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Percentages and True Flow of Gases for Gas-Oxygen Anesthesia*.

Foregger, Richard V. Ph.D.
Current Researches in Anesthesia & Analgesia: October 1927

IN THIS PAPER I am trying to explain that there is a dif- ference between percentage and amounts, and that you cannot figure percentage unless you first know the amounts; further that you cannot obtain correct figures of amounts of gases in motion unless you consider the property of gases of different molecular weight to move with different velocity; also that the best way to achieve this is to measure the gases in individual flow meters before they mix; and finally that fine adjustments necessarily combined with fine measurements are of more than economic value in routine work; are of least disturbance to the physiological balance of the respiratory process and form the scientific basis of research work.

(C) 1927 International Anesthesia Research Society