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      Circulating Ionized and Total Magnesium in End-Stage Kidney Disease

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          Abstract

          Background: Circulating magnesium exists in the ionized state and in the undissociated form, either bound to albumin, or complexed to various anions. Until recently, only the measurement of total plasma magnesium has been possible. Now circulating ionized magnesium can be assessed as well. Methods: Total and ionized plasma magnesium were determined in 43 patients on maintenance hemodialysis (dialysate composition: calcium 1.75 mmol/l, magnesium 0.75 mmol/l) before a dialysis session and in a group of 23 healthy subjects. Results: The total (1.16 [1.03–1.31] versus 0.81 [0.78–0.89] mmol/l; median and interquartile range) and the ionized (0.71 [0.66–0.78] versus 0.54 [0.53–0.59] mmol/l) plasma magnesium levels were significantly higher (p < 0.01) and the ionized plasma magnesium fraction lower (0.61 [0.58–0.65] versus 0.67 [0.64–0.70]; p < 0.02) in patients than in controls. Conclusion: The determination of circulating ionized magnesium using selective electrodes is an attractive method to evaluate extracellular magnesium in kidney disease.

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          The physicochemical state and renal handling of divalent ions in chronic renal failure.

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            Author and article information

            Journal
            NEF
            Nephron
            10.1159/issn.1660-8151
            Nephron
            S. Karger AG
            1660-8151
            2235-3186
            1998
            July 1998
            22 June 1998
            : 79
            : 3
            : 288-292
            Affiliations
            a Division of Pediatric Nephrology, Department of Pediatrics, b Division of Nephrology, Department of Internal Medicine, c Department of Clinical Chemistry, University of Bern, Switzerland
            Article
            45051 Nephron 1998;79:288–292
            10.1159/000045051
            9678428
            © 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
            Pages: 5
            Product
            Self URI (application/pdf): https://www.karger.com/Article/Pdf/45051
            Categories
            Original Paper

            Cardiovascular Medicine, Nephrology

            Calcium, Hemodialysis, Kidney failure, chronic, Magnesium

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