[Assessment of the danger of bronchological studies under polyclinic conditions]

In 176 ambulatory patients with cancer and inflammatory diseases of the lung the initial parameters of acid-base balance and blood gases were studied. Metabolic acidosis was found in 29.5%, alkalosis--in 54.5%, the values of acid-base balance and blood gases were normal in 15.9% of patients. The degree of bronchoscopy risk under narcosis in ambulatory patients is directly proportional to the kind, character and intensity of disorders in oxidation-reduction processes. Deep, hardly compensated or decompensated disorders in acid-base balance and gas metabolism in pH values higher than 7.54 and lower the 7.26, BE (buffer base shift)--higher than 4.0 meq/1 and lower than 6.0 meq/l, and pO2 lower than 65 mm Hg are the criteria of high risk of bronchological investigation under anesthesia in ambulatory oncological patients.