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Related Experiment Videos

Different buffers for hemodiafiltration: a controlled study.

S Biasioli1, M Feriani, S Chiaramonte

  • 1Nephrology & Dialysis Unit, Legnago Hospital, Italy.

The International Journal of Artificial Organs
|January 1, 1989
PubMed
Summary
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Bicarbonate hemodiafiltration (BHDF) improves dialysis efficiency and patient outcomes. This method enhances cardiovascular stability compared to traditional hemodialysis and hemodiafiltration without bicarbonate buffers.

Area of Science:

  • Nephrology
  • Renal Replacement Therapy
  • Biochemistry

Background:

  • Hemodiafiltration (HDF) commonly uses dialysate with acetate or bicarbonate and replacement fluid with lactate.
  • The specific roles of different buffer systems in HDF require clarification.

Purpose of the Study:

  • To investigate the impact of various buffer compositions in dialysate and replacement fluid during HDF.
  • To compare bicarbonate hemodialysis (BHD) with different HDF protocols.

Main Methods:

  • 11 patients underwent sequential 3-month study periods.
  • Protocols included BHD, HDF with acetate/lactate, HDF with acetate/bicarbonate, HDF with bicarbonate/lactate, and HDF with bicarbonate/bicarbonate (BHDF).
  • Dialytic efficiency (kt/V), acid-base status, dry weight achievement, and side effects were monitored.

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Main Results:

  • HDF increased dialytic efficiency (kt/V=1.28) and reduced session time (197 min).
  • BHDF improved acid-base status and dry weight gain (92.8% vs. 81% in BHD).
  • Dialytic side effects decreased, particularly with bicarbonate buffers.

Conclusions:

  • Bicarbonate hemodiafiltration (BHDF) is an effective and safe technique.
  • BHDF offers superior cardiovascular stability compared to BHD and HDF without bicarbonate.
  • Optimizing buffer composition in HDF enhances treatment efficacy and patient tolerance.