Validation of a Piezoelectric Sensor Array-Based Device for Measurement of Carotid-Femoral Pulse Wave Velocity: The Philips Prototype

Pulse
Shao-Kun XuJi-Guang Wang

Abstract

Multiple piezoelectric pressure mechanotransducers topologized into an array might improve efficiency and accuracy in collecting arterial pressure waveforms for measurement of pulse wave velocity (PWV). In the present study, we validated a piezoelectric sensor array-based prototype (Philips) against the validated and clinically widely used Complior device (Alam Medical). We recruited 33 subjects with a wide distribution of PWV. For the validation, PWV was measured sequentially with the Complior device (four times) and the Philips prototype (three times). With the 99 paired PWV values, we investigated the agreement between the Philips prototype and the Complior device using Pearson correlation analysis and Bland-Altman plot. We also performed analysis on the determinants and reproducibility of PWV measured with both devices. The correlation coefficient for PWV measured with the two devices was 0.92 (p < 0.0001). Compared with the Complior device, the Philips prototype slightly overestimated PWV by 0.24 (± 2 standard deviations, ± 1.91) m/s, especially when PWV was high. The correlation coefficient between the difference and the average of the Philips and Complior measurements was 0.21 (p = 0.035). Nonetheless, they had similar d...Continue Reading

References

Jul 6, 1996·BMJ : British Medical Journal·J M Bland, D G Altman
May 2, 2001·Journal of Hypertension·R AsmarUNKNOWN Scientific, Quality Control, Coordination and Investigation Committees of the Complior Study
Sep 22, 2001·Hypertension·G M LondonM E Safar
Jan 30, 2010·Blood Pressure Monitoring·Eoin O'BrienUNKNOWN Working Group on Blood Pressure Monitoring of the European Society of Hypertension
Nov 15, 2011·Journal of Hypertension·Thomas WeberSiegfried Wassertheurer
Sep 27, 2014·Hypertension·Chang-Sheng ShengJi-Guang Wang

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