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High-sensitivity cardiac troponin T in prediction and diagnosis of myocardial infarction and long-term mortality after noncardiac surgery
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High-sensitivity cardiac troponin T in prediction and diagnosis of myocardial infarction and long-term mortality after noncardiac surgery
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Journal Article
High-sensitivity cardiac troponin T in prediction and diagnosis of myocardial infarction and long-term mortality after noncardiac surgery
2013
Overview
Perioperative myocardial infarction (MI) is a serious complication after noncardiac surgery. We hypothesized that preoperative cardiac troponin T detected with a novel high-sensitivity (hs-cTnT) assay will identify patients at risk for acute MI and long-term mortality after major noncardiac surgery.
This was a prospective cohort study within the VINO trial (n = 608). Patients had been diagnosed with or had multiple risk factors for coronary artery disease and underwent major noncardiac surgery. Cardiac troponin I (contemporary assay) and troponin T (high-sensitivity assay) and 12-lead electrocardiograms were obtained before and immediately after surgery and on postoperative days 1, 2, and 3.
At baseline before surgery, 599 patients (98.5%) had a detectable hs-cTnT concentration, and 247 (41%) were >14 ng/L (99th percentile). After surgery, 497 patients (82%) had a rise in hs-cTnT (median change in hs-cTnT +2.7 ng/L [interquartile range 0.7-6.8]). During the first 3 postoperative days, there were 9 patients (2.5%) with a preoperative hs-cTnT <14 ng/L with acute MI, compared with 21 patients (8.6%) with a preoperative hs-cTnT >14 ng/L (odds ratio 3.67, 95% CI 1.65-8.15). During long-term follow-up, 80 deaths occurred. The 3-year mortality rate was 11% in patients with a preoperative hs-cTnT concentration <14 ng/L compared with 25% in patients with a preoperative hs-cTnT >14 ng/L (adjusted hazard ratio 2.17, 95% CI 1.19-3.96).
In this cohort of high-risk patients, preoperative hs-cTnT concentrations were significantly associated with postoperative MI and long-term mortality after noncardiac surgery.
Publisher
Mosby, Inc,Elsevier Limited
