نتایج جستجو برای: endograft obstraction
تعداد نتایج: 838 فیلتر نتایج به سال:
The role of transesophageal echocardiography in endovascular repair of traumatic aortic transection.
Traumatic rupture of the thoracic aorta is a leading cause of death, following major blunt trauma, and endovascular repair has evolved as a viable alternative to open repair. This report highlights the role of transesophageal echocardiography as a valuable imaging tool for locating the exact position of the lesion, guiding placement of the endograft, detecting leaks around it and supplementing ...
Aortic deceleration injury is a common and critical condition following automobile accident with high fatality. The survivors complicated with associated serious injuries are even rare and definitive treatment is required. A 37-year-old male patient had both aortic blunt injury and coronary artery injury after a frontal car collision. After failed coronary artery percutaneous transluminal angio...
PURPOSE To evaluate the biomechanical and hemodynamic forces acting on the intermodular junctions of a multi-component thoracic endograft and elucidate their influence on the development of type III endoleak due to disconnection of stent-graft segments. METHODS Three-dimensional computer models of the thoracic aorta and a 4-component thoracic endograft were constructed using postoperative (ba...
PURPOSE To report long-term outcome when using a bifurcated aortic endograft for treatment of aortoiliac occlusive disease (AIOD) in Trans Atlantic Inter Society Consensus (TASC) classification C and D patients. MATERIALS AND METHODS Between May 2001 and May 2009, 14 patients (11 men, 3 women) with aortoiliac TASC C and D type lesions and a mean age of 59 years ± 10 (range 41-73 years) were t...
BACKGROUND We describe our 8-year experience with the use of endovascular techniques (ET) for the treatment of abdominal aortic aneurysms (AAA) through a straight endograft. METHODS We retrospectively reviewed data of all patients who were treated for AAA using ET in two centres from 1998 to 2012 and who received a single straight endograft (group A) or a double straight tube (group B). Outco...
A ruptured thoracic aorta is a rare but lifethreatening condition requiring immediate intervention. Possible causes of a ruptured thoracic aorta are ruptured descending thoracic aneurysms, acute type B aortic dissections, penetrating aortic ulcers, and traumatic thoracic aortic injuries (TTAI). Thoracic endovascular aortic repair (TEVAR) offers an effective treatment for these acute thoracic ao...
OBJECTIVE To measure the pulsatility of human aneurysms before and after complete exclusion with an endograft. METHOD Five aortic aneurysms obtained during necropsy were submitted to pulsatile perfusion before and after implantation of a bifurcated endograft. The specimens were contained in a closed chamber filled with saline solution. A vertical tube attached to the chamber was used to measu...
PURPOSE To examine the feasibility of a direct videoscopic approach to the descending thoracic aorta for endograft delivery to the aortic arch. METHODS A double purse-string suture was placed on the aorta of 3 pigs via a thoracoscopic approach. Subsequently, the aorta was cannulated in the center of the purse-string. A 22-F delivery catheter was advanced under fluoroscopic control over a guid...
PURPOSE To assess 3-dimensional (3D) pulsatile displacement forces (DF) acting on thoracic endografts using 3D computational techniques. METHODS A novel computational method to quantitate the pulsatile 3D flow and pressure fields and aortic wall dynamics in patient-specific anatomical models based on cardiac-gated computed tomography (CT) scans was used to construct simulations of the proxima...
PURPOSE Most endografts for an endoluminal AAA repair cannot achieve an adequate hemostatic seal in ectatic common iliac arteries larger than 14 mm. The extension of the endograft into the external iliac artery can alleviate this problem but requires sacrifice of the internal iliac artery. We have used the larger diameter aortic extension cuff to obtain adequate endograft to arterial wall appos...
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