Evaluation of Left Ventricular Performance
نویسندگان
چکیده
منابع مشابه
Evaluation of Left Ventricular Performance
In the first part of the study, the influence of changes in preload and afterload on mean circumferential fiber shortening velocity, Vcf, was investigated in the absence of any extrinsic cause for change in the contractile state of the left ventricle (LV) of seven dogs. In five of seven dogs in which afterload was controlled and contractility was unchanged, there was a significant negative corr...
متن کاملLeft Ventricular Diastolic Performance
We used first-pass radionuclide angiocardiography to assess filling fraction during the first third of diastole, peak filling rate and peak filling rate during the first third of diastole as indexes of left ventricular diastolic performance at rest and after upright bicycle exercise in 32 normal patients and 68 patients with coronary artery disease. The mean filling fraction was unchanged from ...
متن کاملLeft Ventricular Performance
THLIE pharmacologic effects of digitalis preparations on the circulatory system have been the subject of numerous investigations in both animals and man. Recently, studies in dogs 1 and man,2' 3as well as experimental work on the proteins of the contractile element of heart muscle,4 have demonstrated that digitalis directly augments the force of myocardial contraction. Most investigations in ma...
متن کاملRegional Left Ventricular Performance
The relationship of abnormal regional myocardial performance to left ventricular (LV) function 2-12 months following transmural myocardial infarctfon was investigated in 25 patients by quantitative biplane angiocardiography. Abnormally contracting segments (ACS) (akinetic or dyskinetic) of the LV were identified in 24 patients. Their sites correlated with the electrocardiographic locations of i...
متن کاملVENTRICULAR PERFORMANCE Left ventricular filling dynamics : influence of left ventricular relaxation and left atrial pressure
Peak rapid filling rate (PRFR) is often used clinically as an index of left ventricular relaxation, i.e., of early diastolic function. This study tests the hypothesis that early filling rate is a function of the atrioventricular pressure difference and hence is influenced by the left atrial pressure as well as by the rate of left ventricular relaxation. As indexes, we chose the left atrial pres...
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ژورنال
عنوان ژورنال: Circulation
سال: 1974
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.49.5.925