Changes of Oxygen Content in Alveolar Arterial Blood in Patients with Chronic Obstructive Pulmonary Diseases / 第三军医大学学报

Blood gas analysis was performed in 65 normal adults, 90 patients with chronic bronchitis and 173 with cor pulmonale. Altogether 401 determinations were done. It was found that the P(A-a)O2 was significantly higher in patients with chronic bronchitis and cor pulmonale than in normal adults. When considered comprehensively with the parameters of pulmonary ventilation and diffusion functions and the ventilation/perfusion ratio, P(A-a)O2 possesses definite clinical significance. In various kinds of acid-base disturbance, P(A-a)O2 is the highest in decompensatory respiratory acidosis, and the lowest in compensatory respiratory acidosis.