Correct Answer: A

Rationale: The correct action for the nurse is to monitor the client's respiratory rate every 15 minutes while on Morphine IV to promptly detect respiratory depression, a critical adverse effect associated with this medication. Regular monitoring allows for early intervention and prevents potential respiratory complications.

Correct Answer: A

Rationale: The correct instruction for a client using a Nicotine transdermal patch is to apply the patch at the same time each day. This helps maintain consistent blood levels of nicotine throughout the treatment period, which can aid in reducing cravings for smoking. Consistency in the application time is essential for the effectiveness of the patch.

Correct Answer: A

Rationale: Warfarin is classified as an anticoagulant, which means its primary function is to prevent the formation of blood clots. By inhibiting the synthesis of certain clotting factors in the liver, warfarin reduces the blood's ability to clot, making it an important medication in preventing conditions like strokes and deep vein thrombosis.

Correct Answer: D

Rationale: Erectile dysfunction drugs are contraindicated with Nitroglycerin because they can potentiate the hypotensive effects of Nitroglycerin, leading to severe hypotension.

Correct Answer: D

Rationale: It is crucial for clients to complete the entire course of amoxicillin therapy to ensure the infection is fully treated and to prevent antibiotic resistance. Prematurely stopping the antibiotic can lead to incomplete eradication of the infection, potentially causing it to return and be more difficult to treat.