A.应尽量鼓励病人咳嗽
B.吸痰前后提高给氧浓度
C.吸痰管直径不超过气管导管内径的2/3
D.一次持续吸引时间不超过15s
E.一般吸痰负压不超过300mmHg
A.20%~24%,1~2L/min
B.24%~30%,1~2L/min
C.30%~34%,2~3L/min
D.34%~40%,2~3L/min
A.24%~33%;1~3L/min
B.24%~33%;2~3L/min
C.25%~33%;1~3L/min
D.25%~33%;2~3L/min
A.1~2L/min
B.2~2.5L/min
C.1.5~2L/min
D.2~4L/min