Continuous blood pressure estimation using pulse arrival time and photoplethysmogram

Abstract

Pulse arrival time and the amplitude of the finger photoplethysmogram were used to track continuous systolic blood pressure over 10-minute intervals. The measures were recorded with a holter-oximeter from a sample of 8 young, healthy human subjects in the supine and standing positions. Results show that, with individual calibration, systolic blood pressure can be estimated with an average error of ±5 mmHg. Using pulse arrival time in combination with the amplitude of the finger photoplethysmogram gave better results than using any one alone. (5 pages)