11th November 2021

A 75-year-old male with a history of COPD presents with fever, dyspnoea and confusion

A 75-year-old male with a history of COPD presents with fever, dyspnoea and confusion. An acute exacerbation of his COPD is diagnosed. They are started on oxygen therapy. Which investigation is necessary to determine whether the patient requires non-invasive ventilation (BiPAP)?

Select the SINGLE most appropriate option from the list below. Select ONE option only.