In the last decade, particularly the latter half of this decade, the vital capacity test, together with certain measurements of the body from which physical fitness is ascertained, has rapidly been gaining in favor with physicians especially interested in diseases of the heart and lungs. The present study of which this paper is only a preliminary report represents an attempt to investigate carefully the value of the vital capacity test in diseases of the lungs.
Recently I reported1 approximately 100 cases in all of which stereoroentgenograms were made. Later2 I reported 230 cases. Since these papers were prepared further data have been collected and compiled on cases of pulmonary tuberculosis, bronchial asthma, pneumonia and one acute infection outside the respiratory tract (paratyphoid fever).
I. PULMONARY TUBERCULOSIS
The present report details the findings in 335 cases. Unfortunately roentgenograms could be had in only 210 cases. In all other cases
MYERS JA. STUDIES ON THE RESPIRATORY ORGANS IN HEALTH AND DISEASE: VI. THE SIGNIFICANCE OF THE VITAL CAPACITY TEST IN PULMONARY TUBERCULOSIS, BRONCHIAL ASTHMA, PNEUMONIA AND AN ACUTE INFECTION OUTSIDE THE RESPIRATORY TRACT. Arch Intern Med (Chic). 1922;30(5):648–667. doi:10.1001/archinte.1922.00110110119012
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