α-地中海贫血是一种遗传性疾病,在我国南方地区较多见,其主要特征是16号染色体α-珠蛋白基因缺失所致的α-珠蛋白合成障碍。若夫妇均为α-珠蛋白基因缺失者,虽无临床症状,但其子代仍可发生α-地中海贫血,甚至为水肿胎儿,死于宫内,因此妊娠后应进行产前诊断,了解胎儿是否发病。诊断方法为取早孕绒毛作DNA分析,又称基因诊断。如妊娠4月以上,无 Alpha-thalassemia is a genetic disease, more common in southern China, its main feature is the lack of α-globin gene on chromosome 16 due to α-globin synthesis obstacles. If the couple are alpha-globin gene deletion, although no clinical symptoms, but their offspring can still occur in alpha-thalassemia, or even edema of the fetus, died of intrauterine, so after pregnancy should be prenatal diagnosis, understanding of the fetus Whether the disease. Diagnostic methods for early pregnancy villus DNA analysis, also known as genetic diagnosis. If more than 4 months of pregnancy, no