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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Signalbehandling av arteriell blodtrycksdata för hypotensionsmätning / Signal Processing of Arterial Blood Pressure Data for Hypotension Measurement

Jönsson, Camilla, Liljeholm Lundin, Ludwig January 2020 (has links)
I detta projekt har tiden för hur länge en patient befinner sig i hypotension samt hypotensionsdosen beräknats. Tiden i hypotension har beräknats med hjälp av episoder i över en minut och hypotensionsdosen har kalkylerats som integralen mellan hypotensionsgränsen 65 mmHg och den estimerade medelartärtryckskurvan (MAP-kurvan). Flera metoder användes, såsom klassificering av extrempunkter i rådata och kurvanpassning genom interpolation, vilket gav varierande och olika goda resultat. Detta framförallt beroende på hur datan behandlades med olika filter, till exempel så kallat “smoothing”-filter samt medianfilter. / In this project the time of how long a person is in hypotension and the hypotension exposure have been calculated. The time was calculated using episodes longer than one minute and the hypotension exposure has been calculated as the integral between the hypotension limit 65 mmHg and the estimated mean arterial pressure curve (MAP-curve). Several methods were used, such as classification of extreme values in raw data and curve fitting through interpolation, which gave diverse results and of varied accuracy. This primarily because of which filter that was used, for example smoothing and median filters.

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