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. A client is prescribed cyclobenzaprine for muscle spasms. The nurse should instruct the client to avoid which substance while taking this medication?
- A. Alcohol
- B. Caffeine
- C. Nicotine
- D. Dairy products
Correct answer: A
Rationale: The correct answer is A: Alcohol. When taking cyclobenzaprine, it is important to avoid alcohol as it can potentiate the central nervous system depressant effects of the medication. This interaction can lead to increased drowsiness, dizziness, and impaired coordination. Therefore, it is essential for the client to refrain from alcohol consumption while on cyclobenzaprine to prevent these adverse effects and ensure their safety. Choices B, C, and D are incorrect because caffeine, nicotine, and dairy products do not have significant interactions with cyclobenzaprine. While caffeine and nicotine may have stimulant effects that could theoretically counteract some of the sedative effects of cyclobenzaprine, they are not contraindicated. Dairy products, on the other hand, do not interact with cyclobenzaprine and can be consumed safely.
3. A client with epilepsy is prescribed lamotrigine. The nurse should monitor for which potential side effect?
- A. Drowsiness
- B. Nausea and vomiting
- C. Skin rash
- D. Dizziness
Correct answer: C
Rationale: When a client is prescribed lamotrigine, the nurse should closely monitor for the potential side effect of skin rash. Lamotrigine is known to cause skin rashes, which can be mild or severe, indicating a serious adverse reaction like Stevens-Johnson syndrome. Monitoring for skin rash is crucial to detect any signs of severe allergic reactions early and prevent further complications. Choices A, B, and D are incorrect as drowsiness, nausea and vomiting, and dizziness are not typically associated with lamotrigine use. While dizziness can be a side effect of some antiepileptic medications, it is not a common side effect of lamotrigine.
4. Twenty-four hours after starting to take oral penicillin for strep throat, a client calls the nurse to report the onset of a rash on the chest. What action should the nurse implement?
- A. Instruct the client to discontinue the penicillin immediately
- B. Instruct the client regarding the use of topical analgesic cream PRN
- C. Question the client about any other related symptoms
- D. Reinforce the need to take all doses of the penicillin
Correct answer: A
Rationale: In this scenario, the client has developed a rash after starting oral penicillin, which can indicate an allergic reaction. It is crucial for the nurse to instruct the client to discontinue the penicillin immediately. Continuing the medication can potentially lead to severe allergic reactions. Instructing about topical analgesic cream or questioning about other related symptoms may delay appropriate action in case of a severe allergic reaction. Reinforcing the need to complete all doses is not appropriate when an allergic reaction is suspected, as safety takes precedence over completing the antibiotic course.
5. The nurse is caring for a patient with short-term persistent diarrhea. Which class of medication would the nurse anticipate giving?
- A. Lubricants
- B. Probiotics
- C. Adsorbents
- D. Anticholinergics
Correct answer: B
Rationale: Probiotics are the correct choice in this scenario as they help restore normal gut flora, which can be effective in treating diarrhea by promoting a healthy balance of bacteria in the intestines. Lubricants are used to ease bowel movements and are not indicated for treating diarrhea. Adsorbents work by binding to toxins in the gut, which is not the primary mechanism needed for treating diarrhea. Anticholinergics are more commonly used for conditions like overactive bladder and not for short-term persistent diarrhea.
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