Left Ventricular Stiffness Associated with Chronic Pressure and Volume Overloads in Man
نویسندگان
چکیده
منابع مشابه
Left ventricular stiffness associated with chronic pressure and volume overloads in man.
The relative effects of chronic pressure overload and chronic volume overload on left ventricular diastolic chamber stiffness were examined using a combined hemodynamic and ultrasonic technique in 27 patients. The slope of the left ventricular pressure-diameter relation in late diastole was measured and found to be steep in the groups with pressure or volume overload (9.0 ± 1.8 mm Hg/mm for pre...
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Diastolic function of the left ventricle was analysed in patients with different cardiac diseases: acute and chronic volume overload (in aortic and mitral incompetence), pressure overload and inappropriate ventricular hypertrophy (aortic stenosis and hypertrophic cardiomyopathy), congestive cardiomyopathy, and constrictive pericarditis. Most patients were receiving digitalis therapy at the time...
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We measured pressure-volume curves in nine excised dog ventricles and stress-strain curves in two to five muscle specimens from each ventricle to verify a derived formula that relates muscle stiffness to the ventricular pressure-volume curve. The assumptions underlying this formula are: (1) the ventricle is a uniform spherical shell, (2) all muscle fibers carry average stress and deform as if t...
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Left ventricular function, pressure-volume relationships, and wall motion were studied by sequential cineventriculography during acute myocardial ischemia, induced by atrial pacing, in 10 subjects. Observations made in this group were contrasted to data obtained during atnal pacing in a smaller normal group. An acute alteration in the pressure-volume relation occurred in five subjects during is...
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ژورنال
عنوان ژورنال: Circulation Research
سال: 1974
ISSN: 0009-7330,1524-4571
DOI: 10.1161/01.res.35.5.793