Mean±SD of venous bicarbonate and base excess levels in relation to dehydration levels
| Non-dehydrated patients | Mild dehydration | Moderate dehydration | Severe dehydration | P value | |
| Venous bicarbonate levels (mmol/L) | 21.1±2.78 | 19.09±2.88 | 16.31±3.16 | 12.18±3.78 | 0.001 |
| Base excess | −5.9±3.29 | −8.57±3.91 | −12.26±4.31 | −18.96±4.92 | 0.001 |