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A one-dimensional model of a false aneurysm
Linköpings universitet, Matematiska institutionen, Beräkningsmatematik. Linköpings universitet, Tekniska fakulteten.ORCID-id: 0000-0002-2681-8965
Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Mekanisk värmeteori och strömningslära. Linköpings universitet, Tekniska fakulteten.ORCID-id: 0000-0001-5526-2399
Linköpings universitet, Matematiska institutionen, Matematik och tillämpad matematik. Linköpings universitet, Tekniska fakulteten.
St Petersburg State University, St Petersburg State Polytechnical University, and Institute of Problems of Mechanical Engineering RAS, Russia..
2017 (engelsk)Inngår i: International Journal of Research in Engineering and Science (IJRES), ISSN 2320-9356, Vol. 5, nr 6, s. 61-73Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

 A false aneurysm is a hematoma, i.e. collection ofblood outside of a blood vessel, that forms due to a hole  in the wall of an artery . This represents a serious medical condition that needs to be monitored and, under certain conditions, treatedurgently. In this work a one-dimensional model of a false aneurysm isproposed. The new model is based on a one-dimensional model of anartery previously presented by the authors and it takes into accountthe interaction between the hematoma  and the surrounding musclematerial. The model equations are derived  using rigorous asymptoticanalysis for the case of a simplified geometry.   Even though the model is simple it still supports a realisticbehavior for the system consisting of the vessel and the  hematoma. Using numerical simulations we illustrate the behavior ofthe model. We also investigate the effect  of changing the size of the hematoma. The simulations show that ourmodel can reproduce realistic solutions. For instance we show thetypical strong pulsation of an aneurysm by blood entering the hematoma during the work phase of the cardiac cycle, and the blood returning tothe vessel during the resting phase. Also we show that the aneurysmgrows  if the pulse rate is increased due to, e.g., a higher work load. 

sted, utgiver, år, opplag, sider
IJRES , 2017. Vol. 5, nr 6, s. 61-73
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-138836OAI: oai:DiVA.org:liu-138836DiVA, id: diva2:1116998
Tilgjengelig fra: 2017-06-28 Laget: 2017-06-28 Sist oppdatert: 2017-08-08bibliografisk kontrollert

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A one-dimensional model of a false aneurysm(896 kB)132 nedlastinger
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