Abstract

Introduction

Materials & Methods

Results

Discussion & Conclusion

References

Discussion
Board

Motion artefact corruption of near infrared plethysmography, causing both measurement inaccuracies and false alarm conditions, is a primary restriction in the current clinical practice and future applications of this useful technique. A number of different conceptual approaches to dealing with artefact are discussed and illustrated by example. An inter-comparison between artefact recognition and artefact reduction is made, by employing a spectral analysis method. Limitations of the recognition approach and the reduction method are described. The recognition of severe artefact and the reduction of mild artefact are shown to be essential features of future generalised systems. Recommendations are made for the future design of near infra red systems for arterial vascular measurement and limitations on the interpretation of data from ambulatory or other motion inducing modalities are outlined.

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Poster Number PAsmith0901
Keywords: plethysmography, near infrared, non-invasive, blood volume