INDIRECT DETERMINATION OF THE IDEAL ALVEOLAR OXYGEN TENSION DURING AND AFTER NITROUS OXIDE ANAESTHESIA

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Abstract
The conventional form of the alveolar air equation assumes that inert gases are in equilibrium. It is therefore inapplicable during nitrous oxide uptake and elimination. An alternative form of the equation avoids this assumption and may be used for calculation of the ideal alveolar tension of oxygen or inhalational anaesthetic agents.