HESI RN
HESI Medical Surgical Exam
1. The client with chronic renal failure is on a fluid restriction. Which of the following statements by the client indicates that the teaching has been effective?
- A. I will limit my fluid intake to prevent fluid overload.
- B. I can drink as much fluid as I want as long as I take my medication.
- C. I will skip dialysis sessions if I feel tired.
- D. I will limit my fluid intake to 1 liter per day.
Correct answer: A
Rationale: Choice A is the correct answer because it demonstrates the client's understanding of the need to limit fluid intake to prevent fluid overload, which is crucial in managing chronic renal failure. Adequate fluid restriction is essential to prevent complications such as fluid overload and electrolyte imbalances. Choice B is incorrect as it promotes excessive fluid intake, which can worsen the client's condition by putting additional stress on the kidneys. Choice C is incorrect as skipping dialysis sessions can lead to a buildup of toxins in the body, worsening renal failure and potentially leading to life-threatening complications. Choice D is incorrect because limiting fluid intake to a specific volume may not be appropriate for all clients and can vary depending on individual needs, medical condition, and healthcare provider recommendations.
2. A client with peripheral arterial disease (PAD) has cool and pale feet with diminished pulses. Which of the following interventions should the nurse implement?
- A. Keep the legs elevated above the level of the heart.
- B. Encourage the client to exercise daily.
- C. Apply warm compresses to the affected area.
- D. Apply ice packs to the affected area.
Correct answer: C
Rationale: In peripheral arterial disease (PAD), there is decreased blood flow to the extremities. Applying warm compresses helps dilate blood vessels, improve circulation, and relieve symptoms. Elevating the legs above the heart level may further compromise blood flow. Encouraging daily exercise is important in PAD management but may not be appropriate when the client has cool, pale feet with diminished pulses. Applying ice packs can worsen vasoconstriction and further reduce blood flow, exacerbating symptoms in PAD.
3. A client with chronic renal failure is receiving erythropoietin therapy. The nurse should assess the client for which of the following side effects?
- A. Hypotension.
- B. Hypertension.
- C. Hyperglycemia.
- D. Hypercalcemia.
Correct answer: B
Rationale: The correct answer is B: Hypertension. Erythropoietin therapy can lead to an increase in blood pressure, making hypertension a common side effect that the nurse should closely monitor. Hypotension (choice A) is not typically associated with erythropoietin therapy. Hyperglycemia (choice C) and hypercalcemia (choice D) are not commonly linked to erythropoietin therapy in clients with chronic renal failure, making them incorrect choices.
4. The nurse is teaching a nursing student about the minimal effective concentration (MEC) of antibiotics. Which statement by the nursing student indicates understanding of this concept?
- A. A serum drug level greater than the MEC ensures that the drug is bacteriostatic.
- B. A serum drug level greater than the MEC broadens the spectrum of the drug.
- C. A serum drug level greater than the MEC helps eradicate bacterial infections.
- D. A serum drug level greater than the MEC increases the therapeutic index.
Correct answer: C
Rationale: The MEC is the minimum amount of drug needed to halt the growth of a microorganism. A level greater than the MEC helps eradicate infections. Drugs at or above the MEC are usually bactericidal, not bacteriostatic. Therefore, choice A is incorrect. Broadening the spectrum of a drug refers to its range of activity against different microorganisms, which is not directly related to MEC. Thus, choice B is incorrect. Increasing the therapeutic index involves maximizing the effectiveness of a drug while minimizing its toxicity, which is not specifically related to MEC. Therefore, choice D is also incorrect.
5. The nurse is caring for a newly admitted patient who has severe gastroenteritis. The patient’s electrolytes reveal a serum sodium level of 140 mEq/L and a serum potassium level of 3.5 mEq/L. The nurse receives an order for intravenous 5% dextrose and normal saline with 20 mEq/L potassium chloride to infuse at 125 mL per hour. Which action is necessary prior to administering this fluid?
- A. Evaluate the patient’s urine output.
- B. Contact the provider to order arterial blood gases.
- C. Request an order for an initial potassium bolus.
- D. Suggest a diet low in sodium and potassium.
Correct answer: A
Rationale: Prior to administering IV fluids containing potassium, it is crucial to evaluate the patient's urine output. If the urine output is less than 25 mL/hr or 600 mL/day, there is a risk of potassium accumulation. Patients with low urine output should not receive IV potassium to prevent potential complications. Contacting the provider for arterial blood gases is unnecessary in this scenario as it does not directly relate to the administration of IV fluids with potassium. Administering potassium as a bolus is not recommended due to potential adverse effects. While dietary considerations are important, suggesting a low-sodium and low-potassium diet is not the immediate action required before administering IV fluids with potassium chloride.
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