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Impression technique for the assessment of oedema: technical improvement and methodological evaluation of a new technique
Umeå University, Department of Physiology.
Linköping University, Department of Biomedical Engineering.
1991 (English)In: Medical and Biological Engineering and Computing, ISSN 0140-0118, E-ISSN 1741-0444, Vol. 29, no 6, p. 591-7Article in journal (Refereed) Published
Abstract [en]

A new instrument for the assessment of oedema based on the impression method is described. The measurement parameters are defined and the errors corresponding to the electrical and mechanical stability of the instrument are measured. The overall accuracy is calculated theoretically for the translocated volume. The accuracy and reproducibility are evaluated on plastic foam. The clinical procedure to measure oedema with this instrument is described. We show that the accuracy of the translocated volume parameter is very dependent on the overall stability of the instrument and that this instrument has an overall relative error of less than 7.3 per cent for a representative measurement. Experimental measurements on plastic foam show that the measurement parameters could be reproduced with standard deviations of less than 6 per cent and that the standard deviations for translocated volume are within the calculated overall relative error. Measurements on four patients with chronic oedema in an extremity show significantly different results on locations where pitting could be recognised compared to the contralateral nonoedematous extremity.

Place, publisher, year, edition, pages
1991. Vol. 29, no 6, p. 591-7
National Category
Other Medical Engineering
Research subject
Medical Engineering for Healthcare
Identifiers
URN: urn:nbn:se:ltu:diva-9297Local ID: 7e338630-077b-11dc-b09b-000ea68e967bOAI: oai:DiVA.org:ltu-9297DiVA, id: diva2:982235
Note
Upprättat; 1991; 20070521 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Lindahl, Olof

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