Continuous Renal Replacement Therapies (CRRT) - Comparison

 - Continuous Veno-venous Hemofiltration (CVVH) utilizes convection. Replacement fluid is administered to maintain euvolemia and dilute the plasma concentration of solutes not present in the replacement fluid (i.e. urea nitrogen, creatinine).

 - Continuous Veno-Venous Hemodialysis (CVVHD) utilizes diffusion and convection. Replacement fluid is not used in CVVHD.

 - Continuous Veno-Venous Hemodiafiltration (CVVHDF) uses a combination of convection and diffusion. Replacement fluid is also used to maintain euvolemia as in CVVH.



Samira Farouk, MD, MS, FASN @ssfarouk



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