Cardiac Chamber Catheterization
Another method of measuring the severity of mitral stenosis is the simultaneous left and right heart chamber catheterization. The right heart catheterization (commonly known as Swan-Ganz catheterization) gives the physician the mean pulmonary capillary wedge pressure, which is a reflection of the left atrial pressure. The left heart catheterization, on the other hand, gives the pressure in the left ventricle. By simultaneously taking these pressures, it is possible to determine the gradient between the left atrium and left ventricle during ventricular diastole, which is a marker for the severity of mitral stenosis. This method of evaluating mitral stenosis tends to overestimate the degree of mitral stenosis, however, because of the time lag in the pressure tracings seen on the right heart catheterization and the slow Y descent seen on the wedge tracings. If a trans-septal puncture is made during right heart catheterization, however, the pressure gradient can accurately quantify the severity of mitral stenosis.
Read more about this topic: Mitral Valvuloplasty, Diagnosis
Famous quotes containing the word chamber:
“The fate of the country does not depend on how you vote at the polls,—the worst man is as strong as the best at that game; it does not depend on what kind of paper you drop into the ballot- box once a year, but on what kind of a man you drop from your chamber into the street every morning.”
—Henry David Thoreau (1817–1862)