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The climatisation of anesthetic gases under conditions of high flow to low flow.

Authors
Type
Published Article
Journal
Acta anaesthesiologica Belgica
Publication Date
Volume
41
Issue
3
Pages
189–200
Identifiers
PMID: 2260425
Source
Medline

Abstract

The aim of climatisation of anesthetic gases in prolonged anesthesia is to maintain tracheobronchial climate comparable to that of spontaneous nasal breathing. The humidity and temperature of inspired gases attained in the circle system at a fresh gas flow of 6.0, 3.0 and 1.5 l/min are inadequate for prolonged anesthesia. According to the results of our study with the scanning electron microscope, the minimal flow technique (0.5 l/min) leads to major improvement of heat (28 to 32 degrees C) and moisture (20 to 27 mg H2O/l) conditions of anesthetic gases in anesthesia systems.

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