Which of the following is a beta blocker?

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Study for the Texas Medication Aide Test. Revise with flashcards and multiple choice questions, each question has hints and explanations. Prepare effectively for your certification!

Multiple Choice

Which of the following is a beta blocker?

Explanation:
Beta blockers work by blocking beta-adrenergic receptors, which lowers heart rate and the force of heart muscle contractions, reducing blood pressure. Labetalol does this and also blocks alpha-1 receptors, giving extra vasodilation to help lower pressure. The other drugs aren’t beta blockers: nifedipine is a calcium channel blocker, which relaxes blood vessels by a different mechanism; benazepril is an ACE inhibitor; irbesartan is an ARB. So, the drug that fits the beta-blocker mechanism is Labetalol.

Beta blockers work by blocking beta-adrenergic receptors, which lowers heart rate and the force of heart muscle contractions, reducing blood pressure. Labetalol does this and also blocks alpha-1 receptors, giving extra vasodilation to help lower pressure. The other drugs aren’t beta blockers: nifedipine is a calcium channel blocker, which relaxes blood vessels by a different mechanism; benazepril is an ACE inhibitor; irbesartan is an ARB. So, the drug that fits the beta-blocker mechanism is Labetalol.

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