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Heart Failure Guideline Updates 2019 - American College of ...
• Systolic heart failure (HFrEF) –failure of contraction to pump blood out of the chambers. This is measured by ejection fraction (EF) or the percentage of blood that is ejected out of the ventricle. Normal is 50% or higher. • Diastolic heart failure (HFpEF) –failure of relaxation to fill the chambers with blood
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