A patient taking a monoamine oxidase inhibitor reports that he forgot he wasn’t supposed to take over-the-counter drugs without prior approval and took some medication for his cold 6 hours ago. His wife, a nurse’s aide, checked and reports that his blood pressure is 128/84, slightly above his usual blood pressure. He has not noticed any other changes or symptoms. Which of the following responses by the nurse would be most appropriate? (Select the one that does not apply.)

Correct Answer: B

Rationale: The most appropriate response is B because the patient is taking a monoamine oxidase inhibitor, which can interact dangerously with cold medications containing ingredients like pseudoephedrine. Going to the emergency room is a precautionary measure to ensure the patient's safety due to the potential risk of a hypertensive crisis. Response A is incorrect because even a single dose can be dangerous in this scenario. Response C is incorrect as waiting for symptoms to appear before seeking help can delay necessary treatment. Response D is also incorrect as waiting for the blood pressure to reach a specific level can be risky in this situation. Going to the ER promptly is the safest course of action.

Correct Answer: A

Rationale: The correct answer is A: H1 receptors. Blocking H1 receptors can lead to weight gain by increasing appetite and reducing energy expenditure. Histamine receptors play a role in regulating appetite and metabolism. Choices B, C, and D are incorrect. Blocking 5-HT2 receptors may cause weight loss, GABA receptors are not directly involved in weight regulation, and acetylcholine receptors do not significantly impact weight gain.

Correct Answer: C

Rationale: The correct answer is C because it provides a clear and accurate explanation of what a PET scan actually does. It states that PET scans involve an injected substance that shows areas of high brain activity, not electrical activity. This response clarifies the misunderstanding and educates the patient on how PET scans work. Choice A is incorrect because it only compares PET scans to electroconvulsive therapy without addressing the patient's specific concern about electrical jolts. Choice B is incorrect as it only distinguishes between PET scans and electroconvulsive therapy without addressing the patient's misconception about brain activity and electrical jolts. Choice D is incorrect because it inaccurately describes PET scans as showing electrical activity in the form of light bands, which is not how PET scans work. It is essential to provide accurate information to address the patient's concerns effectively.

Correct Answer: C

Rationale: The correct answer is C: neostigmine (Prostigmin). Neostigmine is a cholinesterase inhibitor that helps reverse the effects of succinylcholine by increasing acetylcholine levels at the neuromuscular junction. This leads to the competitive inhibition of succinylcholine, allowing the patient to regain muscle function. Valium (A) is a benzodiazepine used for anxiety and muscle relaxation, not for reversing paralysis. Caffeine (B) is a stimulant that does not reverse muscle paralysis. Vecuronium (D) is a non-depolarizing neuromuscular blocking agent and cannot reverse succinylcholine paralysis.

Correct Answer: B

Rationale: The correct answer is B (130/88 mm Hg) because according to JNC 7 guidelines, prehypertension is defined as systolic blood pressure between 120-139 mm Hg and/or diastolic blood pressure between 80-89 mm Hg. Choice A (118/76 mm Hg) falls within the normal range. Choices C (150/90 mm Hg) and D (160/104 mm Hg) both fall within the hypertension range, not prehypertension.