syndrome) is a chromosomal aberration caused by disease. The disease is rare, accounting for only 1/5 million newborns, more women than men. Children