CRRT modes and indications
- CVVH: depends on pressure between two sides, flow of fluid, pore size of membrane, then drag of solute with it
- CVVHD: diffusive. Gradient between two sides
- HDF: both solvent drag and diffusion.
- only for fluid removal
- dependent on pressures
- A pump creates negative pressure
- doesn’t really do it here
- substitution: replacement fluid
- pump creates negative pressure
- solute and fluid both dragged across membrane
- counter current dialysate going opposite direction as blood flow. Has gradient and diffusion
- good for smaller molecules
- can add therapy fluid to create CVVHDF
- uremia: CVVHD
- fluid + solute: CVVH
- fluid: SCUF
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