Electrocardiography, commonly known as ECG or EKG (from the German "Elektrokardiogramm"), is a foundational diagnostic tool in cardiology. This non-invasive procedure captures the electrical activity of the heart in the form of a graphic representation known as an electrocardiogram. ECG plays a pivotal role in diagnosing a wide array of cardiac conditions, providing invaluable insights into the heart's rhythm, rate, and overall electrical function. In this article, we will explore the principles behind ECG, its procedure, and its significance in modern healthcare.

Understanding Electrocardiography

At its core, ECG is a painless and rapid test that records the electrical signals generated by the heart as it contracts and relaxes. These signals are crucial for maintaining the synchronized rhythm of the heart's chambers, ensuring effective blood circulation throughout the body. ECGs are instrumental in identifying abnormalities in this electrical system, helping healthcare professionals diagnose and manage various cardiac conditions.