What question did this study set out to answer?

To evaluate how modifying dialysate bicarbonate concentrations during a hemodialysis session affects circulating plasma electrolyte levels.

May 1, 2025The International Journal of Artificial Organs

Change in plasma electrolyte concentrations during hemodialysis following a controlled step-up in dialysate bicarbonate concentration

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Authors

MDMałgorzata DębowskaInstitute of Biocybernetics and Biomedical Engineering MWMonika WieliczkoMedical University of Warsaw MPMauro PietribiasiInstitute of Biocybernetics and Biomedical Engineering

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Implication

Crossover study demonstrates stepped dialysate bicarbonate alters plasma chloride and calcium levels during hemodialysis, indicating linked electrolyte shifts.

Key Points

To evaluate how modifying dialysate bicarbonate concentrations during a hemodialysis session affects circulating plasma electrolyte levels.
Monitored 25 anuric prevalent hemodialysis patients (mean age 67.9 ± 9.3 years, 32% female) across two midweek hemodialysis sessions.
Compared a constant dialysate bicarbonate regimen (treatment A: 33.6 ± 1.7 mmol/L) against a stepped regimen (treatment B: 30.8 ± 2.3 mmol/L for the initial 2 h, stepped up to 34.0 ± 2.5 mmol/L for the final 2 h).
Plasma bicarbonate increased in both sessions but was lower in treatment B than A at 60 and 120 minutes, while plasma chloride decreased overall but remained higher in treatment B at 60 and 120 minutes.
Plasma calcium increased in both arms and was significantly higher in treatment B than A at 60 and 120 minutes, whereas sodium and potassium profiles did not differ substantially.
Differences in dialysate bicarbonate correlated positively with plasma bicarbonate changes and negatively with plasma chloride and calcium changes, predicting a -0.27% change in plasma chloride and a -0.16% change in plasma calcium per 1% increase in dialysate bicarbonate.

Cite This Study

Dębowska et al. (2025) studied this question.

synapsesocial.com/papers/6a976e2d923bb7518ba66b01 https://doi.org/10.1177/03913988251337323

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Implication

Crossover study demonstrates stepped dialysate bicarbonate alters plasma chloride and calcium levels during hemodialysis, indicating linked electrolyte shifts.

Change in plasma electrolyte concentrations during hemodialysis following a controlled step-up in dialysate bicarbonate concentration

Discussion

Member takes

Implication

Key Points

Cite This Study

Change in plasma electrolyte concentrations during hemodialysis following a controlled step-up in dialysate bicarbonate concentration

Discussion

Member takes

Implication

Key Points

Cite This Study

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