The pulmonary diffusing capacity in normal subjects
نویسندگان
چکیده
منابع مشابه
Pulmonary diffusing capacity in disorders of the pulmonary circulation.
The pulmonary diffusing capacity for carbon monoxide was measured by single breath (DcoSB) and steady state (DcoSS) techniques in 48 patients with various pulmonary circulatory disorders and the results compared with the type of hemodynamic abnormality. Patients with pure inflow obstruction (primary pulmonary hypertension, recurrent pulmonary emboli) had the lowest Dco (mean DcoSB = 14.3 ml/min...
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While the pulmonary diffusing capacity is now accepted as an important test of lung function, comparatively little application of the test has been made in patients suffering from cardiac disorders. Bates, Boucot, and Dormer (1955) were the first to describe a simple and reliable means for estimating gaseous diffusion, using the steady state carbon monoxide technique. MacNamara, Prime, and Sinc...
متن کاملPulmonary diffusing capacity in left ventricular dysfunction.
The purpose of this study was to determine whether there are any consistent spirometric or Dsb findings in patients with LV dysfunction characterized by a clinical diagnosis of CHF and an EF less than 40 percent. We performed spirometry and Dsb in 34 patients, and found that EF correlated only with Dsb. When we separated the patients into those with rales and those without, Dsb correlated stron...
متن کاملLung diffusing capacity and exercise in subjects with previous high altitude pulmonary oedema.
Subjects with a history of high-altitude pulmonary oedema (HAPE) have increased pulmonary artery pressure and more ventilation-perfusion (V'A/Q') inhomogeneity with hypoxia and exercise. We used noninvasive methods to determine whether there are differences in the pulmonary diffusing capacity for carbon monoxide (DL,CO) and cardiac output (Q') during exercise, indicative of a more restricted pu...
متن کاملLower pulmonary diffusing capacity in the prone vs. supine posture.
We evaluated the effect of prone positioning on gas-transfer characteristics in normal human subjects. Single-breath (SB) and rebreathing (RB) maneuvers were employed to assess carbon monoxide diffusing capacity (DlCO), its components related to capillary blood volume (Vc) and membrane diffusing capacity (Dm), pulmonary tissue volume (Vti), and cardiac output (Qc). Alveolar volume (Va) was sign...
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ژورنال
عنوان ژورنال: The Journal of Physiology
سال: 1955
ISSN: 0022-3751
DOI: 10.1113/jphysiol.1955.sp005350