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Biocompatible PD Solutions Advantage — ESENeph MCQ

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ModeratePeritoneal DialysisBiocompatible PD Solutions AdvantageESENeph

A 55-year-old man on PD uses biocompatible PD solutions (neutral pH, low GDP). His PD nurse explains the rationale. What advantage do biocompatible solutions have over conventional glucose-based solutions?

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Correct answer: B — Biocompatible solutions (neutral pH, low glucose degradation products) cause less peritoneal membrane damage, better preserve residual renal function, and may prolong PD technique survival compared to conventional acidic, high-GDP solutions

Conventional PD solutions have low pH (5.2-5.5) and contain high levels of glucose degradation products (GDPs) from heat sterilisation. GDPs (methylglyoxal, formaldehyde, 3-deoxyglucosone) are directly toxic to peritoneal mesothelial cells, promote fibrosis, neoangiogenesis, and accelerate membrane failure. Biocompatible solutions use multi-chamber bags (separating glucose from buffer until mixing before use), achieving neutral pH and very low GDP levels. The balANZ trial showed better preservation of residual renal function and peritoneal membrane integrity. ISPD 2020 suggests biocompatible solutions particularly for patients with significant residual function.

Reference: ISPD 2020 – PD Solutions; balANZ Trial – JASN 2012