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S.N. ALBERT, MD
Washington Hospital Center Washington, DC

Arch Otolaryngol. 1971;94(5):481-482.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

Dr. Karlan has made a very interesting and fairly complete review of the literature. We thank him for his contribution and questions.

The data presented in the report that appeared in the June 1971 issue has been substantiated by additional studies performed on 50 patients. The arterial Pco₂ has not risen and remained below induction levels. The duration of the procedures lasted up to 15 minutes, in some instances, and here again there has been no rise in arterial Pco₂.

Pressures were originally measured with a water manometer and later with an aneroid manometer. It is true that there is a time lag for the manometer to stabilize. The pressures reported were obtained when the pressure reached a peak level with a continuous jet flow of oxygen.

In a report under preparation, studies on oxygen rate flow, total volume of air displaced, and oxygen concentrations have been measured . . . [Full Text PDF of this Article]

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