Left ventricular function in rheumatic mitral stenosis. Clinical echocardiographic study.
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TLDR
It is suggested that abnormalities in contractility of left ventricular myocardium are responsible for the impaired myocardial function in patients with mitral stenosis and that such impairment is clinically significant.Abstract:
Echocardiography was used to examine the extent and significance of impairment in left ventricular function in 20 patients with rheumatic mitral stenosis. Indices of left ventricular performance--normalised mean rate of circumferential fibre shortening (Vcf), ejection fraction, normalised posterior wall velocity, and stroke volume were reduced. The impairment in left ventricular function was related to the degree of functional disability (NYHA), right ventricular dilatation, and left atrial enlargement. Vcf was inversely related to both the internal right ventricular diameter (r=-0.767, P less than 0.001) and the degree of left atrial enlargement (r=-0.554; P less than 0.05). The normalised velocity of the interventricular septum and the maximum systolic and diastolic endocardial velocities were also reduced. These results suggest that abnormalities in contractility of left ventricular myocardium are responsible for the impaired myocardial function in patients with mitral stenosis and that such impairment is clinically significant.read more
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References
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Journal ArticleDOI
Left Ventricular Volumes and Ejection Fraction by Echocardiography
TL;DR: Left ventricular dimensions in systole and diastole can be reliably determined and left ventricular chamber size and ejection fraction can be quantitated in man by the noninvasive technique of echocardiography.
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Ultrasound measurements of the left ventricle. A correlative study with angiocardiography.
Harvey Feigenbaum,Richard L. Popp,Stanley B. Wolfe,Bart L. Troy,Joaquin F. Pombo,Charles L. Haine,Harold T. Dodge +6 more
TL;DR: Echocardiography ultimately may provide a clinically useful, noninvasive technique for quantitative estimations of left ventricular volumes in man, and this technique has been developed for measuring the distance between the interventricular septum and the posterior wall of the left ventricle using pulsed reflected ultrasound.
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Mechanical and myocardial factors in rheumatic heart disease with mitral stenosis.
Réjane M. Harvey,M. Irené Ferrer,Philip Samet,Richard A. Bader,Mortimer E. Bader,Andre Cournand,Dickinson W. Richards +6 more
TL;DR: Sixteen patients with rheumatic heart disease and pure mitral stenosis, studied by cardiac catheterization, are presented to illustrate the relative importance of mitral block and myocardial insufficiency in this disease.
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Abnormal Left Ventricular Contraction in Patients with Mitral Stenosis
TL;DR: It is hypothesized that a rigid “mitral complex” immobilizes the posterobasal area of the left ventricle in patients with mitral stenosis, thereby impairing left ventricular contraction, and that this impairment is an important factor in the reduced cardiac output of these patients.
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Quantitative Angiocardiography IV. Relationships of Left Atrial and Ventricular Pressure and Volume in Mitral Valve Disease
TL;DR: Quantitative angiocardiographic methods have been used to determine left ventricular volume andLeft ventricular mass (LVM) in 100 patients with isolated mitral valve disease and the data are presented with cumulative distribution curves suitable for reference standards.