[Fractional CO uptake in breathing at risk for detection of diffusion disorder. Comparative cross-sectional and longitudinal validation with the single breath method].
Methodically it is very simple to determine fractional CO-uptake (FCO) from inspiratory and mean expiratory CO-concentrations. In two longitudinal studies the single-breath-TCO (49 patients) and FCO (813 patients) have been compared. The oscillations of DCO are smaller than those of TCO, but it remains unclear which method for determination of CO-transfer has a higher validity.
Smidt
U
U
Institut für Arbeitsmedizin, Moers.
D001944:Breath Tests; D002248:Carbon Monoxide; D003430:Cross-Sectional Studies; D005541:Forced Expiratory Volume / Q000502:physiology; D006801:Humans; D008137:Longitudinal Studies; D008171:Lung Diseases / Q000175:diagnosis* / Q000503:physiopathology; D011659:Pulmonary Gas Exchange / Q000502:physiology; D014692:Ventilation-Perfusion Ratio / Q000502:physiology*
D002248:Carbon Monoxide
Die fraktionelle CO-Aufnahme bei Ruheatmung zum Nachweis einer Diffusionsstörung. Vergleichende Validierung im Quer- und Längsschnitt zur single-breath-Methode.