A pt with history of COPD is receiving 28% oxygen via face mask and has the following ABG values.
pH. 7.35
pCO₂ 48
pO₂ 62
HCO₃ 26
O2 sat 89
Which of the ff is indicated at this time
A. continue ongoing therapy and monitoring
B. increase the dead space of the oxygen tubing
C. increase the FIO₂
D. administer 1 meq/kg of sodium bicarbonate