Architecture of the Circulation, Dr. D. Penney

Windkessel Effect (hydraulic filtering)

  • Ernst Weber (1834) - explained similarity between distensible arteries and Windkessels (= wind + kettle) of fire engines then in use (Arends - Fox of this century)

  • With perfect hydraulic filtering, Work done by a discontinuous pump on a fluid is the same as that done by a continuous pump.

    (actual: +35% for RV, +10% for LV)

    What the Windkessel Effect Accomplishes:

  • Decreases pulse pressure
  • Increases efficiency of pumping
  • Provides more continuous flow

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