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Anaesthesia General f5a8d655

All of the following are used to maintain proper oxygen flow to the patient except –

A
Placement of Oxygen flowmeter downstream of the Nitrogen flowmeter
B
A proportionater between N2 and O2 control valve
C
Different pin index for nitrogen and oxygen
D
Calibrated oxygen concentration analyses
High-Yield Explanation
Pin index safety system for cylinders is to prevent incorrect cylinder attachment (not to prevent hypoxia).

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