Acid-base

Henderson-Hasselbalch

pH from PaCO₂ and HCO₃ (or HCO₃ from pH and PaCO₂).

acid-base

Required inputs

  • PaCO₂ (mmHg)
  • HCO₃ (mEq/L)

Equation or source

Standard physiology — Henderson 1908, Hasselbalch 1916.

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