Humidity and temperature changes during low flow and closed system anaesthesia

J. A. Aldrete, P. Cubillos, Duane L Sherrill

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Abstract

Water humidity and temperature were measured in the proximal end of the inspiratory limb in anaesthetic circuits used to anaesthetize three groups of adult patients using various fresh gas flows (FGF). Humidity increased as FGF's were lowered, with 98% water humidification achieved when FGF's of less than 0.5 l/min were administered. Temperature at the same site changed about 1-2.5°C in inverse proportion to the volume of FGF. This advantage of closed system and low flow anaesthesia is a further reason for their wide-spread utilization.

Original languageEnglish (US)
Pages (from-to)312-314
Number of pages3
JournalActa Anaesthesiologica Scandinavica
Volume25
Issue number4
Publication statusPublished - 1981
Externally publishedYes

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ASJC Scopus subject areas

  • Anesthesiology and Pain Medicine

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