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Maayah M, Grubman S, Allen S, Ye Z, Park DY, Vemmou E, Gokhan I, Sun WW, Possick S, Kwan JM, Gandhi PU, Hu JR. Clinical Interpretation of Serum Troponin in the Era of High-Sensitivity Testing. Diagnostics (Basel) 2024; 14:503. [PMID: 38472975 DOI: 10.3390/diagnostics14050503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Revised: 02/03/2024] [Accepted: 02/05/2024] [Indexed: 03/14/2024] Open
Abstract
Cardiac troponin (Tn) plays a central role in the evaluation of patients with angina presenting with acute coronary syndrome. The advent of high-sensitivity assays has improved the analytic sensitivity and precision of serum Tn measurement, but this advancement has come at the cost of poorer specificity. The role of clinical judgment is of heightened importance because, more so than ever, the interpretation of serum Tn elevation hinges on the careful integration of findings from electrocardiographic, echocardiographic, physical exam, interview, and other imaging and laboratory data to formulate a weighted differential diagnosis. A thorough understanding of the epidemiology, mechanisms, and prognostic implications of Tn elevations in each cardiac and non-cardiac etiology allows the clinician to better distinguish between presentations of myocardial ischemia and myocardial injury-an important discernment to make, as the treatment of acute coronary syndrome is vastly different from the workup and management of myocardial injury and should be directed at the underlying cause.
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Affiliation(s)
- Marah Maayah
- Yale School of Medicine, Yale University, New Haven, CT 06520, USA
| | - Scott Grubman
- Yale School of Medicine, Yale University, New Haven, CT 06520, USA
| | - Stephanie Allen
- Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT 06520, USA
| | - Zachary Ye
- Department of Internal Medicine, Temple University Medical Center, Philadelphia, PA 19140, USA
| | - Dae Yong Park
- Department of Internal Medicine, Cook County Hospital, Chicago, IL 60612, USA
| | - Evangelia Vemmou
- Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT 06520, USA
| | - Ilhan Gokhan
- Yale School of Medicine, Yale University, New Haven, CT 06520, USA
| | - Wendy W Sun
- Department of Emergency Medicine, Yale School of Medicine, Yale University, New Haven, CT 06520, USA
| | - Stephen Possick
- Section of Cardiovascular Medicine, Yale School of Medicine, Yale University, New Haven, CT 06520, USA
| | - Jennifer M Kwan
- Section of Cardiovascular Medicine, Yale School of Medicine, Yale University, New Haven, CT 06520, USA
| | - Parul U Gandhi
- Section of Cardiovascular Medicine, Yale School of Medicine, Yale University, New Haven, CT 06520, USA
- Department of Cardiology, Veterans Affairs Connecticut Health Care System, West Haven, CT 06516, USA
| | - Jiun-Ruey Hu
- Section of Cardiovascular Medicine, Yale School of Medicine, Yale University, New Haven, CT 06520, USA
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Kousa O, Addasi Y, Machanahalli Balakrishna A, Pajjuru VSK, Bardwell JK, Walters RW, Ponamgi S, Alla VM. Elevated troponin in patients with acute gastrointestinal bleeding: prevalence, predictors and outcomes. Future Cardiol 2022; 18:709-717. [PMID: 35770979 DOI: 10.2217/fca-2021-0143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Background: Cardiac troponin (cTn) can also be elevated in patients with non-cardiac illnesses. The utility of elevated cTn in patients with acute gastrointestinal bleeding (AGIB) is unclear. Methods: We retrospectively identified all patients admitted with AGIB who had cTn ordered. We assessed the prevalence, predictors and mortality. Results: A total of 172 patients with AGIB were included in the study, of whom 17% had abnormal cTn. Predictors of elevated cTn were advanced age, lower BMI, coronary artery disease and chronic kidney disease. The abnormal cTn group had more cardiac consultation and procedures and longer length of stay. However, there was no difference in mortality between the two groups. Conclusion: Elevated cTn in patients with AGIB was associated with more cardiology consultation and downstream cardiac testing, greater delay to endoscopic evaluation and longer length of stay, without significantly affecting the mortality.
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Affiliation(s)
- Omar Kousa
- Department of Cardiology, Creighton University School of Medicine, Omaha, Nebraska, NE 68124, USA
| | - Yazan Addasi
- Department of Internal Medicine, Creighton UniversitySchool of Medicine, Omaha, Nebraska, NE 68124, USA
| | | | | | - Josiah K Bardwell
- Department of Internal Medicine, Creighton UniversitySchool of Medicine, Omaha, Nebraska, NE 68124, USA
| | - Ryan W Walters
- Department of Clinical Research, Creighton University School of Medicine, Omaha, Nebraska, NE 68124, USA
| | - Shiva Ponamgi
- Department of Cardiology, Creighton University School of Medicine, Omaha, Nebraska, NE 68124, USA
| | - Venkata Mahesh Alla
- Department of Cardiology, Creighton University School of Medicine, Omaha, Nebraska, NE 68124, USA
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Safety of Endoscopy for Hospitalized Patients With Acute Myocardial Infarction: A National Analysis. Am J Gastroenterol 2020; 115:376-380. [PMID: 32022723 DOI: 10.14309/ajg.0000000000000528] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
INTRODUCTION Patients hospitalized with myocardial infarction (MI) are at risk of gastrointestinal bleeding because of the need for antiplatelet agents and/or anticoagulation. The data regarding the safety of endoscopy after MI are limited. This study sought to assess mortality rates of patients hospitalized with acute MI who require esophagogastroduodenoscopy or colonoscopy using the National Inpatient Sample (NIS) database. METHODS A retrospective cohort analysis of all adult inpatients in the NIS from 2016 admitted for ST-elevation infarction myocardial infarction (STEMI), non-STEMI, or type II non-STEMI was conducted. Data were collected including patient demographics and indication for endoscopy per ICD-10 coding. HCUPnet was used to query NIS to obtain all inpatient mortality. The primary methods included adjusted χ for categorical outcomes, adjusted linear regression for continuous outcomes, and adjusted logistic regression for multivariable analysis. RESULTS A total of 1,281,749 patients were admitted for acute coronary syndrome in 2016, and 55,035 of these patients underwent endoscopy In the multivariable regression analysis, those who underwent a GI procedure (odds ratio [OR] 0.80, P value < 0.002) and angiogram (OR 0.48, P value < 0.001) had lower in-hospital mortality, after adjusting for age, Elixhauser index, need for angiogram, sex, race, and hospital type. Endoscopy postcatheterization was not associated with a difference in mortality compared with preangiogram (OR = 0.84, 95% confidence interval 0.60-1.19). DISCUSSION Patients who underwent endoscopy are sicker and have higher mortality rates than those who do not undergo endoscopy, but after adjusting for comorbidities, mortality is actually lower. This suggests that endoscopy is safe and should be performed when clinically indicated despite recent cardiac ischemia.
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Belley-Cote EP, Whitlock RP, Ulic DV, Honarmand K, Khalifa A, McClure GR, Gibson A, Alshamsi F, D'Aragon F, Rochwerg B, Duan E, Savija N, Karachi T, Lamontagne F, Kavsak P, Cook DJ. The PROTROPIC feasibility study: prognostic value of elevated troponins in critical illness. Can J Anaesth 2019; 66:648-657. [PMID: 31037586 DOI: 10.1007/s12630-019-01375-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 11/22/2018] [Accepted: 11/26/2018] [Indexed: 10/26/2022] Open
Abstract
PURPOSE Elevated cardiac troponin concentrations in people with critical illness are associated with an increased risk of death. We aimed to assess the feasibility of a larger study to ascertain the utility of cardiac troponin as a prognostic tool for mortality in critically ill patients. METHODS Patients admitted to participating intensive care units during the one-month enrolment period were eligible. We excluded cardiac surgical patients and patients who were admitted and either died or were discharged within 12 hr. In enrolled patients, we measured high-sensitivity cardiac troponin I (hs-cTnI) and obtained electrocardiograms to ascertain the incidence of myocardial infarction (MI) and isolated troponin elevation. Our feasibility objectives were to measure recruitment rate, the proportion of patients who consented under a deferred consent model, and time required for data collection and study procedures. RESULTS Over a four-week enrolment period, 280 patients were enrolled using a deferred consent model. We obtained subsequent consent from 81% of patients. Study procedures and data collection required 1.7 hr per participant. Overall, 86 (38%) suffered a MI, 23 (10%) had an isolated hs-cTnI elevation, and 117 (52%) had no hs-cTnI elevation. The crude hospital mortality rate was 10% without an hs-cTnI elevation, 29% with an isolated hs-cTnl elevation (relative risk [RR]) 2.2; 95% confidence interval [CI], 1.0 to 6.0) and 29% with an MI (RR, 2.6; 95% CI, 1.4 to 5.1). CONCLUSION Myocardial injury with elevated hs-cTnI concentrations and MIs occur frequently during critical illness. This pilot study has established the feasibility of conducting a large-scale investigation addressing this issue.
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Affiliation(s)
- Emilie P Belley-Cote
- Department of Medicine, McMaster University, Hamilton, ON, Canada. .,Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada. .,Population Health Research Institute, Hamilton, ON, Canada. .,David Braley Cardiac, Vascular and Stroke Research Institute, 237 Barton St. E., Hamilton, ON, L8L 2X2, Canada.
| | - Richard P Whitlock
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada.,Population Health Research Institute, Hamilton, ON, Canada.,Department of Surgery, McMaster University, Hamilton, ON, Canada
| | - Diana V Ulic
- Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - Kimia Honarmand
- Department of Medicine, Western University, London, ON, Canada
| | - Abubaker Khalifa
- Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - Graham R McClure
- Department of Surgery, McMaster University, Hamilton, ON, Canada
| | - Andrew Gibson
- Department of Medicine, William Osler Health System, Brampton, ON, Canada
| | - Fayez Alshamsi
- Department of Internal Medicine, College of Medicine and Health Sciences, UAE University, Ain, UAE
| | | | - Bram Rochwerg
- Department of Medicine, McMaster University, Hamilton, ON, Canada.,Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada
| | - Erick Duan
- Department of Medicine, McMaster University, Hamilton, ON, Canada.,Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada
| | - Nevena Savija
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada.,Population Health Research Institute, Hamilton, ON, Canada
| | - Tim Karachi
- Department of Medicine, McMaster University, Hamilton, ON, Canada
| | | | - Peter Kavsak
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada
| | - Deborah J Cook
- Department of Medicine, McMaster University, Hamilton, ON, Canada.,Population Health Research Institute, Hamilton, ON, Canada
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