What is an electrocardiogram?

Electrocardiogram (ECG or EKG) is a technique to record the change pattern of electrical activity of the heart in each cardiac cycle from the body surface with an electrocardiograph. The bioelectric changes of the heart itself are reflected to the body surface through the conductive tissues and body fluids around the heart, so that all parts of the body also have regular electrical changes in each cardiac cycle. The ECG curve recorded by placing the measuring electrode on a certain part of the human body surface is the routine ECG recorded in clinic.

Extended data

Electrocardiogram (ECG) is one of the most commonly used examinations in clinic, and it is widely used. The scope of application includes:

1, recording the electrical activity of normal heart.

2. Help diagnose arrhythmia.

3, help diagnose myocardial ischemia, myocardial infarction and location.

4. Diagnose heart enlargement and hypertrophy.

5. Judge the effect of drugs or electrolytes on the heart.

6. Judge the pacing state of artificial heart.

Common sense of electrocardiogram examination:

1, ECG examination is not omnipotent, and some myocardial injuries and functional defects are not always shown. For the preventive examination of the heart, we need to combine a variety of examination items and make a comprehensive analysis in order to make a correct judgment.

2. Under normal circumstances, if you do an electrocardiogram, you should take off your clothes. Not only do you need to undress, but the doctor also needs to touch to check whether there is any abnormality in the breast. Therefore, in order to better facilitate the inspection, women should pay more attention to their own clothes and need to wear clothes that are relatively easy to take off and loose. If women want to reduce discomfort, they can get to know the hospital experts before gynecological examination, and they can choose female experts for examination.

Reference source Baidu Encyclopedia-ECG

Reference source People's Network-What is ECG? Do I need to undress for ECG examination?