A escala de coma de Glasgow como indicador de mortalidade e qualidade de vida em vítimas de trauma cranioencefálico contuso / The Glasgow coma scale as an indicator of mortality and quality of Life in victims with blunt traumatic brain injury

AUTOR(ES)
DATA DE PUBLICAÇÃO

2010

RESUMO

The consequences of blunt traumatic brain injury go beyond high mortality to include, modifications in physical, cognitive and behavioral aspects, thus altering the Quality of Life of the victims. The Glasgow Coma Scale is scientifically recognized as a potential indicator to estimate prognosis and predict short and long term outcomes of blunt traumatic brain injury victims. Although it is a physiological index, and sensitive to changes of clinical variables, the Glasgow Coma Scale attempts to cause divergence in the relationship of values that can better predict clinical outcomes. The aims of this research are, to analyze the performance of three different scores of the Glasgow Coma Scale in the first 72 hours of in-hospital assistance in predicting Hospital Mortality and changes of the health status perception after trauma; to compare the predictive performance of these scores, and correlate them to quality of life subscales after one year of trauma. The Glasgow Coma Scale, chosen in this present study, include the score obtained after initial resuscitation; the highest value and the lowest value in the first 72 hours of in hospital assistance. The capacity of prognosis of the scores, were evaluated by the Receiver Operator Characteristic (ROC) curve. Quality of life was assessed by the Medical Outcome Study- a 36-item Short Form Health Survey (SF-36). All Glasgow Coma Scale scores were confronted with SF36 subscales. This study included 277 victims of different severity blunt traumatic brain injuries. The performance of the three scores, which were analyzed to predict Hospital Mortality, was moderate, with an area under the curve between 0.74 and 0.79. The area under the curve for change of the health status perception, after one year of trauma, ranged from 0.63 to 0.71. There were no significant differences between the Glasgow Coma Scale scores studied in both analyses. A significant, but weak correlation was observed between the Glasgow Coma scale scores and the subscales of SF-36 Physical Functioning, Physical Role and Social Functioning. The worst Glasgow Coma Scale score, obtained in the first 72 hours after trauma, correlated to the dominions of the SF-36 subscales. These findings suggest that any one of the 3 scores studied, can be applied in clinical practice to predict the outcome of victims with blunt traumatic brain injuries, taking into consideration its moderate discriminatory power.

ASSUNTO(S)

glasgow coma scale qualidade de vida quality of life escala de coma de glasgow mortality trauma severity indexes traumatismos encefálicos mortalidade Índices de gravidade prognóstico prognosis brain injuries

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