V/Q Ratio

measurement: V is the flow rate of air into hte alveoli, measured in L/min or volume per unit time.

Q is the flowrate of blood through the pulmonary circulation, in the same units as V.

V/Q is thus a unitless ratio. The value for this in a normal individual is approximately 1.

Tests & Measurements of the V/Q Ratio

Regional V/Q mismatiches

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