title: The capnogram in the study of chronic obstructive lung disease.
abstract: The purpose of this study is: 1) to emphasize the importance of the capnogram in the investigation of ventilatory disorders of the obstructive type; 2) to propose a numerical parameter representative of the capnogram; 3) to ascertain, by means of this parameter, possible correlations between capnogram changes and other tests of lung function. This parameter enables a quantitative criterion to be substituted for a descriptive one in assessment of the capnogram; The study covered 245 patients with chronic obstructive lung disease; We observed that as the capnographic tracing becomes more and more pathological, the lung function tests show progressive deterioration.
mesh_terms: D000328:Adult; D000368:Aged; D001249:Asthma / Q000503:physiopathology; D001991:Bronchitis / Q000503:physiopathology; D002245:Carbon Dioxide; D002908:Chronic Disease; D005260:Female; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000175:diagnosis / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D011656:Pulmonary Emphysema / Q000503:physiopathology; D012129:Respiratory Function Tests / Q000379:methods
chemical_list: D002245:Carbon Dioxide