Correct Answer: B

Rationale: Administering prescribed IV antibiotics is the most crucial intervention in managing an infected foot ulcer in a client with diabetes mellitus. Antibiotics help combat the infection and prevent its spread systemically, which is vital in diabetic clients to prevent serious complications like sepsis. While obtaining a wound culture (Choice A) may provide valuable information for targeted antibiotic therapy, administering antibiotics promptly takes precedence to prevent the infection from worsening. Elevating the affected foot (Choice C) can help reduce swelling but is not as urgent as administering antibiotics. Consulting the wound care nurse (Choice D) may be beneficial for long-term wound management but does not address the immediate need to control the infection.

Correct Answer: B

Rationale: The correct answer is to check the client's blood glucose level. This is the priority action when dealing with a client admitted with hyperglycemia. Checking the blood glucose level helps determine the severity of hyperglycemia and guides further treatment. Administering insulin or fluids or monitoring intake and output are important interventions but should come after assessing the blood glucose level to inform the most appropriate course of action.

Correct Answer: B

Rationale: The correct answer is B: To maintain straight spinal alignment. Logrolling is a technique used to carefully turn a client while keeping the spine in a straight line, especially important for those with spinal injuries or after back surgery. Choice A is incorrect because the primary purpose is not specifically to decrease the risk of back injury but to ensure safe turning. Choice C is incorrect as the main aim is not to increase client safety by using multiple people but to protect the spine. Choice D is incorrect because the primary purpose of logrolling is not to prevent skin damage but to safeguard the spine during turning.

Correct Answer: D

Rationale: Corrected Rationale: Blurred vision or seeing yellow halos around objects are signs of digoxin toxicity, which can be life-threatening. These symptoms indicate an overdose of digoxin, requiring immediate medical attention. Muscle weakness and fatigue (Choice A) are not typically associated with digoxin toxicity. Increased appetite and weight gain (Choice B) are not indicative of digoxin toxicity either. Nausea and vomiting (Choice C) are common side effects of digoxin but are not specific signs of toxicity. Therefore, the correct answer is to monitor for blurred vision or seeing yellow halos around objects.

Correct Answer: B

Rationale: The correct answer is B: Hemoglobin. Erythropoietin stimulates the production of red blood cells, leading to an increase in hemoglobin levels. Monitoring hemoglobin is crucial to assess the effectiveness of the treatment. Choices A, C, and D are incorrect. Serum potassium levels are often monitored in chronic kidney disease, but it is not the primary parameter to evaluate the effectiveness of erythropoietin therapy. White blood cell count and platelet count are not directly influenced by erythropoietin injections for chronic kidney disease.