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      Elevated Cardiac Troponin Levels Do Not Predict Adverse Outcomes in Hospitalized Patients without Clinical Manifestations of Acute Coronary Syndromes

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          Abstract

          The prognostic significance of elevated cardiac troponin levels (CTL) in hospitalized patients with no other evidence of myocardial ischemia or injury is largely unknown. Fifty patients (mean age 61 ± 15 years, 15 women) out of 580 consecutive hospitalized patients were selected based on normal CK-MB and at least 3-fold increase of CTL. The medical charts of these patients were reviewed and a 1-year follow-up was performed. The most frequent admission diagnoses were exacerbation of congestive heart failure (22%), stroke (20%) followed by respiratory failure (6%), cirrhosis (6%), gastrointestinal bleeding (6%), end-stage renal disease (4%), atrial fibrillation (4%) and metastatic malignancies (4%). Abnormal CTL prompted a cardiology consult in 48% of patients, an echocardiogram in 44%, myocardial perfusion study in 10% and coronary angiography in 1 patient. Of 21 deaths, only 1 was related to an acute coronary event. The measurement of CTL in patients without definite clinical or electrocardiographic evidence of myocardial ischemia and with a wide spectrum of clinical diagnoses does not predict in-hospital and at 1 year cardiovascular complications and/or cardiac death.

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          Cardiac-specific troponin I levels to predict the risk of mortality in patients with acute coronary syndromes.

          In patients with acute coronary syndromes, it is desirable to identify a sensitive serum marker that is closely related to the degree of myocardial damage, provides prognostic information, and can be measured rapidly. We studied the prognostic value of cardiac troponin I levels in patients with unstable angina or non-Q-wave myocardial infarction. In a multicenter study, blood specimens from 1404 symptomatic patients were analyzed for cardiac troponin I, a serum marker not detected in the blood of healthy persons. The relation between mortality at 42 days and the level of cardiac troponin I in the specimen obtained on enrollment was determined both before and after adjustment for baseline characteristics. The mortality rate at 42 days was significantly higher in the 573 patients with cardiac troponin I levels of at least 0.4 ng per milliliter (21 deaths, or 3.7 percent) than in the 831 patients with cardiac troponin I levels below 0.4 ng per milliliter (8 deaths, or 1.0 percent; P or = 65 years). In patients with acute coronary syndromes, cardiac troponin I levels provide useful prognostic information and permit the early identification of patients with an increased risk of death.
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            Troponin T Identifies Patients With Unstable Coronary Artery Disease Who Benefit From Long-Term Antithrombotic Protection fn1fn1This study was supported by grants from the Swedish Heart and Lung Foundation, Stockholm, Sweden; the Selander’s Foundation, Uppsala, Sweden; the Uppsala County Association Against Heart and Lung Diseases, Uppsala, Sweden; Pharmacia Biosensor AB, Uppsala, Sweden; and Pharmacia AB, Stockholm, Sweden. Boehringer Mannheim Scandinavia AB, Bomma, Sweden provided the troponin T kits.

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              New Serum Markers for Acute Myocardial Infarction

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                Author and article information

                Journal
                CRD
                Cardiology
                10.1159/issn.0008-6312
                Cardiology
                S. Karger AG
                0008-6312
                1421-9751
                2000
                June 2000
                04 July 2000
                : 93
                : 1-2
                : 1-6
                Affiliations
                aUniversity of Texas, Houston Medical School, bHermann Hospital and cBaylor College of Medicine, Houston, Tex., USA
                Article
                6994 Cardiology 2000;93:1–6
                10.1159/000006994
                10894899
                © 2000 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
                Tables: 5, References: 43, Pages: 6
                Categories
                General Cardiology

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