You review a 28-year-old woman with no past medical history of note. For the past week she has being experiencing left sided pleuritic chest pain. Her GP treated her for pleurisy with amoxicillin but there has been no improvement in her symptoms. She denies any shortness of breath and oxygen saturations on room air are 98%. A chest x-ray shows a 20% pneumothorax on the left side. What is the most appropriate management?
Observe for 24 hours before discharging with standard advice
Insert a chest drain
Discharge with standard advice
Aspiration
Observe for 48 hours then repeat chest x-ray