Systolic vs Diastolic Dysfunction – Heart Failure

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Systolic Dysfunction
Systolic dysfunction is characterized by a decrease in myocardial contractility. A reduction in the left ventricular ejection fraction (LVEF) results when myocardial contractility is decreased throughout the left ventricle.

Causes:
– Dilation

Diastolic Dysfunction
Diastolic dysfunction refers to cardiac dysfunction in which left ventricular filling is abnormal and is accompanied by elevated filling pressures. Changes to the heart that increase stiffness (decrease in compliance).

Causes:
– Hypertrophy of heart
– Stiffness of heart

 

http://www.medscape.com/viewarticle/558296_2