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Emergency War Surgery NATO Handbook: Appendix B: Useful Tables

Normal Range of Concentration of Whole Blood Gases and pH Value

United States Department of Defense
Peer Review Status: Internally Peer Reviewed

Table 4. - Normal range of concentration of whole blood gases and pH value

Constituent

Concentration torr1
kPa2

pO2

Arterial

75 - 105 torr
10 - 14

Venous

30 torr
4

pCO2

Arterial

33 - 44 torr
4.5 - 5.9

Venous

38 - 49 torr
5.1 - 6.6

pH

7.35 - 7.45
  1. One torr = 1 mm Hg at sea level.
  2. One Kilo Pascal (kPa) = 7.5 mm Hg = 7.5 torr.

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