Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Utvärdering av mikrobubblor i ett dialyssystem
Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics. Umeå University, Faculty of Medicine, Department of Radiation Sciences.
2018 (Swedish)Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesisAlternative title
Evaluation of microbubbles in a dialysis system (English)
Abstract [sv]

Dialys görs för att avlägsna restprodukter och avlägsna vatten från blodet. Under dialysbehandling förekommer mikroluftbubblor i blodet som går tillbaka in i patienten. Mikrobubblor i blod kan medföra risk för patienten under behandling när dessa passerar lungbarriären. Detta examensarbete har utförts i forskningssyfte för att ta reda på om blodets koncentration och/eller flödeshastigheten i systemet har någon inverkan på antalet och volymen mikroluftbubblor som tar sig igenom luftkammaren inom dialys. Rapporten behandlar hur mätningarna och analyseringen utförts och vad resultatet från projektet blivit.

Studien bevisar att flödeshastigheten 400ml/min resulterar i att mest mikroluftbubblor passerar systemets luftkammare och går tillbaka till patienten. Det verkar som att när blodkoncentrationen överstiger 120HB så är flödeshastigheten 300ml/min effektivare på att reducera luft än vad flödeshastigheten 200ml/min är. Studien indikerar att alltför höga flöden (400ml/min) inte bör användas på patienter eftersom luftkammaren reducerar mindre antal bubblor och volym luft, troligtvis därför att höga flöden medför mer turbulens och därmed ett ökat antal mikrobubblor.

Abstract [en]

Dialysis is performed to remove waste products and water from the blood. During dialysis treatment micro air bubbles occurs in the blood that goes back into the patient. Micro bubbles in blood may cause risk to the patient during treatment when these pass the lung barrier. This bachelor thesis was completed in research purposes to find out if the concentration of the blood and/or the flow rate in the system has any impact on the number and volume of micro air bubbles that passes the air chamber in haemodialysis. This report addresses how the measurements and analysis were done and how the results of the project turned out.

The study proves that the flow rate 400ml/min results in the largest amount of micro air bubbles that passes the systems air chamber and goes back into the patient. It seems that when the concentration of the blood is 120HB and higher the flow rate 300ml/min is more effective in reducing air than when the flow rate is 200ml/min. The study proves that the flow rate 400ml/min shouldn’t be used to treat patients because the air chamber doesn’t reduce the amount of micro bubbles or volume air as well as the lower flow rates.

Place, publisher, year, edition, pages
2018. , p. 29
National Category
Medical Engineering
Identifiers
URN: urn:nbn:se:umu:diva-144661OAI: oai:DiVA.org:umu-144661DiVA, id: diva2:1182931
External cooperation
CMTS Medicinsk teknik & FoU, Norrlands universitetssjukhus
Subject / course
Elektronik
Educational program
Bachelor of Science Programme in Electronic and Computer Engeneering/ Medical engineering
Supervisors
Examiners
Available from: 2018-02-15 Created: 2018-02-15 Last updated: 2018-02-15Bibliographically approved

Open Access in DiVA

fulltext(2142 kB)27 downloads
File information
File name FULLTEXT01.pdfFile size 2142 kBChecksum SHA-512
1364a1b89079f8697793d16f76d2e1c0c40948f5459c4a95bc76c3ab491895066a87054f003b3b0fc2d24d0f430f6e691227d6de39b30e97369f74a612b14aa2
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Franzon, Philip
By organisation
Department of Applied Physics and ElectronicsDepartment of Radiation Sciences
Medical Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 27 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 115 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf