A 32-year-old man presents to the Emergency Department with left-sided pleuritic chest pain. He is slightly tachypnoeic but is speaking comfortably. His oxygen saturation is 97% on room air and blood pressure is 139/84 mmHg.
Chest X-ray is shown below:
He has no known chronic lung disease.
What is the most appropriate management step? Select only one best single option.
