Publication Details
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.