Monitoring time: record the start and end time of monitoring, as well as the time point of abnormal situation during monitoring, such as abnormal heart rate and rhythm. Monitoring parameters: Record the patient's heart rate, heart rhythm, ST segment changes, ECG waveform and other monitoring parameters to understand the patient's ECG activity and illness changes. Analysis of monitoring results: according to the results of monitoring parameters, analyze whether the patient's ECG activity is normal, whether there are abnormal heart rate and rhythm, and the impact on the treatment plan. Nursing measures: record the nursing measures for patients, such as adjusting the position of monitoring instruments, maintaining the quality of leads, assisting patients to adjust their posture and other medical orders; Record the implementation of doctor's orders, such as drug treatment and ECG monitoring frequency. Treatment of abnormal conditions: record abnormal conditions in the monitoring process, such as bradycardia, tachycardia, arrhythmia, etc., as well as treatment measures and effects.