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Figure 37.1

Acid-Base Diagram Relating Arterial pH or Hydrogen Ion Concentration to PaCO2

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The shaded rectangle is the normal range. The 95% confidence limits of hydrogen ion concentration/PaCO2 relationships in single disturbances of acid-base balance are shown. Source: Flenley DC (1971) Lancet 1, 961. Reproduced with permission of Elsevier.