A 19 year old male is admitted after a severe traumatic brain injury. Due to refractory intracranial hypertension he is intubated and receiving 20mg an hour of morphine, 20mg an hour of midazolam and 200mg an hour of propofol.
A 67 year old gentleman with a BMI of 45 was waiting for his respiratory outpatient clinic appointment. While waiting, he fell asleep. A medical emergency was called because he could not be woken up. On arrival of the MET team the patient is found to have a blood pressure of 140/70, a heart rate of 100bpm and oxygen sats of 68% on room air. He is breathing spontaneously but requires airway support. His GCS is 3/15. Supplemental oxygen is applied and the following arterial blood gas is obtained.