LVEF definition
Examples of LVEF in a sentence
Within 7 days of the index MI, the patient will undergo an echocardiogram to determine LVEF.
There must be clinical impairment of heart function resulting in the permanent loss of ability to perform physical activities for a minimum period of 30 days to at least Class 3 of the New York Heart Association classification’s of functional capacity (heart disease resulting in marked limitation of physical activities where less than ordinary activity causes fatigue, palpitation, breathlessness or chest pain) and LVEF of 40% or less.
CMR, cardiovascular magnetic resonance imaging; 2D TTE, 2-dimensional transthoracic echocardiography; LVEDV, left ventricular end- diastolic volume; LVESV, left ventricular end-systolic volume; LVEF, left ventricular ejection fraction; LV, left ventricular.
In each subject, assessments of LV volumes and LVEF were performed according to the recommendations of the American Society of Echocardiography [4] following the Modified ▇▇▇▇▇▇▇’▇ rule.
The preliminary data of this study were presented at the American College of Cardiology 2015 scientific session.18 Between 2006 and 2015, 260 heart failure patients with a LVEF ≤35% underwent surgical left ventricular restoration, CorCap device implantation, or LVAD implantation.
The pathophysiological hallmark of HFpEF is an abnormal rise in left ventricular filling pressures during exercise despite a normal LV ejection fraction (LVEF, a marker of systolic function), leading to exertional breathlessness.
An accurate LVEF measurement is highly important as it is frequently used to determine clinical indications, e.g. for implantable cardioverter defibrillator (ICD) implantation (LVEF ≤35%), heart failure pharmacotherapy (LVEF ≤40%), or classification of heart failure patients in the new category of heart failure with mid-range ejection fraction (HFmrEF, 40-49%) [18-20].
These results suggest that the ▇▇▇▇▇▇▇’▇ biplane summation of disk method to determine LVEF in 2D TTE post-processing is more inaccurate in lower ranges of LVEF.
The sample size of the study was determined for the primary efficacy measure, which was LVEF as measured by CMR at four months after the index event.
In clinical practice, LVEF remains widely used as a biomarker for risk stratification.