View clinical trials related to Abdominal Aortic Aneurysm.
Filter by:Late endovascular abdominal aneurysm repair (EVAR) complications not amenable to endovascular correction can undergo either late open conversion (LOC) or semi-conversion (SC). LOC is defined as a total or partial endograft explantation >30 days after the initial EVAR. SC is defined as open or laparoscopic surgery for endoleak (EL) correction with complete endograft preservation. The aim of this study is to collect in a prospective database the technical aspects of a multicenter experience of LOC and SC, and to analyse early and long-term outcomes of these two treatments.
Abdominal Aortic Aneurysm (AAA) is a known vascular entity that may be life threatening condition .The most common treatment approach nowadays is the endovascular approach, a procedure known as endovascular aortic repair (EVAR). The most common procedure related complication is the expansion of the aneurysm from a "feeding vessel", usually a lumbar or intercostal artery. Another known complication is an endoleak from the stentgraft.Today, accepted EVAR follow up protocol consists of one multiple multiphasic CT angiography (CTA) scan, one month after the procedure and ultrasound exams there after . Ultrasonography is a useful method for detection and evaluation of AAA, has no ionizing radiation and is useful for the dynamic estimation of the aortic width in patients post EVAR. However, the sensitivity of ultrasonography solely for detection of endoleaks in post EVAR patients is not high.In recent years, the development of "fusion" applications allows the dual modality merge between ultrasound and CT scans that can be used as follow up examinations of known imaging findings on CT .Another application that had been developed for ultrasound machines is the ability to generate a 3 dimensional (3D) reconstruction which allows more precision. In the recent year the usage of intravenous contrast agent for ultrasonography based on microbubbles (BRACO SONOVIEW) has been approved by the Israeli ministry of health. This contrast agent is not nephrotoxic and the risk for allergic reaction is very low statistically similar to Gadolinium.A 3D contrast enhanced ultrasonography "fused" together with CTA may be a helpfull addition , which lacks radiation and odine contrast reactions and nephrotoxicity ,in the follow up in post EVAR patients , by means of identifing endoleaks at an earlier stage than by ultrasound alone. The purpose of our research is to evaluate the combined modality (fusion of CTA with CEUS) mentioned above in identifing early endoleaks in post EVAR patients and thus enabilng early intervention when needed
This study will assess the safety and efficacy of systemic (IV) administration of escalating doses of allogeneic MSCs in modulating immune cell phenotypes and suppressing aortic inflammation in patients with small AAA. Subjects will be randomized in a 1:1:1 fashion to receive mesenchymal stromal cells (1 million or 3 million MSC/kg) intra-venously or placebo (Plasmalyte A).
To investigate the influence of limb remote ischemic preconditioning (LRIP) on mortality, hospitalization costs and quality of life in patients undergoing open infrarenal abdominal aortic aneurysm (AAA) repair.