year old male who is known to have COPD is admitted with an exacerbation of
symptoms. On examination he appears drowsy and is in respiratory distress
Chest X-ray shows collapse consolidation of his right lower lobe
Blood gases show pH 7.24 pCO2 8.5 kPa
this patient which one of the following management steps would you undertake?
oxygen by mask
Intubation and ventilation