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  • Title: Restrictive left ventricular filling pattern in dilated cardiomyopathy assessed by Doppler echocardiography: clinical, echocardiographic and hemodynamic correlations and prognostic implications. Heart Muscle Disease Study Group.
    Author: Pinamonti B, Di Lenarda A, Sinagra G, Camerini F.
    Journal: J Am Coll Cardiol; 1993 Sep; 22(3):808-15. PubMed ID: 8354816.
    Abstract:
    OBJECTIVES: This study was undertaken to evaluate the frequency of restrictive left ventricular filling pattern in dilated cardiomyopathy, as well as its clinical and hemodynamic correlations and prognostic implications. BACKGROUND: In dilated cardiomyopathy, as in other heart diseases, different left ventricular filling patterns were observed on Doppler echocardiography. Some patients showed a "restrictive filling pattern," similar to that associated with restrictive cardiomyopathy, characterized by predominant E waves and a shortened E deceleration time. METHODS: Pulsed Doppler transmitral curves were analyzed in 79 consecutive patients with dilated cardiomyopathy assigned to two study groups according to E deceleration time: group 1 (n = 36) had a restrictive left ventricular filling pattern (E deceleration time < 115 ms); group 2 (n = 43) had an E deceleration time > or = 115 ms. RESULTS: Patients in group 1 were significantly younger, in a higher New York Heart Association functional class, more frequently had a third heart sound and had a higher left ventricular filling pressure at catheterization. In addition, they showed more severe left and right ventricular dysfunction and dilation, a larger left atrium and more severe mitral regurgitation. A restrictive filling pattern was associated at Doppler study with a higher E wave velocity, lower A wave velocity and higher E/A ratio. During a follow-up interval of 22 +/- 14 months, all 14 patients who subsequently died or required heart transplantation showed a restrictive left ventricular filling pattern. At multivariate analysis, E deceleration time was the most powerful independent prognostic indicator of poor outcome or transplantation. CONCLUSIONS: Restrictive left ventricular filling pattern is frequent in dilated cardiomyopathy, is associated with more severe disease and is a powerful indicator of increased mortality risk and need for heart transplantation.
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