ejection fraction

(redirected from Left ventricular ejection fraction)
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e·jec·tion frac·tion

the fraction of the blood contained in the ventricle at the end of diastole that is expelled during its contraction, that is, the stroke volume divided by end-diastolic volume, normally 0.55 (by electrocardiogram) or greater; with the onset of congestive heart failure, the ejection fraction decreases, sometimes to 0.10 or even less in severe cases.
Farlex Partner Medical Dictionary © Farlex 2012

ejection fraction

Left ventricular ejection fraction Cardiology The percentage of blood present in the left ventricle that is effectively pumped forward during systole to supply the peripheral circulation. See Congestive heart failure.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

e·jec·tion frac·tion

(EF) (ē-jek'shŭn frak'shŭn)
The fraction of blood contained in the ventricle at the end of diastole that is expelled during its contraction.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

ejection fraction

The ratio of the stroke volume to the end diastolic volume in the ventricles of the heart. In the healthy heart the volume of blood in the left ventricle at the end of diastole is approximately 140 ml and the stroke volume is about 90 ml. The ejection fraction (stroke volume/end-diastolic volume) is between 50 and 70 per cent. The ejection fraction of the right ventricle is similar. Ejection fraction is not a good predictor of clinical disability. See also DIASTOLIC HEART FAILURE.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

Ejection fraction

The fraction of all blood in the ventricle that is ejected at each heartbeat. One of the main advantages of the MUGA scan is its ability to measure ejection fraction, one of the most important measures of the heart's performance.
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Comparison and reproducibility of visual echocardiographic and quantitative radionuclide left ventricular ejection fractions. Am J Cardiol 1996; 77: 843-50.
Analysis by ROC curve produced an area under the curve of 0.945 (95% CI0.875 to 0.982) at a cut-off left ventricular ejection fraction of 50% (Fig.
Levels of NO, eNOS, MDA, SOD3, and Left Ventricular Ejection Fraction of the Patients.
Left ventricular ejection fraction: Comparison of results from planar and SPECT gated blood-pool studies.
During treatment, the systolic function of the left and right ventricles (according to the end-diastolic left-ventricular size (KDRLZH), right ventricle (KDRPZH), left ventricular ejection fraction (LVEF), right ventricular ejection phase (FIPZH), index thicker anterior wall of the right ventricle (ITPPZH), systolic pulmonary artery pressure (MPAP), as well as diastolic function (E/LVA; E/BPH) in patients from the first group returned to normal, and in patients from the control group was carrying a tendency to normalization.
Conclusion: Thirty one percent of the patients developed = 10% decline in left ventricular ejection fraction with the use of doxorubicin in the cumulative dose range of 300-400 mg/m2.
Definition of systolic heart failure is reduction of the left ventricular ejection fraction. Thus, its diagnosis is quite easy.
Researchers found that ICDs were given to 12 (13.0%; 95% CI 6.1%-19.9%) of 92 patients who met the eligibility criteria of left ventricular ejection fraction (LVEF) of 35%.
placebo (controls, n=28) for 8 weeks on brachial flow-mediated dilation (FMD) in patients with ischaemic LVSD(left ventricular ejection fraction <45%).
Left ventricular systolic function is commonly measured as the left ventricular ejection fraction. Evidence-based guidelines for heart failure make recommendations based upon this measurement (7).
Transthoracic echocardiography (TTE) demonstrated a left ventricular ejection fraction of 65% and a perimembraneous ventricular septal defect (VSD) jet with a 120 mmHg maximal gradient obtained by the continuous wave Doppler.
Plasma BNP levels also increase with decreasing physiological functional capacities, as measured by left ventricular ejection fraction (LVEF) or exercise-based evaluations [9].

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