Méthode non sanglante d’estimation du gradient alvéolo-artériel et de la pression artérielle de CO2

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.