Why is there a 24-hour heart monitoring device attached to the body?

The 24-hour cardiac monitoring device, also known as a Holter monitor, is typically used to record a 24-hour dynamic electrocardiogram (ECG) in order to evaluate whether the heart is functioning abnormally. The details are as follows:

Dynamic ECG monitoring can continuously record every heartbeat over a 24-hour period, enabling precise diagnosis of various arrhythmias, such as bradycardia and tachycardia. For patients with known myocardial ischemia or injury, the electrical potential of the myocardial cell membrane tends to be unstable. Additionally, ischemic areas of the heart muscle are prone to forming small re-entry circuits or experiencing conduction delays, which create the substrate for different types of arrhythmias. Conditions requiring prompt intervention include atrial fibrillation, ventricular tachycardia, ventricular fibrillation, and atrioventricular block. Furthermore, during episodes of worsening myocardial ischemia, changes in the T wave and ST segment can be observed on the cardiac monitor, helping to confirm the diagnosis of coronary artery disease and assess its severity.

In summary, wearing a Holter monitor primarily serves to detect any abnormal cardiac activity. If any irregularities are detected during monitoring, it is recommended to seek timely evaluation at a正规 medical facility.