A 30-year-old man with a history of intravenous drug use presents with fever, productive cough, dyspnoea and haemoptysis. His obs are : T 38.6, RR 30, Sats 91% RA, HR 140 (SR), BP 90/55.

Cavitating pneumonia in intravenous drug use

1. List three important findings on the chest X-ray. 3 marks

2. Complete the table listing three causative infective organisms in each patient group. 3 marks

3. Give four non-infectious differentials for the chest X-ray appearance. 4 marks

4. List and justify four important investigations that may assist in diagnosis or management. 4 marks

5. Briefly outline your management priorities. 4 marks