2Casbolt S. Communicating with the ventilated patient:A literature review[J]. Nurs Crit Care,2002,7(4): 198- 202.
3McKinley S, Nagy S, Stein- Parbury J. Vulnerability and security in seriously ill patients in intersive eare[J]. Intersive Crit Care Nuts,2002,18(1) :27 - 36.