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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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Current Opinion in Anaesthesiology, 1992
General anaesthesia may still cause severe hypoxaemia in more patients than expected. However, the causes of pulmonary dysfunction during anaesthesia have become more clear with shunt (caused by compression atelectasis) and ventilation/perfusion (A/) mismatch being the two major factors.
Hans Ulrich Rothen, G??ran Hedenstierna
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General anaesthesia may still cause severe hypoxaemia in more patients than expected. However, the causes of pulmonary dysfunction during anaesthesia have become more clear with shunt (caused by compression atelectasis) and ventilation/perfusion (A/) mismatch being the two major factors.
Hans Ulrich Rothen, G??ran Hedenstierna
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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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Effects of hypoxic pulmonary vasoconstriction on pulmonary gas exchange
Journal of Applied Physiology, 1996Brimioulle, Serge, Philippe Lejeune, and Robert Naeije.Effects of hypoxic pulmonary vasoconstriction on pulmonary gas exchange. J. Appl. Physiol. 81(4): 1535–1543, 1996.—Several reports have suggested that hypoxic pulmonary vasoconstriction (HPV) might result in deterioration of pulmonary gas exchange in severe hypoxia.
Brimioulle, Serge +2 more
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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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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 in the morbidly obese
Obesity Reviews, 2008SummaryThe literature on pulmonary gas exchange at rest, during exercise, and with weight loss in the morbidly obese (body mass index or BMI ≥ 40 kg m−2) is reviewed. Forty‐one studies were found (768 subjects weighted mean = 40 years old, BMI = 48 kg m−2). The alveolar‐to‐arterial oxygen partial pressure difference (AaDO2) was large at rest in upright
G S, Zavorsky, S L, Hoffman
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Effect of pulmonary hypertension on gas exchange
European Respiratory Journal, 1993This paper reviews the effects of pulmonary artery hypertension on gas exchange by exploring three different issues, namely: 1) how does gas exchange behave in diseases characterized by increased vascular tone (primary pulmonary hypertension (PPH), chronic obstructive pulmonary disease (COPD) and interstitial pulmonary fibrosis (IPF)) or decreased ...
A G, Agustí, R, Rodriguez-Roisin
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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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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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