HESI RN
HESI Pharmacology Practice Exam
1. The client has a new prescription for metoclopramide (Reglan). On review of the chart, the nurse identifies that this medication can be safely administered with which condition?
- A. Intestinal obstruction
- B. Peptic ulcer with melena
- C. Diverticulitis with perforation
- D. Vomiting following cancer chemotherapy
Correct answer: D
Rationale: Metoclopramide, also known as Reglan, is commonly used to manage vomiting following cancer chemotherapy. It acts as a gastrointestinal stimulant and antiemetic, aiding in relieving nausea and vomiting associated with chemotherapy. Metoclopramide should be avoided in conditions like intestinal obstruction, peptic ulcer with melena, and diverticulitis with perforation due to its prokinetic properties that can worsen these conditions. Therefore, the correct answer is D: Vomiting following cancer chemotherapy.
2. A client is being educated about the use of levodopa-carbidopa (Sinemet) for Parkinson's disease. Which statement by the client indicates a need for further teaching?
- A. I should avoid taking the medication with a high-protein meal.
- B. I may experience dizziness when getting up quickly.
- C. I might notice a darkening of my urine.
- D. I should report any uncontrolled movements to my healthcare provider.
Correct answer: A
Rationale: The correct answer is A. Levodopa-carbidopa (Sinemet) should not be taken with a high-protein meal as protein can interfere with the absorption of the medication. It is recommended to take it on an empty stomach or with a light meal. Choices B, C, and D are accurate statements regarding potential side effects and actions to take while on levodopa-carbidopa therapy, indicating a good understanding by the client.
3. Tamoxifen is prescribed for the client with metastatic breast carcinoma. The nurse understands that the primary action of this medication is to:
- A. Increase DNA and RNA synthesis.
- B. Promote the biosynthesis of nucleic acids.
- C. Increase estrogen concentration and estrogen response.
- D. Compete with estradiol for binding to estrogen in tissues containing high concentrations of receptors.
Correct answer: D
Rationale: The primary action of tamoxifen, an antineoplastic medication used in metastatic breast carcinoma, is to compete with estradiol for binding to estrogen receptors in tissues with high receptor concentrations. By doing so, tamoxifen reduces DNA synthesis and estrogen response, leading to its therapeutic effect in inhibiting the growth of estrogen-sensitive breast cancer cells.
4. Sildenafil (Viagra) is prescribed to treat a client with erectile dysfunction. A nurse reviews the client's medical record and would question the prescription if which of the following is noted in the client's history?
- A. Neuralgia
- B. Insomnia
- C. Use of nitroglycerin
- D. Use of multivitamins
Correct answer: C
Rationale: The correct answer is C. Sildenafil (Viagra) enhances the vasodilating effect of nitric oxide and is contraindicated with the concurrent use of organic nitrates and nitroglycerin. Using nitroglycerin together with Viagra can lead to severe hypotension and cardiovascular collapse, making it unsafe to combine both medications.
5. A client has a prescription to take guaifenesin (Humibid) every 4 hours, as needed. The nurse determines that the client understands the most effective use of this medication if the client states that he or she will:
- A. Watch for irritability as a side effect.
- B. Take the tablet with a full glass of water.
- C. Take an extra dose if the cough is accompanied by fever.
- D. Crush the sustained-release tablet if immediate relief is needed.
Correct answer: B
Rationale: Guaifenesin is an expectorant used to help loosen mucus and make coughs more productive. Taking it with a full glass of water helps decrease the viscosity of secretions, making it easier to expel mucus from the respiratory tract. It is important not to crush sustained-release tablets, as this can alter the intended release of the medication and lead to potential adverse effects.
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