Equalization of diastolic pressures

Equalization of diastolic pressures

Equalization of diastolic pressures of LV and RV seen in

[A] Atrial fibrillation
[B] Mitral stenosis
[C] Aortic stenosis
[D] Constrictive pericarditis

Equalization of diastolic pressures

  • In normal hearts the diastolic pressures in ventricles vary independently and remain unaffected by the other ventricle.
  • Stiff pericardium limits the expansion of ventricles beyond a point after which it can only fill by compressing the other ventricle.
  • In addition, fixed pericardium exerts an equal contact pressure on all the chambers causing elevation and equalization of diastolic pressure.
  • Elevation and equalization of diastolic pressures (within 5 mmHg) in all cardiac chambers is the hallmark of pericardial constriction
  • This diastolic equalization is not unique to CCP but is also seen in decompensated left sided heart failure, RCMP, severe tricuspid regurgitation, and acute mitral regurgitation and RV infarction.

Equalization of diastolic pressures

Equalization of right sided and left-sided diastolic filling pressures, with characteristic dip, and plateau in right-left cardiac catheterization.
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