Accordingly, assistance to ventilation was required by manual compression of the reservoir bag, anaesthetic gas mixture being delivered through a tube inserted in the trachea.
Times, Sunday Times
A source close to the investigation said the test would detect traces of anaesthetic gas if there were any.
Times, Sunday Times
Police believe two experienced criminals pumped an anaesthetic gas into the property through its air conditioning vents.
The Sun
Donning a gas mask, the doctor releases anaesthetic gas into the ventilation system.
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