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The effect of desflurane on filtration performance of breathing system filters

Poonawala, Y., Wilkes, Antony Robert, Cann, Clare and Hall, Judith Elizabeth 2010. The effect of desflurane on filtration performance of breathing system filters. Anaesthesia 65 (8) , pp. 831-835. 10.1111/j.1365-2044.2010.06419.x

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Abstract

This study assessed the effect of desflurane on the filtration performance of six breathing system filters intended for use with adults. Three filters contained an electrostatic filter material and three contained a pleated glass fibre filter material. Five samples of each model of filter were exposed to 6% v/v of desflurane for 1 h, 12% v/v of desflurane for 1 h, 12% v/v of desflurane for 4 h and air only for 1 h. Five samples of each filter were also tested without exposure to any vapour or air. The filtration performance was measured by challenging each filter with an aerosol of sodium chloride particles using a Moore’s test rig. Penetration of particles through the electrostatic filters increased following exposure to a higher concentration of desflurane for a longer duration (p < 0.001). The effect on two of the pleated filters was not significant (p = 0.55 and p = 0.64). The effect on the remaining pleated filter was significant (p < 0.001) but small. The efficiency of some filters decreases when they are exposed to high concentrations of desflurane for a long duration. This effect appears more marked in electrostatic filters compared with pleated filters.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Subjects: R Medicine > RZ Other systems of medicine
Additional Information: Presented in part at the Society of Anaesthetists of Wales Spring Scientific meeting, Brecon, Wales, March 2008, and the European Society of Anaesthesiology, Copenhagen, Denmark, May 2008.
Publisher: Wiley-Blackwell
ISSN: 0003-2409
Last Modified: 08 Jan 2019 21:54
URI: http://orca.cf.ac.uk/id/eprint/29534

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