Correct Answer: C

Rationale: The correct answer is C because monitoring kidney function with regular laboratory tests is crucial in managing CKD. Regular testing helps identify changes in kidney function early, allowing for timely interventions to prevent complications. Administering diuretics (choice A) may worsen kidney function. Encouraging weight loss (choice B) may be necessary, but monitoring kidney function takes precedence. Encouraging the patient to limit fluid intake (choice D) may be necessary in some cases, but it is not the priority intervention.

Correct Answer: A

Rationale: The correct answer is A: Shortness of breath and weight gain. In chronic heart failure, fluid overload can lead to pulmonary congestion, causing shortness of breath. Weight gain is also a key sign of fluid retention. Increased urine output and hypotension (choice B) are more indicative of dehydration. Fatigue and dizziness (choice C) can be nonspecific symptoms and not directly related to fluid overload. Dry mouth and thirst (choice D) are symptoms of dehydration rather than fluid overload in chronic heart failure. Monitoring for shortness of breath and weight gain allows for early detection and intervention in managing fluid overload in patients with chronic heart failure.

Correct Answer: A

Rationale: The correct answer is A because using the defrost setting on microwave ovens can help safely heat breast milk or formula for the infant without compromising its quality. This method ensures that the milk is heated evenly and prevents hot spots that could burn the baby's mouth. Choice B is incorrect because refrigerating partially used bottles can lead to bacterial growth and contamination. Choice C is incorrect as mixing water and concentrate in different ratios can result in either too diluted or too concentrated formula, which can be harmful to the infant. Choice D is incorrect as adding new formula to partially used bottles can also lead to bacterial growth and spoilage.

Correct Answer: C

Rationale: The correct answer is C: Assessing for signs of infection. This is the priority because diabetic foot ulcers are at high risk for infection, which can lead to serious complications. By assessing for signs of infection such as redness, warmth, swelling, pus, or foul odor, the nurse can promptly identify and initiate appropriate treatment. Administering antibiotics (A) should be based on the assessment findings. Providing pain relief (B) is important but not the priority when infection is a concern. Encouraging weight-bearing activity (D) may worsen the ulcer and should be avoided initially.

Correct Answer: A

Rationale: The correct answer is A: Cleanse and dress the wound. This intervention is essential as it helps prevent infection, promotes healing, and maintains a moist wound environment. Cleansing removes debris and bacteria, while dressing protects the wound from external contaminants. Administering antibiotics (choice B) is not the initial intervention for an open wound. Placing a sterile dressing (choice C) is important, but cleansing the wound first is crucial. Ensuring wound care is sterile (choice D) is important, but the primary focus should be on cleansing and dressing the wound.