CRRT

Filtration fraction (CVVH)

FF = Qf / Qp where Qp = Qb × (1 − Hct). Keep < 25% to limit hemoconcentration and clotting.

CRRTclotting

Required inputs

  • Blood flow Qb (mL/min)
  • Hematocrit (%)
  • Total filtrate flow Qf (mL/min)
  • Pre-filter replacement (mL/min)

Equation or source

Ronco C. KI 2011;80:115.

Provenance and release status

Equation / algorithm
FF = Qf / Qp where Qp = Qb × (1 − Hct). Keep < 25% to limit hemoconcentration and clotting.
Formula version
ff-v1
Tool version
2.4.0
Clinical risk class
C. HIGH-RISK CLINICAL CALCULATOR
Release status
Temporarily unavailable
Source status
Direct primary source identifier not yet resolved
Clinical review status
Clinical verification incomplete; active calculation unavailable
Clinical review date
Clinical review date not yet documented

DOI / PMID / direct guideline identifier not yet documented.

Assumptions

  • Entered values and units are accurate and apply to the population described by the cited source.
  • The published equation or rule is being used without a patient-specific clinical adjustment.

Important limitations

  • The result is a calculated estimate, not a prescription, treatment order, or diagnosis.
  • Local protocols, the full clinical context, and the primary source must be checked before use.
View verification status