A patient with thrombocytosis (excess platelets) experiences increased risk of vascular occlusion. Why does platelet aggregation cause this heightened occlusion risk?

💡 Explanation

Platelet aggregation initiates a cascade that forms bulky clumps. Because these aggregates physically obstruct blood flow in smaller vessels, vascular occlusion risk increases; therefore, the correct answer is vessel blockage, rather than fibrinolysis, nitric oxide production, or permeability reduction.

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