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Original Article

Role of myeloperoxidase in early diagnosis of acute myocardial infarction in patients admitted with chest pain

, , , &
Pages 337-347 | Published online: 09 Jul 2018
 

ABSTRACT

Myeloperoxidase (MPO) is an inflammatory marker, elevated in acute coronary syndromes (ACSs), especially in acute myocardial infarction (AMI) cases. This study aimed to evaluate the diagnostic power of MPO in AMI patients. MPO, creatine kinase (CK) MB, and Troponin I (cTn I) were performed for all study patients. Area under the curves (AUCs) and 95% confidence intervals (CI); P values of baseline levels of MPO for discriminating AMI patients from noncoronary chest pain (NCCP) patients, stable angina (SA) patients, and unstable angina (UA) patients were 0.91, 95% CI: 0.82–0.99; P < 0.0001, 0.87, 95% CI: 0.77–0.98; P < 0.0001, and 0.72, 95% CI: 0.58–0.85; P = 0.002, respectively. For diagnosing AMI from ACS patients, MPO was the most efficient marker than others markers with efficiency 82.5% within 0–6 hr after the onset time of chest pain. A predictive score that depends on a combination of baseline levels of three markers (MPO, CK-MB, and TnI) was correctly discriminated 91% of the AMI patients with high specificity 76%. In conclusion, the use of baseline levels of three biomarkers in combination could confer the information that is required for best available early diagnosis of AMI.

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