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Related Experiment Videos

Evaluation of a peritoneal dialysis solution containing polymer.

J Rubin, Q Jones, A Planch

    The American Journal of the Medical Sciences
    |January 1, 1985
    PubMed
    Summary

    A novel starch-derived polymer offers a potential alternative to glucose in peritoneal dialysis fluid. This polymer facilitates ultrafiltration with a lower osmotic load, reducing the glucose burden for patients undergoing dialysis.

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    Area of Science:

    • Nephrology
    • Biomaterials Science
    • Medical Devices

    Background:

    • Glucose in peritoneal dialysate creates an osmotic gradient for ultrafiltration but can lead to a high glucose body burden due to the peritoneal membrane's properties.
    • Alternative osmotic agents with lower permeation rates are needed to improve patient outcomes and reduce metabolic complications.

    Purpose of the Study:

    • To evaluate the mass transfer coefficient (mtc), peritoneal clearance (T1/2 disappearance), and ultrafiltration (UF) capacity of a novel starch-derived polymer.
    • To compare the performance of polymer solutions against standard glucose-based peritoneal dialysis solutions.

    Main Methods:

    • A randomized complete block design study was conducted on 5 anephric dogs undergoing chronic peritoneal dialysis.
    • Evaluated 8% and 10% starch-derived polymer (Pol) solutions against 2.5% and 4.25% glucose (Glc) solutions.

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  • Measured mass transfer coefficient (mtc), T1/2 disappearance from the peritoneal cavity, and ultrafiltrate volume over 180 minutes.

    • Main Results:

    • Glucose solutions exhibited significantly higher mass transfer coefficients (mtc: 13-14 ml/min) compared to polymer solutions (mtc: 5-6 ml/min).
    • Glucose solutions also showed faster T1/2 disappearance (111-112 min) versus polymer solutions (252-281 min).
    • Polymer solutions generated significantly greater ultrafiltrate volumes (640-912 ml) than 2.5% glucose (113 ml) and comparable to 4.25% glucose (589 ml) at lower osmolalities.

    Conclusions:

    • The lower permeation rate of the starch-derived polymer enables effective ultrafiltration at a reduced dialysate osmolality.
    • Polymer-based solutions present a promising, potentially safer alternative to glucose for peritoneal dialysis, mitigating glucose overload.