E. LESLIE CHUSID, M.D., F.A.C.P.
To the Editor: The UCLA Conference on "Evaluation of Lung Function" (Ann. Intern. Med. 71: 155, 1969) provides a good overall appraisal of pulmonary tests. However, because of terminology used in this field, data are often confusing. In the section entitled "Mechanics of Breathing," lung compliance is discussed in a general fashion as increased in patients with emphysema. In reality, it may be measured under static or dynamic conditions. In the absence of heart failure static compliance is increased in emphysema, but when measured under dynamic conditions with continuous recording, compliance is frequently decreased (1, 2). This is probably the
CHUSID EL. TERMINOLOGY OF PULMONARY FUNCTION. Ann Intern Med. 1969;71:1025–1026. doi: 10.7326/0003-4819-71-5-1025_4
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Published: Ann Intern Med. 1969;71(5):1025-1026.
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