Choice A rationale:

Administering prescribed antibiotics and monitoring for adverse reactions is the most appropriate nursing intervention in this situation.

Osteomyelitis is an infection of the bone, often caused by bacteria.

Antibiotics are the primary treatment for bacterial infections like osteomyelitis.

Administering antibiotics as ordered helps target and eradicate the infection.

Monitoring for adverse reactions is crucial because antibiotics can have side effects such as allergic reactions, gastrointestinal upset, or renal toxicity.

By closely observing the patient for any adverse effects, the nurse can promptly intervene and ensure the patient's safety.

Choice B rationale:

Assisting with wound care and dressing changes to maintain a clean and sterile environment is an essential aspect of managing osteomyelitis, but it is not the first-line nursing intervention in this scenario.

The primary treatment for osteomyelitis is antibiotics, and addressing the infection systemically takes precedence over local wound care.

However, wound care is important in the overall management of the condition and should be done in conjunction with antibiotic therapy.

Choice C rationale:

Collaborating with the healthcare team to ensure adequate pain management is important for the patient's comfort and well-being, but it is not the initial nursing intervention.

Pain management can be addressed after initiating antibiotic therapy and assessing the patient's response to treatment.

Choice D rationale:

Encouraging mobility and range of motion exercises to prevent joint stiffness and muscle atrophy is a valuable nursing intervention for patients with osteomyelitis, especially as they recover.

However, it is not the immediate priority in this situation.

First, the infection needs to be controlled with antibiotics before focusing on mobility and range of motion exercises.