HESI LPN
Practice HESI Fundamentals Exam
1. A client with chronic kidney disease is experiencing hyperkalemia. Which medication should the LPN/LVN anticipate being prescribed to lower the client's potassium level?
- A. Furosemide (Lasix)
- B. Sodium polystyrene sulfonate (Kayexalate)
- C. Calcium gluconate
- D. Albuterol (Proventil)
Correct answer: B
Rationale: The correct answer is B: Sodium polystyrene sulfonate (Kayexalate). Kayexalate is commonly used to lower potassium levels in clients with hyperkalemia by exchanging sodium ions for potassium ions in the large intestine, leading to the elimination of excess potassium from the body. Choice A, Furosemide (Lasix), is a loop diuretic that helps with fluid retention but does not directly lower potassium levels. Choice C, Calcium gluconate, is used to treat calcium deficiencies and does not impact potassium levels. Choice D, Albuterol (Proventil), is a bronchodilator used to treat respiratory conditions and does not affect potassium levels. Therefore, the LPN/LVN should anticipate the prescription of Kayexalate to address the client's hyperkalemia.
2. When using an open irrigation technique for a client's catheter, what action should the nurse take?
- A. Subtract the amount of irrigant used from the client's urine output.
- B. Add the amount of irrigant used to the urine output measurement.
- C. Measure the amount of irrigant used separately from the urine output.
- D. Document the total amount of fluid used for irrigation only.
Correct answer: A
Rationale: The correct action for the nurse to take when using an open irrigation technique for a client's catheter is to subtract the amount of irrigant used from the client's urine output. This subtraction helps accurately assess the client's output by accounting for the volume of irrigant introduced. Choice B is incorrect because adding the irrigant to the urine output measurement would falsely inflate the total output, leading to inaccurate assessment. Choice C is incorrect as measuring the amount of irrigant separately does not provide an accurate assessment of the client's total output as it disregards the irrigant's contribution. Choice D is incorrect as documenting the total fluid used for irrigation only does not differentiate between the irrigant and the client's actual urine output, which is crucial for accurate monitoring and assessment.
3. A client with type 1 diabetes mellitus is experiencing hypoglycemia. What is the best initial action for the LPN/LVN to take?
- A. Administer glucagon intramuscularly.
- B. Give the client 4 ounces of orange juice.
- C. Give the client a snack containing protein and carbohydrates.
- D. Encourage the client to rest until symptoms resolve.
Correct answer: B
Rationale: The best initial action for a client with type 1 diabetes mellitus experiencing hypoglycemia is to give them 4 ounces of orange juice. Orange juice quickly raises blood glucose levels in a hypoglycemic client. Administering glucagon intramuscularly is not the best initial action for hypoglycemia; it is usually reserved for severe hypoglycemia cases. Giving a snack containing protein and carbohydrates is not as rapid as orange juice in raising blood glucose levels during hypoglycemia. Encouraging the client to rest until symptoms resolve does not address the immediate need to raise blood glucose levels in a hypoglycemic state.
4. A client has right-sided paralysis following a cerebrovascular accident. Which of the following prescriptions should the nurse anticipate to prevent a plantar flexion contracture of the affected extremity?
- A. Ankle-foot orthotic
- B. Continuous passive motion machine
- C. Abduction splint
- D. Sequential compression device
Correct answer: A
Rationale: An ankle-foot orthotic is the correct choice to prevent a plantar flexion contracture in a paralyzed limb. An ankle-foot orthotic helps maintain proper alignment of the foot and ankle, preventing the foot from being permanently fixed in a pointed-down position. Continuous passive motion machines are typically used to promote joint movement after surgery and would not address the prevention of contractures in this case. Abduction splints are used to keep the legs apart and would not address the specific issue described. Sequential compression devices are used to prevent deep vein thrombosis by promoting circulation in the lower extremities and are not indicated for preventing plantar flexion contractures.
5. While auscultating a client's abdomen, a nurse hears a blowing sound over the aorta. The nurse should identify this sound as which of the following?
- A. Gallop
- B. Bruit
- C. Thrill
- D. Murmur
Correct answer: B
Rationale: The correct answer is B: Bruit. A bruit is a blowing sound indicating turbulent blood flow, often heard over the aorta. Choices A, C, and D are incorrect. A gallop is a cardiac sound resembling the sound of a galloping horse. A thrill is a vibration felt on palpation, and a murmur is a swooshing or whooshing sound heard during auscultation of the heart or blood vessels. In this scenario, the blowing sound over the aorta specifically indicates a bruit, which signifies turbulent blood flow and should be further assessed by the healthcare provider.
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