• V De Castro, J M Puizillout, P Baguenard, Y Wioland, V Billard, and J L Bourgain.
• Service d'anesthésie-réanimation, institut Gustave-Roussy, 39, rue Camille-Desmoulins, 97800 Villejuif, France.
• Ann Fr Anesth Reanim. 2003 Jun 1; 22 (6): 499-504.

ObjectiveTo assess the incidence and the causes of failures of anaesthesia machines in relation to aging. Study design. - Prospective survey from january 1996 to july 2000.Material And MethodsThe causes (mechanical or electronic), the moment of identification (checklist, maintenance operation or quality-control operation) of each anaesthetic machine failure, the repair cost and the maintenance cost of 14 anaesthetic machines have been collected and entered into a database.ResultsOver 31,948 anaesthesia delivered during the period of the study, 614 failures have been declared: 53% were related both to mechanical problems or monitoring failure and 40% were identified during the pre-operative checklist. In half of the cases, a specially trained anaesthetic nurse was able to correct the failure in the operating theatre. The annual rate of anaesthetic machine failure remained stable over the study period and the annual maintenance cost is approximatively 10% of the initial machine value. No procedure was cancelled because of a machine technical failure.ConclusionAnaesthetic machine failure rate change according to the time should not be criteria for remplacement if rigorous quality control and maintenance operation are used.

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