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      Left Ventricular Thrombi: Changes in Size and in Platelet Deposition during Treatment with Indobufen and Ticlopidine

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          Abstract

          This study was designed to evaluate whether indobufen and ticlopidine can induce changes in the size of left ventricular thrombi and variations in the deposition of platelets on thrombus surface. Forty-seven patients with left ventricular thrombosis, who were not treated with antithrombotic drugs, were prospectively evaluated with <sup>111</sup>In-oxine platelet imaging and two-dimensional echocardiography. The first scintigraphic examination was negative in 15 of the 47 patients with left ventricular thrombosis, thus they were excluded from further evaluation. The remaining 32 patients with evidence of labeled platelet deposition on the thrombus were divided into three groups. Group 1 comprises 11 patients treated with different doses of ticlopidine: 6 with 250 mg/day, and 5 with 500 mg/ day. Group 2 comprises 12 patients who received 400 mg/day of indobufen. Group 3 comprises 9 patients who were not treated with antithrombotic drugs. All 32 patients underwent repeated <sup>111</sup>In-oxine platelet imaging and echocardiography 40 ± 11 days after the first examination. During treatment with ticlopidine, deposition of labeled platelets on the thrombus became absent in 2 patients (500 mg/day), and reduced in 5 (2 treated with 250 and 3 with 500 mg/day). A decrease of platelet deposition on the thrombus was also observed in 5 of the 12 patients receiving indobufen and in only 1 of 9 controls. With regard to thrombus dimensions, 1 patient treated with ticlopidine showed a decrease in thrombus size associated with a reduction of the scintigraphic activity. In conclusion, a decrease of the platelet uptake on the thrombus surface, without significant changes in the size, was detected in most patients during treatment with indobufen and ticlopidine. Only during high doses of ticlopidine was a complete break in the deposition of platelets observed.

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          Author and article information

          Journal
          CRD
          Cardiology
          10.1159/issn.0008-6312
          Cardiology
          S. Karger AG
          0008-6312
          1421-9751
          1990
          1990
          12 November 2008
          : 77
          : 4
          : 272-279
          Affiliations
          aDivisione di Cardiologia, bServizio di Medicina Nucleare, cCentro Trasfusionale, Ente Ospedaliero Ospedali Galliera, Genova, Italy
          Article
          174608 Cardiology 1990;77:272–279
          10.1159/000174608
          2073644
          © 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: 8
          Categories
          Original Paper

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