I am analyzing a set of medical data to identify LVEF and heart failure problems. I am not sure which indicators and values to analyze. Thanks for helping.
2007-08-01 20:30:11 · 3 answers · asked by Sam 1 in Health ➔ Diseases & Conditions ➔ Heart Diseases
The following is from wikipedia, but put simply it is the amount of blood ejected by the left ventricle.
By definition, the volume of blood within a ventricle immediately before a contraction is known as the end-diastolic volume. Similarly, the volume of blood left in a ventricle at the end of contraction is end-systolic volume. 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; that is, it is stroke volume (SV) divided by end-diastolic volume (EDV):
In a healthy 70-kg (154-lb) man, the SV is approximately 70 ml and the left ventricular EDV is 120 ml, giving an ejection fraction of 70/120, or 58%. Right ventricular volumes being roughly equal to those of the left ventricle, the ejection fraction of the right ventricle is normally equal to that of the left ventricle within narrow limits.
2007-08-02 00:07:39 · answer #1 · answered by Fred S 5 · 0⤊ 0⤋
Ejection Fraction is analogies to Pump efficiency, anything over 50% is good.
2007-08-02 11:47:11 · answer #2 · answered by jimmymae2000 7 · 0⤊ 0⤋
I obtained copies of my MUGA and it showed the volumes of the LV expanded and contracted. That's how they calculated EF.
All I can offer.
2007-08-02 03:40:05 · answer #3 · answered by Anonymous · 0⤊ 0⤋