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Aortic occlusion

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https://www.readbyqxmd.com/read/28935009/acute-occlusion-of-the-abdominal-aorta-with-sudden-paraplegia-in-a-captive-mustached-tamarin-saguinus-mystax
#1
Carmen R Michaud, Richard Herbert, William R Elkins, Alfonso S Gozalo
A wild-caught, research-naïve, adult male mustached tamarin (Saguinus mystax) experienced sudden onset of bilateral hindlimb paresis. Physical examination established the presence of paralysis and the lack of femoral pulses and deep pain in both legs. There were no signs of external trauma and, due to a poor prognosis, euthanasia was elected. Necropsy findings included pleural effusion, partial pulmonary atelectasis and congestion, dilatatory cardiomyopathy, a renal hemorrhagic infarct, and a thromboembolus located at the trifurcation of the distal abdominal aorta...
October 1, 2017: Comparative Medicine
https://www.readbyqxmd.com/read/28934888/influence-of-iliac-stenotic-lesions-on-blood-flow-patterns-near-a-covered-endovascular-reconstruction-of-the-aortic-bifurcation-cerab-stent-configuration
#2
Erik Groot Jebbink, Stefan Engelhard, Guillaume Lajoinie, Jean-Paul P M de Vries, Michel Versluis, Michel M P J Reijnen
PURPOSE: To investigate the effect of distal stenotic lesions on flow patterns near a covered endovascular reconstruction of the aortic bifurcation (CERAB) configuration used in the treatment of aortoiliac occlusive disease. METHOD: Laser particle image velocimetry measurements were performed using in vitro models of the aortic bifurcation with and without a CERAB configuration in place. A hemodynamically nonsignificant stenosis (ΔP: 9 mm Hg), a hemodynamically significant (ΔP: 26 mm Hg) stenosis, and a total occlusion were simulated in the left iliac arteries...
September 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28930916/peripheral-muscle-near-infrared-spectroscopy-nirs-variables-are-altered-early-in-septic-shock
#3
Diego Orbegozo, Fuhong Su, Keliang Xie, Lokmane Rahmania, Fabio Silvio Taccone, Daniel De Backer, Jean-Louis Vincent, Jacques Creteur
BACKGROUND: Non-invasive evaluation of muscle perfusion using near infrared spectroscopy (NIRS) coupled with a vascular occlusion test (VOT) may provide an early and simple marker of altered perfusion and microcirculatory function in sepsis. OBJECTIVE: To compare the time-course of NIRS-derived variables with systemic measures of perfusion in an experimental model of peritonitis. METHODS: Peritonitis was induced in eight anesthetized, mechanically ventilated, adult sheep (24-34 Kg), by injecting autologous feces into the peritoneal cavity...
September 19, 2017: Shock
https://www.readbyqxmd.com/read/28927932/chitosan-doxycycline-hydrogel-an-mmp-inhibitor-sclerosing-embolizing-agent-as-a-new-approach-to-endoleak-prevention-and-treatment-after-endovascular-aneurysm-repair
#4
Fatemeh Zehtabi, Pompilia Ispas-Szabo, Djahida Djerir, Lojan Sivakumaran, Borhane Annabi, Gilles Soulez, Mircea Alexandru Mateescu, Sophie Lerouge
The success of endovascular repair of abdominal aortic aneurysms remains limited due to the development of endoleaks. Sac embolization has been proposed to manage endoleaks, but current embolizing materials are associated with frequent recurrence. An injectable agent that combines vascular occlusion and sclerosing properties has demonstrated promise for the treatment of endoleaks. Moreover, the inhibition of aneurysmal wall degradation via matrix metalloproteinases (MMPs) may further prevent aneurysm progression...
September 16, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28924208/chebulinic-acid-inhibits-smooth-muscle-cell-migration-by-suppressing-pdgf-r%C3%AE-phosphorylation-and-inhibiting-matrix-metalloproteinase-2-expression
#5
In-Sung Song, Yu Jeong Jeong, Jung-Hyun Park, Sungbo Shim, Sung-Wuk Jang
Excessive migration of vascular smooth muscle cells (VSMCs) after vascular injury contributes to the development of occlusive vascular disease. Inhibition of VSMC migration is a validated therapeutic modality for occlusive vascular diseases, such as atherosclerosis and restenosis. We investigated the inhibitory effect of chebulinic acid (CBA) on cell migration and matrix metalloproteinase (MMP)-2 activation in platelet-derived growth factor (PDGF)-BB-induced mouse and human VSMCs. CBA significantly inhibited PDGF-BB-induced migration in mouse and human VSMCs, without inducing cell death...
September 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28914135/hemodynamic-and-anatomic-predictors-of-renovisceral-stent-graft-occlusion-following-chimney-endovascular-repair-of-juxtarenal-aortic-aneurysms
#6
Rosamaria Tricarico, Yong He, Liza Laquian, Salvatore T Scali, Roger Tran-Son-Tay, Adam W Beck, Scott A Berceli
PURPOSE: To identify anatomic and hemodynamic changes associated with impending visceral chimney stent-graft occlusion after endovascular aneurysm repair (EVAR) with the chimney technique (chEVAR). METHODS: A retrospective evaluation was performed of computed tomography scans from 41 patients who underwent juxtarenal chEVAR from 2008 to 2012 to identify stent-grafts demonstrating conformational changes following initial placement. Six subjects (mean age 74 years; 3 men) were selected for detailed reconstruction and computational hemodynamic analysis; 4 had at least 1 occluded chimney stent-graft...
September 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28913787/mortality-rates-and-risk-factors-for-emergent-open-repair-of-abdominal-aortic-aneurysms-in-the-endovascular-era
#7
Felice Pecoraro, Steffen Gloekler, Caecilia E Mader, Malgorzata Roos, Lyubov Chaykovska, Frank J Veith, Neal S Cayne, Nicola Mangialardi, Thomas Neff, Mario Lachat
The background of this paper is to report the mortality at 30 and 90 days and at mean follow-up after open abdominal aortic aneurysms (AAA) emergent repair and to identify predictive risk factors for 30- and 90-day mortality. Between 1997 and 2002, 104 patients underwent emergent AAA open surgery. Symptomatic and ruptured AAAs were observed, respectively, in 21 and 79% of cases. Mean patient age was 70 (SD 9.2) years. Mean aneurysm maximal diameter was 7.4 (SD 1.6) cm. Primary endpoints were 30- and 90-day mortality...
September 14, 2017: Updates in Surgery
https://www.readbyqxmd.com/read/28903623/endovascular-stenting-of-mid-aortic-syndrome-due-to-takayasu-arteritis
#8
Ali Dogan, Kenan Sever, Emrah Ozdemir, Denyan Mansuroglu, Nuri Kurtoglu
Introduction-patients: Takayasu arteritis may involve various parts of the aorta and its major branches. It leads to occlusive or aneurysmal disease of the vessel. It can be treated either with surgery or percutaneous intervention. We report a successful endovascular treatment of stenosis of the descending thoracic and abdominal aorta in a 19-year-old female. Methods-results-conclusions: Self-expandable nitinol stent was deployed and adequate opening of the aorta was obtained in this patient. Long-term durability of endovascular approach is a matter of debate...
September 13, 2017: Acta Chirurgica Belgica
https://www.readbyqxmd.com/read/28901634/optimal-target-vessel-selection-for-composite-and-sequential-radial-artery-grafting-with-an-in-situ-internal-thoracic-artery
#9
Yusuke Shimahara, Tomoyuki Fujita, Junjiro Kobayashi, Yasuhide Asaumi, Suzu Kanzaki, Kunihiro Nishimura, Michikazu Nakai, Hiroyuki Nakajima
OBJECTIVES: We retrospectively evaluated graft patency in patients who underwent no-touch aortic arterial off-pump coronary artery bypass grafting to determine the optimal selection of target vessels for improved graft patency of composite and sequential radial artery I-grafts. METHODS: The radial artery was anastomosed to the end of an in situ internal thoracic artery and was sequentially anastomosed to non-left anterior descending arteries. This composite graft was defined as an "I-graft...
September 13, 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/28893709/novel-application-of-branched-endograft-for-preservation-of-pelvic-circulation
#10
Roy Miler, Jeanwan Kang, Patrick Sowa, Matthew Eagleton, F Ezequiel Parodi
INTRODUCTION/OBJECTIVES: Endovascular repair of a proximal anastomotic pseudoaneurysm of an end-to-side aortobifemoral bypass (ABF) can lead to pelvic ischemia. We present a novel application of branched aortic endograft to repair such pseudoaneurysm while preserving flow into the ABF and native aortoiliac system. METHODS: A 71 year old male with history of aortoiliac occlusive disease resulting in lifestyle limiting claudication was treated with an aortobifemoral bypass in 1999...
September 8, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28891375/results-of-afx-unibody-stent-graft-implantation-in-patients-with-tasc-d-aortoiliac-lesions-and-coexistent-abdominal-aortic-aneurysms
#11
Pasqualino Sirignano, Wassim Mansour, Laura Capoccia, Chiara Pranteda, Nunzio Montelione, Francesco Speziale
PURPOSE: To describe results of AFX unibody stent-graft treatment for TransAtlantic Inter-Society Consensus (TASC) D aortoiliac occlusive disease (AIOD) with coexistent abdominal aortic aneurysm (AAA). METHODS: A retrospective analysis was conducted of 21 consecutive patients (mean age 73.6±6.4 years; 17 men) with TASC D AIOD plus AAA (diameter >3.5 cm) treated electively using the AFX stent-graft. Common iliac artery (CIA) and external iliac artery (EIA) stenosis or occlusion was reported...
September 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28890059/covered-stent-grafts-for-acquired-arterial-venous-fistulas-a-case-series
#12
Timur P Sarac, Lina Vargas, Vikram Kashyap, Jonathan Cardella, Cassius Ochoa Chaar
INTRODUCTION: Stent grafts have become the preferred method for treating abdominal aortic aneurysms (AAAs), but also have utility in treating other vasculopathies. In 2005, peripheral stent grafts were approved for treating superficial femoral artery (SFA) occlusive disease. This report describes our experience using covered stent grafts to treat acquired arterial venous fistulae (aAVF). METHODS: We reviewed the records of patients treated for aAVF with covered stent grafts...
September 7, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28888759/impact-of-iliac-artery-anatomy-on-the-outcome-of-fenestrated-and-branched-endovascular-aortic-repair
#13
Enrico Gallitto, Mauro Gargiulo, Gianluca Faggioli, Rodolfo Pini, Chiara Mascoli, Antonio Freyrie, Stefano Ancetti, Andrea Stella
OBJECTIVE: Fenestrated and branched endovascular aneurysm repair (FB-EVAR) is a valid option to treat juxtarenal and pararenal abdominal aortic aneurysms and thoracoabdominal aortic aneurysms. Because successful deployment depends on complex maneuvers, hostile iliac artery anatomy (HIA) can prejudice the FB-EVAR outcome. The aim of the study was to evaluate the impact of HIA on FB-EVAR outcome. METHODS: Between 2010 and 2015, all patients undergoing FB-EVAR were prospectively categorized according to iliac anatomy (friendly iliac artery anatomy [FIA] or HIA)...
September 6, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28887256/remote-ischemic-preconditioning-decreases-the-magnitude-of-hepatic-ischemia-reperfusion-injury-on-a-swine-model-of-supraceliac-aortic-cross-clamping
#14
G Martikos, A Kapelouzou, M Peroulis, A Paspala, D Athanasiadis, A Maheras, T D Liakakos, K Moulakakis, S Vasdekis, A M Lazaris
BACKGROUND: Temporary hepatic ischemia is inevitable during open aortic surgery when supraceliac clamping is necessary, as in thoracoabdominal or pararenal aneurysms. Remote ischemic preconditioning (RIPC) has been described as a potential protective means against ischemia - reperfusion injury (IRI) in various tissues including the liver. The aim of this experimental study was to detect the effect of RIPC on liver IRI in a model of supraceliac aortic cross-clamping. METHODS: An animal study was performed...
September 5, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28885101/association-between-the-maximal-distance-of-atrial-septal-protrusion-and-cryptogenic-stroke
#15
Keisuke Tokunaga, Masahiro Yasaka, Takahiro Kuwashiro, Seiji Gotoh, Asako Nakamura, Go Takaguchi, Tetsuro Ago, Masahiro Kamouchi, Takanari Kitazono, Yasushi Okada
Background and purpose Previous studies have suggested that atrial septal aneurysm is a potential risk factor for cerebral embolism. However, the association between the level of atrial septal protrusion and cerebral embolism is still unclear. The purpose of the present study was to assess the association between the maximal distance of atrial septal protrusion and cryptogenic stroke. Methods A total of 588 consecutive acute ischemic stroke patients (70 ± 11 (mean ± SD) years, 401 men) who underwent transesophageal echocardiography were enrolled...
December 20, 2016: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/28884122/advanced-oxidation-protein-products-and-carbonylated-proteins-as-biomarkers-of-oxidative-stress-in-selected-atherosclerosis-mediated-diseases
#16
Bogna Gryszczyńska, Dorota Formanowicz, Magdalena Budzyń, Maria Wanic-Kossowska, Elżbieta Pawliczak, Piotr Formanowicz, Wacław Majewski, Krzysztof Wojciech Strzyżewski, Magdalena P Kasprzak, Maria Iskra
OBJECTIVES: The main question of this study was to evaluate the intensity of oxidative protein modification shown as advanced oxidation protein products (AOPP) and carbonylated proteins, expressed as protein carbonyl content (C=O) in abdominal aortic aneurysms (AAA), aortoiliac occlusive disease (AIOD), and chronic kidney disease (CKD). DESIGN AND METHODS: The study was carried out in a group of 35 AAA patients and 13 AIOD patients. However, CKD patients were divided into two groups: predialysis (PRE) included 50 patients or hemodialysis (HD) consisted of 34 patients...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28883255/critical-leg-ischemia-following-abdominal-aortic-aneurysm-occlusion
#17
Shun-Ichi Kawarai, Keisuke Kanda, Masaharu Hatakeyama, Koichi Nagaya
No abstract text is available yet for this article.
September 6, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28882392/fundus-autofluorescence-in-retinal-artery-occlusion-a-more-precise-diagnosis
#18
J-L Bacquet, M Sarov-Rivière, C Denier, G Querques, B Riou, L Bonin, E Barreau, M Labetoulle, A Rousseau
IMPORTANCE: Retinal artery occlusion (RAO) is a medical emergency associated with a high risk of cerebral vascular accident and other cardiovascular events. Among patients with non-arteritic RAO, a retinal embolus is observed in approximately 40% of cases. Fundus examination and retinography are not reliable to predict the nature of the emboli. OBSERVATIONS: We report three consecutive cases of central and branch RAO that were investigated with fundus autofluorescence, fluorescein angiography and color retinal photographs...
September 4, 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28882080/use-of-the-nellix-endovascular-aneurysm-sealing-system-in-combination-with-parallel-grafts-for-the-treatment-of-a-symptomatic-type-v-thoracoabdominal-aortic-aneurysm
#19
Chris Klonaris, Athanasios Katsargyris, Dimitris Athanasiadis, Theodor Liakakos
PURPOSE: To report endovascular treatment of a symptomatic type V thoracoabdominal aortic aneurysm (TAAA) using the combined techniques of endovascular aneurysm sealing and parallel stent-grafts. CASE REPORT: A 70-year-old man was referred with a symptomatic type V TAAA. The Nellix EndoVascular Aneurysm Sealing (EVAS) System was used in combination with 2 chimney grafts for the celiac artery (CA) and the superior mesenteric artery (SMA); one periscope graft perfused the right renal artery...
September 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28876596/endovascular-aortic-aneurysm-repair-at-johannesburg-academic-hospitals
#20
K Thomas, R du Toit, A T O Abdool-Carrim
BACKGROUND: Abdominal aortic aneurysm (AAA) is a common disease seen in vascular units. AAA is defined as transverse diameter greater than 3 cm and affects men more than women. Endovascular aortic aneurysm repair (EVAR) is increasingly being used to treat AAA. Renal dysfunction, graft-related endoleaks, graft limb occlusion, device migration and delayed aneurysm rupture are possible complications that have been encountered after EVAR. METHOD: Changes in renal functions after one month, six months and twelve months...
September 2017: South African Journal of Surgery. Suid-Afrikaanse Tydskrif Vir Chirurgie
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