Work

Validation of a new piezo-electronic device for non-invasive measurement of arterial pulse wave velocity according to the artery society guidelines

Year: 2015

Type: article

Abstract: Our aim was to validate a new device for pulse wave velocity (PWV) measurement e Aortic according to the recommendations of the Artery Society and using SphygmoCor as the comparator device.Methods: 85 subjects 18e80 years-old from both sexes were included, divided into 3 agegroups: <30, 30e60 and >60 years (minimum of 25 individuals per group) and with an equal number of hypertensive and normotensive subjects per group.Weight, height, blood pressure (BP) and PWV were assessed, performing 6 PWV determinations per subject: 3 with Aortic and 3 with SphygmoCor, in an alternate fashion.The BlandeAltman method was used to establish the level of agreement between the two devices.Results: PWV was 6.96 (Æ1.84) and 7 (Æ1.54)m/s with Aortic and SphygmoCor, respectively, showing a high correlation: r Z 0.89, p < 0.001.Applying the BlandeAltman method, the mean difference between devices was 0.02 (Æ0.84) m/s, which is considered an excellent level of agreement.Of the study population, 75.3% (n Z 64), 15.3% (n Z 13) and 9.4% (n Z 8) reached an excellent (mean difference 0.5 Æ 0.8 m/s), acceptable (mean difference 1.0 Æ 1.5 m/s) and poor (mean difference !1.0 Æ 1.5 m/s) level of agreement, respectively.Conclusion: Aortic showed an excellent level of agreement with SphygmoCor, the reference method, according to the Artery Society recommendations for PWV measurement.This was observed particularly for lower PWV values.

Source: Artery Research

DOI: 10.1016/j.artres.2015.03.001