ArticlePhysiological research2025
Comparison of Pulse Wave Arrival Times Measured by Bioimpedance Method and Doppler Ultrasound.
Article in Physiological research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Pulse wave velocity is a key indicator of vascular health. This study compared pulse wave arrival time (PWAT) measurements 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 Doppler-derived 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, significant discrepancies were found when comparing R-dZMAX with t1, t2, and t3. The level of agreement also varied according to the arterial site. Bioimpedance shows promise for PWAT estimation, particularly when R-dZMAX is used to estimate t1-2 derived from Doppler ultrasound, representing the phase of maximal systolic flow acceleration. This suggests that the maximum rate of impedance change during rapid arterial filling provides a more accurate PWAT measurement. More research is warranted to refine bioimpedance techniques for a reliable vascular assessment under various conditions. Key words Pulse wave arrival time " Pulse wave velocity " Pulse wave Doppler " Blood flow " Bioimpedance.
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41511106PMC12849769What OpenQuestion holds
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