Low cost circulatory pressure acquisition and fluid infusion rate measurement system for clinical research

Rachel Smith; Amelia Rolfe; Chris Cameron; Geoffrey M Shaw; J Geoffrey Chase; Christopher G Pretty

doi:10.1016/j.ohx.2022.e00318

Low cost circulatory pressure acquisition and fluid infusion rate measurement system for clinical research

HardwareX. 2022 May 21:11:e00318. doi: 10.1016/j.ohx.2022.e00318. eCollection 2022 Apr.

Authors

Rachel Smith¹, Amelia Rolfe¹, Chris Cameron¹, Geoffrey M Shaw^{1

2}, J Geoffrey Chase¹, Christopher G Pretty¹

Affiliations

¹ Department of Mechanical Engineering, University of Canterbury, New Zealand.
² Christchurch Hospital Intensive Care Unit, New Zealand.

Abstract

Acquiring patient physiological waveforms is useful for studying hemodynamic management and developing medical monitoring systems. A low cost, Arduino controlled data acquisition system acquires arterial pressure waveforms (Edwards Lifesciences TruWave compatible) and measures fluid infusion rate using hanging scales. This system can be used at the same time as a clinical monitor, enabling recording of patient arterial pressure and fluid delivery for clinical research. The system is powered via a USB connection, which additionally provides serial output, aiding compatibility and customisation. A simple software user interface, developed in Python, shows outputs. Each data acquisition system, including all necessary connection cables costs ~US$90 and is multiple-use.

Keywords: Customisable data acquisition system; Fluid infusion rate; Hemodynamic analysis; Invasive arterial pressure.