Tuesday, April 19, 2016

What should be the dose of CRRT in patients with sepsis?

Continuous renal replacement therapy (CRRT) has been suggested to play a part in immunomodulation by cytokine removal. However, the effect of continuous venovenous hemodiafiltration (CVVHDF) dose on inflammatory cytokine removal and its influence on patient outcomes are not yet clear.

Randomised Controlled Trial published in American Journal of Kidney Diseases 2016

Intervention: Conventional (40 mL/kg/h) and high (80 mL/kg/h) doses of CVVHDF for the duration of CRRT
Results: High-dose CVVHDF, but not the conventional dose, significantly reduced interleukin 6 (IL-6), IL-8, IL-1b, and IL-10 levels.
Conclusions
High CVVHDF dose did not improve patient outcomes despite its significant influence on inflammatory cytokine removal. CRRT-induced immunomodulation may not be sufficient to influence clinical end points.
Personal view: These patients are so sick, that these studies usually fail to find a change in the hard clinical end points. 

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