Tankless water heaters save money in the long run, but initial costs are higher than tank models. Endless hot water, additional storage space and lower energy bills are just a few reasons homeowners are switching to tankless water heaters.
Ejection Fraction Heart Failure Measurement. The ejection fraction (EF) is an important measurement in determining how well your heart is pumping out blood and in diagnosing and tracking heart failure. A significant proportion of patients with heart failure happen to have a normal ventricular ejection fraction at echocardiography during examination.
Ask a Texas Heart Institute Doctor Informed patients make better patients. Question: What is the normal result for left ventricular ejection fraction (LVEF)? Is normal ejection fraction 50-70, or 55-70? I've seen a lot of articles that disagree on what is a normal EF. While anything >55 is normal and anything <50 is abnormal, what about that grey area of 50-54% EF? And is EF very complex to measure?