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Comparison of Perfusion Index Monitoring Using a Smartwatch and a Pulse Oximeter
Sponsor: Czech Technical University in Prague
Summary
The aim of the study is to experimentally compare measured perfusion index values between smartwatch and a medical grade pulse oximeter in healthy subjects at rest and with and without motion artifacts and during exercise.
Key Details
Gender
All
Age Range
18 Years - Any
Study Type
INTERVENTIONAL
Enrollment
50
Start Date
2024-10-08
Completion Date
2025-08-30
Last Updated
2024-10-03
Healthy Volunteers
No
Conditions
Interventions
Resting conditions
The volunteers hand is at rest and Perfusion index readings are taken for six minutes from pulse oximeter and smartwatch
Movement artifacts
The volunteer periodically spreads his/her fingers and clenches them into a fist, and Perfusion index readings are taken for six minutes from pulse oximeter and smartwatch.
Circulation constriction
The volunteers arm is constricted using a cuff to measure non-invasive blood pressure. The perfusion index value is monitored during the time of cuff pressure and cuff release. The measurement is followed by a 4-minute pause to allow the vascular supply to stabilize. The measurement is repeated three times.
Physical exercise
The volunteer is seated on the exercise bike, rests his forearms on the handlebars and is instructed not to move his arms. The volunteer\'s heart rate is controlled to increase to 120 beats per minute. For five minutes, the perfusion index is recorded from a pulse oximeter and smartwatch.