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Topic: Ejection fraction

	Ejection fraction - Wikipedia, the free encyclopedia
		Ejection fraction is calculated by dividing the volume ejected from a ventricle (called the stroke volume, SV) by the volume of blood in the ventricle after filling (end-diastolic volume, EDV):
		The ejection fraction is one of the most important predictors of prognosis; those with significantly reduced ejection fractions typically have a poorer prognoses.
		Ejection fraction is commonly measured by echocardiography, in which the volumes of the heart's chambers are measured during the cardiac cycle.
	en.wikipedia.org /wiki/Ejection_fraction (387 words)

	Ejection fraction: Facts and details from Encyclopedia Topic (Site not responding. Last check: 2007-10-08)
		Therefore the ejection fraction can be calculated as the volume ejected during ventricular systole divided by the volume of blood in the left ventricle at the end of filling i.e.
		The most commonly used method to measure the ejection fraction is echocardiography[Click link for more facts about this topic].
		[Follow this hyperlink for a summary of this subject] for the measurement of ejection fraction is ventriculography.
	www.absoluteastronomy.com /encyclopedia/e/ej/ejection_fraction.htm (605 words)

	Ejection Fraction - Page 1 - HeartCenterOnline:
		“Ejection” refers to the amount of blood that is pumped out of the heart’s main pumping chamber during each heartbeat.
		Therefore an ejection fraction is a percentage of the blood within the chamber that is pumped out with every heartbeat.
		A low ejection fraction could be a sign that the heart is weakened.
	heart.healthcentersonline.com /heartfailure/ejectionfraction.cfm (334 words)

	FastHeartBeat.Com - Heart Rhythm Conditions Diagnosis (Site not responding. Last check: 2007-10-08)
		The ejection fraction of the heart is the fraction or proportion of blood that the heart pumps (or ejects) out of the left ventricular chamber with each heartbeat.
		A low ejection fraction is one of the key indicators used to identify people who are at risk for sudden cardiac arrest.
		Ejection fraction is usually measured using an echocardiogram (echo).
	www.fastheartbeat.net /sca/diagnosis.do (282 words)

	FastHeartBeat.Com - Frequently Asked Questions (Site not responding. Last check: 2007-10-08)
		Ejection fraction (EF) is a measurement of the heart's ability to pump blood.
		Ejection fraction is also the a key indicator of risk for sudden cardiac arrest.
		Ejection fraction is usually measured using an echocardiogram.
	www.fastheartbeat.net /sca/faq.do (1612 words)

	Ejection Fraction - Page 6 - HeartCenterOnline:
		An ejection fraction is a measurement of the amount of blood pumped out during this second, emptying stage.
		Finally, the ejection fraction is a measurement of the amount of blood pumped from the heart with each heartbeat.
		Therefore a patient with a normal ejection fraction that fails to rise with exercise could be diagnosed with heart failure or cardiomyopathy.
	heart.healthcentersonline.com /heartfailure/ejectionfraction6.cfm (602 words)

	Barnes-Jewish Hospital - Understanding Ejection Fraction
		Ejection Fraction (EF) is a measurement used by physicians to determine how well your heart is functioning.
		"Ejection" refers to the amount of blood that is pumped out of the heart's main pumping chamber, the left ventricle, during each heartbeat.
		Ejection fraction is a key indicator of heart health.
	www.barnesjewish.org /groups?NavID=2850 (525 words)

	DCRI: News: Weekly News Story
		Using the left ventricular ejection fraction (LVEF) as the common denominator, patients with an ejection fraction of 30 percent or less were at highest risk within the first 30 days of a heart attack, according to the study results.
		While the increased early rate of sudden death was highest among patients with the lowest left ventricular ejection fraction, the high incidence was not restricted to patients with the lowest left ventricular ejection fraction.
		This risk is greatest among patients with the lowest left ventricular ejection fraction (30 percent or less), but even patients with a high ejection fraction (more than 40 percent) are at substantially increased risk in the first 30 days after a heart attack.
	www.dcri.duke.edu /news/Archives/2005/2005-06-24.jsp (782 words)

	Heart1.com - What's Your Ejection Fraction? You Should Know
		Measuring your ejection fraction is a simple, painless way for a doctor to monitor the your heart’s health following a heart attack.
		Ejection fraction is the percentage of blood pumped from your large heart chamber (ventricle) with each heartbeat.
		Ejection fraction, or EF, usually refers to LVEF, while doctors usually specify right ventricle ejection fraction if they are referring to the less common measurement.
	www.heart1.com /news/mainstory.cfm/16/1 (522 words)

	Management of Acute Decompensated Heart Failure In the Emergency Department -- Frequently Asked Questions
		The ejection fraction is the amount or percentage of blood pumped from the heart with each beat.
		There are patients who have a normal ejection fraction who still have heart failure, and patients with low ejection fractions who have no symptoms of heart failure whatsoever.
		Because it is relatively easy to measure, the ejection fraction has become a common measure to follow to assess stability and the response to therapy.
	www.clevelandclinicmeded.com /hfed/faq/pttests7.htm (429 words)

	Surgery for left ventricular aneurysm (Site not responding. Last check: 2007-10-08)
		Evolution of ejection fraction (pre and postoperatively) in a patient with a large left ventricular aneurysm operated on for angina and inducible ventricular tachycardia.
		The preoperative theoretical contractile ejection fraction (CEF) is 30%.
		Both ejection fractions increased after surgery; the mean increase for the global ejection fraction was 17%, and for the contractile ejection fraction, 5% (Fig.
	www.ccm.mc /publications/article01.html (3965 words)

	Evidence Against (Site not responding. Last check: 2007-10-08)
		Thirty patients with cardiomyopathy and chronic left ventricular dysfunction (ejection fraction less than 35%) were randomized to a double-blind cross-over trial of 100 mg oral CoQ10 daily versus placebo, each for 3 months.
		The study was a randomized, double-blind, controlled trial to determine the effect of coenzyme Q10 (200 mg daily) or placebo on peak oxygen consumption, exercise duration, and ejection fraction.
		Left ventricular ejection fraction (measured by radionuclide ventriculography) and peak oxygen consumption and exercise duration (measured by an evaluation using the Naughton protocol) were measured.
	altmed.creighton.edu /coq10/evidence_against.htm (296 words)

	July 2004 Case Study
		The ejection fraction studies were performed to confirm the physician’s diagnosis.
		As this tool became more popular, the patients having ejection fraction studies were not as likely to have been as extensively diagnosed as the patient pool used in the clinical trials.
		It was determined that the patient did not have an obstruction, although she did have a low gallbladder ejection fraction.
	www.nuclearonline.org /Newsletter/CaseStudy704.htm (722 words)

	HFSA: Diabetic Patients with Angina Undergoing Enhanced External Counterpulsation Therapy: The Effect of Low Ejection ...
		In this prospective observational study, patients were divided into two groups; 226 patients had an ejection fraction that was less than or equal to 35 percent, and 666 had an ejection fraction that was higher than 35 percent.
		The researchers found that 76 percent of those with low ejection fraction were more likely to be men compared to 68 percent of those with a higher ejection fraction (p<0.05); myocardial infraction was seen in 85 percent and 63 percent, respectively (p<0.001); and congestive heart failure in 70 percent and 29 percent, respectively (p<0.001).
		Seventy-eight percent (78 percent) of patients with low ejection fraction were able to complete the treatment course compared to 83 percent; however, there was a significantly higher incidence of congestive heart failure, 7.5 percent compared to 2.6 percent (p<0.01), and deaths during the treatment period, 1.8 percent deaths compared to 0.0 percent (p<0.01).
	www.docguide.com /dg.nsf/PrintPrint/D61699F1A70CA1F885256C41006AEB49 (547 words)

	Early prediction of improvement in ejection fraction after acute myocardial infarction using low dose dobutamine ...
		Early prediction of improvement in ejection fraction after acute myocardial infarction using low dose dobutamine echocardiography -- Nijland et al.
		Early prediction of improvement in ejection fraction after acute myocardial infarction using low dose dobutamine echocardiography
		ejection fraction were determined from apical views using the
	heart.bmjjournals.com /cgi/content/abstract/88/6/592 (276 words)

	Aortic Stenosis - Treatment - CardiologyChannel
		The two main signs of decompensation are (1) dilation of the left ventricle and (2) loss of vigorous contraction of the left ventricle (falling ejection fraction).
		Patients with ejection fractions of approximately 40% to 45% have mildly depressed ejection fractions; those with ejection fractions of approximately 30% to 40% have moderately depressed ejection fractions; and those with ejection fractions of 10% to 25% have severely depressed ejection fractions.
		Even a slight drop in the ejection fraction can be an indication to proceed with valve replacement surgery.
	www.cardiologychannel.com /aorticstenosis/treatment.shtml (931 words)

	Know Your Ejection Fraction for a Healthy Heart - February is American Heart Month
		An ejection fraction of 50 percent means the ventricle spurts out half its volume each time it contracts.
		Healthy ejection fractions are 50 percent or higher; lower ejection fractions can mean cardiomyopathy - a disease of the heart muscle that saps the muscle's strength.
		For most patients on Medicare with cardiomyopathy and an ejection fraction of 30 percent or less, a recent announcement by the federal government provides for expanded coverage of implantable cardioverter defibrillators (ICDs), which can interrupt cardiac arrest by monitoring the heart's rhythm and delivering an electrical shock when a life-threatening arrhythmia is detected.
	www.medicalnewstoday.com /medicalnews.php?newsid=19684 (433 words)

	Heart Attack Survivors: Know Your Ejection Fraction - Neighborhood Heart Watch
		Clinical studies show that a person's ejection fraction, or EF, is the number-one predictor of risk for sudden cardiac death (SCD), a condition which claims more than 400,000 American lives each year.
		The tools include knowing one's ejection fraction, which can easily be measured by echocardiography--a simple, painless ultrasound exam of the heart--or by other tests.
		A normal EF is 55 percent or higher, while those with an ejection fraction of 40 percent or lower should be tested further to determine if an abnormal heart rhythm puts them at high risk for sudden cardiac death.
	www.cbhi.org /heartwatch/newsletter/article_28.shtml (370 words)

	What precautions should be taken after a bypass? - Heart - DoctorNDTV (Site not responding. Last check: 2007-10-08)
		Ejection fraction of 40-45% is definitely mildly deranged but in our normal day to day activities, this ejection fraction is very unlikely to create any problem.
		Infact barring heavy physical exertion in form of playing 3 sets of Tennis or Climbing Mountains, with this ejection fraction, there should be absolutely no restriction whatsoever in your day to day life.
		Regarding your second question, is it possible to increase the ejection fraction by 5-10% points because of recruitment of that pit of muscles of the heart which are not converted into scar but which were hibernating because of lack of blood supply.
	www.doctorndtv.com /FAQ/detailfaq.asp?id=3909 (328 words)

	ACC Media, Journals & News - News Releases
		However, the rates of functional decline were similar among those with preserved and depressed ejection fraction (30 percent vs. 23 percent, respectively; p = 0.14).
		While the Yale study classified patients as having either preserved or depressed ejection fraction, Dr. Zile said he prefers terms that identify the underlying dysfunction, so that patients with preserved ejection fractions would be said to have diastolic heart failure, as opposed to systolic heart failure.
		Krumholz said that although he agrees patients with preserved ejection fraction probably have diastolic heart failure, his research team measured only ejection fractions, not diastolic heart function, so they felt it was more precise to use the ejection fraction terminology.
	www.acc.org /media/releases/highlights/2003/may03/ejection.htm (867 words)

	HealthLINK: Cardiac: Trial may widen use of cardiac defibrillators - Yale-New Haven Hospital
		A normal ejection fraction is between 50 and 75 percent.
		A normal ejection fraction is at least 50 percent; anything less indicates a problem—it means the heart is pumping out less than half of the blood into the rest of the body—and the heart's effectiveness as a pump is severely impaired.
		Heart attack survivors should know their ejection fraction, and those with a low ejection fraction or symptoms of heart failure (such as shortness of breath or swelling of the legs) should consult a cardiologist to see whether they might benefit from an ICD.
	www.ynhh.org /healthlink/cardiac/cardiac_7_03.html (1578 words)

	Heart failure prognosis relating to the ejection fraction :: The Doctors Lounge(TM)
		Somebody told me that the ejection fraction banding of mild, moderate and severely impaired LV systolic function can help determine prognosis of Heart failure.
		The term ejection fraction refers to the percentage of blood that is pumped out of a filled ventricle with each heartbeat.
		Because the left ventricle is the heart's main pumping chamber, ejection fraction is usually measured in the left ventricle.
	www.thedoctorslounge.net /cardiology/forums/viewtopic.php?t=4652 (399 words)

	NM/PET - GENIE Processing & Review - Gallbladder EF (Gallbladder Ejection Fraction) (Site not responding. Last check: 2007-10-08)
		The Gall Bladder Ejection Fraction (GBEF) protocol allows the EF to be found from a dynamic dataset which is acquired during the emptying phase of the study, i.e.
		While an emptying curve is generated and displayed for reference, the EF is computed from gall bladder and background ROIs on individual images to eliminate the erroneous effects of possible patient motion during the study.
		The gallbladder ejection fraction is based on actual image counts rather than being derived from curve points.
	www.gehealthcare.com /inen/rad/nm_pet/products/workstation/gbef.html (227 words)

	MSWorld-Resource Center-News-Ventricular Function Decreased In MS (Site not responding. Last check: 2007-10-08)
		There is a decrease in heart ventricular ejection fraction in patients with multiple sclerosis, possibly due to the autonomic impairment associated with the disease.
		The radionuclide angiocardiography revealed pathological results for right, left and both ventricular ejection fractions in 25 percent of multiple sclerosis patients.
		Further physiological studies are required to determine factors responsible for the decrease of ventricular ejection fractions in multiple sclerosis."
	www.msworld.org /Resource_Center/news/n02ventricular.htm (213 words)

	Can the ejection fraction (pumping ability of the heart) be restored after a bypass? - Heart - DoctorNDTV (Site not responding. Last check: 2007-10-08)
		Ejection fraction is the measure of the pumping ability of the heart.
		However fall in ejection fraction due to lack of blood supply increases following bypass surgery.
		Patients who have dysfunction of LV (low ejection fraction) need to be in follow up of their cardiologist for optimization of drugs.
	www.doctorndtv.com /faq/detailfaq.asp?id=3634 (334 words)

	Measuring left ventricular volume and ejection fraction with the biplane Simpson's method -- Otterstad 88 (6): 559 -- ...
		Early prediction of improvement in ejection fraction after myocardial infarction using low dose dobutamine echocardiography.
		Prognostic significance of serial changes in left ventricular ejection fraction in patients with congestive heart failure.
		Quantitation of left ventricular volumes and ejection fraction in post-infarction patients from biplane and single plane two-dimensional echocardiograms.
	heart.bmjjournals.com /cgi/content/full/88/6/559 (1147 words)

	SPINAL ANAESTHESIA AND LEFT VENTRICULAR EJECTION FRACTION
		Data was analysed by the Student t test, and the conclusion was that the changes in the ejection fraction of the left ventricle were most significant in the subgroup 1 (p < 0,01).
		Spinal anaesthesia induces very little changes in the LV ejection fraction, arterial blood pressure and heart rate in patients that do not suffer from angina pectoris.
		Statistically significant changes of LV ejection fraction occured in patients suffering from stable angina pectoris that were positioned in the head - up position after the induction of the spinal anaesthesia.
	www.csen.com /anesthesia/ejection-fraction.htm (1043 words)

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