What does ST-T change in dynamic electrocardiogram mean?

Dynamic electrocardiogram ST-T changes usually refer to abnormal alterations in the ST segment and T wave observed during continuous (ambulatory) ECG monitoring.

In a dynamic electrocardiogram, ST-T refers to the waveform following the ST segment that resembles a steamed bun, typically representing ventricular repolarization. Dynamic ECG ST-T changes generally indicate elevation or depression of the ST segment, and abnormalities in the T wave such as biphasic, inverted, flattened, or peaked T waves. These changes may result from physiological factors—for example, in patients going through menopause or in older individuals. During ambulatory ECG monitoring, such ST-T changes may appear as transient abnormalities. However, they may also indicate abnormal ventricular depolarization, suggesting myocardial injury, such as in acute myocardial infarction, coronary artery disease, or hypertrophic obstructive cardiomyopathy.

When ST-T changes are detected on a dynamic electrocardiogram, further evaluation is recommended. Under a physician's guidance, the patient's clinical symptoms, age, sex, and other test results should be considered to rule out potential underlying diseases.