Application research on three kinds of pressure sore risk assessment scale for patients in ICU in department of neu-rosurgery

Chen Xiaoyan

doi:10.3969/j.issn.1009-6493.2016.09.016

Abstract：Objective:In order to study the reliability and validity of Braden scale,Norton scale and Waterlow pressure sore risk assessment scale in ICU patients in Department of neurosurgery.Methods:A total of 121 cases of patients without pressure sore before admission were selected in ICU in department of neurosurgery in affilia-ted hospital of Nantong university.Two researchers used 3 kinds of scales to assess their risk of pressure sores. Cronbach,s alpha coefficient was used to evaluate the internal consistency reliability of the scales.The intraclass correlation coefficient was used to evaluate the reliability of scales.The sensitivity,specificity and the area un-der the ROC curve (AUC)were used to assess the predictive validity of scales.Results:Cronbach’s alpha coeffi-cient of Braden scale,Norton scale and Waterlow scale were respectively 0.459,0.397 and 0.31 1.ICC were re-spectively 0.79,0.89 and 0.78.AUC of the Braden scale was 0.365.When the boundary diagnostic values of the high and low risk population was 10.5,the sensitivity was 36.4% and the specificity was 47.5%.AUC of the Norton scale was 0.475.When the boundary diagnostic values of the high and low risk population was 10.5,the sensitivity was 59.1%,specificity was 38.4%.AUC of the Waterlow scale was 0.468.When the boundary diag-nostic values of the high and low risk population was 20.5,the sensitivity was 54.5% and the specificity was 47.5%.Conclusion:Braden scale,Norton scale and Waterlow scale had better reliability among raters and poor internal consistency reliability.Compared with the other two scales,t he predictive validity of Waterlow scale was better.In order to study the pressure ulcer prediction tool for patients in ICU in department of neurosurger-y more accuratedly and suitablly,it suggested that further study to revise the entries of Waterlow scale.