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Biology  /  Bio 3159  ·  Atom · ~20 seconds

V/Q Mismatch Mechanism

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Ventilation-perfusion, or V/Q, mismatch occurs when airflow and blood flow to the same lung region fall out of proportion, reducing that region's exchange efficiency.

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A region with blood flow but little airflow cannot oxygenate that blood effectively.

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A mismatch can run either direction — too little airflow for the blood, or too little blood for the airflow.