Bacterial contamination of compressed air for medical use

Bjerring, Peter; Øberg, B.

doi:10.1111/j.1365-2044.1986.tb13169.x

Cited by 13 publications

(3 citation statements)

References 18 publications

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“…Outra fonte descrita de contaminação dos respiradores é o ar comprimido medicinal, que, normalmente, obedece a normas técnicas de pureza química, mas não bacteriológica. É relatado que, dependendo da fonte, 70 a 80% das amostras de ar fornecem culturas positivas para germes como Pseudomonas, Staphylococcus albus e Corynebacterium 17 . Também foi encontrada contaminação na fonte de oxigênio, como publicado por Moffit et al, que encontraram 13 culturas positivas para bactérias em 32 amostras de oxigênio 5 .…”

Section: Discussionunclassified

Aerossol bacteriano gerado por respiradores mecânicos: estudo comparativo

Dias¹,

Pellacine²,

Zechineli³

1997

Rev. Assoc. Med. Bras.

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RESUMO -Respiradores mecânicos emitem aerossóis que podem estar colonizados com bactérias.OBJETIVO. Estudar a contaminação ambiental gerada por respiradores, comparando-se dois sistemas de umidificação.MÉTODOS. Realizaram-se 51 estudos, comparandose a colonização dos aerossóis emitidos pela válvula expiratória dos aparelhos de ventilação mecânica, sendo em 31 com nebulizadores convencionais e em 20 com condensadores higroscópicos, em quinze minutos de observação.RESULTADOS. Houve emissão de bactérias para o ambiente, pela válvula expiratória, de 32,2% de respiradores equipados com sistema de nebulização convencional e de 5% com condensador (p = 0,0340).CONCLUSÃO. A umidificação da mistura gasosa com o uso de condensadores pode ser um meio eficiente de reduzir a contaminação bacteriana ambiental.

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Section: Discussionunclassified

Aerossol bacteriano gerado por respiradores mecânicos: estudo comparativo

Dias¹,

Pellacine²,

Zechineli³

1997

Rev. Assoc. Med. Bras.

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“…It has been recently acknowledged that microorganisms can be a contamination hazard in gases (5,6), although no episode relating to contamination of medicinal gases by pathogens has been reported to this date (7). Therefore, the FDA considers Medicinal Air USP as pharmaceutical product.…”

Section: Introductionmentioning

confidence: 99%

Microbial contamination of central supply systems for medical air

Andrade¹,

Brown²

2003

Braz. J. Microbiol.

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There are many standards and recommendations for breathing air quality associated with respiratory protection equipment, but little has been done regarding the possible microbial contamination of medical air. The present study demonstrates quantitatively and qualitatively that pipelines might be incriminated as source of microbial contamination of compressed and synthetic air for medical use. Air samples were drawn into an especially pressure-resistant device and the bacterial and fungi contents were identified after growth on agar plates. The bacterial flora isolated from peripheral air outlets was virtually the same as that found in the central air-generating installations, consisting of a mixture of pathogens and normal skin bacteria. Several factors contributing to microbial contamination of medical air are mentioned and preventive measures are discussed.

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“…It has recently been demonstrated that locally manufactured compressed air for medical use may be a source of bacterial contamination of patients needing ventilatory assistance with air-oxygen mixtures (1).…”

mentioning

confidence: 99%

Comparison of microbiological contents of compressed air in two Danish hospitals. Effect of oil and water reduction in air‐generating units

Øberg

Bjerring

1986

Acta Anaesthesiol Scand

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In a comparative study microbiological contamination of compressed air for medical use produced in oil-lubricated and oil-free compressors was investigated. Significantly lower levels of bacterial contamination were observed in the air produced by oil-free compressors; but if the air is transported to operating rooms and intensive care units through extensive pipeline systems previously contaminated by oil-lubricated compressors, the bacterial count at peripheral air outlets remains unchanged.

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Bacterial contamination of compressed air for medical use

Cited by 13 publications

References 18 publications

Aerossol bacteriano gerado por respiradores mecânicos: estudo comparativo

Aerossol bacteriano gerado por respiradores mecânicos: estudo comparativo

Microbial contamination of central supply systems for medical air

Comparison of microbiological contents of compressed air in two Danish hospitals. Effect of oil and water reduction in air‐generating units

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