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Factores relacionados con la contaminación microbiológica de sitio quirúrgico en pacientes traqueotomizados / Factors related with microbiological contamination of surgical site in patients undergoing tracheotomy
Resumen
Resumen
Introducción: la traqueotomía es un procedimiento común; sin embargo, la contaminación microbiológica del sitio quirúrgico puede aumentar la morbimortalidad. Hasta el 90% de los pacientes presentan un cultivo positivo de la vía respiratoria. Como factores relacionados, resaltan la falta de recambio de cánulas traqueales y las infecciones de vías aéreas bajas. Es conveniente identificar la contaminación microbiológica de secreción traqueal del sitio quirúrgico y el microorganismo asociado.
Objetivo: determinar los factores relacionados con la contaminación microbiológica del sitio quirúrgico.
Material y métodos: se hizo un estudio de cohorte prospectiva que incluyó a pacientes sometidos a traqueotomía. Se tomó cultivo por hisopado directo de secreción traqueal durante la cirugía y del sitio quirúrgico 5 días después.
Resultados: la muestra inicial mostró contaminación en 58.3% de los pacientes y a los 5 días postquirúrgicos en 80.6%, con incidencia de contaminación de 22.3%. Inicialmente se aisló Pseudomonas aeruginosa en 13.9% de los casos, Klebsiella pneumoniae en 11.1% y Enterobacter spp. en 11%. Al quinto día se aisló Klebsiella pneumoniae en 25% de los casos, Acinetobacter baumannii en 11.1% y Pseudomonas aeruginosa en 11.1%.
Conclusiones: la frecuencia de contaminación microbiológica es alta y se encontraron principalmente Staphylococcus aureus, Klebsiella pneumoniae y Pseudomonas aeruginosa. No se identificaron factores de riesgo para la contaminación postquirúrgica.
Abstract
Background: Tracheotomy is a common technique; however, microbiological contamination of the surgical site can increase morbimortality. Up to 90% of patients present a positive culture of the airway. Among the most important related factors is the lack of tracheal cannula replacement and lower airway infections. It is convenient to identify microbiological contamination of surgical site in tracheal secretions samples and the specific microorganism associated.
Objective: To determine the factors related to microbiological contamination of surgical site.
Material and methods: A prospective cohort study which included patients undergoing tracheotomy was carried out. Tracheal secretion was sampled by direct swabbing for culture during surgery and from the surgical site 5 days after.
Results: The initial report showed contamination of samples in 58.3%, and 5 days after in 80.6%, with an incidence of contamination of 22.3%. Initially the main agents identified were Pseudomonas aeruginosa in 13.9% of the cultures, Klebsiella pneumoniae in 11.1% and Enterobacter spp. in 11%. On day 5, the most common agents were Klebsiella pneumoniae in 25% of the cases, Acinetobacter baumannii in 11.1% and Pseudomonas aeruginosa in 11.1%
Conclusions: The frequency of microbiological contamination is high. The main agents were Staphylococcus aureus, Klebsiella pneumoniae and Pseudomonas aeruginosa. No risk factors for the presence of post-tracheotomy contamination were identified.
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