[Using tools for pain perception assessment in hospitalized pre-school children undergoing painful procedures].

The aim of this study was evaluate the utilization of tools for pain perception assessment in 41 hospitalized pre-school children submitted to painful procedures: care of wounds or blood extraction. The utilized tools were the faces scale, behavioral indicators and words which describe the pain. Most of the pre-schoolers understood and correctly answered to the faces scale, which can be noticed by the crescent movement 0 (no pain) 4 (maximum pain) during the choice of faces before and after the painful procedure. Crying, immortality and forehead wrinkling were the predominant behavioral indicators, intensified during the procedure. Pre-schoolers verbalizations about their pain showed up to be concrete terms or evaluative-indicative nature, resulting in variable or weakly precise concepts.