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Contamination and resterilization of the bain circuit


Fifty Bain circuits were tested for contamination following single patient use. A contamination rate of 8 per cent was found. Two methods of resterilization were examined. Sterilization by activated glutaraldehyde proved unsatisfactory, while ethylene oxide sterilization was found to be an effective method which produced no detectable adverse physical or chemical alterations of the circuits.


Une recherche de contamination effectuée sur 50 circuits Bain après usage chez un seul patient, a mis en évidence une contamination bactérienne dans quatre cas. Deux des six circuits contaminés ont continué à donner des cultures positives après tentative de les stériliser au moyen de glutaraldehyde activée. Vingt cinq circuits contaminés ont tous été démontrés bien stériles après stérilisation à l’oxyde d’éthylène. Dix circuits stérilisés cinq fois de suite à l’oxyde d’éthylène sont demeurés mécaniquement inchangés. Les auteurs discutent de la restérilisation de l’équipement “à usage unique” et concluent que l’oxyde d’éthylène est une méthode satisfaisante de restérilisation des circuits Bain.


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Correspondence to A. C. Enright or R. L. Moore or F. L. Parney.

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Enright, A.C., Moore, R.L. & Parney, F.L. Contamination and resterilization of the bain circuit. Canad. Anaesth. Soc. J. 23, 545 (1976).

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  • Ethylene Oxide
  • Tracheal Stenosis
  • Contamination Rate
  • Bain Circuit
  • Cross Infection