title: [Expiration curves of CO2 and helium in the evaluation of the operative risk in patients with broncho-pulmonary diseases].
mesh_terms: D002245:Carbon Dioxide; D006371:Helium; D006801:Humans; D011300:Preoperative Care; D012140:Respiratory Tract Diseases / Q000503:physiopathology*; D013147:Spirometry; D014692:Ventilation-Perfusion Ratio
chemical_list: D002245:Carbon Dioxide; D006371:Helium
vernacular_title: Le curve espiratorie del CO2 e dell'elio nella valutazione del rischio operatorio del broncopneumopatico