Applications of ECG in Modern Medicine

ECG (electrocardiogram) machines record the electrophysiological activity of the heart and are a fundamental tool in modern medicine for assessing cardiovascular health. With their non-invasive, rapid, and economical characteristics, they play an irreplaceable role in disease screening, emergency monitoring, and remote health management.

1. Clinical Diagnosis and Emergency Cardiac Event Screening: Used to identify arrhythmias (such as atrial fibrillation), conduction blocks, and other abnormalities in cardiac electrical activity. Diagnosis of Myocardial Infarction: A 12-lead ECG is the "gold standard" for the early diagnosis of acute myocardial infarction (STEMI), allowing for rapid localization of the lesion area. Emergency and Surgical Monitoring: Continuous dynamic monitoring in emergency departments, operating rooms, and intensive care units (ICUs) to keep track of patients' vital signs at all times.

2. Dynamic Monitoring and Remote Assessment: Holter monitoring: Records ECGs for 24 hours or even longer, capturing paroxysmal arrhythmias or occult myocardial ischemia. Wearable Devices: Smartwatches and portable patches extend ECG monitoring to the home and daily life, enabling long-term prevention and management of cardiovascular diseases.

3. AI and Big Data Applications: AI-Assisted Diagnosis: Combining deep learning algorithms (such as large-scale ECG models trained on tens of millions of data points), AI can identify minute ECG abnormalities with extremely high accuracy and predict the risk of diseases such as heart failure. Supporting Primary Healthcare: Leveraging cloud platforms and AI technology, it alleviates the shortage of ECG specialists in grassroots and remote areas.

An electrocardiogram (ECG or EKG) is a rapid examination method used to check the heartbeat. An ECG records electrical signals in the heart. The results help diagnose heart attacks and irregular heartbeats (arrhythmias).

ECG machines are available in clinics, hospitals, operating rooms, and ambulances. Some personal devices, such as smartwatches, can also perform simple ECGs.

ECG results can help healthcare teams diagnose:

Irregular heartbeat (i.e., arrhythmia).

A history of heart attack.

The cause of chest pain. For example, it may indicate a blockage or narrowing of a coronary artery.

ECGs can also be used to assess the effectiveness of a pacemaker and heart treatment.

You may need an ECG if you experience:

Chest pain.

Dizziness, lightheadedness, or confusion.

Rapid, skipped, or fluttering heartbeat.

Rapid pulse.

Shortness of breath.

Weakness or fatigue.

Decreased exercise capacity.

There is no risk of electric shock during an electrocardiogram (ECG). The sensors (electrodes) do not generate current.

Some patients may experience a mild rash at the electrode placement site. Some patients may experience discomfort when removing the electrode patch, similar to peeling off a bandage.