3. Physiology
        3.2. Cardiovascular
            3.2.2. Heart
                3.2.2.3. Heart pump
3.2.2.3.1. Left ventricular pressure-time curve

Left ventricular pressure-time curve

See graph 20050607

 

Phases

Systolic phases

  1. Mitral valve closes
  2. Isovolumetric contraction
  3. Aortic valve opens
  4. Isotonic contraction (rapid ejection, then reduced ejection)
  5. Protodiastole
    * Pressure falling just before aortic valve closes

Diastolic phases

  1. Aortic valve closes
  2. Isovolumetric relaxation
  3. Mitral valvle opens
  4. Rapid filling
  5. Diastasis (reduced filling)
  6. Atrial systole

Points to note

 

Other notes

LV filling

Difference in the elderly

Venous pulse

Except for the c wave, venous pulse pressure curve closely follows the atrial pressure curve

About
Created20050607
Reviewed20050815


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