Question category: Respiratory
A 65 year old male with COPD presents with an acute exacerbation. He is commenced on salbutamol and ipratropium nebulisers and given IV hydrocortisone. However blood gases reveal a pO2 of 8.0 kPa and a pCO2 of 10.0 kPa and a pH of 7.2. What is the next appropriate step in management?