نتایج جستجو برای: diastole
تعداد نتایج: 4129 فیلتر نتایج به سال:
Following publication of our article [1] the authors noted that the legends for Figure 1 and Figure 2 were incorrect. The correct legend for Figure 1 is: Sequence analysis of systemic ventricular flow during systole and diastole in Fontan patients. The vortex from the Fontan group was consistently shorter, wider and rounder. The vortices were located at the centre of the left ventricle througho...
T he pump performance of the left ventricle (LV) depends on its ability to cycle between two states: 1) a compliant chamber in diastole that allows the LV to fill from a low left atrial pressure and 2) a stiff chamber in systole that ejects the stroke volume at arterial pressure. The transitions from diastole to systole (contraction) and from systole to diastole (relaxation) are essential for t...
Results Two of the original 46 volunteers were excluded due to ECG irregularities. Data from one further volunteer was incomplete and therefore excluded from the final analysis. Results from the remaining 43 volunteers are in table 1. Global FA was higher in diastole than systole (0.56 v 0.47; p < 0.001). The global endocardial HA was significantly more right-handed in systole than diastole (34...
The main cardiovascular changes associated with aging included decreased heart rates, oxygen extraction, arterial stiffening, vasoconstriction, systolic blood pressure elevation, myocardial thickening, reduced diastolic filling rate, rhythmic rate changes, and action potential prolongation. Multifactorial risk can include the pathology of diseased. This study aims to ascertain relationship betw...
Impaired long-axis motion is a sensitive marker of systolic myocardial dysfunction, but no data are available that relate long-axis changes in systole with those in diastole, particularly in subjects with diastolic dysfunction and a 'normal' left ventricular (LV) ejection fraction. A total of 311 subjects (including 105 normal healthy volunteers) aged 20-89 years with variable degrees of systol...
SCD is a model for chronic and diffuse vasculopathy resulting in tissue infarction and ischemia-reperfusion injury. Much attention has been placed on diffuse endothelial disease in SCD. More recently, diastolic heart failure has been recognized as a significant cause of morbidity and mortality in the general population and more specifically in SCD patients. However, there has been a paucity of ...
The method used for pulse transit time (PTT) estimation critically affects the accuracy and precision of regional pulse wave velocity (PWV) measurements. Several methods of PTT estimation exist, often yielding substantially different PWV values. Since there is no analytic way to determine PTT in vivo, these methods cannot be validated except by using in silico or in vitro models of known PWV an...
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