scholarly journals Spatial Configuration of Abdominal Aortic Aneurysm Analysis as a Useful Tool for the Estimation of Stent-Graft Migration

Diagnostics ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 737
Author(s):  
Andrzej Polanczyk ◽  
Aleksandra Piechota-Polanczyk ◽  
Ludomir Stefańczyk ◽  
Michał Strzelecki
Keyword(s):  
Abdominal Aortic Aneurysm ◽  
Aortic Aneurysm ◽  
Stent Graft ◽  
Spatial Configuration ◽  
3D Models ◽  
Mathematical Algorithm ◽  
Abdominal Aortic ◽  
Before And After ◽  
Graft Migration ◽  
Short Body

The aim of this study was to prepare a self-made mathematical algorithm for the estimation of risk of stent-graft migration with the use of data on abdominal aortic aneurysm (AAA) size and geometry of blood flow through aneurysm sac before or after stent-graft implantation. AngioCT data from 20 patients aged 50–60 years, before and after stent-graft placement in the AAA was analyzed. In order to estimate the risk of stent-graft migration for each patient we prepared an opposite spatial configuration of virtually reconstructed stent-graft with long body or short body. Thus, three groups of 3D geometries were analyzed: 20 geometries representing 3D models of aneurysm, 20 geometries representing 3D models of long body stent-grafts, and 20 geometries representing 3D models of short body stent-graft. The proposed self-made algorithm demonstrated its efficiency and usefulness in estimating wall shear stress (WSS) values. Comparison of the long or short type of stent-graft with AAA geometries allowed to analyze the implants’ spatial configuration. Our study indicated that short stent-graft, after placement in the AAA sac, generated lower drug forces compare to the long stent-graft. Each time shape factor was higher for short stent-graft compare to long stent-graft.

Stent-Graft Migration After Endovascular Repair of Abdominal Aortic Aneurysm

2002 ◽  
Vol 9 (6) ◽  
pp. 743-747 ◽  
Author(s):  
Stavros Kalliafas ◽  
Jean-Noel Albertini ◽  
Jan Macierewicz ◽  
Syed W. Yusuf ◽  
Simon C. Whitaker ◽  
...  
Keyword(s):  
Abdominal Aortic Aneurysm ◽  
Aortic Aneurysm ◽  
Stent Graft ◽  
Endovascular Repair ◽  
Abdominal Aortic ◽  
Graft Migration

Effects of stent-graft geometry and blood hematocrit on hemodynamic in Abdominal Aortic Aneurysm

2012 ◽  
Vol 33 (1) ◽  
pp. 53-61 ◽  
Author(s):  
Andrzej Polańczyk ◽  
Marek Podyma ◽  
Ludomir Stefańczyk ◽  
Ireneusz Zbiciński
Keyword(s):  
Blood Flow ◽  
Abdominal Aortic Aneurysm ◽  
Aortic Aneurysm ◽  
Numerical Simulations ◽  
Stent Graft ◽  
Spatial Configuration ◽  
Graft Occlusion ◽  
Abdominal Aortic ◽  
Endovascular Prosthesis ◽  
Spatial Configurations

Effects of stent-graft geometry and blood hematocrit on hemodynamic in Abdominal Aortic Aneurysm CFD technique was used to determine the effect of a stent-graft spatial configuration and hematocrit value on blood flow hemodynamic and the risk of a stent-graft occlusion. Spatial configurations of an endovascular prosthesis placed in Abdominal Aortic Aneurysm (AAA) for numerical simulations were developed on the basis of AngioCT data for 10 patients. The results of calculations showed that narrows or angular bends in the prosthesis as well as increased hematocrit affects blood flow reducing velocity and WSS which might result in thrombus development.

scholarly journals Management of a Mycotic Aneurysm in a Patient with COVID-19: A Case Report

Medicina ◽  
2021 ◽  
Vol 57 (6) ◽  
pp. 620
Author(s):  
Muzammil H. Syed ◽  
Mark Wheatcroft ◽  
Danny Marcuzzi ◽  
Hooman Hennessey ◽  
Mohammad Qadura
Keyword(s):  
Abdominal Aortic Aneurysm ◽  
Aortic Aneurysm ◽  
Stent Graft ◽  
Mycotic Aneurysm ◽  
Neurological Deficits ◽  
Endovascular Stent ◽  
Endovascular Stents ◽  
Abdominal Aortic ◽  
Short Period

The aim of this paper is to share our experience in managing a patient with Klebsiella pneumoniae mycotic abdominal aortic aneurysm who was also infected with COVID-19. A 69-year-old male was transferred to our hospital for the management of an infra-renal mycotic abdominal aortic aneurysm. During his hospital course, the patient contracted severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). He was intubated due to respiratory distress. Over a short period, his mycotic aneurysm increased in size from 2.5 cm to 3.9 cm. An emergency repair of his expanding aneurysm was achieved using our previously described protocol of coating endovascular stents with rifampin. The patient was managed with a rifampin-coated endovascular stent graft without any major complications. Postoperatively, the patient did not demonstrate any neurological deficits nor any vascular compromise. He remained afebrile during his postoperative course and was extubated sometime thereafter. He was then transferred to the ward for additional monitoring prior to his discharge to a rehab hospital while being on long-term antibiotics. During his hospital stay, he was monitored with serial ultrasounds to ensure the absence of abscess formation, aortic aneurysm growth or graft endoleak. At 6 weeks after stent graft placement, he underwent a CT scan, which showed a patent stent graft, with a residual sac size of 2.5 cm without any evidence of abscess or endoleak. Over a follow-up period of 180 days, the patient remained asymptomatic while remaining on long-term antibiotics. Thus, in patients whose surgical risk is prohibitive, endovascular stent grafts can be used as a bridge to definitive surgical management.

scholarly journals Aortoduodenal fistula and associated rupture of abdominal aortic aneurysm after endoluminal stent graft repair

2003 ◽  
Vol 37 (2) ◽  
pp. 465-468 ◽  
Author(s):  
Suresh Alankar ◽  
Merle H. Barth ◽  
David D. Shin ◽  
Janice R. Hong ◽  
Wade R. Rosenberg
Keyword(s):  
Abdominal Aortic Aneurysm ◽  
Aortic Aneurysm ◽  
Stent Graft ◽  
Aortoduodenal Fistula ◽  
Abdominal Aortic ◽  
Stent Graft Repair ◽  
Endoluminal Stent
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