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      Clinical Application of Two Novel Rapid Bedside Tests for the Detection of Cardiac Troponin T and Creatine Kinase-MB Mass/Myoglobin in Whole Blood in Acute Myocardial Infarction

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          Abstract

          The objective of this study was to determine whether two novel rapid bedside assays for whole-blood detection of cardiac troponin T and creatine kinase (CK)-MB mass/myoglobin could rule out or rule in acute myocardial infarction in patients with acute chest pain. Ninety-two patients with chest pain <12 h prior to admission were investigated. No difference in the cumulative sensitivity of the TropT test and the CARDIAC STATus test (CK-MB mass and myoglobin in combination) was found 6 h after admission (94 vs. 97%). The cumulative positive predictive value of the TropT test and CARDIAC STATus test 6 h after admission was 97 and 76%, respectively. The negative predictive value was 97% for the TropT test and 98% for the CARDIAC STATus test at this time point. Our data show that the rapid assays provide diagnostic as well as prognostic information shortly after admission.

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          Cardiac troponin T levels for risk stratification in acute myocardial ischemia. GUSTO IIA Investigators.

          Robert H. Christenson, Neal Kleiman, Bradi B. Granger … (1996)
          The prognosis of patients hospitalized with acute myocardial ischemia is quite variable. We examined the value of serum levels of cardiac troponin T, serum creatine kinase MB (CK-MB) levels, and electrocardiographic abnormalities for risk stratification in patients with acute myocardial ischemia. We studied 855 patients within 12 hours of the onset of symptoms. Cardiac troponin T levels, CK-MB levels, and electrocardiograms were analyzed in a blinded fashion at the core laboratory. We used logistic regression to assess the usefulness of baseline levels of cardiac troponin T and CK-MB and the electrocardiographic category assigned at admission-ST-segment elevation, ST-segment depression, T-wave inversion, or the presence of confounding factors that impair the detection of ischemia (bundle-branch block and paced rhythms)-in predicting outcome. On admission, 289 of 801 patients with base-line serum samples had elevated troponin T levels (> 0.1 ng per milliliter). Mortality within 30 days was significantly higher in these patients than in patients with lower levels of troponin T (11.8 percent vs. 3.9 percent, P < 0.001). The troponin T level was the variable most strongly related to 30-day mortality (chi-square = 21, P < 0.001), followed by the electrocardiographic category (chi-square = 14, P = 0.003) and the CK-MB level (chi-square = 11, P = 0.004). Troponin T levels remained significantly predictive of 30-day mortality in a model that contained the electrocardiographic categories and CK-MB levels (chi-square = 9.2, P = 0.027). The cardiac troponin T level is a powerful, independent risk marker in patients who present with acute myocardial ischemia. It allows further stratification of risk when combined with standard measures such as electrocardiography and the CK-MB level.
          Article 0 comments Cited 83 times – based on 0 reviews     Review now
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            Electrocardiographic and clinical criteria for recognition of acute myocardial infarction based on analysis of 3,697 patients.

            Robert E. Rude, W.Kenneth Poole, James Muller … (1983)
            Over a 34.5-month period, all admissions to 5 university hospital coronary care units were screened for eligibility for the Multicenter Investigation of the Limitation of Infarct Size (MILIS), an ongoing study of the effects of hyaluronidase, propranolol and placebo on myocardial infarct (MI) size. Of 3,697 patients with greater than or equal to 30 minutes of discomfort that was thought to reflect myocardial ischemia who were assessed for the presence or absence of certain electrocardiographic abnormalities at the time of hospital admission, the electrocardiogram was considered predictive of acute MI if greater than or equal to 1 of the following abnormalities was present: new or presumably new Q waves (greater than or equal to 30 ms wide and 0.20 mV deep) in at least 2 of the 3 diaphragmatic leads (II, III, aVF), or in at least 2 of the 6 precordial leads (V1 to V6), or in I and aVL; new or presumably new ST-segment elevation or depression of greater than or equal to 0.10 mV in 1 of the same lead combinations; or complete left bundle branch block. In the screened population, the diagnostic sensitivity of the electrocardiographic criteria was 81%, whereas the overall infarct rate in the total population screened was 49%. The diagnostic specificity of these entry criteria was 69% and the predictive value 72%.(ABSTRACT TRUNCATED AT 250 WORDS)
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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.

              Bertil Lindahl, Per Venge, Lars Wallentin (1997)
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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: 1998
                Publication date (Print): March 1998
                Publication date (Electronic): 16 March 1998
                Volume: 89
                Issue: 3
                Pages: 222-228
                Affiliations
                Department of Medicine and Cardiology, Aarhus University Hospital, Aarhus, Denmark
                Article
                Publisher ID: 6791 Other ID: Cardiology 1998;89:222–228
                DOI: 10.1159/000006791
                PubMed ID: 9570438
                SO-VID: f9c7b1c2-359a-46a5-a829-f18f9f2fee63
                Copyright © © 1998 S. Karger AG, Basel
                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
                Page count
                Figures: 3, Tables: 2, References: 24, Pages: 7
                Categories
                Subject: Coronary Care

                ScienceOpen disciplines: General medicine,Neurology,Cardiovascular Medicine,Internal medicine,Nephrology
                Keywords: Acute myocardial infarction,Troponin T,Whole-blood testing,Cardiac enzymes,Creatine kinase MB,Prognosis,Myoglobin
                Data availability:
                ScienceOpen disciplines: General medicine, Neurology, Cardiovascular Medicine, Internal medicine, Nephrology
                Keywords: Acute myocardial infarction, Troponin T, Whole-blood testing, Cardiac enzymes, Creatine kinase MB, Prognosis, Myoglobin

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