Electrocardiogram (ECG)

Procedure Overview

Electrocardiogram (ECG) at Gangnam Heartscan Healthcare Center is a foundational resting 12-lead cardiac screening test that records the electrical activity of the heart. By measuring electrical impulses across multiple anatomical leads, the resting ECG identifies rhythm disturbances, conduction delays, chamber enlargement, and ischemic waveform patterns associated with coronary artery disease.

Clinical Indications

• Routine baseline screening for cardiac arrhythmias and conduction blocks
• Initial evaluation of palpitations, dizziness, chest tightness, or shortness of breath
• Screening for ischemic changes related to coronary artery disease
• Ongoing cardiovascular monitoring in patients with hypertension, diabetes, or known cardiac history

How the Screening Works

1. Electrode Placement: Soft adhesive sensor electrodes are placed on the chest wall, wrists, and ankles while the patient rests supine.
2. Resting Electrical Recording: Over several seconds of quiet breathing, the system records 12 simultaneous electrical waveforms of the cardiac cycle.
3. Clinical Review: Physicians evaluate heart rate, rhythm regularity, PR/QRS/QT intervals, and ST-segment morphology.

Preparation & Precautions

• No fasting or special dietary preparation is required.
• Avoid strenuous physical exercise immediately before the test so that heart rate returns to a true resting baseline.
• Avoid applying oily body lotions to the chest or wrists on the morning of the screening to ensure clean electrode contact.