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Showing 1 to 16 of 16 for “"pulmonary gas exchange"”.
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Influence of tidal volume on pulmonary gas exchange during general anaesthesia
Background and objective: General anaesthesia impairs respiratory function. The present studies were performed to compare arterial concentration of sevoflurane, oxygen and carbon dioxide in normal and overweight patients ventilated with increased tidal volume (VT), or normal tidal volume with and …
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Translational Imaging of Pulmonary Gas-Exchange Using Hyperpolarized 129Xe Magnetic Resonance Imaging
<p>The diagnosis and treatment of pulmonary diseases still rely on pulmonary function tests that offer archaic or insensitive biomarkers of lung structure and function. As a consequence, chronic obstructive pulmonary disease is the third leading cause of death in the US, and the hospitalization …
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Evaluation of clinical methods of pulmonary gas exchange assessment in the standing horse
There are limited methods of assessing pulmonary function in horses at rest. In this study, we developed clinical techniques to measure gas exchange efficiency in horses. These techniques were then used to evaluate horses with varying degrees of lower respiratory disease. Three groups of horses …
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Comparison of Two Aerosolized Bronchodilators in the Treatment of Severe Equine Chronic Obstructive Pulmonary Disease
… for treatment of horses with chronic obstructive pulmonary disease. Relative efficacy of sympathomimetic and parasympatholytic bronchodilators for relief of acute airway obstruction and improvement of pulmonary gas exchange was compared in 6 horses with COPD. Physical examination, arterial and …
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Prostacyclin-Inhalation in Kombination mit Almitrine zur Therapie des akuten Lungenversagens
… and intravenous almitrine bismesylate (ALM) on pulmonary ventilation-perfusion ratio in acute lung injury (ALI) compared to inhaled prostacycline or intravenous ALM alone. Experimental ALI was established in all 24 pigs (weighing 30+/-3 kg) by repeated lung lavage. Animals were randomly assigned …
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The mechanism and function of transient pressure fluctuations occurring in the lungs during diving in the turtle, Trachemys (=Pseudemys); scripta elegans
… were studied to determine if they could enhance pulmonary gas exchange. Skeletal muscle is the primary mechanism responsible for creating these pressure fluctuations, based on their persistence following inactivation or smooth muscle by atropine, a muscarinic blocking agent. Gas distribution …
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ΜΕΛΕΤΗ ΤΩΝ ΣΧΕΣΕΩΝ ΑΕΡΙΣΜΟΥ/ΑΙΜΑΤΩΣΗΣ (VA/Q), ΤΟΥ ΠΝΕΥΜΟΝΑ ΜΕΤΕΓΧΕΙΡΗΤΙΚΑ ΚΑΙ ΟΙ ΜΕΤΑΒΟΛΕΣ ΤΟΥΣ ΑΠΟ ΤΗΝ ΚΑΘΙΣΤΙΚΗ ΘΕΣΗ
… SURGERY DEMONSTRATES THAT POST-OPERATIVE PULMONARY DYSFUNCTION AND HYPOXEMIA IS MAINLY CAUSED BY A SHUNT LIKE EFFECT.SITTING POSITION IMPROVES PULMONARY GAS EXCHANGE IN PATIENTS WITH VA/Q INEQUALITIES. SITTING POSITION DOES NOT REDUCE THE TRUE INTRA PULMONARY SHUNT BUT INCREASES ALVEOLAR …
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Afferents integration and neural adaptive control of breathing
… during muscular exercise under a variety of pulmonary gas exchange defects is consistent with an optimal interaction of mechanical and chemical afferents. This provides a new understanding on the impacts of pulmonary gas exchange on the adaptive control of the exercise respiratory response. …
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Losartan, an angiotensin II receptor blocker, fails to attenuate pulmonary dysfunction in ovine burn and smoke model
… acute lung injury evidenced by deterioration of pulmonary gas exchange (PaO2/FiO2, pulmonary shunt fraction), increased lung water content, and increased pulmonary transvascular fluid flux, and vascular permeability index. Although there was a trend for the reduction of lung lymph flow and …
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What Resonates with you? Methods of Induced Cardiovascular Resonance
… support the notion that slow breathing improves pulmonary gas exchange efficiency, in addition to strengthening the baroreflex, by increasing heart rate variability.
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Die Ventilation mit biphasic positive airway pressure (BIPAP) im experimentellen akuten Lungenschaden : der Einfluß des transpulmonalen Drucks auf Gasaustausch und Hämodynamik
… be attributed to an effectively increased transpulmonary pressure (PTP) and can also be achieved by increasing PTP during controlled ventilation. DESIGN: In 12 pigs with saline lavage-induced lung injury we compared the effects of BIPAP to pressure-controlled ventilation with equal airway …
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Adaptation of Three Different Apoptotic Methods in Equine Bronchoalveolar Cells and Comparison of Bronchoalveolar Lavage Cell Apoptosis in Normal and COPD Affected Horses Before and After Dexamethasone Administration
… that lymphocyte apoptosis serves to regulate pulmonary inflammation. Equine COPD, an allergic disease of the lower airway, is likely due to dysregulation of the pulmonary immune response. In this study, the hypothesis tested was COPD affected horses would have less apoptotic airway lymphocytes …
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Modelling the respiratory control system in human subjects for excercise conditions
… the system response in terms of ventilation and pulmonary gas exchange during moderate and heavy exercise. It is also able to reproduce the characteristics of several blood quantities including arterial gas partial pressures, arterial O2 and CO2 concentrations, mixed-venous and arterial pH and …
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Enhancing human metabolic economy in stair climbing via an elastic crutch mechanism
… in which we measure metabolic economy via the pulmonary gas exchange technique (Vo2avg). Simultaneously recording electromyographic (EMG) signals from the primary active muscles provides a neuromuscular interpretation of the crutching activity not captured by the black-box metabolic techniques. …
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Pulmonary diffusion limitation, V̇ /Q̇ mismatch and pulmonary transit time in highly trained athletes during maximal exercise
To investigate the relationship between pulmonary diffusion limitation, ventilation-perfusion (VA/Q) mismatch, pulmonary transit times (PTT) and pulmonary gas exchange during exercise, 10 highly trained male athletes (age=26.4±4.4 years, Height=185.5±5.3cms, Weight=78.2±8.6 kg, V …
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Efeito do exercício aeróbio moderado em gestantes com sobrepeso avaliado através de teste de exercício submáximo : um ensaio clínico randomizado
Objetivo: Avaliar os efeitos de um programa de exercício aeróbio sobre o condicionamento cardiorrespiratório em gestantes hígidas, de baixo risco, com sobrepeso. Métodos: 92 mulheres gestantes com sobrepeso (índice de massa corporal 26-31kg/m2), idade ≥ 20 anos, idade gestacional ≤ 20 semanas, com …