Resumen

CASTRO CONSUEGRA, Millelys; TARTABULL POUTRIEL, Kiopper  y  NICOLAU PESTANA, Elizabeth. Isolated microorganisms in patients with infections associated to mechanical ventilation in the services of an intensive care unit. AMC [online]. 2010, vol.14, n.4. ISSN 1025-0255.

Background: the infection associated to mechanical ventilation is one of the complications faces the intensivist physician in his daily work, that is of great importance to achieve the isolation of germs responsible for those clinical entities and this way to be able to carry out an appropriate therapeutic work. Objective: to know the behavior of microorganisms responsible for infections associated to mechanical ventilation. Method: a retrospective descriptive study from January to December of 2007 was conducted, it were included all the patients underwent to invasive mechanical ventilation in the intensive care units, polytrauma ward and intermediate care units to which samples of secretions of the airway for culture were taken. Results: gram-negative germs in the three progressive care units prevailed; the Enterobacteria and Acinetobacter ssp strains were the most frequent as cause of associate infection to the mechanical ventilation. Pneumonia associated to mechanical ventilation prevailed over tracheobronchitis with forty-six and twenty-two cases respectively, in both enterobacteria as causal agent predominated. Pneumonia associated to tardive mechanical ventilation had bigger casuistics in comparison with the precocious one occupying Pseudomonas aeruginosa the 23.9% of the cases. Conclusions: infections by gram-negative predominated where the enterobacteria´s group was of greater representation. Pneumonia associated to mechanical ventilation had bigger percent of cases compared with tracheobronchitis. Pneumonia associated to tardive mechanical ventilation presented high percentage of cases being Pseudomonas aeruginosa an important germ in its cause.

Palabras clave : RESPIRATION ARTIFICIAL; GRAM-NEGATIVE BACTERIA; CROSS INFECTION>; EPIDEMIOLOGY DESCRIPTIVE.

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