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Integrated Demonstration Module for Basic Biomedical Signal Processing

There are five vital signs normally used to monitor and document a patients' health or deterioration during hospitalization. These vital signs consists of blood pressure (BP), oxygen saturation of the blood (SpO2), pulse rate, respiratory rate, and body temperature. Technological breakthroughs are revolutionizing the way healthcare service is being delivered including in vital signs measurement field. Most of vital signs now can be measured non - invasively and electronically. Most of vital signs monitoring devices are widely used in hospitals and health clinics. Healthcare providers require resident human resources capable of handling technical issues regarding the devices. The technician or engineer fulfilling such requirements usually graduated from study program that has specific courses related to medical devices within its curriculum. Lately, our department has been developing a course that includes biomedical variables measurement as one of the topics. Therefore a demonstration module is required as a means to provide better understanding to the students upon the concepts learned. The developed demonstration module has capability to measure and display heart signal, blood oxygen saturation, and blood pressure. The accuracy of the measurements has been verified relative to commercially available device. Experimental data set reveals that the bias and precision for heart rate measurement are 2 bpm and 6 bpm; for SpO2 measurement are 3% and 5%. The measurement bias for SP an DP is 1 mmHg and 5 mmHg respectively. The precision of developed blood pressure monitor is comparable with the one exhibited by reference device that is 6 mmHg vs. 5 mmHg for SP measurement and 5 mmHg vs. 4 mmHg for DP measurement.