[Echocardiography and Biochemical Examination in the Treatment of Ischemic Heart Disease].

The importance of echocardiography is generally known for acute coronary syndrome. However, assessing cardiac biomarker elevation is important together with echocardiography as poor images are obtained in some cases and patients may show unstable angina or angina on effort without asynergy. We examined the usefulness of high sensitive troponin I (hs-cTnI) in 60 patients from October 2014. We performed hs-cTnI and echocardiography in 10 cases (acute myocardial infarction: 8, unstable angina: 1, angina on effort: 1) among those patients. In the 8 acute myocardial infarction cases, asynergy was noted in all cases on echocardiography, but CK, CK-MB, and H-FABP cardiac biomarkers showed mixed negativity and positivity. Also, the unstable angina and angina on effort did not show asynergy but hs-cTnI was positive, the case of unstable angina showed elevation over time, but the case of angina on effort did not show elevation with time. We suggest that echocardiography and hs-cTnI are useful for acute myocardial infarction, although care may be necessary when assessing ACS patients with no detected asynergy in echocardiographs or non-ACS patients with acutely elevated hs-cTnI). In addition, it was suggested that confirmation of a change over time of hs-cTnI is necessary in angina patients.