title: [A method of estimating alveolo-arterial gradient and arterial pressure of CO2, without analysis of blood].
abstract: In 31 normal and 378 patients suffering from various bronchopulmonary diseases, a relation was established experimentally between TCO and the alveolo-arterial gradient of CO2. From TCO and CO2 output, this relation allows to obtain a reproducible estimation of the alveolo-arterial gradient and of the arterial pressure of CO2 by a non-bloody method with sufficient clinical accuracy. Moreover, this methods permits to interpret TCO steady state more easily and especially so under unusual ventilatory conditions.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001982:Bronchial Diseases / Q000378:metabolism*; D002245:Carbon Dioxide / Q000032:analysis*; D005260:Female; D006801:Humans; D008171:Lung Diseases / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D011009:Pneumoconiosis / Q000378:metabolism; D012123:Pulmonary Ventilation; D012129:Respiratory Function Tests; D014692:Ventilation-Perfusion Ratio
chemical_list: D002245:Carbon Dioxide
vernacular_title: Méthode non sanglante d'estimation du gradient alvéolo-artériel et de la pression artérielle de CO2