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British Journal of Anaesthesia, 1980, Vol. 52, No. 2 223-227
© 1980 The Board of Management and Trustees of the British Journal of Anaesthesia

research-article

ADVERSE EFFECTS OF BUFFERED GLUTARALDEHYDE ON THE HEIDBRINK EXPIRATORY VALVE

S. M. MOSTAFA, M.B., CH.B.(CAIRO), M.R.C.S.(ENG.), L.R.C.P.(LONDON), F.F.A.R.C.S.(ENG.)

Selly Oak Hospital Birmingham B29 6JD

The effect of chemical disinfection of the Heidbrink expiratory valve in buffered glutaraidehyde (Cidex solution) was investigated. Cidex caused stickiness and increased the opening pressure and resistance of the valve to different gas flow rates. An electrolytic type of corrosion may also have occurred. However, autoclaving of the Heidbrink valve did not appear to cause corrosion or significant alteration of its opening pressure or resistance.


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