Comparison of Pulse Wave Arrival Times Measured by Bioimpedance Method and Doppler Ultrasound

Abstract

Pulse wave velocity is a key indicator of vascular health. This obtained by non-invasive bioimpedance with Doppler ultrasound, the gold standard, at multiple arterial sites. Simultaneous PWAT measurements were performed using bioimpedance (-dZMAX) and Doppler ultrasound (t1 - the beginning of the blood flow, t2 - the peak of the blood flow, t3 - the end of blood flow, t1-2 - the midpoint of the blood flow/center between t1 and t2) in healthy volunteers. The agreement between R-dZMAX and the Dopplerderived time points was assessed at various locations. The lowest average error (2.46 %) was observed between R-dZMAX and t1-2, the increase at the midpoint of the systolic flow. However, vascular assessment under various conditions.