Related studies have confirmed that the patient's admission blood sodium, potassium, and chloride levels are negatively correlated with CK-MB, CK, cTnI levels; myocardial infarction area; and Gensini score, and positively correlated with LVEF values, with the decrease of blood sodium, blood potassium, and blood chloride levels, the levels of CK-MB, CK, and cTnI increase; the area of myocardial infarction increases; the Gensini score increases; and the LVEF value decreases [16]. Here, TNNI3 is linked to myocardial infarction.