An affordable cuff-less blood pressure estimation solution.

Area of Science:

• Biomedical Engineering
• Medical Devices
• Health Informatics

Background:

• Hypertension is a significant global health concern requiring continuous monitoring.
• Current blood pressure monitoring methods are often invasive or intermittent.
• There is a need for portable, non-invasive, and continuous blood pressure monitoring solutions.

Purpose of the Study:

• To develop and validate a cuff-less device for continuous, non-invasive monitoring of blood pressure (BP) and heart rate (HR).
• To assess the accuracy of the device against a clinically validated digital blood pressure monitor.
• To provide a low-cost, portable solution for home and clinical health monitoring.

Main Methods:

• Simultaneous recording of Electrocardiogram (ECG) and Photoplethysmogram (PPG) signals.
• Utilizing a kernel regression approach for real-time BP and HR estimation.
• Error analysis using normalized mean square error, Error Standard Deviation (ESD), and Mean Absolute Error (MAE).
• Validation using a two-tailed dependent sample t-test.

Main Results:

• The device accurately estimates BP and HR using ECG and PPG signals.
• Estimation errors (MAE < 5 mmHg, ESD < 8 mmHg) fall within acceptable clinical limits set by the Association for the Advancement of Medical Instrumentation.
• The device demonstrated a high degree of accuracy validated by statistical testing.

Conclusions:

• The proposed cuff-less device offers a reliable and accurate method for continuous, non-invasive BP and HR monitoring.
• It presents a portable, low-cost solution suitable for both home and clinical settings.
• This technology has the potential to improve hypertension management and preventative healthcare.