Clinical Value of Calibrated and Differentiated Displacement Apexcardiography in Ischemic Heart Disease

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Abstract

The calibrated left apexcardiogram with time constant 4 s and its first derivative (dA/dt) has been evaluated in 62 patients with ischemic heart disease and in 50 normal subjects. The normalized positive peak of dA/dt (max dA/dt/Ad), the peak velocity of contractile element shortening (Vpm), the normalized negative peak of dA/dt (min dA/dt/Ar), and the time constant of myocardial relaxation T as well as the time interval from R wave of the electrocardiogram to the peak positive dA/dt (R-max dA/dt) and the total apexcardiograp-hic relaxation time interval divided to mean arterial pressure (TRI) were measured. In patients with ischemic heart disease we found a decrease of max dA/dt/Ad, Vpm, min dA/dt/Ar and an elongation of T, R-max dA/dt, and TRI, when compared to controls.

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Author and article information

Journal

Journal ID (publisher-id): CRD

Journal ID (nlm-ta): Cardiology

Journal ID (doi): 10.1159/issn.0008-6312

Title: Cardiology

Publisher: S. Karger AG

ISSN (Print): 0008-6312

ISSN (Electronic): 1421-9751

Publication date Subscription-year: 1982

Publication date (Print): 1982

Publication date (Electronic): 07 November 2008

Volume: 69

Issue: 6

Pages: 343-352

Affiliations

^aMedical Academy, Higher Medical Institute, Department of Internal Medicine, Varna, Bulgaria; ^bHungarian Institute of Cardiology, Semmelweis University, Department of Cardiology, Budapest, Hungary

Article

Publisher ID: 173525 Other ID: Cardiology 1982;69:343–352

DOI: 10.1159/000173525

PubMed ID: 7159881

SO-VID: d8eb08a8-c0c7-4fb0-afb7-f4cd4aa57508

License:

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.

History

Date received : 27 April 1982

Date accepted : 04 July 1982

Page count

Pages: 10

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