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      Subclinical Thyroid Disorders in Patients with Dilated Cardiomyopathy

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          Abstract

          Severe thyrotoxicosis can cause irreversible congestive heart failure. To investigate the coincidence of subclinical thyroid disorders and idiopathic dilated cardiomyopathy (IDC) we investigated these patients with respect to their morphological and functional thyroid status. Thyroid sonography as well as thyroid hormone levels were measured in all patients. Results: Sixty-one patients (50 male, 11 female) with chronic stable IDC were included. Two out of 61 patients showed completely normal thyroid morphology and function. The other 59 patients showed either morphological or functional abnormalities or both. Of the 53 patients with morphological abnormalities 23 patients (all male) showed diffuse goiter as opposed to 29 nodular enlarged organs (24 male, 5 female). No clinically significant hypothyroidism or thyrotoxicosis was seen. A good correlation was found between the duration of IDC and thyroid volume (r = 0.44; p < 0.001). Two patients died during the study period, 1 from sudden death and 1 from progressive heart failure. Conclusion: Subclinical thyroid disorders are frequently seen in patients with long-standing IDC when they live in an area of chronic iodine deficiency. This can be explained by chronic salt restriction as basic treatment for congestive heart failure. Therefore we conclude that examination of the thyroid gland should be done routinely in patients with IDC, especially when restriction of salt intake is recommended by the treating physician.

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          Author and article information

          Journal
          CRD
          Cardiology
          10.1159/issn.0008-6312
          Cardiology
          S. Karger AG
          0008-6312
          1421-9751
          1997
          1997
          19 November 2008
          : 88
          : 2
          : 156-159
          Affiliations
          aDepartment of Internal Medicine Division of Cardiology, and bDivision of Endocrinology, Karl Franzens University of Graz, Austria
          Article
          177323 Cardiology 1997;88:156–159
          10.1159/000177323
          9096916
          © 1997 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: 4
          Categories
          General Cardiology

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