HESI RN
HESI Pharmacology Practice Exam
1. A client with severe acne is seen in the clinic, and the healthcare provider prescribes isotretinoin. The nurse reviews the client's medication record and would contact the healthcare provider if the client is taking which medication?
- A. Vitamin A
- B. Digoxin (Lanoxin)
- C. Furosemide (Lasix)
- D. Phenytoin (Dilantin)
Correct answer: A
Rationale: Isotretinoin is a metabolite of vitamin A, which can lead to toxicity when taken together. Therefore, it is crucial to avoid concurrent use of vitamin A supplements with isotretinoin. Contacting the healthcare provider to discuss discontinuing vitamin A supplements is important to prevent potential adverse effects. Choices B, C, and D are incorrect as they are not known to interact significantly with isotretinoin.
2. A client who is receiving digoxin (Lanoxin) daily has a serum potassium level of 3.0 mEq/L and is complaining of anorexia. A healthcare provider prescribes a digoxin level to rule out digoxin toxicity. A nurse checks the results, knowing that which of the following is the therapeutic serum level (range) for digoxin?
- A. 3 to 5 ng/mL
- B. 0.5 to 2 ng/mL
- C. 1.2 to 2.8 ng/mL
- D. 3.5 to 5.5 ng/mL
Correct answer: B
Rationale: The therapeutic serum level for digoxin ranges from 0.5 to 2 ng/mL. This range is considered optimal for therapeutic effects while minimizing the risk of toxicity. Levels above 2 ng/mL may lead to digoxin toxicity, which can manifest as anorexia among other symptoms. Therefore, the nurse should be vigilant in monitoring the digoxin levels to ensure the client's safety and therapeutic effectiveness of the medication.
3. A client is receiving sulfisoxazole. Which of the following should be included in the list of instructions?
- A. Restrict fluid intake.
- B. Maintain a high fluid intake.
- C. If the urine turns dark brown, call the healthcare provider (HCP) immediately.
- D. Decrease the dosage when symptoms are improving to prevent an allergic response.
Correct answer: B
Rationale: When a client is taking sulfisoxazole, it is important to maintain a high fluid intake. Each dose of sulfisoxazole should be taken with a full glass of water, as the medication is more soluble in alkaline urine. Restricting fluid intake is not recommended as it can lead to inadequate hydration. Dark brown urine may be a side effect of some forms of sulfisoxazole but does not necessarily warrant immediate notification of the healthcare provider unless accompanied by other concerning symptoms. Decreasing the dosage when symptoms improve is not advised as it may lead to treatment failure or the development of resistance.
4. A nurse is providing instructions to an adolescent who has a history of seizures and is taking an anticonvulsant medication. Which of the following statements indicates that the client understands the instructions?
- A. I will never be able to drive a car.
- B. My anticonvulsant medication will clear up my skin.
- C. I can't drink alcohol while I am taking my medication.
- D. If I forget my morning medication, I can take two pills at bedtime.
Correct answer: C
Rationale: The correct answer is C: 'I can't drink alcohol while I am taking my medication.' Alcohol can lower the seizure threshold and should be avoided by individuals taking anticonvulsants. Choice A is incorrect because it is an extreme statement and not necessary for someone taking anticonvulsants. Choice B is incorrect as anticonvulsant medications are not used to clear skin conditions. Choice D is incorrect because doubling up medication doses can be harmful and should not be done without healthcare provider approval.
5. A client is being taught about the use of nitroglycerin (Nitrostat) for angina. Which statement by the client indicates a need for further teaching?
- A. I will sit or lie down when I take the medication.
- B. I can take up to three tablets, 5 minutes apart, if needed.
- C. I will call 911 if my chest pain is not relieved after taking three tablets.
- D. I will keep the medication in its original dark container.
Correct answer: B
Rationale: The correct administration of nitroglycerin for angina is to take up to three tablets, 5 minutes apart. If the chest pain persists after the third tablet, emergency medical services should be called. Taking more than three tablets or reducing the time interval between doses may lead to hypotension and indicates a need for further teaching.
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