Pulmonary hrombosis Bronchospasm V/Q Normal v/Qt vQ↓ Mismatching of the air supply and blood supply in individual alveoli The main effect of ventilation-perfusion inequality is to decrease the Po, of systemic arterial bloodNormal Mismatching of the air supply and blood supply in individual alveoli. The main effect of ventilation-perfusion inequality is to decrease the Po2 of systemic arterial blood