title: The effect of gastroscopy on arterial blood gases.
mesh_terms: D000328:Adult; D000368:Aged; D001784:Blood Gas Analysis / Q000379:methods; D005260:Female; D005773:Gastroscopy / Q000009:adverse effects / Q000379:methods*; D006801:Humans; D000860:Hypoxia / Q000175:diagnosis / Q000209:etiology*; D008171:Lung Diseases / Q000209:etiology; D008297:Male; D008875:Middle Aged; D010100:Oxygen / Q000032:analysis; D011650:Pulmonary Alveoli / Q000502:physiology / Q000503:physiopathology
chemical_list: D010100:Oxygen