An ambulatory electrocardiogram (ECG) is a diagnostic tool that provides continuous monitoring of the heart's electrical activity over an extended period. This portable device, often referred to as a Holter monitor, is designed to be worn by patients during their daily activities, allowing for the detection of irregular heart rhythms and potential cardiac issues that may not be captured in a standard ECG performed in a medical facility. Ambulatory ECG monitoring is particularly valuable for assessing symptoms such as palpitations, dizziness, or unexplained chest pain that may occur intermittently. The data collected from an ambulatory ECG can offer valuable insights into the patient's heart health, aiding healthcare professionals in diagnosing and managing various cardiac conditions. This non-invasive and patient-friendly approach to continuous heart monitoring has become an integral component of modern cardiology, facilitating more comprehensive and accurate assessments of cardiac function in real-world scenarios.