Airway Resistance - Definition

Definition

Analogously, to Ohm's Law:

Where:

So:

Where:

  • = Airway Resistance
  • = Pressure Difference driving airflow
  • = Atmospheric Pressure
  • = Alveolar Pressure
  • = Volumetric Airflow (not minute ventilation which confusingly maybe represented by the same symbol)

N.B. PA and change constantly during the respiratory cycle.

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