Precautions for using ECG to record the condition
The following should be noted when recording an ECG:
① In order to prevent the electrocardiogram artifact caused by muscle tremor, the patient must lie down and relax the whole body
②Connect the limb lead electrodes and wires, and make sure the connection is correct
③ Mark the electrocardiograph 1mV
④ Record 6 standard limb lead ECG
⑤ Record 6 precordial lead ECG
⑥ Record 3 or 4 cycles per lead, and the recording time should be appropriately extended in case of arrhythmia.