نتایج جستجو برای: myocardial mechanical parameters
تعداد نتایج: 944133 فیلتر نتایج به سال:
We have found that myocardial oxygen consumption is linearly correlated with the systolic pressure-volume area in the canine left ventricle. This pressure-volume area is a specific area in the pressure-volume diagram that is circumscribed by the end-systolic pressure-volume relation line, the end-diastolic pressure-volume relation curve, and the systolic segment of the pressure-volume trajector...
OBJECTIVE Tissue Doppler imaging (TDI) is commonly used to evaluate regional ventricular contraction properties through the analysis of myocardial strain. During the clinical examination, a set of strain signals is acquired concurrently at different locations. However, the joint interpretation of these signals remains difficult. This paper proposes a model-based approach in order to assist the ...
BACKGROUND Continuous-flow left ventricular assist devices (LVAD) are increasingly used for patients with end-stage heart failure (HF). We analyzed the effects of ventricular decompression by continuous-flow versus pulsatile-flow LVADs on myocardial structure and function in this population. METHODS AND RESULTS Sixty-one patients who underwent LVAD implantation as bridge-to-transplant were an...
AIMS Adjunctive thrombectomy and embolic protection devices in acute myocardial infarction have been extensively studied, although outcomes have mainly focused on surrogate markers of reperfusion. Therefore, the effect of adjunctive devices on clinical outcomes is unknown. This study sought to determine whether the use of a thrombectomy or embolic protection device during revascularization for ...
Abstract Background The non-invasive assessment of myocardial work allows to evaluate LV performance by taking into account the effect load. Aim this study was acute and chronic impact percutaneous mitral valve repair (PMVR) on performance, in patients with severe primary regurgitation (PMR). Methods 71 (age: 77±9 years, females: 44%) PMR (effective regurgitant orifice: 0.57±0.31 cm2, volume: 8...
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