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Optimizing dialysate potassium.

Jennifer Lee1, David C Mendelssohn2

  • 1Humber River Hospital, Toronto, Canada.

Hemodialysis International. International Symposium on Home Hemodialysis
|May 6, 2016
PubMed
Summary
This summary is machine-generated.

Potassium shifts in hemodialysis (HD) patients can cause arrhythmia. Maintaining predialysis serum potassium around 5.0 mmol/L and avoiding dialysate potassium <2.0 mmol/L is crucial for patient safety.

Keywords:
Quality improvementcardiovascularcomplicationsmedical director issuespatient safety

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Area of Science:

  • Nephrology
  • Cardiology
  • Clinical Medicine

Background:

  • Potassium shifts are a significant concern in patients undergoing thrice-weekly hemodialysis (HD).
  • These shifts are linked to potentially fatal arrhythmias and sudden cardiac death.
  • Current practices may not optimally manage dialysate potassium levels.

Observation:

  • Dialysate potassium concentrations below 2.0 mmol/L should generally be avoided.
  • Many patients can tolerate an upward adjustment of dialysate potassium from 2.0 mmol/L.
  • The target predialysis serum potassium level is approximately 5.0 mmol/L.

Findings:

  • Trends in serum potassium, rather than isolated values, should guide adjustments to chronic dialysate potassium prescriptions.
  • Atypical potassium values require individual assessment and should not dictate long-term changes in bath composition.
  • Dietary potassium intake counseling by a renal dietitian is essential for preventing recurrent hyperkalemic or hypokalemic episodes.

Implications:

  • Healthcare facilities must implement robust systems to alert physicians to potential potassium bath mismatches.
  • A standardized, facility-wide policy, endorsed by all stakeholders, is the most effective approach to managing potassium levels in HD patients.
  • Optimizing dialysate potassium management can reduce the risk of cardiac events in HD patients.