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Badertscher P, Boeddinghaus J, Nestelberger T, Twerenbold R, Wildi K, Sabti Z, Puelacher C, Rubini Giménez M, Pfäffli J, Flores D, du Fay de Lavallaz J, Miró Ò, Martin-Sanchez FJ, Morawiec B, Lohrmann J, Buser A, Keller DI, Geigy N, Reichlin T, Mueller C, Cupa J, Schumacher L, Grimm K, Kozhuharov N, Shrestha S, Rentsch K, López B, Yañez-Palma MC, Iglesias S, Kawecki D, Ganovská E, Osswald S. Effect of Acute Coronary Syndrome Probability on Diagnostic and Prognostic Performance of High-Sensitivity Cardiac Troponin. Clin Chem 2018; 64:515-525. [DOI: 10.1373/clinchem.2017.279513] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 12/20/2017] [Indexed: 11/06/2022]
Abstract
Abstract
BACKGROUND
There is concern that high-sensitivity cardiac troponin (hs-cTn) may have low diagnostic accuracy in patients with low acute coronary syndrome (ACS) probability.
METHODS
We prospectively stratified patients presenting with acute chest discomfort to the emergency department (ED) into 3 groups according to their probability for ACS as assessed by the treating ED physician using a visual analog scale: ≤10%, 11% to 79%, and ≥80%, reviewing all information available at 90 min. hs-cTnT and hs-cTnI concentrations were determined in a blinded fashion. Two independent cardiologists adjudicated the final diagnosis.
RESULTS
Among 3828 patients eligible for analysis, 1189 patients had low (≤10%) probability for ACS. The incidence of non-ST-segment elevation myocardial infarction (NSTEMI) increased from 1.3% to 12.2% and 54.8% in patients with low, intermediate, and high ACS probability, respectively. The positive predictive value of hs-cTnT and hs-cTnI was low in patients with low ACS probability and increased with the incidence of NSTEMI, whereas the diagnostic accuracy of hs-cTnT and hs-cTnI for NSTEMI as quantified by the area under the curve (AUC) was very high and comparable among all 3 strata, e.g., AUC hs-cTnI, 0.96 (95% CI, 0.94–0.97); 0.87 (95% CI, 0.85–0.89); and 0.89 (95% CI, 0.87–0.92), respectively. Findings were validated using bootstrap analysis as an alternative methodology to define ACS probability. Similarly, higher hs-cTnT/I concentrations independently predicted all-cause mortality within 2 years (e.g., hs-cTnT hazard ratio, 1.39; 95% CI, 1.27–1.52), irrespective of ACS probability.
CONCLUSIONS
Diagnostic and prognostic accuracy and utility of hs-cTnT and hs-cTnI remain high in patients with acute chest discomfort and low ACS probability.
ClinicalTrials.gov Identifier: NCT00470587.
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Affiliation(s)
- Patrick Badertscher
- Cardiovascular Research Institute Basel (CRIB) and Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland
- GREAT network, Sao Paulo, Brazil
| | - Jasper Boeddinghaus
- Cardiovascular Research Institute Basel (CRIB) and Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland
- Department of Internal Medicine, University Hospital Basel, University of Basel, Basel, Switzerland
- GREAT network, Sao Paulo, Brazil
| | - Thomas Nestelberger
- Cardiovascular Research Institute Basel (CRIB) and Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland
- Department of Internal Medicine, University Hospital Basel, University of Basel, Basel, Switzerland
- GREAT network, Sao Paulo, Brazil
| | - Raphael Twerenbold
- Cardiovascular Research Institute Basel (CRIB) and Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland
- GREAT network, Sao Paulo, Brazil
- Department of General and Interventional Cardiology, Hamburg University Heart Center, Hamburg, Germany
| | - Karin Wildi
- Cardiovascular Research Institute Basel (CRIB) and Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland
- GREAT network, Sao Paulo, Brazil
| | - Zaid Sabti
- Cardiovascular Research Institute Basel (CRIB) and Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland
- GREAT network, Sao Paulo, Brazil
| | - Christian Puelacher
- Cardiovascular Research Institute Basel (CRIB) and Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland
- GREAT network, Sao Paulo, Brazil
| | - Maria Rubini Giménez
- Cardiovascular Research Institute Basel (CRIB) and Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland
- GREAT network, Sao Paulo, Brazil
| | - Julian Pfäffli
- Cardiovascular Research Institute Basel (CRIB) and Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Dayana Flores
- Cardiovascular Research Institute Basel (CRIB) and Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland
- GREAT network, Sao Paulo, Brazil
| | - Jeanne du Fay de Lavallaz
- Cardiovascular Research Institute Basel (CRIB) and Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland
- GREAT network, Sao Paulo, Brazil
| | - Òscar Miró
- GREAT network, Sao Paulo, Brazil
- Emergency Department, Hospital Clinic, University of Barcelona, Barcelona, Spain
| | | | - Beata Morawiec
- GREAT network, Sao Paulo, Brazil
- 2nd Department of Cardiology, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Katowice, Katowice, Poland
| | - Jens Lohrmann
- Cardiovascular Research Institute Basel (CRIB) and Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Andreas Buser
- Blood Transfusion Centre, Swiss Red Cross, and Department of Hematology, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Dagmar I Keller
- Emergency Department, University Hospital Zurich, Zurich, Switzerland
| | - Nicolas Geigy
- Emergency Department, Kantonsspital, Liestal, Switzerland
| | - Tobias Reichlin
- Cardiovascular Research Institute Basel (CRIB) and Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland
- GREAT network, Sao Paulo, Brazil
| | - Christian Mueller
- Cardiovascular Research Institute Basel (CRIB) and Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland
- GREAT network, Sao Paulo, Brazil
| | - Janosch Cupa
- Cardiovascular Research Institute Basel (CRIB) and Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland
- GREAT network
| | - Lukas Schumacher
- Cardiovascular Research Institute Basel (CRIB) and Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland
- GREAT network
| | - Karin Grimm
- Cardiovascular Research Institute Basel (CRIB) and Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland
- Department of Internal Medicine, University Hospital Basel, University Basel, Basel, Switzerland
- GREAT network
| | - Nikola Kozhuharov
- Cardiovascular Research Institute Basel (CRIB) and Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland
- Department of Internal Medicine, University Hospital Basel, University Basel, Basel, Switzerland
| | - Samyut Shrestha
- Cardiovascular Research Institute Basel (CRIB) and Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland
- GREAT network
| | - Katharina Rentsch
- Laboratory Medicine, University Hospital Basel, University Basel, Basel, Switzerland
| | - Beatriz López
- GREAT network
- Emergency Department, Hospital Clinic, University of Barcelona, Catalonia, Spain
| | - M C Yañez-Palma
- Servicio de Urgencias, Hospital Clínico San Carlos, Madrid, Spain
| | - Sergio Iglesias
- Department of Cardiology, University Hospital Brno, Brno, Czech Republic and Medical Faculty, Masaryk University, Brno, Czech Republic
| | - Damian Kawecki
- GREAT network
- 2nd Department of Cardiology, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Katowice, Katowice, Poland
| | - Eva Ganovská
- GREAT network
- Department of Cardiology, University Hospital Brno, Brno, Czech Republic and Medical Faculty, Masaryk University, Brno, Czech Republic
| | - Stefan Osswald
- Cardiovascular Research Institute Basel (CRIB) and Department of Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland
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Shah ASV, Sandoval Y, Noaman A, Sexter A, Vaswani A, Smith SW, Gibbins M, Griffiths M, Chapman AR, Strachan FE, Anand A, Denvir MA, Adamson PD, D'Souza MS, Gray AJ, McAllister DA, Newby DE, Apple FS, Mills NL. Patient selection for high sensitivity cardiac troponin testing and diagnosis of myocardial infarction: prospective cohort study. BMJ 2017; 359:j4788. [PMID: 29114078 PMCID: PMC5683043 DOI: 10.1136/bmj.j4788] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/11/2017] [Indexed: 12/28/2022]
Abstract
Objective To evaluate how selection of patients for high sensitivity cardiac troponin testing affects the diagnosis of myocardial infarction across different healthcare settings.Design Prospective study of three independent consecutive patient populations presenting to emergency departments.Setting Secondary and tertiary care hospitals in the United Kingdom and United States.Participants High sensitivity cardiac troponin I concentrations were measured in 8500 consecutive patients presenting to emergency departments: unselected patients in the UK (n=1054) and two selected populations of patients in whom troponin testing was requested by the attending clinician in the UK (n=5815) and the US (n=1631). The final diagnosis of type 1 or type 2 myocardial infarction or myocardial injury was independently adjudicated.Main outcome measures Positive predictive value of an elevated cardiac troponin concentration for a diagnosis of type 1 myocardial infarction.Results Cardiac troponin concentrations were elevated in 13.7% (144/1054) of unselected patients, with a prevalence of 1.6% (17/1054) for type 1 myocardial infarction and a positive predictive value of 11.8% (95% confidence interval 7.0% to 18.2%). In selected patients, in whom troponin testing was guided by the attending clinician, the prevalence and positive predictive value were 14.5% (843/5815) and 59.7% (57.0% to 62.2%) in the UK and 4.2% (68/1631) and 16.4% (13.0% to 20.3%) in the US. Across both selected patient populations, the positive predictive value was highest in patients with chest pain, with ischaemia on the electrocardiogram, and with a history of ischaemic heart disease.Conclusions When high sensitivity cardiac troponin testing is performed widely or without previous clinical assessment, elevated troponin concentrations are common and predominantly reflect myocardial injury rather than myocardial infarction. These observations highlight how selection of patients for cardiac troponin testing varies across healthcare settings and markedly influences the positive predictive value for a diagnosis of myocardial infarction.
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Affiliation(s)
- Anoop S V Shah
- BHF Centre for Cardiovascular Science, University of Edinburgh, Edinburgh EH16 4SB, UK
| | - Yader Sandoval
- Division of Cardiology, Hennepin County Medical Center and Minneapolis Heart Institute, Abbott Northwestern Hospital, Minneapolis, MN, USA
| | - Ala Noaman
- BHF Centre for Cardiovascular Science, University of Edinburgh, Edinburgh EH16 4SB, UK
| | - Anne Sexter
- Chronic Disease Research Group of Minneapolis Medical Research Foundation, Hennepin County Medical Center and University of Minnesota, Minneapolis, MN, USA
| | - Amar Vaswani
- BHF Centre for Cardiovascular Science, University of Edinburgh, Edinburgh EH16 4SB, UK
| | - Stephen W Smith
- Department of Emergency Medicine, Hennepin County Medical Center and University of Minnesota, Minneapolis, Minnesota, USA
| | - Mathew Gibbins
- BHF Centre for Cardiovascular Science, University of Edinburgh, Edinburgh EH16 4SB, UK
| | - Megan Griffiths
- BHF Centre for Cardiovascular Science, University of Edinburgh, Edinburgh EH16 4SB, UK
| | - Andrew R Chapman
- BHF Centre for Cardiovascular Science, University of Edinburgh, Edinburgh EH16 4SB, UK
| | - Fiona E Strachan
- BHF Centre for Cardiovascular Science, University of Edinburgh, Edinburgh EH16 4SB, UK
| | - Atul Anand
- BHF Centre for Cardiovascular Science, University of Edinburgh, Edinburgh EH16 4SB, UK
| | - Martin A Denvir
- BHF Centre for Cardiovascular Science, University of Edinburgh, Edinburgh EH16 4SB, UK
| | - Philip D Adamson
- BHF Centre for Cardiovascular Science, University of Edinburgh, Edinburgh EH16 4SB, UK
| | - Michelle S D'Souza
- BHF Centre for Cardiovascular Science, University of Edinburgh, Edinburgh EH16 4SB, UK
| | - Alasdair J Gray
- Emergency Medicine Research Group Edinburgh (EMeRGE) and Department of Emergency Medicine, Royal Infirmary of Edinburgh, Edinburgh, UK
| | | | - David E Newby
- BHF Centre for Cardiovascular Science, University of Edinburgh, Edinburgh EH16 4SB, UK
| | - Fred S Apple
- Department of Laboratory Medicine and Pathology, Hennepin County Medical Center and University of Minnesota, Minneapolis, MN, USA
| | - Nicholas L Mills
- BHF Centre for Cardiovascular Science, University of Edinburgh, Edinburgh EH16 4SB, UK
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