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Wearable Piezoelectric-Based System for Continuous Beat-to-Beat Blood Pressure Measurement
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Journal Article
Wearable Piezoelectric-Based System for Continuous Beat-to-Beat Blood Pressure Measurement
2020
Overview
Non-invasive continuous blood pressure measurement is an emerging issue that potentially can be applied to cardiovascular disease monitoring and prediction. Recently, many groups have proposed the pulse transition time (PTT) method to estimate blood pressure for long-term monitoring. However, the PTT-based methods for blood pressure estimation are limited by non-specific estimation models and require multiple calibrations. This study aims to develop a low-cost wearable piezoelectric-based system for continuous beat-to-beat blood pressure measurement. The pressure change in the radial artery was extracted by systolic and diastolic feature points in pressure pulse wave (PPW) and the pressure sensitivity of the sensor. The proposed system showed a reliable accuracy of systolic blood pressure (SBP) (mean absolute error (MAE) ± standard deviation (SD) 1.52 ± 0.30 mmHg) and diastolic blood pressure (DBP, MAE ± SD 1.83 ± 0.50), and its performance agreed with standard criteria of MAE within 5 mmHg and SD within ±8 mmHg. In conclusion, this study successfully developed a low-cost, high-accuracy piezoelectric-based system for continuous beat-to-beat SBP and DBP measurement without multiple calibrations and complex regression analysis. The system is potentially suitable for continuous, long-term blood pressure-monitoring applications.
Publisher
MDPI AG,MDPI
Subject
/ Adult
/ Blood Pressure Determination - instrumentation
/ Blood Pressure Determination - methods
/ Female
/ Humans
/ Male
/ Microelectromechanical systems
/ Photoplethysmography - methods
/ Pressure
/ Pulse Wave Analysis - methods
/ Sensors
/ Signal Processing, Computer-Assisted
/ Software
/ Systole
