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      Effect of Sustained Release Isosorbide Dinitrate on Exercise Performance

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          Abstract

          The duration of action and hemodynamic mechanisms of isosorbide dinitrate in a sustained release formula (ISDSR) were examined over a 24-hour period. 20 patients with effort angina pectoris were divided randomly into two groups, one group received a single dose of 40 mg ISDSR (at 07.30 h) and the other, two doses of 40 mg ISDSR (at 07.30 and 13.30 h). Every patient had four exercise tests on the first (placebo) day and second (ISDSR) day and a single test on the third (placebo) day. Effort tolerance was improved significantly (p < 0.05) with ISDSR and this lasted for more than 10 h. The double product was unchanged when placebo was compared to ISDSR. Improvement was achieved by a decrease in blood pressure and an increase in heart rate. There were no signs of increased ischemia (ST segment depression) with the prolongation of exercise time. The antianginal and hemodynamic effects of ISDSR were more pronounced in the patients who received two doses of ISDSR. Thus, ISDSR improved effort tolerance for a prolonged period by inducing a sustained decrease of blood pressure and increase in heart rate in patients with effort-induced angina pectoris.

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          Author and article information

          Journal
          CRD
          Cardiology
          10.1159/issn.0008-6312
          Cardiology
          S. Karger AG
          0008-6312
          1421-9751
          1985
          1985
          11 November 2008
          : 72
          : 3
          : 123-128
          Affiliations
          Department of Cardiology, Hadassah-Hebrew University Hospital, Jerusalem, Israel
          Article
          173852 Cardiology 1985;72:123–128
          10.1159/000173852
          3995516
          © 1985 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
          Original Paper

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