Search results for "Aortic Aneurysm"

CT-Angiographie versus intraarterielle DSA bei Bauchaortenaneurysmen

1996

PURPOSE To evaluate if CT angiography is able to image all features necessary for the preoperative planning of abdominal aortic aneurysms (accessory renal arteries, stenoses or occlusions of renal and iliac arteries, patency of inferior mesenteric artery). METHODS CT angiography and DSA were performed on 27 patients with abdominal aortic aneurysms. CT angiography was performed using a protocol that covered the abdominal aorta and the pelvic arteries with a single spiral acquisition (contrast dose: 150 ml, collimation: 5 mm, table feed: 7.5 mm/s, increment of reconstruction: 2 mm). Maximum intensity projections (MIP) and axial scans were compared with the results of intraarterial DSA. RESULT…

Involvement of the aorta in brucellosis: the forgotten, life-threatening complication. A systematic review.

2012

Abstract Human brucellosis is a disease of protean manifestations, and has been implicated in complications and focal disease in many human organ systems. However, little is collectively known about the background, the course, the clinical characteristics, the diagnostic issues raised, and the short- and long-term therapeutic approaches in patients with aortic involvement as a complication of brucellosis. With the aim to glean from the literature useful information to better understand and manage this complication, a computerized search without language restriction was conducted using PubMed and SCOPUS. An article was considered eligible for inclusion in the systematic review if it reported…

Genetic contribution in sporadic thoracic aortic aneurysm? Emerging evidence of genetic variants related to TLR-4-mediated signaling pathway as risk …

2015

Abstract Sporadic thoracic aortic aneurysms (TAA) and dissections are one of the major causes of morbidity and mortality worldwide, especially in those older than 65 years. The presentation of TAA is varied and often silent. Thus, sporadic TAA detection is often fortuitous, with identification occurring during a routine physical examination or during an unrelated medical evaluation. Once suspected, confirmation by imaging clinical approaches is needed to allow the choose of the unique treatments for TAA, namely the surgery procedures, including elective surgery or endovascular repair before the onset of catastrophic and fatal complications, such as dissection or rupture. At present, there a…

Patient-Specific Analysis of Ascending Thoracic Aortic Aneurysm with the Living Heart Human Model

2021

In ascending thoracic aortic aneurysms (ATAAs), aneurysm kinematics are driven by ventricular traction occurring every heartbeat, increasing the stress level of dilated aortic wall. Aortic elongation due to heart motion and aortic length are emerging as potential indicators of adverse events in ATAAs

Biomechanics of human ascending aorta and aneurysm rupture risk assessment

2021

Ascending aortic aneurysms (AsAA) and aortic dissections are life-threatening cardiovascular diseases. The main criteria for determining surgical intervention of AsAA are the maximum diameter or the increasing annual rate of the aneurysm. The mortality of the untreated aortic dissection can be 21% to 74%, depending on the delay of hospital admission.Our study aims to characterize the biomechanical properties of the ascending aorta and propose a patient-specific approach to assess the risks of rupture. The purpose of this PhD work is multifold.On the one hand, biaxial tensile tests were performed on AsAA samples obtained from one hundred patients with surgery of AsAA. The impact on the diffe…

Endovaskuläre Behandlung akuter Erkrankungender thorakalen Aorta

2002

Purpose To investigate the safety and efficacy of emergency treatment of acute aortic diseases with endovascular stent grafts. Methods In 11 patients (median age 55 years, range 18 - 85) with acute complications of descending aortic diseases endovascular emergency treatment was performed: traumatic aortic rupture (n = 4), penetrating ulcer with aortobronchial fistula or hematothorax (n = 4), acute type B dissection (n = 2, one with penetration, one with subacute mesenteric ischemia), and symptomatic aneurysm of the thoracic aorta (n = 1) with pain and diameter progression. 15 stent grafts were implanted (Talent n = 11, Vanguard/Stentor n = 4). Stent extension was necessary in 4 cases. In 2 …

Trans-catheter thrombolysis and endovascular relining to treat acute stent graft limb occlusion: technical report

2012

Emergency endovascular repair of an acute aortocaval fistula with AAA: Case report and review of the literature

2009

A 72-year-old man with sudden abdominal pain and congestive cardiac failure presented a high-flow aortocaval fistula with a large abdominal aortic aneurysm as detected by Duplex ultrasonography and computed tomography angiography. As the patient’s multiple comorbidities precluded open repair, an emergency left aortouniiliac stent-graft deployment and femoro-femoral crossover bypass grafting were performed. Notwithstanding, incomplete exclusion of the fistula due to a small inflow from the contralateral iliac axis, the patient’s cardiac overload decreased with a rapid resolution of cardiac failure, allowing for a staged ligation of the right iliac artery with a complete occlusion of the aort…

Aprūpe intensīvās terapijas nodaļā pacientiem pēc akūtas operācijas sakarā ar abdominālās aortas aneirismas plīsumu

2017

Darba tēma: ‘’ Aprūpe pacientiem intensīvās terapijas nodaļā pēc akūtas operācijas sakarā ar abdominālās aortas aneirismas plīsumu ‘’ . Bakalaura darbs izstrādāts ar mērķi noskaidrot pacientu aprūpi intensīvās terapijas nodaļā pēc akūtas operācijas sakarā ar abdominālās aortas aneirismas plīsumu. Pētniecības jautājums ir - Kāda ir aprūpe intensīvās terapijas nodaļā pacientiem pēc akūtas operācijas sakarā ar abdominālās aortas aneirismas plīsumu? Pētniecības uzdevumi ir veikt literatūras analīzi par vēdera aortas aneirismu, izstrādāt kvalitatīvo pētījumu ar tā instrumentu – intervijas jautājumus, analizēt un apkopot iegūto informāciju, veikt secinājumus. Pētniecības darbs balstīts uz Dorotej…

Ascending Aorta Resection and End-to-End Anastomosis: Redistribution of Wall Shear Stress Induced by a Bioprosthetic Heart Valve

2020

Although aortic resection and end-to-end anastomosis are applied to repair ascending aortic aneurysm, there is a lack of information on the late risk of post-operative complications, such as aortic dissection and aneurysmal re-dilatation. It is recognized that altered hemodynamic forces exerted on an aortic wall play an important role on dissection and aneurysm formation. We present a case in which the hemodynamic forces were investigated prior and after repair of an ascending aorta treated by resection with end-to-end anastomosis and a bioprosthetic heart valve. Post-operative wall shear stress was redistributed uniformly along the vessel circumference, and this may suggest a reduced risk …