Results 311 to 320 of about 3,615,865 (367)

New insights into the aspects of pulmonary diffusing capacity in Fontan patients

Cardiology in the Young, 2013
Background: Patients with a functionally univentricular heart, palliated a.m. Fontan, consequently have non-pulsatile pulmonary blood flow and are known to have a reduced pulmonary diffusing capacity. However, the cause of this reduction remains unclear.
L. Idorn, B. Hanel, A. S. Jensen, K. Juul, J. Reimers, K. Nielsen, L. Søndergaard   +6 more
semanticscholar   +1 more source

Diffusing capacity of the lung in pulmonary emphysema

Journal of Applied Physiology, 1964
Steady-state CO and O2 methods for measuring pulmonary diffusing capacity may be affected by abnormal distribution of inspired gas relative to perfusion. These methods frequently fail to separate abnormalities in diffusion from abnormalities in distribution in patients with obstructive emphysema.
Ruth G. Armstrong, Meta E. Buehler, Stephen M. Ayres   +2 more
openaire   +3 more sources

The Role of Diffusing Capacity and Exercise Tests

Thoracic Surgery Clinics, 2008
Beside pulmonary function tests, other measures of cardiopulmonary fitness have been shown to be useful for preoperative risk stratification. Reduced values of carbon monoxide lung diffusion capacity and its predicted postoperative value have been reported to be associated with postoperative complications and mortality.
Mark K. Ferguson, Amy G. Lehman, Chris T. Bolliger, Alessandro Brunelli   +3 more
openaire   +3 more sources

Physical training and exercise diffusing capacity

Internationale Zeitschrift f�r Angewandte Physiologie Einschlie�lich Arbeitsphysiologie, 1968
The diffusing capacity (D L,CO) has been measured repeatedly by an improved “brief steady-state” technique in a total of 13 experimental and 4 control subjects. Both resting and exercise (D L,CO) were initially somewhat higher in the more athletic subjects.
T. W. Anderson, R. J. Shephard
openaire   +3 more sources

Measurement of diffusing capacity in pulmonary embolism

Respiratory Medicine, 1989
Pulmonary function tests were carried out in 20 consecutive patients with pulmonary embolism (PE), diagnosed on the basis of a positive ventilation-perfusion lung scan carried out within 72 h of admission. Changes in forced expiratory volume in one second (FEV1), forced vital capacity (FVC) and arterial blood gas tensions were too variable to be ...
H.S.K. Wimalaratna, H.Y. Lee, J. Farrell
openaire   +3 more sources

Examination of the carbon monoxide diffusing capacity (DL(CO)) in relation to its KCO and VA components.

American Journal of Respiratory and Critical Care Medicine, 2012
The single-breath carbon monoxide diffusing capacity (DL(CO)) is the product of two measurements during breath holding at full inflation: (1) the rate constant for carbon monoxide uptake from alveolar gas (kco [minute(-1)]) and (2) the "accessible ...
J. M. B. Hughes, Neil B. Pride
semanticscholar   +1 more source

Clinical Significance of Elevated Diffusing Capacity

Chest, 2004
Single-breath diffusing capacity of the lung for carbon monoxide (DLCO) is used as a pulmonary function test (PFT) to assess gas transfer in the lungs. The implications of a low DLCO are well-recognized, but the clinical significance of a high DLCO is not clear.
Kenneth C. Beck, Clayton T. Cowl, Paul A. Decker, Ghulam Saydain, Paul D. Scanlon   +4 more
openaire   +3 more sources

Placental diffusing capacity in unanesthetized rabbits

American Journal of Physiology-Legacy Content, 1975
The purpose of this study was to determine the placental diffusing capacity of CO in unanesthetized rabbits. A standard dose of CO was administered to 18 near-term rabbits, and at time intervals varying from 5 min to 4 h maternal and fetal blood samples were analyzed for carboxyhemoglobin saturation (HbCO). Following administration of CO, the maternal
Edelweiss Rocco, Gordon G. Power, Tom R. Bennett   +2 more
openaire   +3 more sources

Pulmonary diffusing capacity in healthy caucasian children

Pediatric Pulmonology, 2012
Previous studies of pulmonary diffusing capacity in children differed greatly in methodologies; numbers of subjects evaluated, and were performed prior to the latest ATS/ERS guidelines.
Young-Jee Kim, G. Hall, Kathy Christoph, R. Tabbey, Zhangsheng Yu, R. Tepper, H. Eigen   +6 more
semanticscholar   +1 more source

Relative importance of diffusion and chemical reaction rates in determining rate of exchange of gases in the human lung, with special reference to true diffusing capacity of pulmonary membrane and volume of blood in the lung capillaries.

Journal of applied physiology, 1957
An equation, i/Dm + i/θVc = i/Dl, has been derived which relates the measured pulmonary diffusing capacity (Dl), the true diffusing capacity of the pulmonary membrane (Dm), the rate of uptake of CO...
F. Roughton, R. Forster
semanticscholar   +1 more source