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The Venturi Anaesthesia Circuit III Carbon Dioxide Elimination
Author(s) -
Andersen A. P. D.,
Christensen K. J. S.,
Jørgensen S.
Publication year - 1985
Publication title -
acta anaesthesiologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.738
H-Index - 107
eISSN - 1399-6576
pISSN - 0001-5172
DOI - 10.1111/j.1399-6576.1985.tb02199.x
Subject(s) - venturi effect , soda lime , medicine , lime , anesthesia , carbon dioxide , nitrous oxide , charge (physics) , materials science , mechanical engineering , organic chemistry , composite material , chemistry , physics , metallurgy , quantum mechanics , engineering , inlet
The Venturi circuit was studied with regard to CO 2 elimination in a model experiment. A mean concentration of 0.6% CO 2 in the fresh gas supply to the patient was accepted. The experiments demonstrated that a sodalime charge of 200 g will cover the elimination requirements of CO 2 in a Venturi circuit for any patient below 100 kg b. w. for a period of 3 h, while a soda‐lime charge of 300 g will suffice for 5 h. The utilization of the soda lime charge is of the same order of magnitude as that of the much larger canisters used in circle circuits. In the Venturi circuit, the size of the soda‐lime charge can be adjusted to suit the body weight of the patient and the expected length of the anaesthetic procedure. One soda‐lime charge for each anaesthetic procedure is preferable from the point of view of hygiene. The charge should not be less than 200 g.