A 60 year old man is brought to your ED from a burning factory. He was found uncoscious in the building.

His Observations:

PR 115/min

BP 100/60

RR 8/min, O2 sats 99, on 15litres non rebreather

GCS 6

Describe and Interpret his ABG

pH 7.2 (7.36-7.44)

pCO2 56 (35-45)

pO2 160 (80-95)

HCO3 18 (22-28)

BE -7 (-3,+3)