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https://www.readbyqxmd.com/read/29785859/apposition-and-positioning-of-the-nellix-endovascular-aneurysm-sealing-system-in-the-infrarenal-aortic-neck
#1
Kim van Noort, Simon P Overeem, Ruben van Veen, Jan M M Heyligers, Michel M P J Reijnen, Richte C L Schuurmann, Cornelis H Slump, Rogier Kropman, Jean-Paul P M de Vries
PURPOSE: To investigate the initial proximal position and seal of the Nellix EndoVascular Aneurysm Sealing (EVAS) system in the aortic neck using a novel methodology. METHODS: Forty-six consecutive patients who underwent elective EVAS for an abdominal aortic aneurysm were retrospectively selected and dichotomized into an early (n = 23) and a late (n = 23) group. The aortic neck morphology and aortic neck surface (ANS) were determined on preoperative computed tomography (CT) scans; the endograft position and nonapposition surface (NAS) were determined on the 1-month CT scans...
May 1, 2018: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/29784901/symptomatic-total-aortic-occlusion
#2
Bogdan Dutu, Dumitru Zdrenghea, Dana Pop, Gabriel Cismaru, Alexandru Martis, Adrian C Iancu
BACKGROUND Aortic occlusion, whether acute or subacute, is a rare but very serious entity with disastrous consequences if not treated in a timely fashion. Rapid diagnosis is crucial in this setting. In surgically treated patients there is a high degree of mortality and morbidity; therefore, percutaneous revascularization, whenever possible and independent of the available techniques, is much more desirable. CASE REPORT A 62-year-old woman with a history of diabetes mellitus, dyslipidemia, hypertension, and peripheral vascular disease, with previous femoral-femoral bypass for right common iliac artery occlusion, and with recent conventional angiography showing near occlusion of the ostial left common iliac artery (the donor vessel for the previous bypass), was referred to our hospital for conventional angioplasty...
May 22, 2018: American Journal of Case Reports
https://www.readbyqxmd.com/read/29779758/assessing-venous-thrombus-in-renal-cell-carcinoma-preliminary-results-for-unenhanced-3d-ssfp-mri
#3
L C Adams, B Ralla, G Engel, G Diederichs, B Hamm, J Busch, F Fuller, M R Makowski
AIM: To test the potential of unenhanced cardiac- and respiratory-motion-corrected three-dimensional steady-state free precession (3D-SSFP) magnetic resonance imaging (MRI) for the assessment of inferior vena cava (IVC) thrombus in patients with clear-cell renal cell carcinoma (cRCC), compared to standard contrast-enhanced (CE)-MRI and CE-computed tomography (CT). MATERIALS AND METHODS: Eighteen patients with cRCC and IVC thrombus, who received CE-MRI and 3D-SSFP at 1...
May 17, 2018: Clinical Radiology
https://www.readbyqxmd.com/read/29777839/-mesenteric-steal-physiology-as-a-cause-of-claudication-and-chronic-mesenteric-ischemia
#4
Aleem K Mirza, J Michael Bacharach
Aortoiliac occlusive disease (AOID) results in varying degrees of pelvic and lower extremity arterial insufficiency. Treatment approach has evolved and endovascular therapies are being successfully reported for high-grade lesion. However, Trans Atlantic Inter-Society Consensus (TASC) D often necessitates open revascularization. Disease limited to the infrarenal segment does not typically affect intestinal perfusion in the absence of visceral aortic or mesenteric vessel involvement. Chronic mesenteric ischemia most commonly occurs due to atherosclerotic disease of two or three of the mesenteric vessels...
May 16, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29772324/morphology-related-limitations-of-evar-applicability-in-the-treatment-of-aaa-in-west-central-poland
#5
Łukasz Dzieciuchowicz, Jolanta Tomczak, Ewa Strauss, Grzegorz Oszkinis
BACKGROUND: To analyze the current applicability of endovascular aneurysm repair (EVAR) in patients with an infrarenal abdominal aortic aneurysm (AAAs) with indication for elective treatment in West-Central Poland. METHODS: Computed tomography angiograms of 100 consecutive patients with infrarenal AAA deemed to require treatment were analyzed with an OsiriX DICOM viewer in 3D-MPR mode. Proximal neck diameter, length, angulation, shape, the presence of thrombus and calcification, distal neck diameter, and morphology of the iliac arteries were determined...
May 14, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29766011/use-of-iliac-branch-device-for-endovascular-treatment-for-abdominal-aorta-aneurysm-with-small-diameter-neck
#6
Umberto G Rossi, Davide Santuari, Raffaello Dallatana, Maurizio Cariati
We present the case of a 78-year-old woman with a 4.5-cm symptomatic abdominal aortic aneurysm with a small diameter (13-mm diameter) infrarenal aortic neck who underwent endovascular treatment using an iliac branch device as a bifurcated aortic stent-graft.
December 2017: Aorta (Stamford, Conn.)
https://www.readbyqxmd.com/read/29766009/persistent-buttock-claudication-after-endovascular-abdominal-aortic-aneurysm-repair
#7
Alessandro Robaldo, Stefano Pagliari, Filippo Piaggio, Patrizio Colotto
We describe the successful surgical treatment of a 71-year-old man affected by right buttock claudication after a right internal iliac artery (IIA) coil embolization as an adjunct to endovascular iliac artery aneurysm repair. Computed tomography angiography revealed extensive aortoiliac calcifications and thrombus in the vessel walls. Despite patency of the contralateral IIA and preservation of right distal collateral flow through ipsilateral hypogastric branches, the symptom was persistent and disabling. The high-risk patient underwent an "open" repair of the infrarenal abdominal aneurysm with removal of the entire stent-graft and concomitant revascularization of the right IIA...
December 2017: Aorta (Stamford, Conn.)
https://www.readbyqxmd.com/read/29764709/influence-of-proximal-aortic-neck-diameter-on-durability-of-aneurysm-sealing-and-overall-survival-in-patients-undergoing-endovascular-aneurysm-repair-real-world-data-from-the-gore-global-registry-for-endovascular-aortic-treatment-great
#8
Dominic P J Howard, Conor D Marron, Ediri Sideso, Phillip J Puckridge, Eric L G Verhoeven, James I Spark
OBJECTIVES: Aortic neck diameter is an independent anatomical feature that is poorly understood, yet potentially linked to proximal seal failure and adverse outcome following standard EVAR. The aim of this study was to assess whether large proximal aortic neck (LAN) diameter is associated with adverse outcome using prospectively collected individual patient data from The Global Registry for Endovascular Aortic Treatment (GREAT). METHODS: A total of 3166 consecutive patients, from 78 global centres, receiving Gore Excluder stent grafts for infrarenal abdominal aortic aneurysm repair between 2011 and 2017 were included...
May 12, 2018: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/29754316/compromised-mechanical-homeostasis-in-arterial-aging-and-associated-cardiovascular-consequences
#9
J Ferruzzi, D Madziva, A W Caulk, G Tellides, J D Humphrey
Aging leads to central artery stiffening and associated hemodynamic sequelae. Because healthy arteries exhibit differential geometry, composition, and mechanical behaviors along the central vasculature, we sought to determine whether wall structure and mechanical function differ across five vascular regions-the ascending and descending thoracic aorta, suprarenal and infrarenal abdominal aorta, and common carotid artery-in 20 versus 100-week-old male wild-type mice. Notwithstanding generally consistent changes across these regions, including a marked thickening of the arterial wall, diminished in vivo axial stretch, and loss of elastic energy storage capacity, the degree of changes tended to be slightly greater in abdominal than in thoracic or carotid vessels...
May 12, 2018: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/29749489/effects-of-osteoprotegerin-tnfrsf11b-in-two-models-of-abdominal-aortic-aneurysms
#10
Emina Vorkapic, Anne Kunath, Dick Wågsäter
Osteoprotegerin (OPG), additionally termed tumor necrosis factor receptor superfamily member 11B, is produced by vascular smooth muscle cells (VSMCs) and endothelial cells in the vasculature, and its release may be modulated by pro‑inflammatory cytokines, including interleukin‑1β and tumor necrosis factor‑α. The present study investigated the effects of treatment with low‑dose human recombinant OPG on abdominal aortic aneurysm (AAA) development in mice. Mice were treated with 1 µg human recombinant OPG four times (or vehicle) for 2 weeks prior to inducing AAA...
April 27, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29709360/the-fate-of-the-abdominal-aorta-after-endovascular-treatment-in-chronic-debakey-iiib-aneurysm
#11
Tae-Hoon Kim, Suk-Won Song, Kwang-Hun Lee, Min-Young Baek, Kyung-Jong Yoo, Hye Sun Lee
OBJECTIVES: We sought to identify the risk factors for abdominal aortic remodeling after thoracic endovascular aortic repair in patients with chronic DeBakey IIIb aneurysm. METHODS: From 2012 to 2016, 70 patients underwent thoracic endovascular aortic repair for chronic DeBakey IIIb aneurysm. The abdominal aortic diameter was measured at 3 different levels (celiac trunk, renal artery, and infrarenal aorta). Abdominal aorta status was classified as expansion or stable...
April 4, 2018: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29706473/procedural-and-perioperative-results-in-patients-treated-with-fenestrated-endovascular-aneurysm-repair-planned-by-automated-software-in-a-physician-sponsored-investigational-device-exemption-trial-of-physician-modified-endografts
#12
Benjamin W Starnes, Billi Tatum, Niten Singh
OBJECTIVE: Fenestrated endovascular aneurysm repair (FEVAR) has been used successfully to treat patients with juxtarenal abdominal aortic aneurysms (JAAAs). Barriers to wide adoption of FEVAR include complexity in planning of fenestration locations on endografts. The purpose of this study was to validate the use of automated planning software to design fenestrated endografts and to treat patients with complex abdominal aortic aneurysms. METHODS: Patients with JAAA who were not candidates for open repair were enrolled into the automated planning arm of an ongoing investigational device exemption clinical trial and treated with FEVAR...
April 26, 2018: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29706128/evolution-of-the-proximal-sealing-rings-of-the-anaconda-stent-graft-after-endovascular-aneurysm-repair
#13
Maaike A Koenrades, Almar Klein, Anne M Leferink, Cornelis H Slump, Robert H Geelkerken
PURPOSE: To provide insight into the evolution of the saddle-shaped proximal sealing rings of the Anaconda stent-graft after endovascular aneurysm repair (EVAR). METHODS: Eighteen abdominal aortic aneurysm patients were consecutively enrolled in a single-center, prospective, observational cohort study (LSPEAS; Trialregister.nl identifier NTR4276). The patients were treated electively using an Anaconda stent-graft with a mean 31% oversizing (range 17-47). According to protocol, participants were to be followed for 2 years, during which 5 noncontrast electrocardiogram-gated computed tomography scans would be conducted...
April 1, 2018: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/29705699/transplantation-of-periaortic-adipose-tissue-inhibits-atherosclerosis-in-apoe-mice-by-evoking-tgf-%C3%AE-1-mediated-anti-inflammatory-response-in-transplanted-graft
#14
Kensuke Terada, Hiroyuki Yamada, Masakazu Kikai, Noriyuki Wakana, Keita Yamamoto, Naotoshi Wada, Shinichiro Motoyama, Makoto Saburi, Takeshi Sugimoto, Daisuke Irie, Taku Kato, Hiroyuki Kawahito, Daisuke Kami, Takehiro Ogata, Satoaki Matoba
Perivascular adipose tissue (PAT) is associated with vascular homeostasis; however, its causal effect on atherosclerosis currently remains undefined. Here, we investigated the effect of experimental PAT transplantation on atherosclerosis. The thoracic periaortic adipose tissue (tPAT) was dissected from 16-week-old wild-type mice and transplanted over the infrarenal aorta of 20-week-old apoE deficient (apoE-/- ) mice fed high-cholesterol diet for 3 months. Oil-red O staining after 4 weeks showed a significant 20% decrease in the atherosclerotic lesion of suprarenal aorta compared with that of sham control mice, while that of infrarenal aorta showed no difference between the two groups...
April 26, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29703523/four-surgical-modifications-to-the-classic-elastase-perfusion-aneurysm-model-enable-haemodynamic-alterations-and-extended-elastase-perfusion
#15
Albert Busch, Ekaterina Chernogubova, Hong Jin, Felix Meurer, Hans-Henning Eckstein, Mia Kim, Lars Maegdefessel
OBJECTIVE/BACKGROUND: Abdominal aortic aneurysm (AAA) is an individual and socioeconomic burden in today's ageing society. Treatment relies on surgical exclusion of the dilated aorta by open or endovascular repair. For research purposes, animal models are necessary and the elastase induced aneurysm model closely mimics end stage human aneurysm disease. To improve the translational value of this model, four modifications to the classic elastase perfusion procedure (PPE) in relation to human aneurysm morphology were conducted...
April 24, 2018: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/29701406/infrarenal-abdominal-penetrating-aortic-ulcer-an-atypical-location-of-a-rare-disease
#16
Nelson Camacho, Gonçalo Rodrigues, Rodolfo Abreu, Rita Ferreira, Joana Catarino, Ricardo Correia, Rita Bento, Maria Emília Ferreira
INTRODUCTION: Penetrating aortic ulcer (PAU) is classically included in acute aortic syndromes, together with aortic dissection and intramural hematoma. These three disorders are considered different stages of the same disease. PAU is the result of medial degeneration with disruption of the intima, mainly due to atherosclerotic risk factors. Most of them are located on descending thoracic aorta and only a few small series and case reports demonstrate location on infrarenal abdominal aorta...
July 2017: Revista Portuguesa de Cirurgia Cardio-torácica e Vascular
https://www.readbyqxmd.com/read/29701345/emergency-nightmares-rupture-of-type-iii-thoracoabdominal-aneurysm
#17
Marina Dias-Neto, José Fernando Ramos, João Rocha Neves, Pedro Almeida, Augusto Rocha E Silva, José Fernando Teixeira
Introduction The rupture of thoracoabdominal aneurysms (rTAA) represents one of the major challenges to the vascular surgeon. Recent developments in the endovascular armamentarium and the high mortality from open surgery make endovascular treatment an attractive option. Devices to be used in an emergency environment should be "off-the-shelf" and include, among others, EVAR snorkel/chimney and branched endoprosthesis (T-branch, Cook®). METHODS: We describe the case of a 70-year-old patient who was admitted to the emergency room due continuous low back pain with 3 days of evolution...
July 2017: Revista Portuguesa de Cirurgia Cardio-torácica e Vascular
https://www.readbyqxmd.com/read/29691099/influence-of-aortic-neck-characteristics-on-successful-aortic-wall-penetration-of-endoanchors-in-therapeutic-use-during-endovascular-aneurysm-repair
#18
Seline R Goudeketting, Kim van Noort, Kenneth Ouriel, William D Jordan, Jean M Panneton, Cornelis H Slump, Jean-Paul P M de Vries
OBJECTIVE: This study sought to quantify EndoAnchor (Medtronic Vascular, Santa Rosa, Calif) penetration into the aortic wall in patients undergoing endovascular abdominal aortic aneurysm repair and to assess predictors of successful penetration and its relationship to postprocedural type IA endoleak. METHODS: A subset of patients from the Aneurysm Treatment Using the Heli-FX Aortic Securement System Global Registry (ANCHOR) were included if they met the following criteria: the indication for EndoAnchor use was to treat a type IA endoleak, and postprocedure contrast-enhanced computed tomography (CT) scans of sufficient quality were available for core laboratory review...
April 21, 2018: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29688286/endovascular-repair-of-thrombosed-type-acute-type-a-aortic-dissection-with-critical-renal-artery-malperfusion
#19
Atsushi Omura, Hitoshi Matsuda, Jiro Matsuo, Junjiro Kobayashi
An 81-year-old woman was referred to our centre for emergency surgery with a suspected diagnosis of acute aortic dissection. Laboratory tests showed marked elevation of serum creatinine and blood urea nitrogen. Enhanced computed tomography (CT) demonstrated Type A aortic dissection with a thrombosed false lumen in the ascending aorta. The primary entry tear was located 2 cm distal to the left subclavian artery. Malperfusion of bilateral renal arteries was also evident due to compression by the false lumen...
April 24, 2018: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29685659/a-technique-of-chimney-nellix-for-the-management-of-type-1a-endoleak-after-evar
#20
Simon Z Joseph, C H Ricky Kwok, Joseph A Hockley, Marek W Garbowski, John Ferguson, Shaun Samuelson, Shirley J Jansen
This report presents 3 procedures with visceral "chimney stenting" in conjunction with an endovascular aneurysm sealing (EVAS) device, known as chEVAS, for treatment of type 1a endoleak. It includes the first published chEVAS in a patient with previous fenestrated endovascular aneurysm repair (FEVAR). Cases include an 80-year-old man 8 years after FEVAR for a juxtarenal abdominal aortic aneurysm (AAA); an 85-year-old woman 9 months after endovascular aneurysm repair (EVAR) for a ruptured infrarenal AAA; and an 84-year-old woman 3 months after EVAR for a symptomatic infrarenal AAA...
May 2018: Journal of Vascular and Interventional Radiology: JVIR
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