HESI LPN
Pharmacology HESI 2023
1. 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.
2. The nurse is studying antacids that contain magnesium and calcium for the pharmacology exam. The student nurse remembers that these antacids should be used with caution in patients with which condition?
- A. Hypertension
- B. Renal failure
- C. Heart failure
- D. Peptic ulcer disease
Correct answer: B
Rationale: Magnesium and calcium can accumulate in patients with renal failure, leading to toxicity.
3. A female client who started chemotherapy three days ago for cancer of the breast calls the clinic reporting that she is so upset she cannot sleep. The client has several PRN medications available. Which drug should the nurse instruct her to take?
- A. Ondansetron 8mgPO no
- B. Lorazepam 2mg PO bedtime
- C. Oxycodone, acetylsalicylic acid one tablet q4 hours PRN
- D. Acetaminophen, diphenhydramine 2 capsules bedtime
Correct answer: D
Rationale: Acetaminophen and diphenhydramine help with sleep without severe side effects.
4. An older adult with iron deficiency anemia is being discharged with iron supplements, which information should the nurse include in the discharge?
- A. Take the tablet with a daily multivitamin
- B. Crush the tablet and mix it with pudding
- C. Bedtime is the best time to take the tablet
- D. Wait 2 hours after meals to take the tablet
Correct answer: D
Rationale: The correct answer is to wait 2 hours after meals before taking the iron tablet. This is important to ensure better absorption and efficacy of the iron supplement. Taking the tablet with a daily multivitamin (Choice A) may interfere with iron absorption due to interactions with other minerals. Crushing the tablet and mixing it with pudding (Choice B) can alter the effectiveness of the medication. While bedtime (Choice C) may be convenient, waiting after meals is crucial for optimal iron absorption.
5. A client with a history of hypertension is prescribed hydrochlorothiazide. The practical nurse should monitor the client for which potential adverse effect?
- A. Hyperkalemia
- B. Hypokalemia
- C. Hypernatremia
- D. Hyponatremia
Correct answer: B
Rationale: Corrected Rationale: Hydrochlorothiazide is a diuretic that can lead to potassium loss, resulting in hypokalemia. Monitoring for hypokalemia is essential because it can cause various complications such as cardiac dysrhythmias. Therefore, the practical nurse should closely watch for signs and symptoms of low potassium levels in clients taking hydrochlorothiazide. Incorrect Rationale for Other Choices: A. Hyperkalemia is not typically associated with hydrochlorothiazide use; instead, it is more commonly linked to medications like ACE inhibitors or potassium-sparing diuretics. C. Hypernatremia is unlikely with hydrochlorothiazide use as it tends to cause sodium loss. D. Hyponatremia is more commonly associated with conditions where there is excessive water intake or syndrome of inappropriate antidiuretic hormone secretion (SIADH), rather than with hydrochlorothiazide use.
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