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ruptured abdominal aortic aneurysm

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https://www.readbyqxmd.com/read/28096831/predeployed-aortic-extension-cuff-kilt-in-evar-with-hostile-neck-anatomy-using-endurant-ii-system-preliminary-results
#1
Krzysztof Szaniewski, Magdalena Biernacka, Ryszard L Walas, Marian Zembala
INTRODUCTION: Various modifications of standard endovascular aortic aneurysm repair (EVAR) have been developed to solve the problem of difficult neck anatomy. AIM: The authors propose the implantation of a predeployed extension cuff (kilt) using on-shelf Endurant II elements. In a vast majority of cases, the proposed method provides a solution for the hostile neck problem using standard Endurant II elements available in all centers performing subrenal EVAR procedures...
December 2016: Kardiochirurgia i Torakochirurgia Polska, Polish Journal of Cardio-Thoracic Surgery
https://www.readbyqxmd.com/read/28095402/a-general-shear-dependent-model-for-thrombus-formation
#2
Alireza Yazdani, He Li, Jay D Humphrey, George Em Karniadakis
Modeling the transport, activation, and adhesion of platelets is crucial in predicting thrombus formation and growth following a thrombotic event in normal or pathological conditions. We propose a shear-dependent platelet adhesive model based on the Morse potential that is calibrated by existing in vivo and in vitro experimental data and can be used over a wide range of flow shear rates ([Formula: see text]). We introduce an Eulerian-Lagrangian model where hemodynamics is solved on a fixed Eulerian grid, while platelets are tracked using a Lagrangian framework...
January 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28087488/cathepsin-k-targeted-sub-micron-particles-for-regenerative-repair-of-vascular-elastic-matrix
#3
Brenton Jennewine, Jonathan Fox, Anand Ramamurthi
: Abdominal Aortic Aneurysms (AAA) involve slow dilation and weakening of the aortic wall due to breakdown of structural matrix components, such as elastic fibers by chronically overexpressed matrix metalloproteinases (MMPs), primarily, MMPs-2 and -9. Auto-regenerative repair of disrupted elastic fibers by smooth muscle cells (SMCs) at the AAA site is intrinsically poor and together with chronic proteolysis prevents restoration of elastin homeostasis, necessary to enable AAA growth arrest or regression to a healthy state...
January 10, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28062500/translational-relevance-and-recent-advances-of-animal-models-of-abdominal-aortic-aneurysm
#4
Jean Senemaud, Giuseppina Caligiuri, Harry Etienne, Sandrine Delbosc, Jean-Baptiste Michel, Raphaël Coscas
Human abdominal aortic aneurysm (AAA) pathophysiology is not yet completely understood. In conductance arteries, the insoluble extracellular matrix, synthesized by vascular smooth muscle cells, assumes the function of withstanding the intraluminal arterial blood pressure. Progressive loss of this function through extracellular matrix proteolysis is a main feature of AAAs. As most patients are now treated via endovascular approaches, surgical AAA specimens have become rare. Animal models provide valuable complementary insights into AAA pathophysiology...
January 5, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28062419/contained-ruptured-abdominal-aortic-aneurysm-presenting-as-cauda-equina-syndrome
#5
Serge A Engamba, Dovile Garaleviciene, Jonathan Baldry
This is the case report of a contained ruptured aortic aneurysm presenting with acute cauda equina syndrome. The patient was a 79-year-old man. A literature search revealed various unusual presentations of abdominal aortic aneurysm (AAA), including femoral neuropathy, hip pain and others; however, there are no other reports of cauda equina-like syndrome. The present case is therefore another unusual presentation of ruptured abdominal aortic aneurysm and reiterates the utmost importance of careful history taking and clinical examination...
January 6, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28058986/midterm-results-of-proximal-aneurysm-sealing-with-the-ovation-stent-graft-according-to-on-vs-off-label-use
#6
Gianmarco de Donato, Francesco Setacci, Luciano Bresadola, Patrizio Castelli, Roberto Chiesa, Nicola Mangialardi, Giovanni Nano, Carlo Setacci
PURPOSE: To compare the use of the Ovation stent-graft according to the ≥7-mm neck length specified by the original instructions for use (IFU) vs those treated off-label (OL) for necks <7 mm long. METHODS: A multicenter retrospective registry (TriVascular Ovation Italian Study) database of all patients who underwent endovascular aneurysm repair with the Ovation endograft at 13 centers in Italy was interrogated to identify patients with a minimum computed tomography (CT) follow-up of 24 months, retrieving records on 89 patients (mean age 76...
January 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28042554/chronological-change-of-the-sac-after-endovascular-aneurysm-repair
#7
Min Hyun Kim, Hyung Sub Park, Sanghyun Ahn, Sang-Il Min, Seung-Kee Min, Jongwon Ha, Taeseung Lee
PURPOSE: The purpose of this study was to evaluate the potential risk factors of type II endoleak and sac growth after endovascular aneurysm repair (EVAR) and the outcomes of secondary interventions. MATERIALS AND METHODS: Ninety seven patients underwent elective EVAR for infrarenal abdominal aortic aneurysms in two tertiary centers between April 2005 and July 2013. Clinical and imaging parameters were compared among sac growth (>5 mm) and non-growth groups. Risk factors associated with sac growth and persistent type II endoleak were analyzed...
December 2016: Vascular Specialist International
https://www.readbyqxmd.com/read/28035354/identification-of-a-missense-mutation-of-col3a1-in-a-chinese-family-with-atypical-ehlers-danlos-syndrome-using-targeted-next-generation-sequencing
#8
Wenwen Zhang, Qian Han, Min Zhou, Feng Ran, Tong Qiao, Long Yi, Changjian Liu, Zhao Liu
Aortopathy represents an important cause of mortality in industrialized countries, with a number of genes identified as predispose factors. It can be difficult to identify the genetic lesions underlying this disorder, particularly when the phenotype is atypical. The present study performed targeted next‑generation sequencing of 428 genes associated with cardiovascular diseases in a family with aortopathy, the proband of which presented with abdominal aortic aneurysm rupture only, with tissue fragility noted in surgery...
February 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28034585/maximal-aortic-diameter-affects-outcome-after-endovascular-repair-of-abdominal-aortic-aneurysms
#9
Ying Huang, Peter Gloviczki, Audra A Duncan, Manju Kalra, Gustavo S Oderich, Mark D Fleming, William S Harmsen, Thomas C Bower
OBJECTIVE: The purpose of this study was to evaluate whether maximal aortic diameter affects outcome after endovascular aneurysm repair (EVAR) of abdominal aortic aneurysm (AAA). METHODS: Clinical data of patients undergoing EVAR between 1997 and 2011 for nonruptured asymptomatic AAAs in a tertiary center were reviewed. Patients were classified according to diameter of AAA: group 1, <5.0 cm; group 2, 5.0 to 5.4 cm; group 3, 5.5 to 5.9 cm; and group 4, ≥6...
December 26, 2016: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28031677/durable-results-with-in-situ-graft-repair-of-ruptured-salmonella-aneurysm-in-a-patient-with-autoimmune-deficiency-syndrome
#10
Patrick C Thompson, Lisa Wang, Jesse Columbo, Andres Schanzer, William P Robinson
We describe a case of a 42-year-old male patient with advanced autoimmune deficiency syndrome (AIDS) (CD4 count of 16 cells/mm(3)) found to have a ruptured infected infrarenal aortic aneurysm. Emergent in situ repair was performed with a Hemashield Dacron graft (Boston Scientific, Natick, MA). Aortic tissue cultures grew group D Salmonella. Patient was placed initially on intravenous ciprofloxacin followed by lifelong oral levofloxacin and trimethoprim. Over 2 years following repair, he remains asymptomatic, with repair intact and no recurrent infection...
December 2016: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/28031673/conservative-treatment-of-an-infected-aortic-graft-with-antibiotic-irrigation
#11
M Akhtar, L Meecham, R Birkett, A D P Pherwani, J F Fairhead
Conservative management of an aortic graft infection is defined as "the nonresectional treatment of an aortic graft that has an established infection." Incidence of aortic graft infections is 0.5 to 5% and the estimated mortality rate from aortic graft infections ranges from 8 to 27%. We present the case of a 73-year-old male patient with an infected abdominal aortic graft following an emergency ruptured abdominal aortic aneurysm repair. Postemergency repair, he developed ischemic colitis with sigmoid colon perforation leading to fecal peritonitis and secondary sepsis...
December 2016: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/28031651/spontaneous-retroperitoneal-hematoma-simulating-ruptured-infrarenal-aortic-aneurysm-in-a-patient-with-end-stage-renal-disease
#12
Jyy Li, Y C Chan, K X Qing, S W Cheng
We reported a case of spontaneous retroperitoneal hematoma (SRH) simulating a ruptured infrarenal aortic aneurysm. A 72-year-old man with a history of infrarenal aortic aneurysm and end-stage renal disease on hemodialysis presented with malaise and nonspecific central abdominal pain and left loin discomfort. An emergency computed tomography scan showed a large retroperitoneal hematoma and clinical suspicion of ruptured infrarenal aortic aneurysm. However, the hematoma was discontinuous with the aneurysm sac and raised the clinical suspicion on dual pathology...
December 2016: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/28029566/midterm-results-of-the-fenestrated-anaconda-endograft-for-short-neck-infrarenal-and-juxtarenal-abdominal-aortic-aneurysm-repair
#13
Louise L Blankensteijn, Martijn L Dijkstra, Ignace F J Tielliu, Michel M P J Reijnen, Clark J Zeebregts
OBJECTIVE: The fenestrated Anaconda endograft (Vascutek, Renfrewshire, Scotland) was introduced in 2010 and showed promising short-term results with high technical success and low morbidity rates. The aim of this study was to present the midterm results, with a minimum of 12 months follow-up, for all patients treated with the fenestrated Anaconda endograft in The Netherlands. METHODS: Patients treated with the fenestrated Anaconda endograft between May 2011 and February 2015 were included...
October 28, 2016: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28028979/a-controlled-trial-of-the-efficacy-of-a-training-walking-program-in-patients-recovering-from-abdominal-aortic-aneurysm-surgery
#14
Bartosz R Wnuk, Jacek Durmała, Krzysztof Ziaja, Przemysław Kotyla, Marek Woźniewski, Edward Błaszczak
BACKGROUND: Major surgical procedures as well as general anesthesia contribute to muscle weakness and posture instability and may result in increased postoperative complications and functional disorders resulting from an elective operation. OBJECTIVES: We aim to state the significance of backward walking as a form of interval march training with patients after abdominal aortic aneurysm surgery. MATERIAL AND METHODS: Sixty-five patients were randomly divided into three subgroups and three various models of physiotherapy were applied...
November 2016: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28027891/ruptured-abdominal-aortic-aneurysm-post-evas-nellix-explantation
#15
M Cherchi, S Camparini
No abstract text is available yet for this article.
December 24, 2016: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28018814/spontaneous-rupture-of-a-mediastinal-bronchial-artery-aneurysm-induced-by-anticoagulant-agent
#16
Zhimin Wang, Chenghua Xu, Xiaoxiao Ding, Jinying Chen, Huaping Xin
Nontraumatic spontaneous rupture of a bronchial artery aneurysm is rarely seen. In this report, we described such a phenomenon in a patient induced by usage of anticoagulant agent. The patient had no antecedent history of trauma, hypertension, or apparent aortic pathology. The patient who had been taking low-molecular-weight heparin and warfarin to treat deep vein thrombosis complained of a sudden upper abdomen pain with shortness of breath and hypoxemia. The patient was diagnosed and treated for an acute hemomediastinum caused by a ruptured bronchial artery aneurysm...
December 2016: Thoracic and Cardiovascular Surgeon Reports
https://www.readbyqxmd.com/read/28010870/few-internal-iliac-artery-aneurysms-rupture-under-4%C3%A2-cm
#17
Matti T Laine, Martin Björck, C Barry Beiles, Zoltán Szeberin, Ian Thomson, Martin Altreuther, E Sebastian Debus, Kevin Mani, Gábor Menyhei, Maarit Venermo
OBJECTIVE: This study investigated the diameter of internal iliac artery (IIA) aneurysms (IIAAs) at the time of rupture to evaluate whether the current threshold diameter for elective repair of 3 cm is reasonable. The prevalence of concomitant aneurysms and results of surgical treatment were also investigated. METHODS: This was a retrospective analysis of patients with ruptured IIAA from seven countries. The patients were collected from vascular registries and patient records of 28 vascular centers...
January 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/27995569/fourier-transform-infrared-spectroscopic-imaging-derived-collagen-content-and-maturity-correlates-with-stress-in-the-aortic-wall-of-abdominal-aortic-aneurysm-patients
#18
Rabee Cheheltani, Joseph E Pichamuthu, Jayashree Rao, Justin S Weinbaum, Mohammad F Kiani, David A Vorp, Nancy Pleshko
Abdominal aortic aneurysm (AAA) is a degenerative disease of the aorta characterized by severe disruption of the structural integrity of the aortic wall and its major molecular constituents. From the early stages of disease, elastin in the aorta becomes highly degraded and is replaced by collagen. Questions persist as to the contribution of collagen content, quality and maturity to the potential for rupture. Here, using our recently developed Fourier transform infrared imaging spectroscopy (FT-IRIS) method, we quantified collagen content and maturity in the wall of AAA tissues in pairs of specimens with different wall stresses...
December 19, 2016: Cardiovascular Engineering and Technology
https://www.readbyqxmd.com/read/27989316/treating-iliac-aneurysm-using-the-nellix-endovascular-sac-sealing-system
#19
REVIEW
Marwan Youssef, Sebastian Zerwes, Rudolf Jakob, Fritz Dünschede, Bernhard Dorweiler, Christian F Vahl
As endovascular treatment of abdominal aortic aneurysms has become established, there has been growing focus on treatment of the aneurysmal iliac artery. Isolated, large iliac aneurysms >30 mm pose a risk of rupture, but, in addition, 20% to 30% of abdominal aortic aneurysms are associated with iliac aneurysmal dilatation, which can compromise long-term outcomes. Endovascular solutions are evolving and until recently have utilized standard stent graft technology. The endovascular aortic sealing system was introduced as a new, effective method for the treatment of infrarenal aortic aneurysms...
September 2016: Seminars in Vascular Surgery
https://www.readbyqxmd.com/read/27989315/extended-use-of-endovascular-aneurysm-sealing-for-ruptured-abdominal-aortic-aneurysms
#20
REVIEW
Dittmar Böckler, Andrew Holden, Dainis Krievins, Jean-Paul P M de Vries, Andreas S Peters, Philipp Geisbüsch, Michel Reijnen
Endovascular repair of abdominal aortic aneurysms (EVAR) is now an established treatment modality for suitable patients presenting with aneurysm rupture. EVAR for ruptured aneurysms reduces transfusion, mechanical ventilation, intensive care. and hospital stay when compared with open surgery. In the emergency setting, however, EVAR is limited by low applicability due to adverse clinical or anatomical characteristics and increased need for reintervention. In addition, ongoing bleeding from aortic side branches post-EVAR can cause hemodynamic instability, larger hematomas, and abdominal compartment syndrome...
September 2016: Seminars in Vascular Surgery
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