Cardiac troponins are the preferred biomarkers for diagnosis of myocardial infarction because of their high sensitivity and specificity for myocardial injury. However, acute and chronic conditions distinct from acute coronary syndromes (ACS) commonly lead to small elevations in troponin levels, with few data available regarding management of care for patients with such conditions. Recently developed highly sensitive troponin assays will likely lead to a substantial increase in the proportion of detectable troponin levels attributable to non-ACS conditions. Novel algorithms with highly sensitive assays, incorporating baseline troponin values and changes in values over 1 to 2 hours, may allow rapid exclusion of myocardial infarction and help to address specificity concerns but must be validated in appropriate target populations. Enhanced detection of very low troponin levels with highly sensitive assays has made feasible several potential new indications for troponin testing, including in the ambulatory setting, where assessment for low-level chronic myocardial injury may enhance risk stratification for heart failure and cardiac death.
TnC indicates troponin C; cTnI, cardiac troponin I; cTnT, cardiac troponin T.
This algorithm is based on available literature19,28 but has not been separately validated. ECG indicates electrocardiogram; MI, myocardial infarction.aSee Box 2 for more detail.
Some tools below are only available to our subscribers or users with an online account.
Download citation file:
Web of Science® Times Cited: 20
Customize your page view by dragging & repositioning the boxes below.
More Listings atJAMACareerCenter.com >
Enter your username and email address. We'll send you a link to reset your password.
Enter your username and email address. We'll send instructions on how to reset your password to the email address we have on record.
Athens and Shibboleth are access management services that provide single sign-on to protected resources. They replace the multiple user names and passwords necessary to access subscription-based content with a single user name and password that can be entered once per session. It operates independently of a user's location or IP address. If your institution uses Athens or Shibboleth authentication, please contact your site administrator to receive your user name and password.