Physiologic Evaluation and Treatment of Kyphoscoliotic Patients

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Abstract
New techniques of investigation have clarified the nature of the abnormalities of pulmonary function in patients with severe kyphoscoliosis. Restricted lung volumes, alveolar hypoventilation, hypercapnia, arterial oxygen unsaturation, and normal distribution of inspired air have been observed in these patients. However, arterial oxygen unsaturation when it occurs is unusually large for the degree of alveolar hypoventilation. Previous investigations have eliminated a diffusion abnormality (1) or atelectasis as a basis for this defect. The present study is concerned with the problem of arterial oxygen unsaturation and with the therapy of the acutely ill kyphoscoliotic patient. Three male

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