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      Elimination of Drugs by the New Polyamide Hemofilter FH77H during Various in vitro Conditions

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          Background/Aims: Multiple organ failure alters the dosage of drugs during hemofiltration. To separate factors, we utilized in vitro hemofiltration to investigate different blood flows, protein concentrations and intracellular drug partition with the FH77H polyamide membrane. Methods: One liter of warm heparinized fresh human blood was hemofiltrated in two series: (1) with digoxin, netilmycin, phenobarbital, ceftriaxone and teicoplanin, and (2) with amikacin, theophylline, ceftazidim, phenytoin and vancomycin and, in addition, with cell-free fresh frozen plasma. Results: The increased volumes of distribution of aminoglycosides and theophylline were a combined result of partition into cells and adsorption into the filter membrane. The deviations of drug sieving from predicted values were due to different affinities of the drugs on whole blood binding sites. Conclusion: The in vitro composition of drugs and blood improved the detection of factors that influence drug elimination during hemofiltration. The FH77H polyamide hemofilter facilitates more precise predictions of drug dosages by low adsorption rates to the membrane.

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          Author and article information

          Blood Purif
          Blood Purification
          S. Karger AG
          February 1998
          12 February 1998
          : 16
          : 1
          : 49-56
          Klinikum der Philipps-Universität Marburg, Germany
          14313 Blood Purif 1998;16:49–56
          © 1998 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: 5, Tables: 2, References: 12, Pages: 8
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