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Abstract
This article provides an insightful overview of the revolutionary diagnostic tool known as the Electrocardiogram (ECG) and its profound significance in the realm of cardiology. ECG, through its ability to record and interpret the heart's electrical signals, offers a pivotal means of early detection for various cardiac conditions, including heart diseases, heart attacks, and arrhythmias. To comprehend the ECG's functionality, it is crucial to grasp the fundamental workings of the heart as an electrically driven pump with rhythmic contractions and relaxations culminating in the phenomenon of a heartbeat. The heart's four chambers, the auricles and ventricles, contribute to the intricate process, which this article elaborates upon by delineating the phases integral to a heartbeat.
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