Avaliação das variáveis relacionadas ao desmame em idosos internados na UTI: um estudo comparativo com indivíduos não idosos

Abstract

The ageing promotes morphological and physiological changes throughout the body, making it fragile. With ageing, the physiological and anatomical impairments of the respiratory system may promote physical and functional changes responsible for facilitating the development of respiratory failure, resulting in stays in intensive care and invasive mechanical ventilation. In order to determine which variables were associated to the successful weaning from mechanical ventilation in elderly and non-elderly patients, we evaluated 331 patients through a retrospective cohort in three intensive care units of the Hospital de Clínicas Niterói, Rio de Janeiro, Brazil. The Prevalence of the successful weaning in the entire sample evaluated was 83.7%. The results, after multivariate analysis, showed as independent variables associated with weaning in total sample and in patients aged < 70 years old, APACHE II and Integrative weaning índex (IWI). In patients aged > 70 years old, IWI was the single independent respiratory variable found related to the successful weaning. In conclusion, age presented no influence on weaning outcome. The IWI showed to be the main variable of weaning outcome in elderly patients.