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Non-invasive measurement of peripheral venous oxygen saturation using a new venous oximetry method: evaluation during bypass in heart surgery
journal contribution
posted on 2016-08-05, 11:23 authored by Angelos S. Echiadis, Vincent P. Crabtree, Johan Bence, Leonidas Hadjinikolaou, Christos Alexiou, Tomasz J. Spyt, Sijung HuSijung HuMonitoring of mixed venous oxygen saturation (SvO2) is currently performed
using invasive fibre-optic catheters. This procedure is not without risk
as complications may arise from catheterization. This paper describes an
alternative, non-invasive method of monitoring peripheral venous oxygen
saturation (SxvO2) which, although it cannot replace pulmonary artery
catheters, can serve as an adjunct/early warning indicator of when there is an
imbalance in oxygen supply and demand. The technique requires the generation
of an artificial venous pulse at the finger, thereby causing modulation of the
venous blood volume within the digit. The blood volume changes aremonitored
using an optical sensor. Just as pulse oximetry utilizes the natural arterial pulse
to perform a spectrophotometric analysis of the peripheral blood in order to
estimate the arterial blood oxygen saturation, the proposed venous oximetry
technique uses the artificially generated venous pulse to estimate SxvO2. A
prototype device was tested in a pilot study with patients undergoing heart
surgery. Data from this study support the notion that the method is capable
of tracking haemodynamic changes and suggests the technique is worthy of
further development and evaluation.
Funding
This work has been financed and facilitated by BTG plc and Loughborough University, UK.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
Physiological MeasurementVolume
28Pages
. 897 - 911Citation
ECHIADIS, A. ... et al., 2007. Non-invasive measurement of peripheral venous oxygen saturation using a new venous oximetry method: evaluation during bypass in heart surgery. Physiological Measurement, 28 (8), pp.897-911.Publisher
© Institute of PhysicsVersion
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2007Notes
Closed access.ISSN
0967-3334eISSN
1361-6579Publisher version
Language
- en