Prescribing high-quality peritoneal dialysis: Moving beyond urea clearance

Area of Science:

• Nephrology
• Renal Replacement Therapy
• Dialysis Adequacy

Background:

• Urea removal has historically been the primary metric for peritoneal dialysis (PD) adequacy.
• Its effectiveness is limited by poor correlation with other uraemic solute clearances and uncertain impact on patient survival.
• A broader assessment is needed for holistic PD evaluation.

Purpose of the Study:

• To review the historical urea and creatinine-focused approach to dialysis adequacy.
• To explore the importance of other uraemic retention solutes, electrolytes, and nutritional status in PD.
• To promote a multidimensional concept of clearance for improved PD outcomes.

Main Methods:

• Literature review of historical and current approaches to dialysis adequacy.
• Exploration of various solutes and clinical parameters beyond urea.
• Discussion of person-centered outcomes in PD.

Main Results:

• Urea clearance alone is an insufficient measure of PD adequacy.
• Other factors like solute clearance, electrolyte balance, hypoalbuminemia, and nutritional status are crucial.
• A multidimensional approach is superior for evaluating PD effectiveness.

Conclusions:

• Shifting focus from solely urea to a comprehensive set of parameters enhances PD adequacy assessment.
• Integrating solute clearances, nutritional status, and patient-centered outcomes provides a more holistic view.
• This broader concept of clearance is vital for optimizing PD patient care.