The principal difference between systolic failure and diastolic failure is the ejection fraction.

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Systolic failure occurs when the heart is unable to contract properly and pump out enough blood, resulting in a decreased ejection fraction. Diastolic failure, on the other hand, occurs when the heart is unable to relax properly and fill with enough blood, resulting in a preserved or even increased ejection fraction. Therefore, the ejection fraction is a key factor in distinguishing between systolic and diastolic heart failure.

The Principal Difference Between Systolic Failure and Diastolic Failure Is