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1.
Non-Newtonian blood flow around healthy and regurgitated aortic valve with coronary blood flow involved
Jure Marn, Jurij Iljaž, Zoran Žunič, Primož Ternik, 2012, original scientific article

Abstract: Most numerical simulations about aortic valve are discussing about the blood flow through prosthetic valves, therefore this study covers a biological aortic valve. In this paper the simulation of blood flow around the regurgitated valve as well as around the health valve have been investigated and is showing how the regurgitation affects the heart function and coronary blood flow. Furthermore it also covers the coronary blood flow and its affect on the blood motion around the valve and consequently on the possible calcification. The physical problem has been treated for the period of closed valve, because of the regurgitation, which occurs at that time. For this restriction the assumption of non-elastic geometry has been used. Also the non-Newtonian Power Law model for the blood rheology has been used; because of the regions of slowly moving blood. Results are showing that the coronary blood flow does not have a high impact on the blood motion and thus the calcification is more probable as well that the regurgitation has a strong affect on the heart function, like aortic pressure drop, increased left ventricle volume, etc. The calcification reason has also been stated, but needs some further investigation. This paper covers in detail the geometry of computational domain and physics, so the results can be easily repeated.
Keywords: aortna zaklopka, regurgitacija, dinamika tekočin, nenewtonska tekočina
Published: 10.07.2015; Views: 828; Downloads: 82
URL Link to full text

2.
ZDRAVSTVENA NEGA BOLNIKA MED PREKUTANO DILATACIJO AORTNE ZAKLOPKE
Nika Groznik, 2014, undergraduate thesis

Abstract: Diplomsko delo obravnava zdravstveno nego pacienta med balonsko dilatacijo aortne zaklopke. V njem je predstavljeno delo in kompetence dipl. medicinske sestre ob bolniku v katetrskem labaratoriju.V prvem delu je predstavljena aortna stenoza kot diagnoza in opisan poseg-balonska dilatacija aortne zaklopke. V drugem delu diplomske naloge je opisan konkreten primer, kjer je prikazana priprava pacienta tako fizična kot psihična, priprava delavnega prostora in umerjanje aparatur, ki so potrebne za natančno opravljene meritve v srčnih votlinah med samim posegom. V diplomskem delu bomo zaradi lažjega razumevanja zdravstvene nege bolnika med dilatacijo aortne zaklopke, na kratko opisali anatomijo in fiziologijo aortne zaklopke.
Keywords: aortna zaklopka, aortna stenoza, balonska dilatacija aortne zaklopke (BAV), zdravstvena nega.
Published: 22.08.2014; Views: 1386; Downloads: 280
.pdf Full text (354,52 KB)

3.
Parametrična analiza pretoka skozi aortno zaklopko
Renato Brodar, 2012, undergraduate thesis

Abstract: S pomočjo računalniškega programa na osnovi računalniške dinamike tekočin smo parametrično analizirali pretok skozi aortno zaklopko. Osredotočili smo se na primerjavo aortnih zaklopk z različnimi stopnjami pojavnosti insuficience. Želeli smo prikazati odvisnost med stopnjo obolelosti aortne zaklopke z insuficienco in posledicami v delovanju človekovega organizma. Numerični model je upošteval kri kot nenewtonsko tekočino s potenčnim zakonom ter predpostavljal neelastično geometrijo. Rezultati kažejo, da je delovanje aortne zaklopke v organizmu zelo pomembno, insuficienca pa bistveno spremeni tokovne razmere pri delovanju srca.
Keywords: aortna zaklopka, računalniška dinamika tekočin, parametrična analiza
Published: 25.10.2012; Views: 1868; Downloads: 167
.pdf Full text (3,82 MB)

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