6Johanna F, Ruud H, Theo Dassen. Pressure ulcer risk assessment immediately after cardiac surger dose it makea difference ? A com- parison of three pressure ulcer risk assessment instruments within a cardiac surgery population [J] Nursing in Critical Care, 2007,12 (1) ：42 - 49.
7US. Department of Health and Human Services Pressure ulcers in adults prediction and prevention[M]. Rockville:Maryland AHCPR Publication, 1992 : 13 - 35.
8Waterlow J. Pressure sores: A risk assessment card [J]. Nurs Times, 1985,81 (48) : 49 - 55.
10Jun S,Jeong I. Validity of pressure ulcer risk assessment scale: Cubbin and Jackon, Braden and Douglas scale [J] International Journal of Nuring Studies, 2004,41(2) : 199 - 204.
