Why the study?
Does light exercise alter renal function and circulation in patients with mitral stenosis?
Does light exercise alter renal function and circulation in patients with mitral stenosis?
In patients with mitral stenosis, light exercise acutely impairs renal function and increases renal resistance, highlighting adverse cardiorenal hemodynamic interactions during exertion.
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Light exercise may impair renal hemodynamics in mitral stenosis; hypothesis-generating for cardiorenal interactions in valvular disease.
In 31 patients with mitral stenosis of varying severity the effect of light, steady exercise during 15 to 17 minutes on renal function and renal circulation has been studied during heart catheterization. The results have been compared with the values obtained at rest in 72 patients with mitral stenosis. Exercise produced a decrease in clearance of para-aminohippurate and sodium excretion and an increase in renal resistance, changes not produced in normal individuals. Cardiac output and pulmonary pressures increased. In patients with right heart failure exercise produced increased pressures but no increase in cardiac output, and only slight changes in clearance but increase in renal resistance and renal venous pressure.
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Werkö et al. (1954) studied this question.
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