Resting ECG is used to record the heart rhythm and electrical activity of the heart, from which we can learn the basic situation of the heart. However, researches showed that resting ECG recording can completely normal even in patients with more than 70% of the 70% narrowings of their coronary arteries.

In other words, a normal resting ECG does not exclude the presence of coronary artery disease. Resting ECG is just the basic examination.

1. Try to keep in calm and still to faciliate optimal recordings of ECG;

2. Do not take the heavy spirits, food and tobacco 1 hour before the test;

3. Do not exercise before the test