Dynamic Remeshing for Fluid Structure Interaction: Application to Modelling Aortic Dissection

2007 ◽  
Author(s):  
Keri R. Moyle ◽  
Yiannis Ventikos
Keyword(s):  
Aortic Dissection ◽  
Rate Increase ◽  
False Lumen ◽  
Aortic Aneurysms ◽  
True Lumen ◽  
Structure Interaction ◽  
Abdominal Aortic ◽  
Branch Vessel ◽  
Ruptured Abdominal Aortic Aneurysms ◽  
Acute Condition

Aortic dissection is an acute condition occurring more frequently than ruptured abdominal aortic aneurysms, with a mortality rate increase of 1% per hour if left untreated [1]. Dissection occurs following creation of an entrance tear, through which blood can force its way into the wall, forming a pocket that propagates longitudinally. The membrane of the dissection flap separates the true lumen (through which the organs are supplied with blood), from a false lumen (the pocket created by the dissection). The total obstruction of the true lumen by the motion of the vessel flap, or organ starvation due to branch vessel compression by the false lumen, can be fatal. Figure 1 shows an idealised representation of an aortic dissection model.

Regression of a Descending Thoracoabdominal Aortic Dissection following Staged Deployment of Thoracic and Abdominal Aortic Endografts

2002 ◽  
Vol 9 (2_suppl) ◽  
pp. II-92-II-97 ◽  
Author(s):  
Rodney A. White ◽  
Carlos Donayre ◽  
Irwin Walot ◽  
James Lee ◽  
George E. Kopchok
Keyword(s):  
Aortic Dissection ◽  
Stent Graft ◽  
False Lumen ◽  
Acute Chest Pain ◽  
Aortic Aneurysms ◽  
Abdominal Aneurysm ◽  
Entry Site ◽  
Abdominal Aortic ◽  
Thoracic And Abdominal ◽  
Thoracic Stent Graft

Purpose: To describe the successful endovascular repair and regression of an extensive descending thoracoabdominal aortic dissection associated with thoracic and abdominal aortic aneurysms. Case Report: An 83-year-old man presented with acute chest pain and shortness of breath. A descending thoracoabdominal aortic dissection that extended from near the left subclavian artery (LSA) to the right common iliac artery was found on computed tomography. Separate aneurysms in the thoracic and abdominal aorta were also identified. Staged endovascular procedures were undertaken to (1) close the single entry site and exclude the aneurysm in the thoracic aorta with an AneuRx thoracic stent-graft, (2) exclude the abdominal aneurysm and distal re-entry site with a bifurcated AneuRx endograft, and (3) treat a newly dilated thoracic segment between the LSA and first thoracic stent-graft. At 1 year, the false lumen had completely disappeared, the thoracic aneurysm had collapsed onto the endograft, and the abdominal aneurysm had shrunk by 30%. Conclusions: The potential to treat extensive aortic dissections with the hope that they might regress is promising, but repair of highly complex lesions involving one or more aneurysms in addition to the dissection requires meticulous imaging studies both preoperatively and intraprocedurally.

Spot Stenting Combined With False Lumen Endovascular Occlusive Repair for Post-dissection Abdominal Aortic Aneurysm

2021 ◽  
pp. 152660282110625
Author(s):  
Min Zhou ◽  
Fei Liu ◽  
Xiaolong Shu ◽  
Zhenyu Shi ◽  
Daqiao Guo ◽  
...  
Keyword(s):  
False Lumen ◽  
Aortic Aneurysms ◽  
Covered Stents ◽  
True Lumen ◽  
Iliac Arteries ◽  
Abdominal Aortic ◽  
Intermediate Outcomes ◽  
Visceral Arteries ◽  
Safe Technique

Purpose: To introduce a new spot stenting, combined with a false lumen endovascular occlusive repair (SS-FLEVOR) technique for treating post-dissection abdominal aortic aneurysms. Technique: This technique is demonstrated in a 74-year-old man who received an initial thoracic endovascular aortic repair 7 years ago and suffered from distal aortic expansion during the follow-up session. All the tears located more than 15 mm away from the orifice of visceral arteries were excluded by spot stenting in the aortic true lumen. Then, a compliant stent-graft was implanted in the false lumen to seal the tears near the visceral arteries orifice from the outside. In addition, coils were deployed to block the potential backflow from the intercostal arteries and to induce false lumen thrombosis. Moreover, visceral arteries originated from false lumen were repaired by covered-stents implanted from the true lumen. The distal iliac arteries were sealed either with iliac extensions or cover-stents. This new technique has been applied in 5 patients, resulting in 100% technical success and encouraging intermediate outcomes. Conclusion: SS-FLEVOR is a feasible and safe technique to promote false lumen thrombosis in selected cases.

Ruptured abdominal aortic aneurysms: Clinical presentation in Auckland 1993-1997

2001 ◽  
Vol 71 (6) ◽  
pp. 341-344
Author(s):  
Johanna Rose ◽  
Ian Civil ◽  
Timothy Koelmeyer ◽  
David Haydock ◽  
Dave Adams
Keyword(s):  
Clinical Presentation ◽  
Abdominal Aortic Aneurysms ◽  
Aortic Aneurysms ◽  
Abdominal Aortic ◽  
Ruptured Abdominal Aortic Aneurysms

Endovascular management of ruptured abdominal aortic aneurysms and acute aortic dissections

VASA ◽  
2019 ◽  
Vol 48 (1) ◽  
pp. 35-46
Author(s):  
Stephen Hofmeister ◽  
Matthew B. Thomas ◽  
Joseph Paulisin ◽  
Nicolas J. Mouawad
Keyword(s):  
Abdominal Aortic Aneurysms ◽  
Rapid Identification ◽  
Aortic Aneurysms ◽  
Endovascular Interventions ◽  
Current State ◽  
Technological Advances ◽  
Abdominal Aortic ◽  
Ruptured Abdominal Aortic Aneurysms ◽  
Vascular Emergencies ◽  
Aortic Dissections

Abstract. The management of vascular emergencies is dependent on rapid identification and confirmation of the diagnosis with concurrent patient stabilization prior to immediate transfer to the operating suite. A variety of technological advances in diagnostic imaging as well as the advent of minimally invasive endovascular interventions have shifted the contemporary treatment algorithms of such pathologies. This review provides a comprehensive discussion on the current state and future trends in the management of ruptured abdominal aortic aneurysms as well as acute aortic dissections.

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