Title of article :
Differentiation of constrictive pericarditis from restrictive cardiomyopathy: Assessment of left ventricular diastolic velocities in longitudinal axis by doppler tissue imaging
Author/Authors :
Mario J. Garcia، نويسنده , , Leonardo Rodriguez، نويسنده , , Miguel Ares، نويسنده , , Brian P. Griffin، نويسنده , , James D. Thomas، نويسنده , , Allan L. Klein، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1996
Pages :
7
From page :
108
To page :
114
Abstract :
Objectives. We sought to determine the utility of left ventricular expansion velocities in differentiating constrictive pericarditis from restrictive cardiomyopathy. Background. Several studies have shown that left ventricular diastolic expansion is influenced by the elastic recoil forces of the myocardium. These forces are affected by intrinsic myocardial disease but should be preserved when diastole is impaired as result of extrinsic causes. Methods. Using Doppler tissue imaging, we measured peak early velocity of longitudinal axis expansion (Ea) in 8 patients with constrictive pericarditis, 7 patients with restriction and 15 normal volunteers. Transmitral early (E) and late (A) Doppler flow velocities, left ventricular systolic and diastolic volumes, ejection fraction and mitral annular M-mode displacement were also compared between the groups. Results. The E value was significantly higher in normal subjects (14.5 ± 4.7 cm/s [mean ±SD]) and in patients with constriction (14.8 ± 4.8 cm/s) than in those with restriction (5.1 ± 1.4 cm/s, p < 0.001 constriction vs. restriction). There was weak correlation between E and the extent of annular displacement (r = 0.55, p = 0.004) and the E/ ratio (r = 0.44, p = 0.03). There was no correlation between E and E (r = 0.33, p = 0.07) or ejection fraction (r = 0.21, p = 0.26). By multivariate analysis, E was the best variable for differentiating constriction from restriction. Conclusions. Our study indicates that longitudinal axis expansion velocities are markedly reduced in patients with restrictive cardiomyopathy. The poor correlation found with transvalvular flow velocities suggests that E may be relatively preload independent. The measurement of longitudinal axis expansion velocities provides clinically useful distinction between constrictive pericarditis and restrictive cardiomyopathy and may prove to be valuable in the study of diastolic function.
Journal title :
JACC (Journal of the American College of Cardiology)
Serial Year :
1996
Journal title :
JACC (Journal of the American College of Cardiology)
Record number :
478874
Link To Document :
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