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Comparison of physiological and post-endovascular aneurysm repair infrarenal blood flow
dc.creator | Raptis A., Xenos M., Georgakarakos E., Kouvelos G., Giannoukas A., Labropoulos N., Matsagkas M. | en |
dc.date.accessioned | 2023-01-31T09:51:12Z | |
dc.date.available | 2023-01-31T09:51:12Z | |
dc.date.issued | 2017 | |
dc.identifier | 10.1080/10255842.2016.1215437 | |
dc.identifier.issn | 10255842 | |
dc.identifier.uri | http://hdl.handle.net/11615/78461 | |
dc.description.abstract | Endovascular aneurysm repair (EVAR) of abdominal aortic aneurysms results in redirection of blood through the deployed endograft (EG). Even though EVAR is clinically effective, the absolute flow restoration is not warranted. Our purpose was to compare the physiological with the post-EVAR infrarenal flow conditions. We developed patient-specific models based on computed tomography data of five healthy volunteers and ten patients treated with the Endurant® stent-graft system. Wall shear stress (WSS), helicity, pressure and velocity fields were calculated using computational fluid dynamics. The results showed a decrease of peak WSS on the part of the EG that resides in the iliac arteries, compared to the physiological value (p = 0.01). At the abdominal part, the average helicity seems to increase after EVAR, while at the iliac arteries part, the intensity of helical flow seems physiological. Pressure drop and peak velocity in the iliac arteries part are lower than the physiological values (p = 0.04). The comparison revealed that most hemodynamic properties converge to normal levels at the abdominal part whereas statistically significant variations were observed in the iliac arteries part. The delineation of the differences between physiological and postoperative flow data could pave the way for the improvement of EG designs. © 2016 Informa UK Limited, trading as Taylor & Francis Group. | en |
dc.language.iso | en | en |
dc.source | Computer Methods in Biomechanics and Biomedical Engineering | en |
dc.source.uri | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84983283353&doi=10.1080%2f10255842.2016.1215437&partnerID=40&md5=0b8027cf229527fb10dc47e7b4e3909f | |
dc.subject | Blood | en |
dc.subject | Blood vessels | en |
dc.subject | Computational fluid dynamics | en |
dc.subject | Computerized tomography | en |
dc.subject | Hemodynamics | en |
dc.subject | Patient monitoring | en |
dc.subject | Patient treatment | en |
dc.subject | Physiology | en |
dc.subject | Repair | en |
dc.subject | Shear stress | en |
dc.subject | Velocity | en |
dc.subject | Abdominal aortic aneurysms | en |
dc.subject | comparison | en |
dc.subject | Computed tomography data | en |
dc.subject | Endograft | en |
dc.subject | Endovascular | en |
dc.subject | Healthy volunteers | en |
dc.subject | Patient specific model | en |
dc.subject | Wall shear stress | en |
dc.subject | Shear flow | en |
dc.subject | contrast medium | en |
dc.subject | abdominal aorta aneurysm | en |
dc.subject | adult | en |
dc.subject | aged | en |
dc.subject | aorta bifurcation | en |
dc.subject | aortic aneurysm endovascular graft | en |
dc.subject | arterial pressure | en |
dc.subject | Article | en |
dc.subject | blood flow velocity | en |
dc.subject | clinical article | en |
dc.subject | computed tomographic angiography | en |
dc.subject | computer assisted tomography | en |
dc.subject | controlled study | en |
dc.subject | endovascular aneurysm repair | en |
dc.subject | heart cycle | en |
dc.subject | hemodynamic parameters | en |
dc.subject | human | en |
dc.subject | kidney blood flow | en |
dc.subject | male | en |
dc.subject | physiology | en |
dc.subject | postoperative period | en |
dc.subject | pressure gradient | en |
dc.subject | priority journal | en |
dc.subject | shear stress | en |
dc.subject | vascularization | en |
dc.subject | Aortic Aneurysm, Abdominal | en |
dc.subject | biomechanics | en |
dc.subject | blood flow velocity | en |
dc.subject | blood vessel prosthesis | en |
dc.subject | blood vessel transplantation | en |
dc.subject | comparative study | en |
dc.subject | diastole | en |
dc.subject | elasticity | en |
dc.subject | endovascular surgery | en |
dc.subject | hemodynamics | en |
dc.subject | hydrodynamics | en |
dc.subject | iliac artery | en |
dc.subject | kidney | en |
dc.subject | middle aged | en |
dc.subject | normal human | en |
dc.subject | pathology | en |
dc.subject | pressure | en |
dc.subject | procedures | en |
dc.subject | prosthesis design | en |
dc.subject | risk assessment | en |
dc.subject | shear strength | en |
dc.subject | stent | en |
dc.subject | treatment outcome | en |
dc.subject | very elderly | en |
dc.subject | x-ray computed tomography | en |
dc.subject | Aged | en |
dc.subject | Aged, 80 and over | en |
dc.subject | Aortic Aneurysm, Abdominal | en |
dc.subject | Biomechanical Phenomena | en |
dc.subject | Blood Flow Velocity | en |
dc.subject | Blood Vessel Prosthesis | en |
dc.subject | Blood Vessel Prosthesis Implantation | en |
dc.subject | Diastole | en |
dc.subject | Elasticity | en |
dc.subject | Endovascular Procedures | en |
dc.subject | Healthy Volunteers | en |
dc.subject | Hemodynamics | en |
dc.subject | Humans | en |
dc.subject | Hydrodynamics | en |
dc.subject | Iliac Artery | en |
dc.subject | Kidney | en |
dc.subject | Male | en |
dc.subject | Middle Aged | en |
dc.subject | Pressure | en |
dc.subject | Prosthesis Design | en |
dc.subject | Risk Assessment | en |
dc.subject | Shear Strength | en |
dc.subject | Stents | en |
dc.subject | Tomography, X-Ray Computed | en |
dc.subject | Treatment Outcome | en |
dc.subject | Taylor and Francis Ltd. | en |
dc.title | Comparison of physiological and post-endovascular aneurysm repair infrarenal blood flow | en |
dc.type | journalArticle | en |
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