+1 Recommend
1 collections
      • Record: found
      • Abstract: found
      • Article: found

      An in vitro Bacterial Touch Contamination Risk Assessment of Two CAPD Twinbag Systems

      , ,

      Blood Purification

      S. Karger AG

      Touch contamination, Twinbag, Microbial removal

      Read this article at

          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.


          The objective of this study was to compare, using in vitro quantitative microbiology, the ability of two commercially available peritoneal dialysis solution delivery systems to prevent and remove, via convective fluid flow, intralumenal fluid path bacterial contamination. The two systems (A and B) differed in both the configuration of their flow control, or Y-junction and the method of fluid flow control and also in the design of their Luer tubing connectors. System A had a tubing type Y-junction that requires clamps to control fluid flow and uses a connector with a male Luer that is deeply recessed within a shroud. System B has a dial-type rigid Y-junction with in-line flow control and a connector with a male Luer that is shrouded but not recessed. System A connectors allowed significantly (p < 0.0001) fewer bacteria to be transferred into the fluid path than System B after simulated touch contamination. Also, when an equivalent number of bacteria were deliberately placed into the fluid paths of both systems, System A was more effective in removal of the bacterial contamination by convective fluid flow than System B (p < 0.0001), resulting in fewer organisms infused into the simulated peritoneum. Specific design features of System A, such as a recessed male Luer, and a Y-junction fluid flow path with low turbulence were likely explanations for its superior results. This study emphasizes the importance of connector and fluid path flow design in the aseptic performance of peritoneal dialysis delivery systems.

          Related collections

          Most cited references 1

          • Record: found
          • Abstract: found
          • Article: found

          Importance of Product Design on Effective Bacterial Removal by Fluid Convection in Y Set and Twinbag Systems

          The goal of this study was to quantitatively compare in vitro the ability of four commercially available peritoneal dialysis solution system designs to prevent the infusion of the most common accidental touch and airborne bacterial contaminant, Staphylococcus epidermidis , into the peritoneum using a total system evaluation approach. This approach took into consideration the number of system openings to the environment during an exchange combined with each system’s convective flushing characteristics. A Y set and a Twinbag system utilizing either an antimicrobial cap or a snap disconnect design for disconnection at the end of the solution exchange procedure were selected for study. The lowest peritoneal bacterial recovery count was seen with the antimicrobial cap system Twinbag, being significantly lower than any of the other systems tested (p < 0.0001). The highest bacterial recovery count occurred in the snap disconnect Y system, being significantly higher than any of the other products tested (p < 0.0001). Both the antimicrobial cap systems permitted infusion of fewer bacteria than the snap disconnect systems, despite being inoculated with larger numbers of bacteria to account for a potential additional opening of the system, during the disconnect procedure. This evaluation emphasizes the importance of fluid path flow design in the overall safety performance of peritoneal dialysis systems.

            Author and article information

            Blood Purif
            Blood Purification
            S. Karger AG
            08 December 2000
            : 19
            : 1
            : 62-67
            Scientific Affairs, Renal Division, Baxter Healthcare, McGaw Park, Ill., USA
            14480 Blood Purif 2001;19:62–67
            © 2001 S. Karger AG, Basel

            Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher. Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug. Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.

            Page count
            Figures: 2, Tables: 3, References: 21, Pages: 6
            Self URI (application/pdf):
            Technical Report

            Cardiovascular Medicine, Nephrology

            Microbial removal, Touch contamination, Twinbag


            Comment on this article