Factors associated with nosocomial infection in the elderly in the Intensive Care Unit

  • Laelson Rochelle Milanês Sousa Universidade Federal do Piauí
  • Luana Kelle Batista Moura
  • Álvaro Francisco Lopes de Sousa
  • Maria Eliete Batista Moura
  • Glícia Cardoso Nascimento
  • Artur Acelino Francisco Luz Nunes Queiroz
  • Francisca Tereza Coelho Matos
  • Thiago Lima Monte

Abstract

Background: The elderly have increased vulnerability to disease and exposure to hospital infections.


Aims: The study aims to evaluate the clinical and epidemiological factors associated with nosocomial infection in the elderly.


Methods: A retrospective study with a population of 625 elderly patients admitted to intensive care units and a sample of 308 elderly who developed nosocomial infection from January 2012 to June 2015.


Results: A total of 49.7% of the elderly presented a growth of micro-organisms in tracheal aspirates. The diseases classified as "other" increased likelihood of tracheal infection (3.61, 95% - CI 1.84 to 7.10; p = 0.005) and the probability of growth of micro-organism in the culture performed elsewhere - general (8.96, 95% - CI 3.03 to 26.49; p = 0.005). Surgical procedures increased the chance of growth of micro-organisms in tracheal secretion culture (OR 1.96, 95% CI 1.11 to 3.48) and surgical site culture (OR 5.06, 95% CI 1, from 76 to 14.55). The neurological disease increased the chance of growth of micro-organisms in the cultures of tracheal secretions, blood and general (OR 3.80, 95% CI 1.22 to 11.83; OR 3.27, 95% CI 1.24 - 8.66; OR 15.61, 95% CI 4.78 to 50.98). The pneumothorax increases by four times the probability of growth of micro-organisms in the catheter tip (OR 4.17, 95% CI 1.24 to 13.97). Chronic and acute renal failure and other diagnoses increased by eighteen times the chance of growth of micro-organisms in general culture (OR 18.06, 95% CI 3.63 to 89.86).


Conclusion: The main risk factors for nosocomial infection of elderly in the Intensive Care Unit are chronic and acute renal failure, neurological diseases and surgical procedures and must be adopted a policy of prevention and control of nosocomial infection in the treatment of the elderly.


Keywords: Elderly, Cross infection, Intensive care.

Published
Feb 9, 2017
How to Cite
SOUSA, Laelson Rochelle Milanês et al. Factors associated with nosocomial infection in the elderly in the Intensive Care Unit. International Archives of Medicine, [S.l.], v. 9, feb. 2017. ISSN 1755-7682. Available at: <http://imed.pub/ojs/index.php/iam/article/view/2245>. Date accessed: 18 nov. 2017. doi: http://dx.doi.org/10.3823/2269.
Section
Infectious Diseases

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