Advanced Design and Clinical Validation of a Low-Cost 12-Lead ECG Monitoring System

Hasan Falah Hasan Layij; Ahmed Abdulhadi Mohamedridha  Ali; Muntadher Khudhur Abbas  Ameen; Jaafar Basheer Abdullah  Abbas

doi:10.51699/cajmns.v7i1.3033

Hasan Falah Hasan Layij Al Mustaqbal University, College of Engineering, Department of Biomedical Engineering, Iraq
Ahmed Abdulhadi Mohamedridha Ali Al Mustaqbal University, College of Engineering, Department of Biomedical Engineering, Iraq
Muntadher Khudhur Abbas Ameen Al Mustaqbal University, College of Engineering, Department of Biomedical Engineering, Iraq
Jaafar Basheer Abdullah Abbas University of Thi Qar,College of Engineering, Department of Biomedical Engineering, Iraq

DOI: https://doi.org/10.51699/cajmns.v7i1.3033

Keywords: ECG Device, 12-Lead System, Biomedical Instrumentation, Cardiac Monitoring, Telemedicine, Analog Front-End, Signal Processing, Low-Cost Medical Devices

Abstract

This‍‌‍‍‌‍‌‍‍‌ research details the conception, innovation, and confirmation of a less, easy-to-carry 12-lead electrocardiogram (ECG) device for use in the hospital and expensive remote monitoring. In order to record clean cardiac signals, the planned system employs cutting-edge analog front-end instrumentation amplifiers, a precision right-leg drive circuit, and an integrated wireless transmission module. The instrument has a signal-to-noise ratio (SNR) of 42 dB, an input impedance of more than 100 MΩ, and a common-mode rejection ratio (CMRR) of over 90 dB at the 0.05-150 Hz frequency range. Clinical validation involved 50 patients, with results being compared to those of a commercial GE MAC 2000 ECG machine. The correlation coefficient for QRS complex detection was 0.987, and arrhythmia classification accuracy was 99.2%. The entire production cost is lowered by 68% in comparison to commercial equivalents. The device uses Bluetooth Low Energy (BLE 5.0) to send data to cloud-based diagnostic platforms in real-time, thus enabling telemedicine applications. The power usage is made efficient enough to 150 mW during a continuous operation, hence a single 3.7V Li-ion battery charge can energize the device for 24-hour monitoring. This study is a proof-of-concept that expensive ECG monitoring can be done for a fraction of the cost while maintaining the same level of diagnostic accuracy, thus cardiac care could find its way into the most deprived areas of the world.

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