Correct Answer: A

Rationale: Phenobarbital has a long half-life of 4 days, meaning it remains at therapeutic levels in the body for an extended period. Due to this prolonged duration of action, the nurse should expect to administer phenobarbital once a day to maintain therapeutic levels and effectiveness. Administering it more than once a day would lead to unnecessary dosing and potential adverse effects as the medication remains active in the body for an extended period.

Correct Answer: C

Rationale: The correct instruction that the nurse should include when providing discharge instructions for a client with a Fentanyl transdermal patch is to avoid exposure to heat sources. Heat can increase the absorption of the medication, leading to a risk of overdose. Choice A is incorrect because the patch should be applied to a clean, non-hairy area. Choice B is incorrect as the Fentanyl patch is usually changed every 72 hours, not every 24 hours. Choice D is incorrect as the patch should never be cut to adjust the dosage.

Correct Answer: A

Rationale: The correct answer is A. Terbutaline works by blocking beta2-adrenergic receptors, leading to uterine smooth muscle relaxation and stopping contractions. Therefore, the client demonstrating understanding by recognizing that the medication will stop contractions is the most accurate response. Choices B, C, and D are incorrect because Terbutaline is primarily used to inhibit contractions in preterm labor, not prevent vaginal bleeding, promote blood flow to the baby, or increase prostaglandin production.

Correct Answer: A

Rationale: The correct answer is to instruct the client to avoid taking aspirin while on Clopidogrel. Clopidogrel is an antiplatelet medication that can increase the risk of bleeding. Aspirin and other NSAIDs can further potentiate this risk, so they should be avoided while taking Clopidogrel to reduce the chance of bleeding complications. Choices B, C, and D are incorrect. There is no specific instruction to take Clopidogrel with food or at bedtime. Avoiding foods high in potassium is not directly related to Clopidogrel use.

Correct Answer: D

Rationale: The nurse should prioritize assessing the client's respiratory rate first when administering Morphine due to the risk of respiratory depression, which is a life-threatening adverse effect of this medication. Monitoring the respiratory rate is crucial to detect any signs of respiratory distress early and take prompt action to ensure the client's safety. Assessing urine output, bowel sounds, and pain level are also important but not as critical as monitoring respiratory rate when initiating Morphine therapy.