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Continuous venovenous haemodialysis: a three-pump system

D Møller Jensen1, C Bistrup, R S Pedersen

  • 1Department of Internal Medicine, Ribe County Hospital, Esbjerg, Denmark.

Nephron
|January 1, 1996
PubMed
Summary

This study introduces a simple, inexpensive three-pump system for continuous venovenous hemodialysis. The method effectively manages fluid balance and azotemia, even in hemodynamically unstable patients.

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Area of Science:

  • Nephrology
  • Critical Care Medicine
  • Medical Devices

Background:

  • Continuous venovenous hemodialysis (CVVH) is crucial for managing acute kidney injury in critically ill patients.
  • Existing CVVH systems can be complex and costly.
  • Hemodynamic instability often complicates renal replacement therapy.

Purpose of the Study:

  • To describe a novel, simple three-pump system for continuous venovenous hemodialysis.
  • To evaluate the efficacy and usability of this system in patients requiring CVVH.

Main Methods:

  • The system utilizes a double-lumen catheter for vascular access.
  • Blood is circulated through a haemofiltration filter using a standard peristaltic pump.
  • Dialysate is administered countercurrent to blood flow via two intravenous infusion pumps.
  • Continuous heparin infusion is used for anticoagulation.

Main Results:

  • The three-pump system effectively controlled fluid balance.
  • Azotemia levels were successfully managed.
  • The system facilitated CVVH in patients with severe hemodynamic instability.
  • The system demonstrated ease of use and cost-effectiveness.

Conclusions:

  • This simple, inexpensive three-pump system is a viable option for continuous venovenous hemodialysis.
  • It offers effective management of fluid balance and azotemia.
  • The system is particularly beneficial for hemodynamically unstable patients, enhancing accessibility to CVVH.

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