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Cuffless and Continuous Blood Pressure Estimation from the Heart Sound Signals.

Authors :
Peng RC
Yan WR
Zhang NL
Lin WH
Zhou XL
Zhang YT
Source :
Sensors (Basel, Switzerland) [Sensors (Basel)] 2015 Sep 17; Vol. 15 (9), pp. 23653-66. Date of Electronic Publication: 2015 Sep 17.
Publication Year :
2015

Abstract

Cardiovascular disease, like hypertension, is one of the top killers of human life and early detection of cardiovascular disease is of great importance. However, traditional medical devices are often bulky and expensive, and unsuitable for home healthcare. In this paper, we proposed an easy and inexpensive technique to estimate continuous blood pressure from the heart sound signals acquired by the microphone of a smartphone. A cold-pressor experiment was performed in 32 healthy subjects, with a smartphone to acquire heart sound signals and with a commercial device to measure continuous blood pressure. The Fourier spectrum of the second heart sound and the blood pressure were regressed using a support vector machine, and the accuracy of the regression was evaluated using 10-fold cross-validation. Statistical analysis showed that the mean correlation coefficients between the predicted values from the regression model and the measured values from the commercial device were 0.707, 0.712, and 0.748 for systolic, diastolic, and mean blood pressure, respectively, and that the mean errors were less than 5 mmHg, with standard deviations less than 8 mmHg. These results suggest that this technique is of potential use for cuffless and continuous blood pressure monitoring and it has promising application in home healthcare services.

Details

Language :
English
ISSN :
1424-8220
Volume :
15
Issue :
9
Database :
MEDLINE
Journal :
Sensors (Basel, Switzerland)
Publication Type :
Academic Journal
Accession number :
26393591
Full Text :
https://doi.org/10.3390/s150923653