1　临床资料　患儿,女,生后1h因早产低体质量,呼吸不规则入院.该患儿系第3胎第1产,孕32wk剖宫产,Apgar评分1min4分,5min6分,10min8～9分.患儿母亲29岁,双子宫.前2胎因左侧小子宫妊娠而自然流产,孕7mo时患血小板减少性紫癜、重度妊高征,曾接受过血浆置换治疗.患儿出生后立即转入 1 clinical data of children, women, 1h after birth due to low birth weight premature birth, irregular breathing admission to the hospital.The third fetus in the first trimester of pregnancy, 32wk cesarean section, Apgar score 1min4min, 5min6min, 10min8 ~ 9 The children with a mother 29 years old, double uterus .Before the first 2 small spontaneous abortion due to the left small uterine pregnancy, pregnancy 7mo thrombocytopenic purpura, severe pregnancy-induced hypertension, had received plasma exchange therapy. Turn into