Model-based approach to investigate equipment-induced error in pressure-waveform derived hemodynamic measurements

Objective. Advanced hemodynamic monitoring systems have provided less invasive methods for
estimating pressure-derived measurements such as pressure-derived cardiac output (CO) measurements.
These devices apply algorithms to arterial pressure waveforms recorded via pressure recording
components that transmit the pressure signal to a pressure monitor. While standards have been
developed for pressure monitoring equipment, it is unclear how the equipment-induced error can
affect secondary measurements from pressure waveforms. We propose an approach for modelling
different components of a pressure monitoring system and use this model-based approach to
investigate the effect of different pressure recording configurations on pressure-derived
hemodynamic measurements. Approach. The proposed model-based approach is a three step process. (1)
Modelling the response of pressure recording components using bench tests; (2) verifying the
identified models through nonparametric ...

Source: Physiological Measurement - December 30, 2021 Category: Physiology Authors: Masoud Farahmand, Hossein Mirinejad and Christopher G Scully Source Type: research