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      Assessment of Growth Hormone Secretion: What Are We Looking for Practically?

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          Abstract

          GH is a dominant factor in determining growth during childhood. Hence, the assessment of GH secretion is of major importance in the diagnosis of growth disorders. Since GH is secreted in a pulsatile fashion, a truly accurate production rate can only be calculated by using very frequent or continuous blood sampling over a 24-hour period. Several standard provocative tests have been established to evaluate GH secretory status. They remain the cornerstone in the assessment. Recent data have shown the existence of a wide spectrum of GH secretory disturbances ranging from severe GH deficiency to partial insufficiency and neurosecretory dysfunction. There is no well-defined cut-off point at which a particular child can be regarded as GH insufficient or sufficient for optimal growth. In clinical practice, the assessment of GH secretion starts with the careful analysis of the growth chart and height velocity. Careful clinical examination of the patient is essential for the proper diagnosis, and to exclude diseases influencing GH secretion. Additional biochemical tests may be required for the differential diagnosis. Thus, assessment of GH secretion in children requires auxological, clinical and biochemical data. GH insufficiency is documented by additional testing of pituitary secretory capacity either by standard provocative tests, by studying 24-hour GH profile or by measuring 24-hour production rate. The main goal is to detect those children who will benefit from treatment with hGH. The final assessment might consist in the response of growth velocity to exogenous hGH.

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          Author and article information

          Journal
          HRE
          Horm Res Paediatr
          10.1159/issn.1663-2818
          Hormone Research in Paediatrics
          S. Karger AG
          978-3-8055-5290-5
          978-3-318-01979-7
          1663-2818
          1663-2826
          1990
          1990
          02 December 2008
          : 33
          : Suppl 4
          : 1-6
          Affiliations
          Division of Pediatric and Adolescent Endocrinology, Department of Pediatrics, University of Leuven, Belgium
          Article
          181575 Horm Res 1990;33:1–6
          10.1159/000181575
          2245963
          © 1990 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: 6
          Categories
          The Seville hGH Symposium

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