Development of a nonintrusive blood pressure estimation system for computer users

Area of Science:

• Biomedical Engineering
• Cardiovascular Physiology
• Health Informatics

Background:

• Cardiovascular health is crucial for overall well-being.
• Nonintrusive blood pressure (BP) monitoring during daily activities is desirable.
• Existing BP measurement methods can be intrusive or inconvenient for continuous monitoring.

Purpose of the Study:

• To estimate systolic blood pressure (BP) nonintrusively using pulse arrival time (PAT).
• To develop and validate a method for BP estimation using readily available computer peripherals.
• To assess the feasibility of long-term BP monitoring for telemedicine and e-health applications.

Main Methods:

• Pulse arrival time (PAT) was measured nonintrusively using electrocardiogram (ECG) from a capacitive-coupled electrocardiogram (CC-ECG) system and photoplethysmogram (PPG) from a computer mouse.
• PAT was calculated and compared to standard methods.
• Individualized equations were derived to estimate BP from PAT.
• Estimated BP was validated against measured BP under various conditions.

Main Results:

• PAT measurements correlated well with standard methods.
• Individualized BP estimation equations demonstrated tolerable error ranges.
• The method showed consistent performance in tracking BP fluctuations.
• Feasibility for long-term BP monitoring was established.

Conclusions:

• Nonintrusive BP estimation using PAT measured via a computer mouse is feasible.
• This method offers a convenient approach for continuous cardiovascular health monitoring.
• The technology holds potential for remote patient monitoring in telemedicine and e-health.