A new device to reduce the consumption of a halogenated anaesthetic agent* : apparatus

✍ Scribed by M. Enlund; L. Wiklund; H. Lambert

• Book ID: 104456587
• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 142 KB
• Volume: 56
• Category: Article
• ISSN: 0003-2409
• DOI: 10.1046/j.1365-2044.2001.01900.x

✦ Synopsis

We report the first clinical application of a new anaesthetic agent-saving device. The principles of a heat-moisture exchanger have been further developed to create a device that reduces inhalational agent consumption. Sixteen patients were randomly allocated to receive isoflurane through either a vaporiser or through the agent-saving device. A coaxial Mapleson D system (Bain) was used in both groups. A standard ventilatory setting was used, aiming for normocapnia. Mean (SD) isoflurane consumption was 24.5 (2.8) ml x MAC-hour(-1) with the vaporiser, compared with 15.2 (3.0) ml x MAC-hour(-1) with the new device (p < 0.05). This corresponded to a 40% saving in the consumption of isoflurane. The amount of isoflurane that was scavenged to the atmosphere was reduced by an average of 55%.