Median values of plasma IL-6 (ng / ml) concentrations tend to decrease but bear no statistical significance, p> 0.05: 727.0 (147.7 - 1095.0) (before CHF), 470.7 (126.7 - 1021.0) (8 hours), 480.4 (114.9 - 1153.2) (24 hours), 371.2 (70.8 - 1207.5) (48 hours).