What is the correct treatment for a thermal burn covering a patient's arm?

Covering a thermal burn with a dry sterile dressing is the appropriate treatment because it helps protect the burn area from further injury and contamination. This protective layer can prevent infection and helps to maintain moisture in the wound, which is crucial for the healing process. Additionally, a sterile dressing provides comfort by reducing exposure to air, which can cause pain and sensitivity.

Applying ice directly to a burn can cause further tissue damage and complicate the healing process. Keeping the burn unwrapped exposes the wound to potential infection and irritation from environmental factors. Using ointment can also pose risks, as not all ointments are suitable for open burns and could lead to complications; proper methods of care should prioritize cleanliness and protection first.