HESI RN
HESI RN Medical Surgical Practice Exam
1. A CD4+ lymphocyte count is performed on a client infected with HIV. The results of the test indicate a CD4+ count of 450 cells/L. The nurse interprets this test result as indicating:
- A. Improvement in the client
- B. The need for antiretroviral therapy
- C. The need to discontinue antiretroviral therapy
- D. An effective response to the treatment for HIV
Correct answer: B
Rationale: A CD4+ count of 450 cells/L is below the normal range (500-1600 cells/mcL), indicating a decline in immune function in the client. Antiretroviral therapy is recommended when the CD4+ count falls below 500 cells/mcL or below 25%, or when the client displays symptoms of HIV. Therefore, the interpretation of this test result suggests that the client requires antiretroviral therapy to manage the HIV infection. Choices A, C, and D are incorrect because a CD4+ count of 450 cells/L does not signify improvement, discontinuation of therapy, or an effective response to treatment for HIV.
2. When a patient starts taking amoxicillin, which foods should the nurse instruct the patient to avoid?
- A. Green leafy vegetables
- B. Beef and other red meat
- C. Coffee, tea, and colas
- D. Acidic fruits and juices
Correct answer: D
Rationale: The correct answer is D: Acidic fruits and juices. Amoxicillin can be irritating to the stomach, so avoiding acidic fruits and juices is recommended to reduce stomach discomfort or potential interactions. Green leafy vegetables (Choice A), beef and other red meat (Choice B), and coffee, tea, and colas (Choice C) are not typically contraindicated with amoxicillin. It is important to focus on acidic foods and beverages to promote comfort and effectiveness of the medication.
3. A female patient will receive doxycycline to treat a sexually transmitted infection (STI). What information will the nurse include when teaching this patient about this medication?
- A. Nausea and vomiting are uncommon adverse effects.
- B. The drug may cause possible teratogenic effects.
- C. Increase intake of dairy products with each dose of this medication.
- D. Use a backup method of contraception if taking oral contraceptives.
Correct answer: D
Rationale: The correct answer is D. The desired action of oral contraceptives can be reduced when taken with tetracyclines like doxycycline. Therefore, patients on oral contraceptives should be advised to use a backup contraception method while taking doxycycline. Choice A is incorrect because nausea and vomiting are common adverse effects of doxycycline. Choice B is incorrect because doxycycline is not known for causing teratogenic effects. Choice C is incorrect because dairy products can interfere with the absorption of doxycycline, so they should be avoided when taking this medication.
4. An adult client who received partial thickness burns on 40% of the body in a house fire is admitted to the inpatient burn unit. Which fluid should the nurse prepare to administer during the client's burn recovery?
- A. 5% dextrose in water
- B. 5% dextrose in 0.25 normal saline
- C. Total parenteral nutrition
- D. Lactated Ringer's
Correct answer: D
Rationale: During the burn recovery phase, the nurse should prepare to administer Lactated Ringer's solution. Lactated Ringer's is the preferred fluid choice for burn patients as it helps replace lost fluids and electrolytes, maintain perfusion, and support organ function. Option A, 5% dextrose in water, is not the appropriate choice for fluid resuscitation in burn patients. Option B, 5% dextrose in 0.25 normal saline, does not provide the necessary electrolytes needed for burn recovery. Option C, Total parenteral nutrition, may be considered later in the treatment but is not the initial fluid of choice for burn recovery.
5. A client with chronic renal failure is being treated with sodium polystyrene sulfonate (Kayexalate). The nurse should monitor the client for which of the following?
- A. Hyponatremia.
- B. Hypokalemia.
- C. Hyperkalemia.
- D. Hypocalcemia.
Correct answer: C
Rationale: The correct answer is C: Hyperkalemia. Sodium polystyrene sulfonate (Kayexalate) is used to treat high potassium levels (hyperkalemia) by exchanging sodium ions for potassium ions in the large intestine, which is then eliminated through the feces. Therefore, the nurse should monitor the client for changes in potassium levels to ensure the effectiveness of the treatment. Choices A, B, and D are incorrect because sodium polystyrene sulfonate (Kayexalate) is not associated with causing hyponatremia, hypokalemia, or hypocalcemia.
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