| EF study | Ejection-Fraction study |
|---|---|
| EF | ectopic focus; edema factor; ejection fraction; elastic fibril; electric field; elongation factor; e... |
| ExEF | ejection fraction during exercise |
| LVEF | left ventricular ejection fraction |
| REF | ejection fraction at rest; referred; refused; renal erythropoietic factor |
| PEP/LVET | pre ejection period to left ventricular ejection time |
|---|---|
| PEP/LVET | pre-ejection period to the left ventricular ejection time |
| EF | Ejection Fraction |
| GBEF | Gallbladder ejection fraction |
| LVEF | LV ejection fraction |
| ejection fraction | <cardiology> A measure of ventricular contractility, equal to normally 65 |
|---|
| milk ejection | Reflex in which tactile stimulation of nipples causes release of oxytocin which causes myoepithelial cells surrounding mammary alveoli to contract and expel the milk. Applies to humans and animals. (12 Dec 1998) |
|---|---|
| milk-ejection reflex | Release of milk from the breast following tactile stimulation of the nipple; the afferent path is postulated to exist from the nipple to the hypothalamus; the efferent limb is represented by the neurohypophysial release of oxytocin into the systemic circulation; contraction of myoepithelial elements within the breast, caused by oxytocin, moves milk into the collecting ducts and toward the nipple. Synonym: let-down reflex, milk let-down reflex. (05 Mar 2000) |
| ejection | 1. The act of ejecting or casting out; discharge; expulsion; evacuation. "Vast ejection of ashes." . "The ejection of a word." 2. <physiology> The act or process of discharging anything from the body, particularly the excretions. 3. The state of being ejected or cast out; dispossession; banishment. Origin: L. Ejectio: cf. F. Ejection. Source: Websters Dictionary (01 Mar 1998) |
| ejection murmur | A diamond-shaped systolic murmur produced by the ejection of blood into the aorta or pulmonary artery and ending by the time of the second heart sound component produced, respectively, by closing of the aortic or pulmonic valve. (05 Mar 2000) |
| ejection period | The period in the cardiac cycle when the semilunar valves are open and blood is being ejected from the ventricles into the arterial system. Synonym: ejection period. (05 Mar 2000) |
| ejection sounds | Click-like sounds during ejection from a hypertensive aorta or pulmonary artery or associated with stenosis (particularly congenital) of the aortic or pulmonic valve. (05 Mar 2000) |
| left ventricular ejection time | The time measured clinically from onset to incisural notch of the carotid or other pulse; properly the time of ejection of blood from the left ventricle beginning with aortic valve opening and ending with aortic valve closure. (05 Mar 2000) |
| aetiological fraction | <epidemiology> The reduction in disease when a risk factor is removed. If I* is the number of people that a risk factor is responsible for and I is the total number of cases over the same period, then the aetiological fraction is I*/I. Equivalently, the aetiological fraction is (I-Io)/I. Where Io is the number of cases in the absence of the risk factor. Also known as the attributable fraction. (05 Dec 1998) |
| amorphous fraction of adrenal cortex | Noncrystalline residue of an acetone extract of the adrenal cortex after crystalline steroids, e.g., corticosterone, deoxycorticosterone, etc., have been isolated. (05 Mar 2000) |
| attributable fraction | <epidemiology> The same as aetiological fraction. (05 Dec 1998) |
| recombination fraction | The proportion of progeny of a mating pair of specific genotype and coupling phase that are recombinant; there must be no differential selection among the possible types of progeny, and the recombination fraction should be the same regardless of the alleles involved or their coupling phase. (05 Mar 2000) |
| regurgitant fraction | The amount of blood regurgitated into a cardiac chamber divided by the stroke output; normally, no blood regurgitates; in patients with severe valvular lesions such as mitral or aortic insufficiency, regurgitation can approach 80%; this fraction affords a quantitative measure of the severity of the valvular lesion. (05 Mar 2000) |
| microsomal fraction | Artifactual vesicles formed from the endoplasmic reticulum when cells are disrupted. They are isolated by differential centrifugation and are composed of three structural features: rough vesicles, smooth vesicles, and ribosomes. Numerous enzyme activities are associated with the microsomal fraction. (glick, glossary of biochemistry and molecular biology, 1990; from rieger et al., glossary of genetics: classical and molecular, 5th ed) (12 Dec 1998) |
| mole fraction | The ratio of the moles of one component of a system to the total moles of all the components present. (05 Mar 2000) |
| human antihemophilic fraction | A lyophilised concentrate of factor VIII, obtained from fresh normal human plasma; used as a haemostatic agent in haemophilia. Synonym: antihemophilic globulin, human antihemophilic fraction. (05 Mar 2000) |
| ejection fraction |
The ejection fraction (EF) or, more correctly, left-ventricular ejection fraction (often abbreviated LVEF) is a measure of how much blood the left ventricle of the heart pumps out with each contraction. The normal left ventricle has an average volume of 100ml and with each heart beat ejects approximately 70 ml, the stroke volume. ...
Ãâó: en.wikipedia.org/wiki/Ejection_fraction
|
|---|---|
| ejection fraction |
This is the amount of blood pumped out of the heart with each beat. It is expressed as a percent. Normal value is 45-55%. It can be measured by special tests.
Ãâó: www.ehealthmd.com/library/heartfailure/HF_glossary...
|
| ejection fraction |
The ejection fraction is the amount of blood released from the heart's left ventricle when it contracts. It's called a "fraction" because it's expressed as a percentage of the total amount of blood in the left ventricle. For example, an ejection fraction of 80% means that when the left ventricle contracts, 80% of the blood is ejected into the vascular system.
Ãâó: www.pbs.org/secondopinion/episodes/heartfailure/me...
|
| ejection fraction |
The amount of blood pumped out of a ventricle during each heart beat. The ejection fraction evaluates how well the heart is pumping; Normally 50 - 70 percent.
Ãâó: www.clevelandclinic.org/heartcenter/pub/glossary/e...
|
| ejection fraction |
the measurement of the blood pumped out of the ventricles.
Ãâó: www.health.uab.edu/show.asp
|
Á¦Ç°¸í |
ÆÇ¸Å»ç |
º¸ÇèÄÚµå | ¼ººÐ/ÇÔ·® | ±¸ºÐ/º¸Çè±Þ¿© |
|---|
Á¦Ç°¸í |
ÆÇ¸Å»ç |
º¸ÇèÄÚµå | ¼ººÐ/ÇÔ·® | ±¸ºÐ/º¸Çè±Þ¿© |
|---|