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Normal arterial [HCO3-] is about 24 mEq/L, and normal arterial PCO2 is about 40 mm Hg....

Normal arterial [HCO3-] is about 24 mEq/L, and normal arterial PCO2 is about 40 mm Hg. How much does [HCO3-] need to increase above normal to maintain a pH of 7.40 if PCO2 rises to 60 mmHg?

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