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      Preoperative Silent Myocardial Ischemia Has It Prognostic Significance?

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          Abstract

          We studied the prognostic significance of preoperative silent myocardial ischemia in patients undergoing coronary artery bypass grafting (CABG). Nonfatal and fatal perioperative myocardial infarction were regarded as prognostically important endpoints. Ninety-five patients (9 women) with stable-effort angina pectoris were studied during their hospital stay in the surgery ward before CABG. Silent ischemia was detected using Holter monitoring; all patients had Holter monitoring 76 ± 9 h before surgery using Marguette Laser Holter and Cardiodata Prodigy systems. Two-channel electrocardiographic recordings were used which included CM<sub>5</sub> and a modified inferior lead. Effort was taken to avoid leads with pathological Q waves and resting ST segment abnormalities. The mean duration of the monitoring was 27.9 ± 11.3 h. Three patients (3.2%) had angina pectoris during these observations, 1 of them with significant ST depression. Silent ST depression was found in 12 patients (12.6%). Twelve patients (12.6%) had perioperative myocardial infarction. Perioperative myocardial infarction was more common in patients with silent ischemia: 4/12 vs. 8/83; χ<sup>2</sup> = 4.48955, p = 0.0341. Our results suggest that Holter monitoring identifies a group of patients with a higher probability of perioperative myocardial infarction. In the future, it may be possible to study different methods to prevent this surgical complication.

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          Author and article information

          Journal
          CRD
          Cardiology
          10.1159/issn.0008-6312
          Cardiology
          S. Karger AG
          0008-6312
          1421-9751
          1991
          1991
          12 November 2008
          : 78
          : 2
          : 95-98
          Affiliations
          aJános Municipal Hospital III, Internal Department and Cardiology; Hungarian Institute of Cardiology, Department of bCardiology and cSurgery, Budapest, Hungary
          Article
          174772 Cardiology 1991;78:95–98
          10.1159/000174772
          2070374
          © 1991 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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