Table 2. Median Concentration of Measured Variables over the Three Time Points

* Significant change (P < 0.025) from t¹to t².

† Significant change (P < 0.025) from t²to t³.

‡ Significant change (P < 0.025) from t¹to t³.

Pco²= partial pressure of carbon dioxide; SIDa = strong ion difference apparent; SIDe = strong ion difference effective; SIG = strong ion gap.