Abstract

Background: Early diagnosis in ACS is significant to treatment and prognosis. It helps to reduce death and complications. What is the value of IMA concentration for diagnosing non-ST segment elevation acute coronary syndromes. Objective: Studying the IMA concentration in blood serum in patients with non-ST segment elevation acute coronary syndromes; determining sensitivity, specificity and cut off point of IMA in diagnosis of non-ST segment elevation acute coronary syndromes. Subject and Method: 75 patients hospitalized in Hue Central Hospital with breast pang, presenting non-ST segment elevation acute coronary syndromes. Based-on the ESC Guidelines 2015, diagnosis of non-ST segment elevation acute coronary syndromes is made on 37 of those as in a patients group; 38 others are chosen as a controls group. Cross-sectional study with comparison is applied. Result: (i) Concentration of enzymes CK-MB and of hs-TnT in the patients group is higher compared with that in the controls group. Average IMA concentration in patients group is 93.49± 89.56 IU/mL (median: 58.57IU/mL) and higher compared with the controls group which reaches 15.01 ± 9.87 IU/mL (median: 11.735IU/mL). It results in a statistical significance p<0,001. (ii) The cut off point for diagnosing non-ST segment elevation acute coronary syndromes > 28.68IU/mL, reaching a sensitivity at 91.9% and a specificity at 86.8%, AUC = 0.98, 95% CI=0.95-1.00, p<0.001, OR= 74.8, 95% CI =16.54 - 338.38, p<0.001. Conclusion: IMA has high sensitivity and specificity in diagnosis of non-ST segment elevation acute coronary syndromes. Key words: iMA, NSTEMi, Acute coronary syndrome without ST elevation

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