A Bioimpedance Measurement System for Pulse Wave Analysis

TL;DR

This paper introduces a novel bioimpedance measurement system capable of high-speed pulse wave analysis, providing detailed cardiovascular insights beyond traditional cuff-based methods.

Contribution

The work presents a new bioimpedance device with high sampling rate and resolution, enabling more precise pulse wave measurement and analysis.

Findings

System measures up to 1000 bioimpedances per second

Achieves 24-bit resolution in measurements

Successfully acquires pulse wave data at the forearm

Abstract

The morphology and velocity of the pulse wave in the arteries provide meaningful information about the cardiovascular system. Nowadays, the pulse wave is usually acquired using common blood pressure cuffs at the extremities. This work describes a new measurement device which detects changes in bioimpedance due to the pulse wave. The system is able to measure up to 1000 bioimpedances per second with a resolution of 24 bits. For comparison purposes, an additional synchronized photoplethysmography circuit is implemented. Initial measurements proved that the system is able to acquire the pulse wave at the forearm.