HESI RN
HESI Fundamentals Practice Test
1. A client with chronic renal failure is receiving epoetin alfa (Epogen). Which laboratory test should the nurse monitor to evaluate the effectiveness of this medication?
- A. White blood cell count.
- B. Hemoglobin and hematocrit.
- C. Platelet count.
- D. Blood urea nitrogen (BUN) and creatinine.
Correct answer: B
Rationale: The correct answer is B: Hemoglobin and hematocrit. These are the primary laboratory tests to monitor the effectiveness of epoetin alfa (Epogen) in treating anemia. White blood cell count (A), platelet count (C), and blood urea nitrogen (BUN) and creatinine (D) are not directly related to the effects of this medication. Epoetin alfa stimulates the production of red blood cells, so monitoring hemoglobin and hematocrit levels helps assess the response to the treatment.
2. A hospitalized male client is receiving nasogastric tube feedings via a small-bore tube and a continuous pump infusion. He reports that he had a bad bout of severe coughing a few minutes ago but feels fine now. What action is best for the nurse to take?
- A. Record the coughing incident. No further action is required at this time.
- B. Stop the feeding, explain to the family why it is being stopped, and notify the healthcare provider.
- C. After clearing the tube with 30 ml of air, check the pH of fluid withdrawn from the tube.
- D. Inject 30 ml of air into the tube while auscultating the epigastrium for gurgling.
Correct answer: C
Rationale: Coughing, vomiting, and suctioning can precipitate displacement of the tip of the small-bore feeding tube upward into the esophagus, placing the client at increased risk for aspiration. Checking the sample of fluid withdrawn from the tube (after clearing the tube with 30 ml of air) for acidic (stomach) or alkaline (intestine) values is a more sensitive method for these tubes. The nurse should assess tube placement in this way before taking any other action to ensure the tube is still in the correct position and prevent potential complications. Choice A is incorrect because further assessment is needed due to the risk of tube displacement. Choice B is incorrect as stopping the feeding and involving the family is premature without confirming tube placement. Choice D is incorrect as injecting air and auscultating for gurgling is not the recommended method to confirm tube placement.
3. A client is admitted with a diagnosis of diabetic ketoacidosis (DKA). Which assessment finding should the nurse anticipate?
- A. Oliguria.
- B. Kussmaul respirations.
- C. Fruity odor on the breath.
- D. Blood glucose level of 250 mg/dL.
Correct answer: B
Rationale: Kussmaul respirations (B) are a deep and labored breathing pattern associated with diabetic ketoacidosis (DKA) and are expected in this condition. While oliguria (A), fruity odor on the breath (C), and elevated blood glucose level (D) are also signs of DKA, Kussmaul respirations are more specific and critical to the condition, indicating severe metabolic acidosis.
4. A client is admitted to the hospital with a diagnosis of pneumonia. Which laboratory test result should the nurse monitor to evaluate the client’s respiratory function?
- A. Arterial blood gases (ABGs)
- B. Complete blood count (CBC)
- C. Blood glucose levels
- D. Serum electrolyte levels
Correct answer: A
Rationale: Arterial blood gases (ABGs) are the most appropriate laboratory test to monitor respiratory function in a client with pneumonia. ABGs provide valuable information on oxygenation status, acid-base balance, and how well the lungs are exchanging gases. This information helps in assessing the effectiveness of ventilation and oxygenation, guiding treatment decisions, and evaluating the overall respiratory status of the client.
5. What intervention should the healthcare provider include in the plan of care for a client receiving treatment with an Unna's paste boot for leg ulcers due to chronic venous insufficiency?
- A. Check capillary refill of toes on the lower extremity with the Unna's paste boot.
- B. Apply dressing to the wound area before applying the Unna's paste boot.
- C. Wrap the leg from the knee down towards the foot.
- D. Remove the Unna's paste boot every 8 hours to assess wound healing.
Correct answer: A
Rationale: When an Unna's paste boot is applied for leg ulcers due to chronic venous insufficiency, it is crucial to check the capillary refill of the toes on the lower extremity to ensure adequate circulation. The Unna's paste boot can become rigid after drying, potentially affecting circulation distally. Monitoring capillary refill helps assess the perfusion status of the distal extremity and ensures that the treatment is not compromising circulation to the toes.
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