A 75 y/o 5’10” tall, 90 kg man is admitted to the ICU follow…

A 75 y/o 5’10” tall, 90 kg man is admitted to the ICU following a chief complaint of chest pain and SOB. The patient is now in a state of ALOC and an arterial blood gas was obtained:pH           7.23PaCO2         65 torr  PaO2        35 torrHCO3       25 mEq/LBE           -1 mEq/LWhich of the following is the appropriate therapy for this patient?