Hyponatremia is associated with more severe biliary disease

Figure 1 Sodium level - influence of ascending level of biliary bacteria. A higher level of bacterial infection is an independent predictor of lower sodium level, P < 0.01.

Figure 2 Sodium level - influence of illness severity and Charlson Comorbidity Index score. Illness severity and Charlson Comorbidity Index score (CCI) are both independent predictors of sodium level (Open circles - CCI 0-2; Closed circles - CCI 3-4; Closed squares - CCI 5 or higher). P values significant (< 0.01) for all. CCI: Charlson Comorbidity Index.

Figure 3 Sodium level - Influence of the level of bacterial infection and presence of gangrene. A higher level of biliary infection and the presence of gangrene are both independent predictors of sodium level (Open circles - absence of gangrene; Closed circles - presence of gangrene). P values significant (< 0.01) for all parings.