The HEART Score (History, ECG, Age, Risk factors, and Troponin) is a risk stratification tool used specifically in emergency departments to evaluate patients with chest pain. Its purpose is to predict the short-term risk (usually within 6 weeks) of major adverse cardiac events (MACE), such as myocardial infarction or cardiac death. The score assigns points to five components: History (level of suspicion), Electrocardiogram (ECG), Age, Risk factors for cardiovascular disease (such as diabetes, smoking, hypertension), and Troponin (initial cardiac biomarker level). A low score helps identify low-risk patients who may be considered for early discharge, while a high score indicates the need for admission and more aggressive management.