Stroke volume and ejection fraction

Common Questions and Answers about Stroke volume and ejection fraction


1124887 tn?1313758491 I've often found that crunching the numbers can paint a picture and a picture is worth a 1,000 words. Stroke Volume and/or Cardiac Output would provide a better measure of an athletic heart, but those aren't typically done on workup tests. Case in point, my LVEF is 72%. I have average exercise tolerance. I also know my heart is on the small side so my stroke volume is probably not that great compared to an athlete.
Avatar n tn To normally compensate EF increases (range 55-75%) by dilating the LV chamber and that increases contractual strength and blood volume in keeping with physics (FRANK/STARLING mechanism) thereby enhancing performance. The EF usually represents the percentage of blood pumped into circulation with each stroke, but with mitral valve insufficiency there is an amount something less than estimated EF goes into circulation as some blood flows back into the upper chamber.
391561 tn?1227050815 Coreg 25 x2, and accupril (ace inhibitor). Latest echo shows no improvement of ejection fraction. Still 24 % after 8 months on meds. Anyone have any opinion as to chances of any improvement from meds at this point? LV has reduced moderately from 6.94. I believe my heart suffered damage from serious auto accident (BFT). I was hoping for signs of an improvement.
1527234 tn?1291775042 In this phase due to F/S phenomonon the ventricular myocardium is no longer able to contract adequately to compensate for the volume overload of mitral regurgitation (volume overload can be do to other causes), and the stroke volume of the left ventricle will decrease. The decreased stroke volume causes a decreased forward cardiac output and an increase in the end-systolic volume dilates left ventricle.
Avatar f tn Stroke Volume 40 ml 7. Cardiac Output 2.1 L/min 8. Myocardial mass 157 g 9.The ejection fraction is 20%. The recommendation is aggressive medical therapy for coronary artery disease. I thought his graphs were patent - I am really confused, and we are scheduled to see the doctor this Friday. Is he experiencing a heart failure? Any help would be greatly appreciated.
Avatar n tn While a stroke volume of 47 is low this is not a direct measurement from the echo-- it is calculated and if everything else is normal it is unlikely that the symptoms are cardiac.
Avatar m tn My ejection fraction is inconsitant, Ranging from a high of 42 in 1979 to a recent low of 16. and yet I play doubles tennis 3 days a weeks for 2 hours with no shortness of breath. Do modest weights, walk a mile a day, 6 foot 2, 195 pounds, 36 waist. I was off meds for 3 days prior to test. Is it possible that attrial fribullation, pvc's can lower my ejection fraction number? I am 74 and feel well. my HDL is 40 , LDL 40 VlDL 8. I take coumadin for attrial fribullation.
Avatar f tn I also thought that EF was based on a formula (EDV-ESV = stroke volume. Then the stroke volume is divided by EDV = Ejection Fraction). Is it done calculated that way? I didn't know it was based on visual. One person might view it differently than another. How can that be accurate? I apologize for the question again, but I remain somewhat confused. I appreciate your help.
Avatar m tn The heart dilates and this is early compensation for systolic dysfunction and decreased cardiac output is accomplished by increasing the stroke volume, the heart rate, or both (cardiac output = stroke volume X heart rate), which is also accompanied by an increase in peripheral tone (dilation). If the underlying cause for compensation is not treated there is overcompensation and the left ventricle dilates to the degree that impairs contractions.
Avatar n tn velocity, radial and circumferential strain, local and global Simpson VOLUME, global and local ejection fraction (EF) ratio, and segmental volume. Some of these features, including velocity, circumferential strain, and local EF ratio, are based on the inner (endocardial) contour. Due to the patient examination protocol, only the systole (i.e. contraction phase of the heart) is recorded for some patients.
Avatar m tn If your ultrasound was OK, (which is the gold standard in determining heart and heart wall sizes) I wouldn't worry at all. 80% ejection fraction (I also had 80%) is essentially a sign of a strong heart, unless your doctor mentioned diastolic failure (which is often a result from long standing hypertension, where the heart walls increase in size but aren't able to relax when the heart fills up). Maybe you were a bit anxious during the test? I was. And that makes the heart contract stronger.
Avatar n tn Volume of left venticle after pumping contractions subtracted from volume after filling and that result divided by by filling volume provides the ejection fraction. There is a margin of error of about 5% plus or minus and in absolute terms there is a variation of stroke volume to help maintain a balance of blood flow of the leftside of the heart with the rightside.
Avatar m tn I've have several test over six month period to determine the health of my heart, several Echocardiograms, a Nuclear Stress Gated Spect, and an MRI. The MRI and Nuclear Stress Gated Spect, showed an ejection fraction of 59%. My Echocardio has varied between a low of 45 and, 51, & high of 56. Which of these test is most accurate? Should I consider a MUGA, as I've heard this is the most sensative non-invasive test. I have a dilated left ventricle but was diagnosed with an athlete's heart.
Avatar m tn That is a seperate measurement, called the Stroke Volume. Can you find out what his SV is? It sounds like his heart was damaged at a young age and has had time to adapt. What a great case study this would make though, someone should study it more to find out how his heart adapted. Given the LVEF, it doesn't sound like his LV contracts very well. SOmething has to be making up for it. Perhaps the LV grew larger? Other chambers took over?
213398 tn?1202674074 The EF is one factor that maintains a balance of blood flow between left and right sides of the heart. Cardiac output is a function of stroke/volume for 1 minute. Pressure expands the left ventricle and increases preload (filling) . An increased preload increases stroke volume through the Frank Starling mechanism and that would be an increase in EF. Frank Starling mechanism can be campared to a hand spring as an analogy.
20814293 tn?1519963369 My ejection fraction was 84%, The ekg was inconclusive due to baseline ekg changes, and LVH was written next to the ekg result area. The nurse who called said there is nothing to worry about, as no blockages were detected. I can't get in to see the cardio for weeks for the followup and was wondering if the high ef and LVH are cause for concern. Thank you for any replies.
Avatar m tn The difference between end-diastolic and end-systolic volumes is the stroke volume, the volume of blood ejected with each beat. Ejection fraction (Ef) is the fraction of the end-diastolic volume that is ejected with each beat; it is stroke volume divided by end-diastolic volume. Normal in a man is 50-68%. With a given sized ventricle and its volume, and its ability to contract, I fail to see how a faster or slower heart rate will affect the volume of blood leaving the chamber.
Avatar m tn 4 mm LV Volume (diastole) 154 mm Not measured 118 mm LV Volume (systole) 114 mm Not measured Not measured Stroke Volume 42 ml 56 ml 39 ml Heart Rate 84 bpm 92 bpm 85 bpm Cardiac Output 3.5 Liters/minute 5.2 Liters/minute 3.
38309 tn?1270893703 6% RV end diastolic volume 122.8 cc RV end systolic volume 50.8 cc RV stroke volume 72 cc RV measurements: RA end systolic dimension 4.9 cm RV end diastolic dimension 5.5 cm Motion: There are no segmental wall motion abnormalities noted. Aortic valve analysis: (phase contrast flow measurements) Peak velocity: 130 cm/s Calculated peak gradient (modified Bernoulli equation): 6.8 mmHg Forward volume: 82.
1243196 tn?1526391449 1. Normal biventricular chamber size, wall motion and global systolic function. Viability imaging shows faint nonischemic enhancement, which could represent old inflammation, primary cardiomyopathy or fibrosis. 2. No MRI criteria for ARVC. I was wondering about the faint nonischemic enhancement would mean?? Is it something that is a cause of concern? Thank you!
Avatar m tn An echo calculates heart chamber diminsions and volume of blood pumped with each stroke. The math equation is diastole volume (peak filling) minus systole (volume after pumping) divided by diastole for the percentage. You can calculate your fraction shortening (FS) which is similar to EF but relies on dimensions rather than volume. To calculate subtract systole dimension from diastole dimension and divide by diastole for percentage. FS is an estimate of myocardial contractility.
642877 tn?1281802882 Cardiac output determines your bodies response. It is a somple math equation. Stroke volume (how strong and effective your pump is) x rate. I had to get a pacemaker to deal with all the meds that are used to treat my heart. I love the thing. I makes daily life a more sure thing. It was the highlight of 2008. Good luck with the meds. It is a really small dose of one of the more innocuous medicines and so it isn't likely to cause you too much problems.
Avatar m tn The first stage is to identify the cause. Second, the Cardiologist needs to decide the best options for as much recovery as possible. If the stroke volume has become stable at 25% and reasons are unknown, it is likely through infection and recovery will start when it's under control. Medication is available to make the heart muscle feel more comfortable. Virtually every case of heart failure is different, so the outcome is not possible to state, especially with such little information.
Avatar n tn html 50% and above is normal, it is very confusing when different sites list 55% and above as normal, 50% and above is normal. Remember ejection fraction is the percentage of the stroke volume (SV) of the end diastolic volume (EDV) so a EDV of 80 with a SV of 40 would be an EF of 50% which would be considered normal.
Avatar f tn That is ( stroke volume/edv)×100. Stroke volume = amount your heart pumps with each beat Heart rate is= beats per minute Qt or CO ( cardiac output)= sv×hr ( so total pumped in 1 minutes) Edv= is end diastolic volume. So the amount of blood left in the ventricle when it is done filling Esv= is end systolic volume which is the amount of blood left in the ventricle after a full contraction. I hope this helps with terminology at least.
Avatar m tn Stroke volume (SV) depends on body size. A better measure for heart function is ejection fraction which is also measured on echo. How high is yours? If your ejection fraction is normal and the heart relaxes properly between the beats (diastolic function) you don't have heart failure or cardiomyopathy.