Identificação da microbiota associada à pneumonia nosocomial presente em tubos orotraqueais usados por pacientes submetidos à ventilação mecânica no Hospital Regional de Patos-PB.

Abstract

Nosocomial pneumonia consists of a subclinical infection of the lung parenchyma which has, among its etiopathogenic factors, the colonization of the oropharynx by pathogenic bacteria such as Acinetobacter spp., Staphylococcus aureus, Escherichia coli, Klebsiella spp, Pseudomonas aeruginosa, Enterobacter spp., Proteus mirabilis and Streptococcus pneumoniae. This work sought to identify the presence of these pathogenic bacteria in the orotracheal tubes used by patients undergoing mechanical ventilation in the intensive care units (ICU) of the Regional Hospital Deputado Janduhy Carneiro. Six orotracheal tubes were collected over a period of six months, samples were cultivated in Blood Agar and Mac Conkey media, macroscopic evaluation, catalase test and microscopic evaluation of the cultivated colonies. Regarding the results, it was found that none of the samples had Staphylococcus aureus and hypotheses and paths were outlined for the identification of gram-negative bacilli (found in 61.9% of the samples), gram-negative bacilli and/or cocci ( 19.4%), gram-negative diplococci (9.52%), gram-positive bacilli (4.76%) and gram-positive cocci (4.76%). It was concluded that, although bacteria were identified whose macroscopic and microscopic aspects resemble those of microorganisms related to PAVM, further studies are needed to identify their genera and species.