Cardiovascular diseases, particularly coronary artery disease, remain leading causes of mortality globally. Electrocardiography (ECG) serves as a pivotal tool for diagnosing cardiac abnormalities, but conventional monitoring methods often involve discomfort and mobility constraints due to wired connections. This study aims to develop and validate a prototype of a remote ECG monitoring system capable of detecting arrhythmias, enabling continuous monitoring without physical constraints. The system encompasses signal acquisition, processing, and transmission via radio frequency to mobile devices. Leveraging wireless communication standards, the device facilitates remote monitoring in diverse healthcare settings, from intensive care units to home care. The theoretical foundation delves into cardiac structure, heart rate variability, ECG acquisition circuit, and pathologies identifiable through ECG analysis. Detailed discussions cover aspects such as the significance of wireless monitoring in healthcare, instrumentation amplifiers, electrical filtering, ECG signal processing techniques, and pathologies like coronary artery disease, left and right ventricular hypertrophy, myocarditis, and various arrhythmias. The study addresses the need for non-invasive, comfortable, and efficient cardiac monitoring solutions, aiming to enhance diagnostic capabilities, improve patient comfort, and facilitate timely intervention in cardiac care.