James E. Hansen, MD
To the Editor: The article by Dillard and colleagues (1) and the editorial by Gong (2) aid physicians who must determine whether patients with lung disease are likely to become hypoxemic during air travel and should receive supplemental oxygen. Although several physiologic measures are recommended (all of which may not be easily available to many internists) and many variables are considered in the equations used to predict the patient's arterial oxygen tension (PaO2) during flight, neither presentation mentions a very practical and simple factor: the role of oral intake in changing alveolar oxygen tension (PAO2) and, consequently, PaO2.
Hansen JE. Diet and Flight Hypoxemia. Ann Intern Med. ;111:859. doi: 10.7326/0003-4819-111-10-859_2
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Published: Ann Intern Med. 1989;111(10):859.
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