This document provides normal ranges for arterial blood gas (ABG) values including pH, partial pressure of carbon dioxide (Paco2), partial pressure of oxygen (Pao2), oxygen saturation (Sao2), and bicarbonate (HCO3). It also defines the anion gap formula as sodium minus chloride plus bicarbonate, states the normal anion gap is 12 mmol/L, and notes hyperchloremia can cause changes in the anion gap.

1. ABG
Hamad Emad H. Dhuhayr

2. NORMAL ARTERIAL BLOOD GAS VALUES*
PH 7.35 - 7.45
PACO35 - 45 MM HG
2 PAO70 - 100 MM HG **
2 SAO93 - 98%
2 HCO¯ 22 - 26 MEQ/L
3

5. AG
• ANION GAP = NA – (CL + HCO3)
• IT USE FOR CONFIRM THE CAUSE OF METABOLIC ACIDOSIS
• NORMAL AG IS 12 MMOLL (10-14)
• HYPERCHLOREAMIC .