-366-INFLUENCES OF LEFT VENTRICULAR (LV) RELAXATION AND PRELOAD ON LV FILLING
نویسندگان
چکیده
منابع مشابه
Contribution of mitral annular dynamics to LV diastolic filling with alteration in preload and inotropic state.
Mitral annular (MA) excursion during diastole encompasses a volume that is part of total left ventricular (LV) filling volume (LVFV). Altered excursion or area variation of the MA due to changes in preload or inotropic state could affect LV filling. We hypothesized that changes in LV preload and inotropic state would not alter the contribution of MA dynamics to LVFV. Six sheep underwent marker ...
متن کاملThe art and science of predicting postrevascularization improvement in left ventricular (LV) function in patients with severely depressed LV function.
Left ventricular (LV) dysfunction is a well-established and powerful predictor of adverse outcomes (1). Indeed, the occurrence of severe LV systolic dysfunction (i.e., LV ejection fraction [LVEF] 35%), especially in the setting of clinical heart failure (HF), is associated with very poor survival if treated with medical therapy alone (2). In selected high-risk patients with severe LV dysfunctio...
متن کاملA systematic evaluation of left ventricular (LV) models for estimating LV volumes in children using cardiac cine (MRI)
Results Commonly used biplane[1] and triplane[1] ellipsoid models have significant mean percentage error (at least 9%) for EDV/ESV/EF (Table 1), and triplane model was more reproducible than bi-plane model. A linear-weighted model of biplane and parabola substantially diminishes percentage error for EDV, ESV and EF to 0.3±6.0%, 0.5±10.7% and 0.0±6.4% (aEDV = 0.4, bEDV=0.7; aESV = 0.9, bESV=0.2)...
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...
متن کاملPericardial influences on right and left ventricular filling dynamics.
The influence of the pericardium on right and left ventricular filling was studied using two-dimensional and Doppler echocardiography in 14 open-chest dogs. Doppler echo parameters of filling included early (E) and late (A) velocities and their ratio (E/A) for the mitral and tricuspid valves. Right and left ventricular volumes were calculated from orthogonal two-dimensional echocardiographic im...
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ژورنال
عنوان ژورنال: Japanese Circulation Journal
سال: 1986
ISSN: 0047-1828,1347-4839
DOI: 10.1253/jcj.50.569_1