Abstract：Electrocardiogram(ECG) is a diagnostic method frequently and easily applied in making preliminary assessment, risk stratification at early phase, screening, and treatment instruction for patients with pectoralgia. ECG changes serve as an important reference for the diagnosis of acute myocardial infarction, which plays an indispensable role in determining the nature of myocardial infarction, judging the diseased region, and evaluating the severity of the disease. However, there lie limits in sensitivity and specificity when ECG is utilized in diagnosing myocardial infarction. Part of myocardial infarction ECGs manifest no change or atypical changes while ECG changes exactly similar to those of myocardial infarction are found in ECGs of healthy people or cases with some other diseases. Therefore, it requires comprehensive analysis in ECG diagnosis of myocardial infarction. This paper briefly depicts ECG changes complicating common diseases, in order not to be confused with myocardial infarction ECG changes.
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2015, Vol. 24 
