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Sudden interruption of gas flow through a Schrader oxygen coupler unit
Abstract:
The flow of oxygen to an anaesthetic gas machine suddenly and completely stopped during the course of a general anaesthetic. The cause of the failure was traced to a Schrader oxygen coupler check unit. During servicing, one component of the check unit had inadvertently been replaced by a similar but inappropriate component. Interruption of oxygen flow resulted from a loss of contact between two components of the check unit. This incident raises questions about the basic design and safety of Schrader coupler check units.
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