A case of carrier gas confusion: Unintentional use of carbogen

Published:December 28, 2022DOI:
      A veterinary practice unintentionally used carbogen, a mixture of 95% oxygen and 5% carbon dioxide, as an anaesthetic carrier gas over a 5 month period. The error went unnoticed until the practice obtained a multiparameter monitor with capnography. Fractional concentration of inspired carbon dioxide was persistently elevated in all animals despite new non-rebreathing systems with fully functional one-way valves being used, adequate fresh gas flow rates and active soda lime in the circle systems. A registered veterinary nurse (RVN) eventually discovered the source of the problem and was able to rectify the mistake.
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