What does an electrocardiogram include?
Apr 07, 2023
Source: Cainiu Health
Dr. Tian Hongbo
Introduction
An electrocardiogram (ECG) is a very important test that can assess heart rate, record the heart's rhythm, and detect whether there is myocardial damage. In addition, if a patient experiences symptoms such as chest tightness or palpitations, they can go to the hospital for an ECG examination, which can reveal a great deal of information. Based on the results, active treatment can be pursued under a doctor's guidance.
Generally, an electrocardiogram (ECG) includes evaluating heart rate, recording cardiac rhythm, and checking for myocardial damage, making it a very important diagnostic test. The specific details are as follows:
1. Evaluating Heart Rate
An ECG records the electrical activity of the heart. It primarily assesses heart rate—how fast or slow the heart is beating—and determines whether the heartbeat is too rapid or too slow.
2. Recording Cardiac Rhythm
During an ECG, the regularity of the heartbeat is recorded. For example, it can capture atrial contractions and determine whether the ventricles are contracting normally. It also evaluates whether the electrical signals from the atria to the ventricles are normal or if there are conduction abnormalities, such as signal blockage or dropped beats.
3. Checking for Myocardial Damage
When detecting myocardial injury, the ECG typically identifies changes in the ST-T segment or the presence of pathological Q waves. Elevations or depressions in the ST segment and T-wave inversions may indicate conditions such as myocardial ischemia or coronary artery disease.
In addition, if patients experience symptoms such as chest tightness or palpitations, they should go to the hospital for an ECG examination, which can reveal valuable information. Based on the results, appropriate treatment should be actively pursued under a doctor's guidance.
