HESI LPN
HESI PN Exit Exam 2024
1. What is the primary cause of diabetic ketoacidosis (DKA)?
- A. Insulin deficiency
- B. Overhydration
- C. Excess carbohydrate intake
- D. Excess insulin
Correct answer: A
Rationale: The correct answer is A: Insulin deficiency. Diabetic ketoacidosis occurs due to a severe lack of insulin, causing the body to break down fat for energy, leading to the production of ketones and acidification of the blood. Option B, Overhydration, is incorrect as DKA is characterized by dehydration rather than overhydration. Option C, Excess carbohydrate intake, is incorrect because while high blood sugar levels can contribute to DKA, the primary cause is insulin deficiency. Option D, Excess insulin, is also incorrect as DKA is not caused by an excess of insulin but rather by a lack of it.
2. The nurse is preparing to provide wound care for a client. Which step should be done first?
- A. Don procedural gloves
- B. Remove the dressing
- C. Apply prescribed medications to the wound
- D. Don a pair of sterile gloves
Correct answer: A
Rationale: The correct answer is to don procedural gloves first. Donning procedural gloves is essential to protect the nurse from contaminants while removing the old dressing. This step helps maintain aseptic technique and prevents the transfer of microorganisms. Removing the dressing (choice B) should follow after wearing gloves to prevent the spread of pathogens. Applying prescribed medications (choice C) should be done after the wound is cleaned and dressed. Donning a pair of sterile gloves (choice D) is not necessary for initial wound care; procedural gloves are sufficient for standard wound care.
3. An 8-year-old is placed in 90-90 traction for a fractured femur resulting from a motor vehicle collision. Which finding requires further action by the nurse?
- A. No bowel movement for two days
- B. Mother assists child in changing positions
- C. Weights are touching the foot of the bed
- D. Child is able to move the toes freely when tickled
Correct answer: C
Rationale: The correct answer is C. In 90-90 traction, the weights should hang freely and not touch the foot of the bed to maintain proper traction and bone alignment. Option A is not necessarily a concern as bowel movements can be influenced by various factors, including diet changes and pain medication. Option B indicates good caregiver involvement, promoting comfort and preventing complications. Option D demonstrates neurovascular function, which is a positive finding. Therefore, the weights touching the foot of the bed is the finding that requires immediate attention to ensure the effectiveness of the traction.
4. A client who is post-operative from a bowel resection is experiencing abdominal distention and pain. The nurse notices the client has not passed gas or had a bowel movement. What should the nurse assess first?
- A. The client's bowel sounds.
- B. The client's fluid intake.
- C. The client's pain level.
- D. The client's surgical incision.
Correct answer: A
Rationale: Assessing bowel sounds is crucial in this situation as it helps determine if the client's gastrointestinal tract is functioning properly. Absent or hypoactive bowel sounds can indicate an ileus, a common post-operative complication. Assessing fluid intake (Choice B) is important but should come after assessing bowel sounds. Pain assessment (Choice C) is essential but addressing the physiological issue should take precedence. Checking the surgical incision (Choice D) is relevant but not the priority when the client is experiencing abdominal distention and potential gastrointestinal complications.
5. While caring for a client with an AV fistula in the left forearm, the PN observed a palpable buzzing sensation over the fistula. What action should the PN take?
- A. Loosen the fistula dressing
- B. Report the presence of a bounding pulse
- C. Document that the fistula is intact
- D. Apply gentle pressure over the site
Correct answer: C
Rationale: A palpable buzzing sensation, known as a thrill, over an AV fistula indicates proper functioning. The correct action for the PN is to document that the fistula is intact. Choice A is incorrect because there is no need to loosen the fistula dressing when the thrill is felt. Choice B is incorrect as a bounding pulse is not related to the observed buzzing sensation. Choice D is incorrect because applying pressure is unnecessary when a thrill is present, indicating proper AV fistula function.
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