Myocardial relaxation: effects of preload on the time course of isovolumetric relaxation.
نویسندگان
چکیده
منابع مشابه
LABORATORY INVESTIGATION VENTRICULAR PERFORMANCE Myocardial relaxation: effects of preload on the time course of isovolumetric relaxation
We studied the effect of an isolated increase in preload on isovolumetric relaxation in the intact dog heart and isometric relaxation in isolated cardiac muscle (dog and rat) preparations. In eight anesthetized dogs, 8 to 12 ml of blood was infused into the left ventricle during a single diastole. The exponential time constant (T) of isovolumetric relaxation was measured in single-beat experime...
متن کاملVENTRICULAR PERFORMANCE Myocardial relaxation : effects of preload on the time course of isovolumetric relaxation
We studied the effect of an isolated increase in preload on isovolumetric relaxation in the intact dog heart and isometric relaxation in isolated cardiac muscle (dog and rat) preparations. In eight anesthetized dogs, 8 to 12 ml of blood was infused into the left ventricle during a single diastole. The exponential time constant (T) of isovolumetric relaxation was measured in single-beat experime...
متن کاملMyocardial relaxation: effects of preload on the time course of isovolumetric relaxation.
We studied the effect of an isolated increase in preload on isovolumetric relaxation in the intact dog heart and isometric relaxation in isolated cardiac muscle (dog and rat) preparations. In eight anesthetized dogs, 8 to 12 ml of blood was infused into the left ventricle during a single diastole. The exponential time constant (T) of isovolumetric relaxation was measured in single-beat experime...
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Several studies have been performed in patients with a variety of myocardial diseases that have identified a prolongation of r. However, it is not clear whether prolongation of represents abnormal myocardial physiology or the effect of excessive load associated with a particular disease process. Accordingly, we evaluated the effect on r of an isolated decrease in preload induced by inferior ven...
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ژورنال
عنوان ژورنال: Circulation
سال: 1986
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.73.5.1037