3Tung A, Tadimeti L, Caruana - Montaldo B, et al. The relation- ship of sedation to deliberteself - extubation [ J ]. Clin Anesth, 2001(13) :24 -9.
4Chiang AA, Lee KC, Lee JC, et al. Effectiveness of a continuous quality improvement program aiming to reduce unplanned extu- bation: A prospective study [ J ]. Intensive Care Med, 1996 ( 22 ) : 1269 -71.