Figure 2.

Blood flow (Qb) rates and catheter type-related pressure values for access flow (P_Qa) and blood return (venous pressure [Pv]). Data of all experiments and time points during continuous venovenous hemofiltration within each study group were summarized, and data distribution is visualized using box plots. The boxes indicate 25th and 75th percentiles, and the medians are shown by the bars within the box plots. Bars provide minimum/maximum values, including outliers. Because we focused on alternatives covering all patients and outliers are part of the very nature of critically ill patients and in turn the topic of this study, we did not accept data classified as outlier. (a) Highest Qb rates achievable in the respective study groups. (b) A summary of all Qb rates used in the respective study groups. In both catheter study groups, comparable blood flow rates were used with similar distributions of different Qb rates. (c) P_Qa values measured in the respective study groups. (d) Pv levels measured in the respective study groups.