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Canadian Journal of Anesthesia, Vol 27, 510-511, Copyright © 1980 by Canadian Anesthesiologists' Society

Anaesthetic Machine Pipeline Inlet Pressure Gauges do not Always Measure Pipeline Pressure

DOUGLAS B. CRAIG 1 and JOHN LONGMUIR 1

1 Department of Anaesthesia, Health Sciences Centre, 700 William Ave., Winnipeg, Manitoba, R3E 0Z3

Some anaesthetic gas machines have pipeline inlet pressure gauges which indicate the higher of either pipeline pressure, or machine circuit pressure (the pressure distal to the pressure reducing valve, and proximal to the flowmeter control valve). Failure by the operator to appreciate this feature may in specific circumstances lead to a delayed appreciation of pipeline malfunction or disconnection. The Canadian Standards Association Z168.3-M1980 Anaesthetic Gas Machine Standard requires pipeline inlet gauges which measure only pipeline (hose) pressure. Existing machines should be modified to accommodate this requirement.






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Copyright © 1980 by the Canadian Anesthesiologists' Society.