What can a 12-lead electrocardiogram (ECG) detect?

Apr 16, 2023 Source: Cainiu Health

Dr. Tian Hongbo

Introduction

When arrhythmias occur, a 12-lead electrocardiogram (ECG) can help accurately diagnose various types of arrhythmias. When conditions such as myocardial ischemia or necrosis are present, a 12-lead ECG can also assist in assessment, providing valuable information for physicians to diagnose diseases. If the ECG shows ST-segment elevation with upward convexity or ST-segment depression, acute myocardial infarction should be suspected and carefully evaluated.

Under normal circumstances, a 12-lead electrocardiogram (ECG) can detect the presence of arrhythmias and assist in the diagnosis of conditions such as myocardial ischemia and acute myocardial infarction. The specific analysis is as follows:

1. Arrhythmias

When arrhythmias occur, a 12-lead ECG can help clearly diagnose various types of arrhythmias, such as tachycardia, premature beats, and atrioventricular block.

2. Myocardial Ischemia

In cases of myocardial ischemia or necrosis, a 12-lead ECG can also be used for assessment. It may reveal ST-segment depression, providing valuable information to assist physicians in diagnosing the condition.

3. Acute Myocardial Infarction

During a 12-lead ECG, if ST-segment elevation with upward convexity or depression is observed, acute myocardial infarction should be suspected. Further evaluation combining cardiac enzymes, troponin levels, and other tests is required for a comprehensive diagnosis.

When experiencing physical discomfort, it is recommended to visit a hospital for appropriate diagnostic evaluations. A professional physician should make the assessment; self-diagnosis should be avoided to prevent delays in treatment.

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