Results 291 to 300 of about 124,440 (339)
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1995
The ultimate goal of the respiratory system is to exchange oxygen (O2) and carbon dioxide (CO2), to meet the metabolic needs of the body. In order to properly transfer both gases, ventilation and blood flow must be adequately apportioned and matched within the lungs. Of the four classic mechanisms determining abnormal arterial blood respiratory gases —
R. Rodriguez-Roisin, J. Roca
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The ultimate goal of the respiratory system is to exchange oxygen (O2) and carbon dioxide (CO2), to meet the metabolic needs of the body. In order to properly transfer both gases, ventilation and blood flow must be adequately apportioned and matched within the lungs. Of the four classic mechanisms determining abnormal arterial blood respiratory gases —
R. Rodriguez-Roisin, J. Roca
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1996
In the original sense of the latin word, “respiration” means repeated inhaling and exhaling of air with the associated movements of the thorax. Respiratory movements produce air flow for the transport of O2 into lungs, and of CO2, the end product of oxidative metabolism, out of the lungs.
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In the original sense of the latin word, “respiration” means repeated inhaling and exhaling of air with the associated movements of the thorax. Respiratory movements produce air flow for the transport of O2 into lungs, and of CO2, the end product of oxidative metabolism, out of the lungs.
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Pulmonary gas exchange in panting dogs
Journal of Applied Physiology, 1989Pulmonary gas exchange during panting was studied in seven conscious dogs (32 kg mean body wt) provided with a chronic tracheostomy and an exteriorized carotid artery loop. The animals were acutely exposed to moderately elevated ambient temperature (27.5 degrees C, 65% relative humidity) for 2 h.
M, Meyer +4 more
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Pulmonary gas exchange during altered density gas breathing
Journal of Applied Physiology, 1982The alveolar-arterial O2 partial pressure difference (PAO2 - PaO2) has been shown to decrease as carrier-gas density increases. This study was designed to confirm or deny the hypothesis that the improvement in O2 exchange is a result of density-dependent changes in the alveolar ventilation-perfusion (VA/Q) distribution.
S K, Christopherson, M P, Hlastala
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Pulmonary gas exchange and exercise performance in pulmonary hypertension
Chest, 1985Patients with pulmonary hypertension have disordered pulmonary gas exchange and impaired exercise tolerance. The hypoxemia is due to mild ventilation-perfusion (VA/Q) inequality exaggerated by the presence of a low mixed venous PO2 (PvO2) and is accentuated during exercise due to a further fall in PvO2.
D R, Dantzker, G E, D'Alonzo
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Recent Advances in Pulmonary Gas Exchange
International Anesthesiology Clinics, 1977Abnormal gas exchange frequently accompanies general anesthesia, and the mechanisms are probably variable and multiple. This chapter has focused on recent advances in both experimental and theoretical approaches to gas exchange in general, with emphasis on the potentially important areas for the anesthesiologist wishing to study gas during anesthesia ...
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A Century of Pulmonary Gas Exchange
American Journal of Respiratory and Critical Care Medicine, 2004The period from 1905 to 2004 was a particularly important era in the history of pulmonary gas exchange. The dramatic increase in knowledge from rudimentary ideas at the beginning of the 20th century to today’s sophisticated analyses might be compared with the progress from the Wright flyer at Kitty Hawk in December 1903 to modern supersonic aircraft ...
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American Journal of Respiratory and Critical Care Medicine, 1998
J B, West, P D, Wagner
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J B, West, P D, Wagner
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GAS EXCHANGE IN CHRONIC PULMONARY DISEASE
Clinical Physiology, 1985SUMMARYPatients with asthma, chronic obstructive lung disease and diffuse inter stitial fibrosis were studied., These three groups of patients illustrate very different patterns of V̇A/Q̇ mismatching in general, consistent with the known pathology of their disease. Some common threads run through all three groups.
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