Correct Answer: A

Rationale: The correct answer is A: Excessive thirst and fruity breath odor. Diabetic ketoacidosis presents with these early signs due to ketone buildup in the body. Choice B, weight loss and increased urination, are more characteristic of uncontrolled diabetes but not specific to diabetic ketoacidosis. Choice C, nausea and vomiting, can occur in diabetic ketoacidosis but are not as early or specific as excessive thirst and fruity breath odor. Choice D, hypoglycemia and fatigue, are not typical signs of diabetic ketoacidosis; rather, diabetic ketoacidosis usually presents with hyperglycemia.

Correct Answer: D

Rationale: In managing hyperkalemia, it is essential to administer insulin and glucose to shift potassium into the cells, restrict potassium intake to prevent further elevation of serum levels, and monitor the ECG for signs of potassium-induced cardiac effects. Therefore, the correct answer is D, as all of the provided actions are important in the management of hyperkalemia. Choice A alone is not sufficient as it only addresses shifting potassium intracellularly without preventing further elevation. Choice B alone is not enough as it does not address the immediate need to lower serum potassium levels. Choice C alone is insufficient as it only monitors for cardiac effects without addressing potassium levels or shifting mechanisms.

Correct Answer: B

Rationale: The best approach to assist a client in performing self-care after an acute myocardial infarction, especially when the client expresses concern about fatigue, is to gradually resume self-care tasks while focusing on rest periods. This approach allows the client to build confidence in managing their self-care activities while also addressing the issue of fatigue. Choice A is incorrect as it focuses on asking for assistance rather than promoting self-care. Choice C is inappropriate as it suggests delegating the client's self-care tasks to assistive personnel instead of empowering the client. Choice D is incorrect as it can lead to deconditioning and is not conducive to the client's recovery process.

Correct Answer: C

Rationale: In this situation, the nurse's priority is to determine if the client is experiencing psychotic thinking as it addresses the immediate safety concern. Psychotic thinking may pose a risk to the client's safety or the safety of others. Referring the client to a mental health counselor (choice A) may be appropriate but not the priority when safety is a concern. Encouraging the client to express their feelings (choice B) and asking about their social support system (choice D) are essential aspects of care but are secondary to addressing immediate safety issues.

Correct Answer: B

Rationale: When caring for a client with heart failure on fluid restriction, weighing the client daily is crucial to monitor fluid balance accurately. This helps healthcare providers assess if the client is retaining excess fluids, which can worsen heart failure. Encouraging the client to drink more fluids (choice A) contradicts the goal of fluid restriction. Limiting intake of fruits and vegetables (choice C) is not a specific guideline for managing fluid restriction in heart failure. Monitoring fluid intake only during meals (choice D) is insufficient as fluid balance needs to be monitored consistently throughout the day.