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Sökning: WFRF:(Eneling Martin 1973 )

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  • Jönsson, Björn, 1951-, et al. (författare)
  • Automatic ankle pressure measurements using PPG in ankle-brachial pressure index determination
  • 2005
  • Ingår i: European Journal of Vascular and Endovascular Surgery. - : Elsevier BV. - 1078-5884 .- 1532-2165. ; 30:4, s. 395-401
  • Tidskriftsartikel (refereegranskat)abstract
    • ObjectiveTo evaluate a new technique using a photoplethysmographic (PPG) probe for automatic ankle pressure measurements.DesignComparative study on two techniques for ankle pressure measurement.SettingUniversity hospital.MaterialThirty-five patients with leg arterial disease and eight healthy volunteers. Ankle-brachial indices (ABPI) were measured using conventional CW Doppler technique and PPG-based prototype equipment for the ankle pressure recordings.Chief outcome measuresABPIs calculated from CW Doppler and PPG ankle pressure measurements. The PPG signals were analysed both by visual judgement and by a software based, automatic algorithm.Main resultsThe mean difference between ABPIs calculated from CW Doppler recordings and PPG (visual analysis) was −0.01 (limits of agreement (±two standard deviations) +0.16 to −0.19). The correlation coefficient was 0.93. When the algorithm was used, the mean difference (CW Doppler−PPG) was 0.05 (limits of agreement 0.28 to −0.18, r=0.89).ConclusionsThe PPG method is a promising technique with an inherent potential for automatisation of the ankle pressure measurements, thereby reducing the observer-dependency in ABPI recordings.
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