ATI RN
ATI Pharmacology Exam 2 Questions
Extract:
Question 1 of 5
The nurse administers a drug to a patient whose heart rate is bradycardic aimed at increasing heart rate and myocardial activity. What adrenergic receptor is this drug stimulating?
Correct Answer: A
Rationale: The correct answer is A: Beta 1. This is because Beta 1 adrenergic receptors are primarily located in the heart, and when stimulated, they increase heart rate and myocardial activity. Beta 2 receptors are mainly found in the lungs and blood vessels, not directly impacting heart rate. Alpha 2 receptors inhibit norepinephrine release, causing a decrease in heart rate. Alpha 1 receptors are located in blood vessels, causing vasoconstriction, not directly affecting heart rate.
Therefore, the drug aiming to increase heart rate would target Beta 1 receptors in the heart.
Question 2 of 5
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Question 3 of 5
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Question 4 of 5
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Question 5 of 5
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