Final answer:
Cocaine leads to vasoconstriction, increasing blood pressure. Non-selective beta-blockers are contraindicated for BP control in the context of cocaine use because they can worsen hypertension and vasoconstriction.
Step-by-step explanation:
Use of cocaine causes vasoconstriction, which is the narrowing of the blood vessels. When blood vessels constrict, it increases the resistance to blood flow, therebyleading to an increase in blood pressure. This effect of cocaine is contraindicated for blood pressure control because it exacerbates hypertension rather than alleviating it. As such, medications that lead to relaxation of the blood vessels, known as vasodilators, are typically used to help control high blood pressure. In scenarios of cocaine-induced hypertension, non-selective beta-blockers are contraindicated due to the risk of unopposed alpha-adrenergic receptor stimulation, ultimately leading to a further increase in blood pressure and possibly enhanced vasoconstriction.