IM/Thera

  1. Contraction power is OK but relaxation (diastole) is reduced       
  2. ventricular cavity gets smaller       
  3. less  blood at the end of diastole, so SV reduced, CO also reduced.( vent. is small & stiff)

Ejection fraction normal

  • Low SV (stroke volume)
  • Low CO
  • Normal or preserved EF

Diastolic failure is also called heart failure with preserved EF (HFpEF)

FeatureSystolic Heart FailureDiastolic Heart Failure
Stroke VolumeLowLow
Cardiac OutputLowLow
Ejection FractionLowNormal
CardiomegalyPresentAbsent
![[Heart Failure-20240820093912766.webp567]]