ATI Pharmacology Proctored Exam

Correct Answer: A

Rationale: Phenobarbital, with a long half-life of 4 days, remains at therapeutic levels in the body for an extended period. Due to this prolonged duration of action, the nurse should administer phenobarbital once a day to maintain a consistent therapeutic effect without the need for multiple daily doses. Administering the medication more than once a day would not be necessary and could increase the risk of side effects or toxicity. Therefore, the correct answer is to administer phenobarbital once a day.

Correct Answer: A

Rationale: When educating a client about taking Hydrochlorothiazide, the nurse should advise taking the medication with food or after meals to prevent gastrointestinal upset. This medication is a diuretic, so it is important to maintain adequate fluid intake throughout the day to prevent dehydration. Taking it at bedtime is not necessary, and increased swelling of the ankles is not an expected side effect of this medication. Limiting fluid intake in the morning is not necessary and could lead to dehydration, which is a potential side effect of this diuretic.

Correct Answer: A

Rationale: The correct instruction for a client prescribed Clopidogrel is to avoid taking aspirin while on this medication. Clopidogrel is an antiplatelet medication that can increase the risk of bleeding. Aspirin and other NSAIDs can potentiate the risk of bleeding, so they should be avoided while taking Clopidogrel to prevent adverse effects. Choices B, C, and D are incorrect because Clopidogrel does not need to be taken with food, there is no specific dietary restriction related to potassium, and the timing of administration (bedtime) is not a critical instruction for this medication.

Correct Answer: A

Rationale: Tamoxifen is contraindicated in clients with a history of thromboembolic events, such as deep-vein thrombosis, due to the increased risk of blood clots. The estrogenic effects of tamoxifen can further increase the risk of thromboembolic events, making it unsafe for individuals with a history of deep-vein thrombosis. Choice B (migraine headaches), Choice C (hypertension), and Choice D (anemia) are not contraindications for tamoxifen therapy. Migraine headaches, hypertension, and anemia do not pose the same risk of adverse effects related to blood clot formation as deep-vein thrombosis does.

Correct Answer: C

Rationale: The correct answer is C: Cough. Lisinopril, an ACE inhibitor, commonly causes a persistent dry cough as an adverse effect. Clients should be informed to monitor for this side effect and report it to their healthcare provider if it occurs. Choices A, B, and D are incorrect because tinnitus, diarrhea, and weight gain are not commonly associated with Lisinopril therapy.