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A new device to reduce the consumption of a halogenated anaesthetic agent*
Author(s) -
Enlund M.,
Wiklund L.,
Lambert H.
Publication year - 2001
Publication title -
anaesthesia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.839
H-Index - 117
eISSN - 1365-2044
pISSN - 0003-2409
DOI - 10.1046/j.1365-2044.2001.01900.x
Subject(s) - isoflurane , medicine , normocapnia , anesthesia , methoxyflurane , halothane , hypercapnia , acidosis
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.MAC‐hour −1 with the vaporiser, compared with 15.2 (3.0) ml.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%.