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Vol. 30. Issue 10.
Pages 485-488 (December 1994)
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Vol. 30. Issue 10.
Pages 485-488 (December 1994)
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Desinfección del broncofibroscopio con glutaraldehído fenolato a la dilución 1:8
Bronchofibroscope disinfection with phenolated glutaraldehyde in a 1:8 solution
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G. Rodríguez-Froján, J. Castella1, C. Puzo, C. Burgués, N. Vázquez
Departamento de Neumología. Hospital de la Santa Creu i Sant Pau. Barcelona
P. Coll*, M. Garrigó*, C. Moreno*
* Servicio de Microbiología. Hospital de la Santa Creu i Sant Pau. Barcelona
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Se ha valorado la eficacia del glutaraldehído fenolato a la dilución 1:8 en la desinfección de broncofibroscopios altamente contaminados con Serratia marcescens y Pseudomonas aeruginosa.

Para ello, se ha contaminado un broncofibroscopio Olimpus BF-P10 con muestras artificiales que contenían uno de los microorganismos mencionados a concentraciones próximas a 108 unidades formadoras de colonias/mililitro (ufc/ml). A continuación, se ha lavado con agua y jabón y, seguidamente, se ha sumergido en glutaraldehído fenolato a la dilución 1:8. Se han tomado muestras para cultivo después de la contaminación, después de la limpieza y a los 10, 15 y 30 minutos de inmersión en el desinfectante. Se han contabilizado las ufc/ml en los cultivos y se ha considerado fallo de desinfección ≥ 1 ufc/ml al final de cada experiencia. Se han realizado 20 experiencias, diez con cada microorganismo.

La limpieza del broncofibroscopio produjo una importante eliminación de microorganismos y después de 10 minutos en glutaraldehído fenolato no se observaron crecimientos de colonias en los cultivos.

En conclusión, la inmersión en glutaraldehído fenolato a la dilución 1:8 durante un mínimo de 10 minutos, después de una limpieza rigurosa, es un método válido para conseguir una desinfección completa de broncofibroscopios muy contaminados con S. marcescens y P. aeruginosa.

Palabras clave:
Broncofibroscopio
Desinfección
Glutaraldehído fenolato

We evaluated the efficacy of phenolated glutaraldehyde in a 1:8 solution for the disinfection of bronchofibroscopes that were highly contaminated with Serratia marcescens and Pseudomona aeruginosa.

An Olympus BF-P10 bronchofibroscope was contaminated with artificial samples containing one of the aforementioned microorganisms in concentrations nearing 108 colony forming units per milliliter (cfu/ml). The instruments were then washed with soap and water and submerged in a 1:8 solution of phenolated glutaraldehyde. Samples were taken for culturing after contamination, after washing, and after 10, 15 and 30 min in the disinfectant solution. The level of cfu/ml in the cultures was measured and the definition of failure-to-disinfect was a finding of ≥ 1 cfu/ml after each experimental procedure. Twenty procedures, 10 for each microorganism, were carriet out.

Washing of the bronchofibroscope afforded significant elimination of microorganisms and no colony growth was observed in cultures after 10 min submersion in phenolated glutaraldehyde.

We conclude that immersion in a 1:8 solution of phenolated glutaraldehyde after careful washing is a valid way to disinfect bronchofibroscopes that are highly contaminated with S. marcescens and P. aeruginosa.

Key words:
Bronchofibroscope
Disinfection
Phenolated glutaraldehyde
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Copyright © 1994. Sociedad Española de Neumología y Cirugía Torácica
Archivos de Bronconeumología
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