Unsteadiness of pulmonary vascular pressures in rapid acceleration supramaximal exercise
نویسندگان
چکیده
منابع مشابه
Effect of acute increases in pulmonary vascular pressures on exercise pulmonary gas exchange.
The purpose of this study was to determine the effect of acute increases in pulmonary vascular pressures, caused by the application of lower-body positive pressure (LBPP), on exercise alveolar-to-arterial PO2 difference (A-aDO2), anatomical intrapulmonary (IP) shunt recruitment, and ventilation. Eight healthy men performed graded upright cycling to 90% maximal oxygen uptake under normal conditi...
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Alveolar-capillary surface area for pulmonary gas exchange falls with aging, causing a reduction in lung diffusing capacity for carbon monoxide (DLCO). However, during exercise additional factors may influence DLCO, including pulmonary blood flow and pulmonary vascular pressures. First, we sought to determine the age-dependent effect of incremental exercise on pulmonary vascular pressures and D...
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This study was designed to determine the effect of 200ml of autologous blood instilled in the lungs of healthy horses had on gas exchange, maximal oxygen consumption ð _ VO2maxÞ and breathing mechanics during supramaximal exercise, as a model of exercise-induced pulmonary haemorrhage (EIPH). The subjects were six healthy well-conditioned Thoroughbred horses. On four occasions over a 6-week peri...
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The purpose of this investigation was to assess the effect of captopril on both systemic (P.a) and pulmonary arterial pressures (PPA) in patients with high-altitude pulmonary hypertension (HAPH). Seventeen patients (mean age 44±6.8 years) with HAPH and mild to moderate systemic arterial hypertension were included in the study. All patients underwent right heart catheterization with measurem...
متن کاملAn evaluation of wedge pressures in dogs under conditions of normal and elevated pulmonary vascular pressures.
Fifty-six combined right and left heart catheterizations in normal dogs and clogs with experimental mitral stenosis failed to show a significant positive correlation between pulmonary artery wedge pressure and pulmonary vein pressure when the latter was below approximately 17 mm. Hg. Evidence is presented which suggests that the wedged catheter outlets are totally occluded in many instances in ...
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ژورنال
عنوان ژورنال: Equine Veterinary Journal
سال: 2010
ISSN: 0425-1644,2042-3306
DOI: 10.1111/j.2042-3306.1995.tb04896.x