Search results for "ANEURYSM"

Appropriateness of surgery performed for abdominal aortic aneurysm at tertiary hospitals in Spain

2021

Background: The aim of this study was to analyze the appropriateness of the type of repair (open or endovascular) performed for abdominal aortic aneurysm (AAA) in five university hospitals in Spain, according to evidence-based recommendations. Methods: A multicenter, retrospective cross-sectional study of patients with AAA who underwent elective open surgical repair (OSR) or endovascular aneurysm repair (EVAR). Data were collected on demographic and clinical variables and type of surgical repair. A pair of vascular surgeons from each participating hospital performed a blinded assessment based on GRADE recommendations. The concordance between the two evaluators and the agreement between thei…

Oxidative Stress in the Pathogenesis of Aorta Diseases as a Source of Potential Biomarkers and Therapeutic Targets, with a Particular Focus on Ascend…

2022

Aorta diseases, such as ascending aorta aneurysm (AsAA), are complex pathologies, currently defined as inflammatory diseases with a strong genetic susceptibility. They are difficult to manage, being insidious and silent pathologies whose diagnosis is based only on imaging data. No diagnostic and prognostic biomarkers or markers of outcome have been known until now. Thus, their identification is imperative. Certainly, a deep understanding of the mechanisms and pathways involved in their pathogenesis might help in such research. Recently, the key role of oxidative stress (OS) on the pathophysiology of aorta disease has emerged. Here, we describe and discuss these aspects by revealing some OS …

external iliac artery pseudoaneurysm complicating renal transplantation

2008

Automated Detection of Microaneurysms Using Scale-Adapted Blob Analysis and Semi-Supervised Learning

2014

International audience; Despite several attempts, automated detection of microaneurysm (MA) from digital fundus images still remains to be an open issue. This is due to the subtle nature of MAs against the surrounding tissues. In this paper, the microaneurysm detection problem is modeled as finding interest regions or blobs from an image and an automatic local-scale selection technique is presented. Several scale-adapted region descriptors are then introduced to characterize these blob regions. A semi-supervised based learning approach, which requires few manually annotated learning examples, is also proposed to train a classifier to detect true MAs. The developed system is built using only…

Is the sporadic thoracic aneurysm the result of inflammatory process

2014

Wewnątrznaczyniowe dwuetapowe leczenie tętniaków aorty brzusznej z użyciem Heli-FX EndoAnchor System

2019

Wstęp: Wyniki leczenia tętniaków aorty brzusznej mimo wprowadzenia nowych technik wewnątrznaczyniowych nadal nie zawsze są zadowalające. Szczególnie trudną grupą pacjentów są osoby z krótką oraz stożkową szyją. W tej grupie chorych często występuje w okresie pooperacyjnym przeciek typu I. Jedną z metod mających temu powikłaniu zapobiec jest zastosowanie wkrętów wewnątrznaczyniowych Heli-FX. Ma to zwiększyć przyleganie systemu stentgraftu do ściany aorty brzusznej oraz zapobiec jego ewentualnej migracji. Materiał i metody: Autorzy niniejszego artykułu proponują zastosowanie leczenia dwuetapowego. Pierwszy etap stanowiła implantacja przedłużki aortalnej tuż poniżej odejścia tętnic nerkowych i…

Intracranial Venous Alteration in Patients With Aneurysmal Subarachnoid Hemorrhage: Protocol for the Prospective and Observational SAH Multicenter St…

2022

BackgroundArterial vasospasm has been ascribed as the responsible etiology of delayed cerebral infarction in patients with aneurysmal subarachnoid hemorrhage (aSAH), but other neurovascular structures may be involved. We present the protocol for a multicenter, prospective, observational study focused on analyzing morphological changes in cerebral veins of patients with aSAH.Methods and AnalysisIn a retrospective arm, we will collect head arterial and venous CT angiograms (CTA) of 50 patients with aSAH and 50 matching healthy controls at days 0–2 and 7–10, comparing morphological venous changes. A multicenter prospective observational study will follow. Patients aged ≥18 years of any gender …

Genetic Factors as Promising Biomarkers of Sporadic Ascending Aortic Aneurysm

2014

Thoracic aorta shows various changes with advancing age and a progressive deterioration in structure and function. As a result, vascular remodeling (VR) and medial degeneration (MD) occur. VR and MD are typical entities of sporadic thoracic aortic aneurysm (TAA), actually considered a common and serious health risk and a pathology by unclear mechanisms. Increased activity of the coagulation system, inflammation, activation of extracellular matrix remodeling and endothelial dysfunction pathways have been recently evidenced to have a key role in its onset. Thus, polymorphisms of the coagulation system [fibrinogen (rs1800790); Factor II ( rs1799963); Factor V (rs6025); Factor VII (rs121964926)…

Periscope endograft technique to revascularize the left subclavian artery during thoracic endovascular aortic repair.

2013

Purpose: To present early and midterm results of the periscope endograft (PG) technique to maintain left subclavian artery (LSA) blood flow in thoracic endovascular aortic repairs (TEVAR) involving zone 3. Methods: From April 2010 to January 2013, 14 consecutive high-risk patients (11 men; mean age 7068 years, range 56–87) underwent TEVAR with the PG technique for 10 thoracic aortic aneurysms (TAA), 2 traumatic aortic ruptures, and 2 aortic dissections without a suitable landing zone (.2 cm distal to the LSA). Five procedures were performed emergently for rupture (3 TAAs and the 2 trauma cases). Two patients had a periscope deployed in an aberrant right subclavian artery. The periscope endo…

Pęknięty tętniak aorty zstępującej - duże wyzwanie dla niedużego ośrodka chirurgii naczyniowej

2018

Pacjentka, lat 76, została skierowana do Uniwersyteckiego Szpitala Klinicznego w Opolu z powodu podejrzenia rozwarstwienia aorty wstępującej i tamponady osierdzia. Przy przyjęciu chora w stanie ogólnym skrajnie ciężkim, z objawami głębokiego wstrząsu, niestabilna hemodynamicznie oraz wentylowana mechanicznie. W wykonanym doraźnie badaniu angio-TK stwierdzono rozwarstwienie aorty zstępującej z pękniętym tętniakiem w jej środkowym i dolnym odcinku oraz duży krwiak lewej jamy opłucnowej. Ze względu na znaczną szerokość aorty zstępującej, nawet w jej początkowym odcinku oraz aorty brzusznej powyżej pnia trzewnego do zaopatrzenia tętniaka potrzebne są dwa elementy stentgraftów o średnicy 46 mm. …