{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T16:02:44Z","timestamp":1791475364925,"version":"4.3.4"},"reference-count":53,"publisher":"Texas Heart Institute Journal","issue":"6","license":[{"start":{"date-parts":[[2023,12,18]],"date-time":"2023-12-18T00:00:00Z","timestamp":1702857600000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2023,12,18]]},"abstract":"<jats:title>Abstract<\/jats:title>\n        <jats:sec>\n          <jats:title>Background:<\/jats:title>\n          <jats:p>High-sensitivity troponin I, cardiac form (hs-cTnI) accelerates the assessment of acute coronary syndrome. Little has been documented about its performance, how it relates to different types of myocardial injury, and its impact on morbidity and mortality. This study sought to expand understanding of hs-cTnI by characterizing types of myocardial injury, the impact of comorbidities, and 30-day outcomes.<\/jats:p>\n        <\/jats:sec>\n        <jats:sec>\n          <jats:title>Methods:<\/jats:title>\n          <jats:p>The study retrospectively evaluated 1,975 patients with hs-cTnI levels obtained in the emergency department or inpatient setting from June to September 2020. Troponin was considered elevated if it was higher than the 99th percentile for either sex. Charts were reviewed to determine the presence of myocardial injury. Troponin elevation was adjusted for demographics, comorbidities, and kidney dysfunction. Thirty-day mortality and readmission rates were calculated.<\/jats:p>\n        <\/jats:sec>\n        <jats:sec>\n          <jats:title>Results:<\/jats:title>\n          <jats:p>Of 1,975 patients, 468 (24%) had elevated hs-cTnI, and 330 (17%) had at least 1 type of myocardial injury, type 2 myocardial infarction being the most frequent. Sensitivity and specificity using the 99th percentile as a cutoff were 99% and 92%, respectively. The average maximum hs-cTnI level was significantly higher for type 1 myocardial infarction (<jats:italic>P<\/jats:italic> &lt; .001). Being male, Black, non-Hispanic, and a hospital inpatient were all associated with higher initial and peak hs-cTnI levels (<jats:italic>P<\/jats:italic> &lt; .001). Elevated hs-cTnI level, age, heart disease, kidney dysfunction, and inpatient status were predictive of 30-day mortality on multivariate analysis.<\/jats:p>\n        <\/jats:sec>\n        <jats:sec>\n          <jats:title>Conclusion:<\/jats:title>\n          <jats:p>Elevated hs-cTnI levels in emergency department and inpatient settings occurs most commonly because of type 2 myocardial infarction. Maximum hs-cTnI level is associated with the patient's particular type of myocardial injury, certain demographics, and cardiovascular comorbidities, and it may be a predictor of 30-day outcomes.<\/jats:p>\n        <\/jats:sec>","DOI":"10.14503\/thij-23-8108","type":"journal-article","created":{"date-parts":[[2023,12,20]],"date-time":"2023-12-20T06:34:25Z","timestamp":1703054065000},"source":"Crossref","is-referenced-by-count":4,"title":["Characterization of Myocardial Injury With High-Sensitivity Troponin"],"prefix":"10.14503","volume":"50","author":[{"given":"Sant","family":"Kumar","sequence":"first","affiliation":[{"name":"Department of Internal Medicine, MedStar Georgetown University Hospital, Washington, DC"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nayrana","family":"Griffith","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine, MedStar Georgetown University Hospital, Washington, DC"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dylan","family":"Walter","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine, MedStar Georgetown University Hospital, Washington, DC"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael","family":"Swett","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine, MedStar Georgetown University Hospital, Washington, DC"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Venkatesh","family":"Raman","sequence":"additional","affiliation":[{"name":"Department of Cardiology, US Department of Veterans Affair Medical Center, Washington, DC"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jose D.","family":"Vargas","sequence":"additional","affiliation":[{"name":"Department of Cardiology, US Department of Veterans Affair Medical Center, Washington, DC"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Brototo","family":"Deb","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine, MedStar Washington Hospital Center, Washington, DC"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiling","family":"Chou","sequence":"additional","affiliation":[{"name":"MedStar Health Research Institute, Hyattsville, Maryland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ayah","family":"Arafat","sequence":"additional","affiliation":[{"name":"MedStar Health Research Institute, Hyattsville, Maryland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Monvadi B.","family":"Srichai","sequence":"additional","affiliation":[{"name":"Department of Cardiology, MedStar Georgetown University Hospital, Washington, DC"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"5628","reference":[{"issue":"7","key":"i1526-6702-50-6-e238108-b1","series-title":"Clin Chem","first-page":"1303","article-title":"A new season for cardiac troponin assays: it's time to keep a scorecard","volume":"55","author":"Apple\n              FS","year":"2009","unstructured":"Apple\n              FS\n            \n          . 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