which of the following is the most common cause of acute renal failure
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NCLEX-PN

Kaplan NCLEX Question of The Day

1. What is the most common cause of acute renal failure?

Correct answer: A

Rationale: The most common cause of acute renal failure is shock. In cases of shock, such as hypovolemic shock where there is low blood volume, the kidneys receive inadequate blood flow leading to acute renal failure. This can result in the kidneys starting to die within 20 minutes of low pressure. While nephrotoxic drugs can also cause acute renal failure, shock is more commonly associated with this condition. An enlarged prostate can lead to urinary retention but is not the most common cause of acute renal failure. Diabetes, on the other hand, can cause chronic kidney disease over time but is not typically the primary cause of acute renal failure.

2. Elderly persons with pernicious anemia should be instructed:

Correct answer: D

Rationale: Elderly persons with pernicious anemia, a condition characterized by vitamin B12 deficiency due to lack of intrinsic factor, should be informed about the potential side effects of B12 injections. Diarrhea is a known transient side effect of B12 injections, along with pain and burning at the injection site, and peripheral vascular thrombosis. Increasing dietary intake of B12-rich foods would not be sufficient due to the malabsorption issue in pernicious anemia. Follow-up is essential in managing pernicious anemia, so instructing patients they do not need to return for follow-up is incorrect. While oral B12 may be a suitable option for some cases, it is not the preferred choice for pernicious anemia where malabsorption is the primary issue.

3. The manic client has just interrupted the group session with the counselor for the 4th time, explaining that she already knows this information on 'dealing with others when you are down' and constantly gets up and goes to the front. What should the nurse do at this time?

Correct answer: A

Rationale: In this situation, it is important to redirect the client's energy and focus. Engaging the client in a purposeful activity like making another pot of coffee can help distract them from disruptive behavior and provide an outlet for their excess energy. This choice also helps in maintaining a therapeutic environment by involving the client in a constructive task. Asking the client to reflect on their behavior (Choice B) might not be effective during a manic episode as the client may not be in a state to critically analyze their actions. Asking the group to tell the client how they feel (Choice C) can escalate the situation and may not be appropriate in this context. Instructing the client to perform jumping jacks and count aloud (Choice D) may not address the underlying issue of disruptive behavior and may not be suitable for the current situation.

4. When planning care for a client taking Heparin, which nursing diagnosis should the nurse address first?

Correct answer: B

Rationale: The correct answer is 'Risk for injury related to active loss of blood from the vascular space.' When a client is taking Heparin, the primary concern is the risk of bleeding due to its anticoagulant properties. Monitoring for signs of active blood loss is crucial to prevent complications like hemorrhage. While ineffective tissue perfusion, deficient knowledge, and impaired skin integrity are important, they are secondary to the immediate risk of bleeding in clients taking anticoagulants like Heparin.

5. The client in the Emergency Department, who has suffered an ankle sprain, should be taught to:

Correct answer: A

Rationale: When a client suffers an ankle sprain, the nurse should teach them to use cold applications to the sprain during the first 24-48 hours. Cold applications are believed to produce vasoconstriction and reduce the development of edema. Expecting disability to decrease within the first 24 hours of injury (choice B) is incorrect as disability and pain are anticipated to increase during the first 2-3 hours after injury. Expecting pain to decrease within 3 hours after injury (choice C) is also incorrect as pain and swelling usually increase initially. Beginning progressive passive and active range of motion exercises immediately (choice D) is not recommended; these exercises are usually started 2-5 days after the injury, according to the physician's recommendation. Treatment for a sprain involves support, rest, and alternating cold and heat applications. X-ray pictures are often necessary to rule out any fractures.

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