(二)临床表现 1、进行性呼吸困难,生后6小时内出现 2、呻吟、三凹征、青紫 3、两肺呼吸音减弱 4、血气分析:呼吸衰竭
（二）临床表现 1、进行性呼吸困难，生后6小时内出现 2、呻吟、三凹征、青紫 3、两肺呼吸音减弱 4、血气分析：呼吸衰竭
RDS- pathology Solid, airless organ congested, dark purplish-red (liver-like) I Microscopically marked capillary and venous congestion I Cellular infiltrate and edema in interstitium ■ Hyaline membrane formation
RDS - pathology Solid, airless organ, congested, dark purplish-red (liver-like) Microscopically: marked capillary and venous congestion Cellular infiltrate and edema in interstitium Hyaline membrane formation