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Prediction of deformations during endovascular aortic aneurysm repair using finite element simulation

Adrien Kaladji, Aurélien Dumenil, Miguel Castro, Alain Cardon, Jean-Pierre Becquemin, Benyebka Bou-Saïd, Antoine Lucas, Pascal Haigron
2013 Computerized Medical Imaging and Graphics  
The aim of the present study was to assess the feasibility of finite element simulation to predict arterial deformations during EVAR.  ...  The simulation consists of modeling the deformation induced by the stiff guidewire used during EVAR.  ...  Acknowledgments The authors are indebted to the Centre of Clinical Investigation and Technological Innovation 804 for its support in the processing of imaging data.  ... 
doi:10.1016/j.compmedimag.2013.03.002 pmid:23562493 fatcat:vbzlsielerfr5fpkknj7ctem34

Patient-specific simulation of endovascular repair surgery with tortuous aneurysms requiring flexible stent-grafts

David Perrin, Pierre Badel, Laurent Orgeas, Christian Geindreau, Sabine rolland du Roscoat, Jean-Noël Albertini, Stéphane Avril
2016 Journal of The Mechanical Behavior of Biomedical Materials  
One EVAR clinical case was numerically reproduced by simulating stent-graft models deployment inside the tortuous arterial model generated from patient pre-operative scan.  ...  Results were validated by comparing stents positions on simulations and post-operative scans.  ...  The authors would like to acknowledge the Région Rhône-Alpes for the financial support of D.  ... 
doi:10.1016/j.jmbbm.2016.06.013 pmid:27344232 fatcat:ugqn5ja2afdzhpuvyf26avejke

Design of a sensorized guiding catheter for in situ laser fenestration of endovascular stent

Roberta Piazza, Sara Condino, Aldo Alberti, Raffaella Nice Berchiolli, Gioachino Coppi, Marco Gesi, Vincenzo Ferrari, Mauro Ferrari
2017 Computer Assisted Surgery  
Finally, mechanical simulations were performed with CathCAD, a design software system for the development of composite tubing for endovascular catheters.  ...  CathCAD simulations allowed us to define the construction parameters (e.g., materials and geometric constrains) for the fabrication of composite tubes with mechanical properties (flexural, axial, and torsional  ...  Disclosure statement The authors report no conflicts of interest. The authors alone are responsible for the content and writing of this article.  ... 
doi:10.1080/24699322.2017.1358403 pmid:28758547 fatcat:3bpf7c7gjbeglicklxbxlctbxq

Finite-Element Based Image Registration for Endovascular Aortic Aneurysm Repair

Aymeric Pionteck, Baptiste Pierrat, Sébastien Gorges, Jean-Noël Albertini, Stéphane Avril
2020 Modelling  
The method relies on a 3D finite-element model (FEM) of the aortic centerline reconstructed from preoperative CT scans.  ...  Errors were estimated based on the predicted locations of landmarks positioned at different branch ostia.  ...  This may be simply induced by a different position of the patient or due to the insertion of guidewires.  ... 
doi:10.3390/modelling1010002 fatcat:cfggkc7s5ne7xd7kwyro3ppqeu

Improving Post-EVAR Surveillance with a Smart Stent-Graft [chapter]

Isa C. T. Santos, Alexandra T. Sepulveda, Júlio C. Viana, António J. Pontes, Brian L. Wardle, S. M. Sampaio, R. Roncon-Albuquerque, João Manuel R. S. Tavares, L. A. Rocha
2012 Lecture Notes in Computational Vision and Biomechanics  
Their treatment options involve either an invasive procedure or a minimally invasive one.  ...  In this chapter, the suitability of aneurysm sac pressure measurement for EVAR surveillance is evaluated using an AAA computer model.  ...  Roberto Guzman de Villoria for fabrication and testing assistance of the CNT-reinforced PDMS materials. CNT-based polymer composite materials were developed with funding from Airbus S. A.  ... 
doi:10.1007/978-94-007-4068-6_13 fatcat:ym72ednhezeelm5glfnqudphky

Non-Technical Skills in Surgical Disciplines: Communication Styles & Attitudes Towards Uncertainty and Risk in Surgical Staff, Trainees and Applicants: A Comparative Study

Bart Doyen, Isabelle Van Herzeele, Heidi Maertens, Peter Vlerick, Frank Vermassen
2019 European Journal of Vascular and Endovascular Surgery  
In the literature the percentage of shunt insertion during carotid endarterectomy varies from 4.5% to 28%.  ...  In the fenestrated case, the guidewire fixator was used to secure the distal position of the guidewire in the left subclavian artery, thereby obviating brachial access and a through-and-through guidewire  ...  Results -CTO are located on the external iliac artery (EIA) in 37 cases, on the common iliac artery (CIA) in 41 cases, on both in 42 cases and on the aortic bifurcation in 14 cases.  ... 
doi:10.1016/j.ejvs.2019.06.539 fatcat:wegy37u6nbdabeg4zlvypqhmwq

Abstract Book

2016 Annals of Vascular Diseases  
This value is determined as the cut-off value for prediction of brachiocephalic AVF maturation with a sensitivity of 95.45%, a specificity of 92.59% and 95.5% positive predictive value and 92.6% negative  ...  EVAR seems to be more advantageous in cases of emergency ruptured AAA rather than as an elective procedure.  ...  Familiarity with these and their modes of use and action can help in selecting the correct agent depending on the goal of embolization P07-32 Acute lower limb ischemia in a case of ischemic & valvular  ... 
doi:10.3400/avd.sup.16-00001 fatcat:s6hson7z3nhnrpykp4lybvknsu

Accelerated fatigue study of in situ fenestrated endovascular stent grafts deployed inside the 3D phantom of a patient's aortic arch aneurysm

Yao Tong, Tse Leonard, Tan Kongteng, Marks Steven, Robertson Ian, Mathews Kyle, Rust Jon, Soulez Gilles, Crawford Sean, King Martin
2016 Frontiers in Bioengineering and Biotechnology  
They are the thirteenth leading cause of death in the United States [1, 2]. Endovascular aneurysm repair (EVAR) has become a routine approach to treat aortic aneurysms.  ...  At the same time, an in situ fenestration technique is used to treat complex aortic aneurysms when the aneurysm involves vital adjoining arteries such as the renal arteries or left subclavian artery, and  ...  However, the fabrication of a patient-specific customized device has certain limitations in emergency cases.  ... 
doi:10.3389/conf.fbioe.2016.01.01217 fatcat:26fyyxdsujeedbrbb5pmrennzu


2007 Interactive Cardiovascular and Thoracic Surgery  
Results: One hundred and eighty patients of the total 192 were extubated in the operating room (177 in <20 min), while 12 cases were converted to standard fast track anesthesia during the operation.  ...  On-pump beating heart surgery seems to be the valid solution for these patients. We describe our clinical experience.  ...  University of Lodz, Lodz, Poland Objective: The aim of the study was the evaluation of the safety and efficacy of intraoperative ablation in patients with persistent atrial fibrillation (AF) subjected  ... 
doi:10.1510/icvts.2007.0000s1 fatcat:rshvucuq5fcbvg6qn3ctorv23i

ECTES-Abstracts 2017

2017 European Journal of Trauma and Emergency Surgery  
The surgical simulator showed that the entry point of the guidewire was anterior to the best entry point when a simulation was done.  ...  Results: The laparotomic group (30 patients) had 8 false positive (26,70%), the laparoscopic one (43 patients), had 28 false positive (62,15%).  ...  The patient was hemodynamically unstable: GCS 9, ISS 28 (brain and lung contusion). Resuscitation procedures and left leg traction were done initially.  ... 
doi:10.1007/s00068-017-0781-y pmid:28432398 fatcat:cqjzk62e2fawtje3nj4ovcldjq

SCAI-ACCi2 Interventional E-Abstracts

2008 Journal of the American College of Cardiology  
In 99 patients at least one valid LFI was obtained, with total of 459 successful LFI measurements. 94% of the patients tolerated at least 3 measurements with the occlusive stabilization balloon.  ...  The possibility of realizing this procedure in ambulatory form in stable patients and not having an acute infarct, could be an reasonable alternative in our patients population. Method.  ...  Simulations used a stabilized finite element solver. Time-averaged wall shear stress (SS) and PV were quantified and averaged over 2 mm increments.  ... 
doi:10.1016/j.jacc.2008.02.020 fatcat:mylgtu463zf7hnbeq2lgtg7sne

Computational analysis of the hemodynamic performance of novel endovascular and surgical procedures for complex aortic diseases

Yu Zhu, Xiao Yun Xu
The first part of this thesis focuses on evaluating the haemodynamic performance of novel BSG designs, including thoracoabdominal branch endoprosthesis (TAMBE) and dual-branched thoracic endograft.  ...  In addition, surgical replacement of the ascending aorta with a Dacron graft remains the gold standard for type A aortic dissection (TAAD), although 12% of patients are at risk of aortic rupture due to  ...  FSI simulation was performed on a patient with a stable aortic diameter (G1#5) whose FL merged with TL in the mid- Finite Element Modelling The mechanical behaviour of the wall follows its constitutive  ... 
doi:10.25560/95296 fatcat:a7oflrwi4vc6bm5lp3d3dvaazi

The surgeon and the musician☆

Pascal R. Vouhé
2011 European Journal of Cardio-Thoracic Surgery  
There is clearly clinical uncertainty about the best way to manage the risks of thromboembolism, and haemorrhage if treated with different antithrombotic regimes, after BAVR.  ...  There are no RCTs with adequate power to test the relative effectiveness of different treatments 2 , and there is manifest variation in practice 1 .  ...  The AITA simulation on a finite elements dilatated annulus root model was able to identify the 48% of the interleaflet triangles height (ITH) as the best place to perform the procedure in order to maximize  ... 
doi:10.1016/j.ejcts.2010.11.046 pmid:21163668 fatcat:fmw7igaahfho7e36ubc2y4fbgy

Abstracts for The European Society for Cardiovascular Surgery 54th International Congrees, Athens, Greece, May 19-22, 2005

2005 Interactive Cardiovascular and Thoracic Surgery  
The radial artery seems to be a good alternative in these cases, but, local complications and the presence of an important scar on the forearm limits the use of this graft.  ...  Results: 8 patients had a hematoma which disappeared after 2 weeks, one patient had a bleeding on the proximal stump which needed reoperation, one radial was not usable because of dissection, one patient  ...  One type I endoleak was immediately and successfully managed with the insertion of an extra graft. No life threatening events or deaths were recorded during the procedures or the in-hospital period.  ... 
doi:10.1510/icvts.2005.0000s1 fatcat:obiqznjmbzd5nowomv7kqfhtlu

Preoperative Surgical Planning

Johannes Ludwig Fauser
For the second example, robotically driven guidewires could significantly reduce the radiation exposure from fluoroscopy, that is exposed to patients and surgeons during navigation through the aorta.  ...  Such procedures minimize patient trauma, decrease hospital stay or reduce risk of infection.  ...  the building of a mesh for finite element simulation.  ... 
doi:10.25534/tuprints-00011752 fatcat:4slobdksjjggxpjcoaiqufbje4
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