L/S ratio waslower in infants with asphyxia than that in the normalsubjects (t= . 0, P<0. 0) and it was signifi cantlyincreased in neonates born to mothers with toxemia ofpregnancy compared with normal infants (t= . 0,P<0. 0).
L/S ratio waslower in infants with asphyxia than that in the normalsubjects (t= . 0, P<0. 0) and it was signifi cantlyincreased in neonates born to mothers with toxemia ofpregnancy compared with normal infants (t= . 0,P<0. 0).
足月窒息儿L／S比值明显低于正常对照组（t＝．0，P＜0．0）； 患妊高征母亲所生新生儿L／S比值明显高于对照组（t＝ ．0 ，P＜0．0），提示母亲患妊高征有使胎儿肺成熟加速的倾向。