HESI LPN
Pharmacology HESI 2023
1. A client is prescribed phenytoin for the management of seizures. What instruction should the practical nurse provide to the client regarding this medication?
- A. Take the medication at the same time every day.
- B. Discontinue the medication if a rash develops.
- C. Avoid consuming dairy products.
- D. Monitor blood pressure regularly.
Correct answer: A
Rationale: The correct instruction the practical nurse should provide to the client regarding phenytoin is to take the medication at the same time every day. This consistency helps maintain a steady level of the medication in the bloodstream, which is crucial for effectively managing seizures. It is important for clients to adhere to their prescribed dosing schedule to optimize the therapeutic benefits of phenytoin. Choices B, C, and D are incorrect because discontinuing the medication without healthcare provider guidance can be dangerous, there is no specific interaction between phenytoin and dairy products, and monitoring blood pressure is not a primary concern with phenytoin therapy for seizures.
2. A 6-month-old infant is prescribed digoxin for the treatment of congestive heart failure. Which observation by the practical nurse (PN) warrants immediate intervention for signs of digoxin toxicity?
- A. Apical heart rate of 60 beats/min
- B. Sweating across the forehead
- C. Poor sucking effort
- D. Respiratory rate of 30 breaths/min
Correct answer: A
Rationale: A heart rate of 60 beats/min for a 6-month-old infant warrants immediate intervention as it falls below the normal range. The normal heart rate for a 6-month-old is 80 to 150 beats/min when awake, and a rate of 70 beats/min while sleeping is considered within normal limits. Bradycardia (heart rate <60 beats/min) in infants can be a sign of digoxin toxicity, necessitating prompt evaluation and intervention to prevent adverse effects. Sweating across the forehead (Choice B) is a non-specific symptom and may not directly indicate digoxin toxicity. Poor sucking effort (Choice C) and a respiratory rate of 30 breaths/min (Choice D) are not typically associated with digoxin toxicity and do not require immediate intervention in the context of this question.
3. A client with diabetes mellitus type 1 is prescribed insulin lispro. When should the nurse instruct the client to administer this medication?
- A. 5-10 minutes before meals
- B. 15 minutes after meals
- C. 30 minutes before meals
- D. 1 hour after meals
Correct answer: A
Rationale: Corrected Rationale: Insulin lispro is a rapid-acting insulin that should be administered 5-10 minutes before meals. This timing helps synchronize the peak action of insulin with the rise in blood glucose levels after eating, effectively managing postprandial hyperglycemia. Choice B, administering 15 minutes after meals, is incorrect because rapid-acting insulins like lispro are meant to act quickly to cover the rise in blood glucose levels after meals. Choices C and D are also incorrect as they do not align with the rapid onset of action required to manage postprandial hyperglycemia in patients with diabetes mellitus type 1.
4. A client with a diagnosis of bipolar disorder is prescribed oxcarbazepine. The nurse should monitor for which potential adverse effect?
- A. Hyponatremia
- B. Agranulocytosis
- C. Liver toxicity
- D. Weight gain
Correct answer: A
Rationale: The correct answer is A, Hyponatremia. Oxcarbazepine, an anticonvulsant used in bipolar disorder, can lead to hyponatremia. This is because it can cause the body to retain water, leading to a dilution of sodium levels in the blood. Monitoring sodium levels is crucial to prevent complications such as confusion, seizures, and even coma. Choices B, C, and D are incorrect. Agranulocytosis is not typically associated with oxcarbazepine use. Liver toxicity is a potential adverse effect of some medications but not commonly seen with oxcarbazepine. While weight gain can be a side effect of certain medications used in bipolar disorder treatment, it is not a common adverse effect of oxcarbazepine.
5. A client with heart failure develops hyperaldosteronism. What dietary recommendation is essential for managing this condition?
- A. Limit intake of high potassium foods
- B. Replace salt with salt substitute
- C. Monitor skin for excessive bruising
- D. Cover your skin before going outside
Correct answer: A
Rationale: Hyperaldosteronism can lead to increased potassium retention, which can be problematic for individuals with heart failure. Limiting intake of high potassium foods is crucial to prevent hyperkalemia, a condition that can worsen heart failure. Therefore, advising the client to limit high potassium foods is essential in managing hyperaldosteronism in the setting of heart failure.
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