You are the FY2 Doctor currently on-call in the medical assessment unit. You admit a patient onto the ward and prescribe intravenous antibiotics for suspected pneumonia. A subsequent chest X-ray and blood test results, demonstrate evidence of heart failure, rather than pneumonia. When you review the patient again, they do not feel their symptoms are improving. Do you:
Rank the following actions in order from the most appropriate (1) to the least appropriate (5) in this situation.