Correct Answer: A

Rationale: The correct action for the nurse to take in this situation is to discontinue the oxytocin infusion. Contractions occurring every 45 seconds indicate uterine hyperstimulation, which can pose risks to both the client and the fetus. By stopping the oxytocin infusion, the nurse can help prevent further complications. Choices B, C, and D are incorrect because increasing, decreasing, or maintaining the oxytocin infusion can exacerbate the uterine hyperstimulation and increase the risks associated with it.

Correct Answer: B

Rationale: The nurse should question the prescription to apply heat to the affected extremity for 45 minutes. Heat should not be applied in the first 48 hours after an acute injury, as it can increase swelling. Cold therapy is more appropriate initially. Choices A, C, and D are appropriate actions in the care of a client with a sprained ankle. Elevating the affected extremity helps reduce swelling, wrapping it with a compression dressing provides support, and assessing sensation, movement, and pulse every 4 hours is important to monitor for complications.

Correct Answer: D

Rationale: When caring for a client with a C. difficile infection, it is essential to isolate them in a private room to prevent the spread of spores through contact with surfaces. Placing the client in a negative pressure room (Choice A) is not necessary for C. difficile. Using alcohol-based hand rub (Choice B) and wearing a face shield (Choice C) are important infection control measures but are not specific to the isolation requirements for C. difficile.

Correct Answer: D

Rationale: The correct answer is D: 'This medication helps decrease swelling and mucus production.' Montelukast is used for long-term asthma management as it helps reduce inflammation and mucus production in the airways. It is not appropriate for acute asthma attacks. Choice A is incorrect because montelukast is not a rescue medication for acute attacks. Choice B is incorrect because montelukast is not specifically taken before exercise. Choice C is incorrect because montelukast is usually taken regularly, not just for a short duration.

Correct Answer: D

Rationale: The correct answer is D. Furosemide is a diuretic that does not require a reduction in fish consumption. Therefore, the statement 'I will limit my intake of fish' indicates a misunderstanding of dietary considerations. Choices A, B, and C are all appropriate actions related to furosemide therapy. Taking pills with food or milk can help reduce stomach upset, daily weight monitoring is crucial due to the diuretic effect of furosemide, and notifying the nurse about muscle cramps is important as it can be a sign of electrolyte imbalance, a potential side effect of furosemide.