1Klein DG,Dumpe M,Katz E,et al. Pain assessment in the intensivecare unit :development and psychometric testing of the nonverbal painassessment tool[j]. Heart Lung,2010,39(6):521-528.
2Chen J. History of pain theories [j ].Neurosci Bull, 2011,27 ( 5 ) :343 -350.
3Hen- K,Coyne PJ,McCaffery,et al. Pain assessment in the patient un -able to self - report :position statement with clinical practice recommen -dations[ J ].Pain Manag Nurs,2011,12(4) :230- 250.
4Arif- Rahu M,Grap MJ. Facial experience and pain in the critically illnon - communicative patients :state of science review[ J ] .Intensive CritCare Nurs, 2010,26(6) :343 - 352.
5Pain terms: a list with definitions and notes on usage. Recommendedby the IASP Subcommittee on Taxonomy [J].Pain, 1979,6(3) :249.
7Gfelinas C,Fillion L, Puntillo KA. Item selection and content validityof the Critical Care Pain Observation Tool for non verbal adults [j]jAdv Nurs,2009,65(1):203-216.
8Gfelinas C,Fillion L,Puntillo KA,et al. Validation of the critical - carepain observation tool in adult patients [j]. Am J Crit Care,2006,15(4):420-427.
