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Stress Testing and Working Capacity in Chagas’ Cardiomyopathy
Abstract
The EKG response to exercise and the working capacity in a group of 70 patients with positive serology for Chagas’ disease has been determined by stress testing on a bicycle-ergometer, in order to establish the usefulness of such a test in the early diagnosis of Chagas’ cardiomyopathy. The exercise EKG provides information which cannot be obtained by other diagnostic procedures, since the stress test can induce or increase ventricular arrhythmia, and is particularly indicated in patients with Chagas’ infection and the incipient forms of Chagas’ cardiomyopathy. Measuring the working capacity is useful in order to establish the degree of functional impairment of each individual patient. After the application of oral digoxin, no significant increase of ventricular extrasystoles following exercise has been observed and the working capacity has improved in the majority of the studied cases with Chagas’ cardiomyopathy.
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169915 Cardiology 1978;63:343–351Copyright: 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.