Development of a High Blood Pressure and Hypoxemia Measuring Device

• Nnamdi S. OKOMBA

  Department of Computer Engineering, Federal University, Oye-Ekiti, Nigeria

  Author

• Adedayo A. SOBOWALE

  Department of Computer Engineering, Federal University, Oye-Ekiti, Nigeria

  Author

• Adebimpe O. ESAN

  Department of Computer Engineering, Federal University, Oye-Ekiti, Nigeria

  Author

• Bolaji A. OMODUNBI

  Department of Computer Engineering, Federal University, Oye-Ekiti, Nigeria

  Author

• Taiwo A. AWOYEMI

  Department of Computer Engineering, Federal University, Oye-Ekiti, Nigeria

  Author

This paper presents the design and implementation of a high blood pressure and hypoxemia measuring device. High blood pressure and hypoxemia are major global health concerns, often leading to stroke, heart disease, disability, and death. Factors such as lifestyle, genetics, and environmental influences contribute to hypertension, affecting over 20% of adults worldwide. Hypertensive patients commonly experience stress, anxiety, depression, and heightened cardiovascular responses to stressors. Hypoxemia, particularly prevalent in Africa, is a significant cause of mortality, with a 13.3% prevalence rate in hospitalized children. Existing devices typically monitor either blood pressure or oxygen levels separately, which discourages consistent vital sign monitoring. To address this limitation, a device capable of simultaneously measuring both high blood pressure and hypoxemia is essential. This proposed device enables early detection and management of these conditions, potentially reducing death rates. The system is built using a microcontroller (ESP32), a power supply unit, a blood pressure sensor (VM50), a MAX30100 oxygen sensor, and an LCD display. Comparative testing between the developed device and standard hospital equipment was conducted on male and female subjects across various age groups. Results showed strong agreement between the devices, with discrepancies in oxygen level readings being less than 1%, which is clinically insignificant. Additionally, blood pressure measurements from the constructed device were compared with those from a hospital-used Omron blood pressure monitor on individuals aged 15–29. The percentage error in blood pressure readings was approximately ±3%, indicating acceptable accuracy. These outcomes confirm the device’s reliability for monitoring both blood pressure and hypoxemia in clinical and non-clinical environments, offering a cost-effective and practical solution for continuous health monitoring.

• FJET_12_20_13

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