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T. A. Don Michael, MD, FRCP
UCLA School of Medicine Los Angeles

JAMA. 1984;251(16):2085.

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

To the Editor.—

With reference to the article, "The Esophageal Obturator Airway,"¹ I believe that there are several points that bear clarification and reinterpretation.

It is to be stressed that the small series of patients of Schofferman et al,² which probably should be considered as unrepresentative and from which the authors quote, was analyzed by them in relation to the efficiency of ventilation and Pco₂ and the conclusion reached that patients had sustained mixed metabolic and respiratory acidosis. The mean Po₂ in this group (Table) receiving 100% oxygen was 201 mm (esophageal obturator airway [EOA]) and 152 mm (endotracheal tube [ET]), the Pco₂ levels being 61 mm (EOA) and 55 mm (ET), respectively. Levels of Po₂ for the entire series of patients were 120 mm (EOA) and 102 mm (ET), and Pco₂ levels were 62 mm (EOA) and 49 mm (ET), respectively. The . . . [Full Text PDF of this Article]

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