6Walsh J S, Plonczynski D J. Evaluation of a protocol for prevention of facility-acquired heel pressure ulcers[J]. J Wound Ostomy Continence Nuts, 2007,34 (2) : 178-183.
7Marilyn K G,Janet B, Nancy B. Preventing heel break- down[J]. Orthop Nurs,2000,19(5) :63-69.
8Bergstrom N,Demuth P J,Braden B J. A clinical trial o{ the braden scale for predicting pressure sore risk[J]. Nurs Clin North Am,1987,22(2):417-428.
9Evonne F, Suzy S W,James B. Practice recommendations for preventing heel pressure ulcers[J]. Ostomy Wound Manage,2008,54(10):2-15.
10Gallagher P, Barry P, Hartigan I, et al. Prevalence of pressure ulcers in three university teaching hospitals in Ireland[J]. J Tissue Viability, 2008,17(4) : 103-109.