What does ECG ST-T change mean?
Feb 27, 2023
Source: Cainiu Health
Dr. Wang Xin
Introduction
ECG ST-T changes indicate abnormal ventricular repolarization, generally suggesting myocardial ischemia. ST-T changes are among the most common ECG abnormalities; in comprehensive hospitals, they account for about 50% of all detected abnormal ECGs. The ventricular repolarization process is primarily represented by the ST segment and T wave.
ST-T changes on an electrocardiogram (ECG) indicate abnormal ventricular repolarization, which generally suggests myocardial ischemia.
ST-T changes are among the most common ECG abnormalities. In various abnormal ECG findings detected by general hospitals, ST-T changes account for approximately 50%. The ventricular repolarization process is primarily represented by the ST segment and T wave; any factor affecting ventricular repolarization may lead to abnormal ST-T changes on the ECG.
There are many possible causes of ST-T changes, including cardiac and non-cardiac factors. In most cases, they indicate myocardial injury, such as myocardial ischemia due to conditions like coronary artery disease, acute myocardial infarction, or unstable angina, or myocardial hypertrophy, such as in hypertrophic obstructive cardiomyopathy. If acute conditions are ruled out, further evaluations—such as cardiac enzyme tests, Holter monitoring (ambulatory ECG), and echocardiography—should be performed to determine the underlying cause and guide the next steps in treatment planning.
In daily life, it's important to avoid excessive emotional fluctuations and strenuous physical activity. If any discomfort occurs, prompt medical attention is necessary.
