HESI LPN
HESI Practice Test Pharmacology
1. A client has a prescription for heparin 1,000 units IV STAT. Several pre-filled syringes of low molecular weight heparin are available in the client's medication drawer. Which action should the nurse implement?
- A. Dilute the available heparin in 250ml of normal saline solution prior to IV administration
- B. Advise the pharmacy on the need to deliver a vial of heparin to the nursing unit immediately
- C. Calculate and administer the equivalent dose of the available low molecular weight heparin
- D. Request a prescription to change the route of administration and use the available heparin
Correct answer: B
Rationale: In this scenario, the nurse should contact the pharmacy to obtain the correct heparin formulation as the prescription calls for heparin 1,000 units IV STAT. Low molecular weight heparin is not the same as unfractionated heparin, and therefore, the nurse should not administer the available low molecular weight heparin without first obtaining the correct medication. Diluting the available heparin, calculating an equivalent dose, or changing the route of administration would not address the discrepancy between the prescribed heparin and the available low molecular weight heparin.
2. A client with a history of atrial fibrillation is prescribed digoxin. The nurse should monitor for which sign of digoxin toxicity?
- A. Bradycardia
- B. Tachycardia
- C. Nausea
- D. Vomiting
Correct answer: A
Rationale: Bradycardia is a common sign of digoxin toxicity. Digoxin, a medication used to treat atrial fibrillation, can lead to toxicity manifesting as various cardiac dysrhythmias, with bradycardia being a notable indicator. Monitoring for bradycardia is crucial as it can indicate the need for dosage adjustment or discontinuation of digoxin to prevent adverse effects. Tachycardia, nausea, and vomiting are not typically associated with digoxin toxicity, making them incorrect choices for monitoring in a client receiving this medication.
3. What instruction should the nurse include in the teaching plan for a client prescribed etanercept for rheumatoid arthritis?
- A. Rotate injection sites to prevent irritation.
- B. Take this medication with food to reduce gastrointestinal upset.
- C. Avoid sunlight exposure while on this medication.
- D. Notify the healthcare provider of any signs of infection.
Correct answer: A
Rationale: The correct instruction for a client prescribed etanercept is to rotate injection sites to prevent irritation and ensure proper absorption. Changing sites will help prevent skin irritation and ensure that the medication is absorbed effectively. This practice also reduces the risk of injection site reactions and discomfort. It is essential to follow this instruction to promote optimal medication delivery and minimize adverse effects. Choice B is incorrect because etanercept can be taken with or without food, and it is not specifically indicated to be taken with food to reduce gastrointestinal upset. Choice C is incorrect as there is no specific association between etanercept and sunlight exposure. Choice D is incorrect because while it is important to notify the healthcare provider of signs of infection, this is not the primary instruction related to the administration of etanercept.
4. How does omeprazole work in treating a peptic ulcer?
- A. Increasing the production of gastric acid
- B. Neutralizing stomach acid
- C. Coating the stomach lining
- D. Reducing gastric acid secretion
Correct answer: D
Rationale: Omeprazole is a proton pump inhibitor that works by reducing gastric acid secretion. By inhibiting the enzyme responsible for pumping acid into the stomach, omeprazole helps decrease the acidity level in the stomach, providing relief from peptic ulcers. Option A is incorrect because omeprazole does not increase gastric acid production; instead, it decreases it. Option B is incorrect as omeprazole does not neutralize existing stomach acid but rather reduces its secretion. Option C is incorrect as omeprazole does not coat the stomach lining but acts on reducing acid secretion.
5. A client with chronic pain is prescribed oxycodone. What instruction should the practical nurse (PN) include in the client's teaching plan?
- A. Take the medication with meals to avoid gastrointestinal upset.
- B. Avoid taking the medication with alcohol.
- C. Increase fluid intake to avoid constipation.
- D. Report any signs of respiratory depression to the healthcare provider.
Correct answer: B
Rationale: The correct answer is to instruct the client to avoid taking oxycodone with alcohol. Mixing oxycodone with alcohol can lead to serious side effects, including respiratory depression. Taking the medication with meals may not always be necessary, and instructions about fluid intake to avoid constipation are important but not the priority when considering the immediate risks associated with oxycodone. While reporting signs of respiratory depression is crucial, preventing it by avoiding alcohol is key in the client's safety.
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