HESI RN
Pharmacology HESI
1. 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.
2. 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.
3. A client is prescribed warfarin (Coumadin) for atrial fibrillation. Which statement by the client indicates a need for further teaching?
- A. I will avoid foods high in vitamin K.
- B. I will take the medication at the same time each day.
- C. I will use an electric razor to shave.
- D. I will take aspirin if I have a headache.
Correct answer: D
Rationale: Clients taking warfarin (Coumadin) should avoid aspirin unless prescribed by their healthcare provider, as it can increase the risk of bleeding. The other statements are correct and do not indicate a need for further teaching. Taking aspirin along with warfarin can potentiate the anticoagulant effects of warfarin, leading to an increased risk of bleeding complications.
4. When providing instructions to a client taking ciprofloxacin (Cipro), which of the following should the nurse include in the teaching plan?
- A. Avoid taking the medication with milk or antacids.
- B. Take the medication with a multivitamin.
- C. Consume extra dairy products while taking this medication.
- D. Take the medication with food if gastrointestinal upset occurs.
Correct answer: A
Rationale: The correct answer is to avoid taking ciprofloxacin (Cipro) with milk or antacids. These can interfere with the medication's absorption. Consuming extra dairy products or taking it with a multivitamin is not recommended for the same reason. If gastrointestinal upset occurs, the medication can be taken with food to help alleviate the symptoms.
5. A client is taking levothyroxine (Synthroid). The nurse instructs the client to notify the health care provider (HCP) if which of the following occurs?
- A. Fatigue
- B. Tremors
- C. Cold intolerance
- D. Excessively dry skin
Correct answer: B
Rationale: Tremors are a sign of excessive doses of levothyroxine, indicating hyperthyroidism. It is important for the client to report tremors to the healthcare provider to prevent complications associated with overdosing on levothyroxine.
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