Continuous arteriovenous hemofiltration in the critically ill patient. Clinical use and operational characteristics

Ann Intern Med. 1983 Oct;99(4):455-60. doi: 10.7326/0003-4819-99-4-455.


Continuous arteriovenous hemofiltration is an extracorporeal technique for the treatment of fluid overload and electrolyte disturbances and for the removal of urea nitrogen. This technique is especially applicable in critically ill patients with hemodynamic instability. A special filter and modified hemodialysis blood lines can easily and rapidly be attached to a patient. No special blood access is needed. Fluids and solutes are removed from the patient by ultrafiltration. A net filtration pressure inside the filter causes an ultrafiltrate to form. The extracorporeal circuit can be kept in place for hours or days.

Publication types

  • Comparative Study

MeSH terms

  • Acute Kidney Injury / therapy*
  • Blood Flow Velocity
  • Blood Pressure
  • Blood Urea Nitrogen
  • Blood*
  • Body Weight
  • Hematocrit
  • Humans
  • Renal Dialysis
  • Time Factors
  • Ultrafiltration / instrumentation
  • Ultrafiltration / methods*
  • Urea / isolation & purification


  • Urea