Evaluation of Left Ventricular Function in Chronic Regurgitation Before and After Valve Replacement
Controversy continues regarding the appropriate timing of operative intervention in patients with chronic aortic regurgitation (CAR) [1,2,3,4]. Once symptoms develop, surgical replacement of the aortic valve is recommended because continued medical therapy is associated with progressive clinical deterioration. However, if surgery is delayed until the occurrence of symptoms and marked cardiomegaly, some patients have left ventricular dysfunction and do not improve symptomatically postoperatively.
KeywordsAortic Valve Left Ventricular Function Aortic Valve Replacement Wall Stress NYHA Class
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- 3.R. 0. Bonow, D. R. Rosing, K. M. Kent, and S. E. Epstein, Timing of operation for chronic aortic regurgitation, Am.J.Cardiol., 68: 509 (1983).Google Scholar
- 4.J. Ross, Left ventricular function and the timing of surgical treatment in valvular heart disease, Am.Int.Med., 94: 498 (1981).Google Scholar
- 6.A. G. Kumpuris, M. A. Quinones, A. D. Waggoner, D. J. Kanon, J. G. Nelson, and R. R. Miller, Importance of preoperative hypertrophy, wall stress and end-systolic dimension as echo-cardiographic predictors of normalization of left ventricular dilatation after valve replacement in chronic aortic insufficiency, Am.J.Cardiol., 49: 1091 (1982).CrossRefGoogle Scholar
- 8.R. L. Popp, K. Filly, 0. R. Brown, and D. C. Harrison, Effect of transducer placement on echocardiographic left ventricular dimensions, Am.J.Cardiol., 35:537 (3975).Google Scholar
- 15.M. A. Quinones, E. Pickering, and J. K. Alexander, Percentage of shortening of the echocardiographic left ventricularGoogle Scholar
- dimension: its use in determining ejection fraction and stroke volume, Chest, 74:50 (1978).Google Scholar