HESI RN
HESI Pharmacology Practice Exam
1. The camp nurse asks the children preparing to swim in the lake if they have applied sunscreen. The nurse reminds the children that chemical sunscreens are most effective when applied:
- A. Immediately before swimming
- B. 15 minutes before exposure to the sun
- C. Immediately before exposure to the sun
- D. At least 30 minutes before exposure to the sun
Correct answer: D
Rationale: Chemical sunscreens are most effective when applied at least 30 minutes before exposure to the sun to allow them to penetrate the skin and provide optimal protection. Applying sunscreen immediately before swimming (Choice A) or immediately before exposure to the sun (Choice C) may not provide sufficient time for the sunscreen to be absorbed and offer proper protection. Applying sunscreen 15 minutes before sun exposure (Choice B) is also not ideal as it may not allow enough time for the sunscreen to work effectively. Therefore, the correct answer is to apply chemical sunscreen at least 30 minutes before exposure to the sun to ensure it can be absorbed and offer the intended protection. It is important to reapply sunscreen after swimming or sweating to maintain its effectiveness.
2. The nurse is completing the admission assessment of an underweight adolescent admitted to the psychiatric unit with a diagnosis of depression. Which finding requires notification to the healthcare provider?
- A. Body mass index of 21
- B. Potassium level of 2.9 mEq/dL
- C. WBC count of 10,000/mm3
- D. Blood pressure of 110/70 mmHg
Correct answer: B
Rationale: The correct answer is B. A potassium level of 2.9 mEq/dL is critically low and requires immediate notification to the healthcare provider as it indicates a potential electrolyte imbalance, which can lead to serious cardiac arrhythmias and other complications. Choices A, C, and D are within normal ranges or not indicative of immediate life-threatening issues. A body mass index of 21 may be considered normal for some individuals, a WBC count of 10,000/mm3 is slightly elevated but not an urgent concern, and a blood pressure of 110/70 mmHg is within normal limits for an adolescent.
3. What is the most effective nursing intervention to prevent atelectasis from developing in a postoperative client?
- A. Maintain adequate hydration
- B. Assist the client to turn, deep breathe, and cough
- C. Ambulate the client within 12 hours
- D. Splint the incision
Correct answer: B
Rationale: The correct answer is to assist the client to turn, deep breathe, and cough. This intervention helps to expand the lungs and prevent atelectasis in postoperative clients. Maintaining adequate hydration is important for overall health but is not the most effective intervention for preventing atelectasis. Ambulating the client within 12 hours is beneficial for preventing complications after surgery, but it may not be as directly effective in preventing atelectasis as turning, deep breathing, and coughing. Splinting the incision is important for postoperative care, but it does not specifically address the prevention of atelectasis.
4. A client is receiving sulfisoxazole. Which of the following should be included in the list of instructions?
- A. Restrict fluid intake.
- B. Maintain a high fluid intake.
- C. If the urine turns dark brown, call the healthcare provider (HCP) immediately.
- D. Decrease the dosage when symptoms are improving to prevent an allergic response.
Correct answer: B
Rationale: When a client is taking sulfisoxazole, it is important to maintain a high fluid intake. Each dose of sulfisoxazole should be taken with a full glass of water, as the medication is more soluble in alkaline urine. Restricting fluid intake is not recommended as it can lead to inadequate hydration. Dark brown urine may be a side effect of some forms of sulfisoxazole but does not necessarily warrant immediate notification of the healthcare provider unless accompanied by other concerning symptoms. Decreasing the dosage when symptoms improve is not advised as it may lead to treatment failure or the development of resistance.
5. A client with a peptic ulcer is diagnosed with a Helicobacter pylori infection. The nurse is reinforcing teaching for the client about the medications prescribed, including clarithromycin (Biaxin), esomeprazole (Nexium), and amoxicillin (Amoxil). Which statement by the client indicates the best understanding of the medication regimen?
- A. My ulcer will heal because these medications will kill the bacteria.
- B. These medications are only taken when I have pain from my ulcer.
- C. The medications will kill the bacteria and stop the acid production.
- D. These medications will coat the ulcer and decrease the acid production in my stomach.
Correct answer: C
Rationale: Triple therapy for Helicobacter pylori infection usually includes two antibacterial drugs and a proton pump inhibitor. These medications will kill the bacteria and decrease acid production.