Memorias de investigación
Ponencias en congresos:
Hemodynamic performance of different stent strategies for coronary bifurcations. Evaluation with a
Año:2011
Áreas de investigación
  • Ingenieria mecanica
Datos
Descripción
Purpose: Best percutaneous treatment strategy for lesions in coronary bifurcations is an ongoing subject of debate. There is limited data that analyses the effect of the different bifurcation strategies on coronary flow. Our aim is to evaluate the influence of different bifurcation stenting strategies on hemodynamic parameters, both in the main vessel (MV) and side branch (SB). Methods: A computerized mathematical model based on finite volume analysis, was used to evaluate hemodynamic patterns in the following cases: bifurcation with no stenting, simple stenting in main vessel (SS), simple stent in main vessel and "kissing balloon" through the side branch (KB) and "Coulotte Technique" (CT). For each case a 45° and 90° bifurcation configuration was evaluated. Three parameters were measured in MV and SB: volumetric flow and pressure decrease, low shear stress area (<20%(<0.1 Pa) of the value proximal to bifurcation) and vorticity (index of turbulence). Low shear stress has been related to plaque formation and restenosis Results: Overall 90° bifurcations, regardless of the technique, had a worse haemodynamic behaviour (greater decrease in pressure and SB flow) compared to 45°(see table). SS is the technique that provides worst haemodynamic performance.CT technique preserves the best the flow in the SB but only in the 45° configuration, with no advantage over KB in 90°. This behaviour may be explained by differences in turbulence (Vorticity) however the area exposed to low shear stress was the greatest with the CT technique at 45°. Conclusions: In our model, the bifurcation angle has a great influence in the haemodynamic behaviour of different stenting techniques. SS technique has the worst results in terms of haemodynamics. However CT creates the largest area in contact with low shear stress
Internacional
Si
Nombre congreso
European Society of Cardiology Congress 2011
Tipo de participación
960
Lugar del congreso
Paris (Francia)
Revisores
Si
ISBN o ISSN
0195-668x
DOI
Fecha inicio congreso
27/08/2011
Fecha fin congreso
31/08/2011
Desde la página
1047
Hasta la página
1047
Título de las actas
European Heart Journal ( 2011 ) 32 ( Abstract Supplement ), 1047
Esta actividad pertenece a memorias de investigación
Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Mecánica de fluidos aplicada a la Ingeniería Industrial