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This equation computes the velocity of respiratory gases based on flow rate, F, and cross-sectional area of the respiratory pathway. This flow rate assumes non-turbulent flow which could slightly affect overall velocity.
Inputs to this equation:
- F = flow, the volumetric flow of the gas
- A - cross-sectional area of the flow path
The velocity varies inversely with the cross-sectional area and thus as the total cross-sectional area increases, the velocity decreases.
