what is the primary cause of diabetic ketoacidosis dka
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HESI LPN

HESI PN Exit Exam 2024

1. What is the primary cause of diabetic ketoacidosis (DKA)?

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 UAP reports to the PN that a client refused to bathe for the third consecutive day. Which action is best for the PN to take?

Correct answer: D

Rationale: The best action for the PN to take when a client refuses to bathe is to ask the client why the bath was refused. Understanding the client's reasons for refusing a bath is crucial as it helps to address any underlying issues, such as fear, discomfort, or physical limitations. By communicating directly with the client, the PN can provide appropriate care tailored to the client's needs. Choices A, B, and C do not directly address the root cause of the refusal and may not effectively resolve the issue.

3. Which nursing intervention is most appropriate for managing delirium in an elderly patient?

Correct answer: C

Rationale: Encouraging family presence is the most appropriate intervention for managing delirium in elderly patients. This intervention provides orientation, reassurance, and comfort, which can help reduce confusion and anxiety, thus aiding in managing delirium. Keeping the room brightly lit (Choice A) may worsen delirium as it can disrupt the patient's sleep-wake cycle. Administering sedatives (Choice B) should be avoided unless absolutely necessary due to the risk of worsening delirium. Restricting fluids (Choice D) is not a recommended intervention for managing delirium, as hydration is important for overall patient well-being.

4. When administering an analgesic to a client with low back pain, which intervention should the practical nurse implement to promote the effectiveness of the medication?

Correct answer: A

Rationale: Massaging the lower back and positioning the client in proper alignment can help relieve muscle tension and enhance the effectiveness of analgesics by providing additional comfort and promoting better pain management. This intervention directly addresses the site of pain and can improve the medication's efficacy. Choices B, C, and D are incorrect because while they may have benefits in other situations, they are not directly related to promoting the effectiveness of analgesics in clients with low back pain. Encouraging ambulation and deep breathing, assisting with range of motion exercises, and offering water and high-fiber foods are important for overall patient care but are not specific to enhancing analgesic effectiveness in this context.

5. The nurse is caring for an elderly female client who tells the nurse, 'When I sneeze, I wet my pants.' After discussing the client's complaint with the charge nurse, the nurse plans to reinforce teaching about the importance of Kegel exercises. What muscles are involved in these exercises?

Correct answer: D

Rationale: Kegel exercises involve the pelvic floor muscles. These muscles help strengthen the muscles controlling urination, potentially reducing symptoms of urinary incontinence. Pectoral muscles (Choice A), responsible for movement of the shoulders and arms, are not involved in Kegel exercises. Buttock muscles (Choice B) are primarily responsible for hip movement and stability, not related to Kegel exercises. Abdominal muscles (Choice C) support the core and trunk but are not the focus of Kegel exercises.

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