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Troponin T as a marker for myocardial ischemia in patients undergoing major noncardiac surgery.

Authors
  • Lee, T H
  • Thomas, E J
  • Ludwig, L E
  • Sacks, D B
  • Johnson, P A
  • Donaldson, M C
  • Cook, E F
  • Pedan, A
  • Kuntz, K M
  • Goldman, L
Type
Published Article
Journal
The American Journal of Cardiology
Publisher
Elsevier
Publication Date
May 15, 1996
Volume
77
Issue
12
Pages
1031–1036
Identifiers
PMID: 8644653
Source
Medline
License
Unknown

Abstract

To assess the diagnostic performance of cardiac troponin T as a marker for myocardial injury in patients undergoing major noncardiac surgery, we prospectively collected preoperative and postoperative clinical data, including measurements for creatine kinase (CK), CK-MB, and troponin T for 1,175 patients undergoing major noncardiac surgery. Acute myocardial infarction was diagnosed in 17 patients (1.4%) by a reviewer who was blinded to troponin T data and who used CK-MB and electrocardiographic criteria to define acute myocardial infarction. Other predischarge major cardiac complications were detected for another 17 patients. Troponin T elevations (>0.1 ng/ml) occurred in 87% of patients with and in 16% of patients without myocardial infarction. Among patients without myocardial infarction, troponin T was elevated in 62% of patients with and in 15% of patients without major cardiac complications. Receiver-operating characteristic analysis indicated that troponin T had a performance for the diagnosis of acute myocardial infarction similar to CK-MB, and a significantly better correlation with other major cardiac complications in patients without definitive infarction. Future research should seek to determine the significance of troponin T elevations in patients without complications.

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