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Related Experiment Videos

Factors affecting bicarbonate transfer with bicarbonate-containing CAPD solution

M Feriani1, J Passlick-Deetjen, G La Greca

  • 1Department of Nephrology, St. Bortolo Hospital, Vicenza, Italy.

Peritoneal Dialysis International : Journal of the International Society for Peritoneal Dialysis
|October 1, 1995
PubMed
Summary
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Patients undergoing continuous ambulatory peritoneal dialysis (CAPD) gain bicarbonate effectively, with ultrafiltration rate being the most significant factor influencing net bicarbonate gain. Dialysis solution bicarbonate concentration should increase with solution osmolality.

Area of Science:

  • Nephrology
  • Biochemistry
  • Physiology

Background:

  • Continuous ambulatory peritoneal dialysis (CAPD) is a vital treatment for end-stage renal disease.
  • Optimizing dialysis solutions is crucial for patient outcomes, particularly regarding acid-base balance.

Purpose of the Study:

  • To investigate bicarbonate transport across the peritoneal membrane during CAPD.
  • To quantify bicarbonate gain in CAPD patients using varying dialysis solutions.

Main Methods:

  • Studied 43 stable CAPD patients undergoing 97 exchanges with diverse dwell times and solution compositions.
  • Measured dialysate effluent bicarbonate and volume, and patient acid-base status.
  • Calculated net dialytic bicarbonate gain.

Related Experiment Videos

Main Results:

  • Effluent bicarbonate correlated with plasma bicarbonate in prolonged dwells (6-12 hours).
  • In shorter dwells (4 hours), effluent bicarbonate correlated with plasma bicarbonate and ultrafiltration rate.
  • Net bicarbonate gain was significantly influenced by ultrafiltration rate, plasma bicarbonate, and solution bicarbonate concentration.

Conclusions:

  • Effluent bicarbonate concentration is primarily linked to plasma bicarbonate levels.
  • Ultrafiltration rate significantly impacts net patient bicarbonate gain during CAPD.
  • Bicarbonate content in CAPD solutions may need adjustment based on osmolality and patient acid-base status.