Congestive heart failure is a condition in which the heart muscle fails to supply adequate forward blood flow to vital organs. Systolic heart failure results when the heart muscle is weakened by processes such as heart attacks, alcohol abuse, infections, or rare disorders affecting the muscle itself.
Diastolic heart failure results when the heart muscle fails to relax properly. Like a spring that stores energy as it is stretched, the heart muscle does the same. When it loses this elasticity, or “spring-like” quality, diastolic heart failure results. Despite its misleading name, "heart failure" does not mean that your heart suddenly stops working.
Instead, heart failure develops slowly as your heart muscle gradually weakens. The term "failure" refers to your heart's inability to pump enough blood to meet your body's needs.
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