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Validation of the Burns Specific Pain Anxiety Scale BSPAS and the Impact of Event Scale IES for Brazilians who suffered burns.

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Author(s):
Maria Elena Echevarría Guanilo
Total Authors: 1
Document type: Doctoral Thesis
Press: São Paulo.
Institution: Universidade de São Paulo (USP). Escola de Enfermagem (EE/SBD)
Defense date:
Examining board members:
Lidia Aparecida Rossi; Jordi Alonso Caballero; Maria Celia Barcellos Dalri; Rosana Aparecida Spadoti Dantas; Jayme Adriano Farina Junior
Advisor: Lidia Aparecida Rossi
Abstract

This descriptive, correlation and longitudinal study aimed to study the validity and reliability of the Burns Specific Pain Anxiety Scale-BSPAS, which assesses anxiety about painful procedures, and the Impact of Event Scale-IES, which assesses post-traumatic stress. Study participants were 91 individuals over 15 years of age, hospitalized at the Burns Unity of the Ribeirão Preto Medical School Hospital das Clínicas. The following steps were followed: 1st step: data collection about hospitalization and treatment. 2nd step: follow-up of painful manifestations for seven days, applying the Visual Analogue Scale for Pain at three different times each day: a) immediately before bathing and wound dressing (DIABC); b) immediately after bathing and wound dressing (DIDBC); and c) pain in the rest period, around 20:00h (DDPD). 3rd step: on the eighth day, application of the BSPAS Portuguese Version, IES Portuguese Version and Spielbergers State Anxiety Inventory (SAI). 4th step (including phases A and B): between the 4th and 6th month (phase A) and between the 9th and 12th month after the burn event (phase B), application of the IES-VP, Rosenbergs Self-Esteem Scale (RSES), the Beck Depression Inventory (BDI) and the SF-36. In the first three steps, study participants were 91 patients (64 men and 27 women). The mean burned body surface (BBS) was 18% (1-60%), with upper limbs (66; 72.5%), thorax (61; 67%) and head/face (43; 47.3%) as the most affected anatomical sites. The most common causal agents of the burns were hot fluids (15.4%) and inflammable agents, mainly alcohol (38.5%). In the 4th step, 77 patients participated in phase A and 76 in phase B. In convergent construct validity, the BSPAS-VP presented strong and positive correlations with the IES-VP (0.52; p<0.01), strong and moderate with the subscales that assess intrusive thoughts (0.54; p<0.01) and reactions of avoidance (0.37; p<0.01) and moderate correlations with the pain assessments: DIABC (0.32; p<0.01), DIDBC (0.31; p<0.01) and DDPD (0.31; <0.01). Total IES-VP presented moderate and positive correlations with the BDI (0.63; p<0.01), moderate and negative with the RSES (-0.58; p<0.01) and moderate to low and negative with the Pain (r=-0.24; p<0.05), Social Aspects (r=-0.34;p<0.01) and Mental Health (r=-0.27; p<0.05) domains between the 4th and 6th month, besides low correlation and little applicability to practice with the General Health State (r=-0.24; p<0.05) domain of the SF-36 between the 9th and 12th month. When applying the BSPAS-VP and IES-VP, higher mean scores were observed for women (55.15 and 63.96, respectively), among individuals with a BBS of more than 20% (54.90 and 62.98, respectively) and for people who mentioned visible scars (52.53 and 61.40, respectively). When differences were tested through Students t-test for independent samples, however, these were not statistically significant. In the main components analysis through the Varimax Rotation Matrix, IES-VP appeared as a bidimensional scale and BSPAS-VP as a unidimensional scale, in accordance with each scales original proposal. Both scales obtained a high Cronbachs Alpha, 0.90 for BSPAS-VP and 0.87 for IES-VP, showing strong internal consistency of its items. When the t-test for independent samples was applied, the IES-VP showed sensitivity to detect changes over time. It is concluded that the BSPAS-VP and the IES-VP are reliable and valid instrument to assess state-anxiety related to pain in burned patients and to assess the impact of the event, respectively. (AU)

FAPESP's process: 05/03113-4 - Validação da burns specific pain anxiety scale - BSPAS e da impact of event scale - IES
Grantee:Maria Elena Echevarria Guanilo
Support Opportunities: Scholarships in Brazil - Doctorate