Left Ventricular Ejection Fraction (LVEF or often just EF) is the % of blood in your main heart chamber that is pumped out each time the heart beats. We often think that the heart empty completely each time it beats, but it doesn't. The normal percentage is 50-75%. A lower number may indicate a weakened left ventricle, a higher number can indicate something stressing the body or a variety of other conditions. It can also be normal. During exercise (or anxiety attacks, etc.), LVEF is higher.
Hypertension is a high blood pressure, a high pressure in your arteries. It's not linked to LVEF (however, an abnormally high LVEF can in some cases cause a high blood pressure or a high difference between systolic and diastolic pressure.
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