Significance of Ejection Fraction
Ejection Fraction (EF) is a crucial measurement of the heart's pumping efficiency, representing the percentage of blood ejected from the left ventricle with each contraction. It is a key indicator of cardiac function, used to diagnose heart failure and predict patient outcomes. A normal EF indicates a healthy heart, while a reduced EF can signal heart abnormalities and is used to classify different types of heart failure. It is a clinically valuable measure used to classify heart failure patients based on their heart's ability to pump blood.
Synonyms: Left ventricular ejection fraction, Ventricular ejection fraction
The below excerpts are indicatory and do represent direct quotations or translations. It is your responsibility to fact check each reference.
The concept of Ejection Fraction in scientific sources
Ejection Fraction (EF) is a crucial measurement reflecting the heart's pumping efficiency, expressed as a percentage of blood ejected with each contraction. It's used to classify heart failure, assess severity, and predict outcomes. EF values help distinguish between heart failure types and are affected by factors like medication and other heart conditions.
From: South African Family Practice
(1) This is reduced to less than 45% in nearly all cases of peripartum cardiomyopathy, and echocardiography is the most reliable diagnostic modality.[1] (2) Ejection fraction is a measure of the heart's ability to pump blood, and patients with Fontan circulation may have a lower than average ejection fraction, although most are within a normal range.[2] (3) This is a measurement used to classify heart failure, which can be evaluated using an echocardiogram, clinically distinguishing between left- and right-sided heart failure, according to the text.[3] (4) Ejection fraction is a measure of the percentage of blood pumped out of the left ventricle with each heartbeat, and the text provides the mean ejection fraction for patients who had an echo report.[4] (5) This is a measurement of left ventricular function, and ACE inhibitors are indicated for patients with a reduced ejection fraction, such as ≤ 35% without heart failure.[5]
From: The Malaysian Journal of Medical Sciences
(1) Ejection fraction (EF) is the measurement of the amount of blood the left ventricle pumps out with each contraction.[6] (2) This is a measurement, or EF, of the percentage of blood leaving the heart with each contraction, and is used to classify heart failure and predict clinical outcomes.[7] (3) This is a measure of heart function assessed through echocardiography, and the study analyzes its values in young patients to evaluate the impact of acute coronary syndrome.[8] (4) A measurement of the percentage of blood leaving the heart each time it contracts, with the patient showing decreased global biventricular function (EF 20%).[9]
From: International Journal of Pharmacology
(1) Ejection fraction, a measure of the heart's pumping ability, showed improvement after renal denervation in patients with resistant hypertension.[10] (2) A measure of the percentage of blood pumped out of the left ventricle with each beat, which was significantly higher in the observation group after treatment.[11]
From: Onderstepoort Journal of Veterinary Research
(1) Ejection fraction is reduced in dilated cardiomyopathy, which is characterized by impaired systolic function and increased end-systolic blood pressure, as the heart adapts to maintain stroke volume.[12]
From: South African Journal of Psychiatry
(1) This is a measurement of the heart's pumping efficiency, and the patient's level was relatively normal, indicating a specific aspect of cardiac function.[13] (2) The text mentions that although decreased exercise capacity was associated with worse health status, two traditional measures of disease severity — this and ischaemia — were not.[14]