HESI LPN
HESI Fundamentals Study Guide
1. A client with a history of chronic renal failure is admitted with generalized edema. Which laboratory value should the LPN/LVN monitor to assess the client's fluid balance?
- A. Serum potassium
- B. Serum calcium
- C. Serum albumin
- D. Serum sodium
Correct answer: C
Rationale: The correct answer is C, Serum albumin. In clients with chronic renal failure and generalized edema, monitoring serum albumin levels is crucial as it is a key indicator of fluid balance. Low serum albumin levels can contribute to edema formation due to decreased oncotic pressure, indicating fluid imbalance. Serum potassium (Choice A) is more related to kidney function and electrolyte balance in renal failure patients. Serum calcium (Choice B) is important for bone health but is not directly related to fluid balance. Serum sodium (Choice D) is more indicative of hydration status and electrolyte balance but may not directly reflect fluid balance in the context of chronic renal failure and edema.
2. A client who is postoperative is being taught how to use a flow-oriented incentive spirometer. Which of the following instructions should be included by the nurse?
- A. Cough deeply after each use.
- B. Take a deep breath and hold for 10 seconds.
- C. Breathe in slowly and deeply to raise the ball or piston.
- D. Exhale forcefully before using the spirometer.
Correct answer: C
Rationale: The correct technique for using a flow-oriented incentive spirometer involves breathing in slowly and deeply to raise the ball or piston. This action helps to expand the lungs and improve lung function. Option A is incorrect as coughing deeply after each use is not part of using the spirometer. Option B is incorrect as holding the breath for 10 seconds is not the correct instruction for using the spirometer. Option D is incorrect as exhaling forcefully before using the spirometer is not the appropriate step in using this device.
3. When orienting a newly licensed nurse on taking a telephone prescription, which statement indicates understanding of the process?
- A. A second nurse enters the prescription into the client’s medical record.
- B. Another nurse should listen to the phone call.
- C. The provider can clarify the prescription when they sign the health record.
- D. I should omit the 'read back' if this is a one-time prescription.
Correct answer: A
Rationale: The correct answer is A because a second nurse should verify and enter the prescription into the client’s medical record to ensure accuracy. This step is crucial to prevent errors in transcription and administration. Choice B is incorrect as having another nurse listen to the phone call does not ensure accurate transcription. Choice C is incorrect because the provider clarifying the prescription upon signing the health record does not replace the need for proper documentation. Choice D is incorrect because the 'read back' process is essential for all telephone prescriptions to confirm accuracy and prevent errors in transcription or administration.
4. A healthcare professional is preparing to inject heparin subcutaneously for a client who is postoperative. Which of the following actions should the healthcare professional take?
- A. Use a 25-gauge needle.
- B. Select a site on the client’s abdomen.
- C. Use the Z-track technique to displace the skin on the injection site.
- D. Observe for bleb formation to confirm proper placement.
Correct answer: B
Rationale: For subcutaneous injections like heparin, a 25-27 gauge needle is recommended, making choice A incorrect. The abdomen is a commonly used site for heparin injection due to its consistent absorption and convenience, making choice B the correct answer. The Z-track technique is not necessary for subcutaneous injections, making choice C unnecessary. Observing for bleb formation is not a standard practice for confirming proper placement of subcutaneous heparin, making choice D incorrect. Therefore, the correct action is to select a site on the client's abdomen for the injection.
5. When replacing a client's surgical dressing, what should the nurse do?
- A. Don sterile gloves to remove the old dressing
- B. Wash hands thoroughly before removing the old dressing
- C. Use sterile gloves to remove the old dressing
- D. Apply a new dressing before removing the old one
Correct answer: C
Rationale: When replacing a client's surgical dressing, the nurse should use sterile gloves to remove the old dressing. Sterile technique is essential to prevent introducing infection to the wound. Choice A is incorrect because clean gloves are not sufficient; sterile gloves are necessary to maintain asepsis. Choice B, washing hands, is an important step before and after the procedure to maintain hand hygiene, but sterile gloves are required during the dressing change. Choice D is incorrect because a new dressing should only be applied after the old one has been removed to prevent contamination and ensure proper wound care.
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