Normal ABG values on room air include which pH range?

Normal ABG values on room air include which pH range?

• A. 7.15 to 7.25
• B. 7.29 to 7.37
• C. 7.40 to 7.50
• D. 7.60 to 7.70

Answer: (B)

The pH value in an arterial blood gas reflects acid-base balance, with normal values typically around 7.35 to 7.45. In many neonatal and pediatric references, a practical normal range on room air is near the mid-normal zone, roughly 7.30 to 7.40. Among the given ranges, the one that best matches a typical normal window without dipping into clear acidemia or alkalemia is 7.29 to 7.37. The lower end around 7.29 sits at the edge of normal for neonates, while the upper end 7.37 stays well within normal. The other ranges describe values that are clearly acidic or clearly alkaline, or lie outside the common room-air normal span. So, this range best represents normal ABG pH on room air.

The pH value in an arterial blood gas reflects acid-base balance, with normal values typically around 7.35 to 7.45. In many neonatal and pediatric references, a practical normal range on room air is near the mid-normal zone, roughly 7.30 to 7.40. Among the given ranges, the one that best matches a typical normal window without dipping into clear acidemia or alkalemia is 7.29 to 7.37. The lower end around 7.29 sits at the edge of normal for neonates, while the upper end 7.37 stays well within normal. The other ranges describe values that are clearly acidic or clearly alkaline, or lie outside the common room-air normal span. So, this range best represents normal ABG pH on room air.