Which agent is a non-selective beta-adrenergic agonist?

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Prepare for the INBDE Pharmacology Test with flashcards and multiple-choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

Which agent is a non-selective beta-adrenergic agonist?

Explanation:
Non-selective beta-adrenergic agonists activate both beta-1 and beta-2 receptors, so they affect the heart (increasing rate and contractility) and the lungs (causing bronchodilation) simultaneously. This lack of receptor selectivity is the defining feature, distinguishing them from agents that are alpha-selective, beta-2 selective, or mixed alpha/beta. The term that fits this profile is the one described as a Non-Selective Beta Agonist, with isoproterenol being a classic example.

Non-selective beta-adrenergic agonists activate both beta-1 and beta-2 receptors, so they affect the heart (increasing rate and contractility) and the lungs (causing bronchodilation) simultaneously. This lack of receptor selectivity is the defining feature, distinguishing them from agents that are alpha-selective, beta-2 selective, or mixed alpha/beta. The term that fits this profile is the one described as a Non-Selective Beta Agonist, with isoproterenol being a classic example.

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