Salt and Hypertension in End-Stage Renal Disease

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Abstract

Salt and fluid overload play an important role in the pathogenesis of hypertension in patients with end-stage renal disease. However, in the individual patient, the relation between salt loading and blood pressure response is variable and appears to be influenced by various neurohumoral regulatory mechanisms. This may also have implications for the pathogenesis of structural cardiovascular abnormalities in patients with end-stage renal disease.

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Blood Pressure Control and Hemodynamic Changes in Patients on Long Time Dialysis Treatment

Antinus J. Luik, Bernard Charra, Krassimir Katzarski … (1998)

In dialysis patients blood pressure can be well controlled with long dialysis (3 times a week for 8 h) in contrast to a more common short dialysis regime (3 times a week for 4 h). We studied whether the good blood pressure control in patients on long dialysis as compared to patients on short dialysis was associated with a decrease in extracellular fluid volume. Two-day interdialytic ambulatory blood pressure monitoring was performed in 26 non-diabetic patients on long dialysis, in 22 patients on short dialysis, matched for the years they were on dialysis treatment, and during 24 h in 19 healthy volunteers. After full equilibration, 24 h after dialysis, echography of the inferior caval vein was performed to determine fluid state. Cardiac dimensions and stroke index were measured by echocardiography. A blood sample was drawn for the determination of electrolytes and vasoactive hormones. 73% of the patients on short dialysis were using antihypertensive medication in contrast to none of the patients on long dialysis. However, blood pressure was significantly lower in patients on long dialysis (115 ± 21/67 ± 11 mm Hg) when compared to patients on short dialysis (143 ± 26/81 ± 16 mm Hg). Indexed caval vein diameter, left ventricular diameter index, and atrial natriuretic peptide were not significantly different in patients on long dialysis compared to patients on short dialysis. Also the cardiac index was comparable in patients on long and short dialysis. However, the total peripheral resistance index was significantly lower in patients on long dialysis compared to the patients on short dialysis and normal controls. The left ventricular mass index was increased in both patients on long and short dialysis compared to controls. We conclude that patients on long dialysis have adequate blood pressure control that seems mainly to be caused by a low total peripheral resistance. These data also suggest that factors other than a lower fluid state contribute to the good blood pressure control in patients on long dialysis.

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Author and article information

Journal

Journal ID (publisher-id): BPU

Journal ID (nlm-ta): Blood Purif

Journal ID (doi): 10.1159/issn.0253-5068

Title: Blood Purification

Publisher: S. Karger AG

ISSN (Print): 0253-5068

ISSN (Electronic): 1421-9735

Publication date Subscription-year: 1998

Publication date (Print): December 1998

Publication date (Electronic): 14 May 1999

Volume: 16

Issue: 6

Pages: 301-311

Affiliations

Department of ^a Internal Medicine, University Hospital, Maastricht, and ^b St. Maartensgasthuis, Venlo, The Netherlands

Article

Publisher ID: 14349 Other ID: Blood Purif 1998;16:301–311

DOI: 10.1159/000014349

PubMed ID: 10343076

SO-VID: 59d5221e-99da-437d-974a-e90ff8bdfdf1

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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.

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