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Assessing Pulmonary Gas Exchange
New England Journal of Medicine, 1987IN these heady days of molecular biology, one almost needs to apologize for an interest in pulmonary gas exchange.
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Pulmonary gas exchange in diving
Journal of Applied Physiology, 2009Diving-related pulmonary effects are due mostly to increased gas density, immersion-related increase in pulmonary blood volume, and (usually) a higher inspired Po2. Higher gas density produces an increase in airways resistance and work of breathing, and a reduced maximum breathing capacity.
R E, Moon +3 more
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Pentoxifylline Improves Pulmonary Gas Exchange
Chest, 1990Pentoxifylline is a xanthine derivative with hemorrheologic and vascular properties that may improve gas exchange in patients with chronic obstructive pulmonary disease (COPD). We tested this hypothesis in 12 patients with COPD (mean FEV1 = 40 percent predicted; mean DCO, 8.6 ml/min/mm Hg) randomly divided into a treatment and control group and six ...
F, Haas +6 more
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Pulmonary Embolism and Gas Exchange
Respiration, 2019Acute pulmonary embolism (PE) impairs hemodynamics, gas exchange, and lung mechanical capacity. Considering PE pathophysiology, most attention has been paid to hemodynamic impairment. However, the most prevalent symptoms in PE patients come from gas exchange alterations, which have not been in the spotlight for many years.
Caio J, Fernandes +4 more
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Pulmonary gas exchange in hypothyroidism
Pneumonologie Pneumonology, 1974In 7 normocapnic patients with hypothyroidism pulmonary gas exchange was measured before and after successful hormonal treatment. The results were compared with those of 8 healthy control subjects matched with the patients made euthyroid by treatment in relation to their age, sex, body height, and body weight.
M, Scherrer, M P, König
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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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