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https://www.readbyqxmd.com/read/27904445/endovascular-treatment-of-unruptured-aneurysms-of-cavernous-and-ophthalmic-segment-of-internal-carotid-artery-with-flow-diverter-device-pipeline
#1
Marko Jevsek, Charbel Mounayer, Tomaz Seruga
BACKGROUND: Intra-arterial treatment of aneurysms by redirecting blood flow is a newer method. The redirection is based on a significantly more densely braided wire stent. The stent wall keeps the blood in the lumen of the stent and slows down the turbulent flow in the aneurysms. Stagnation of blood in the aneurysm sac leads to the formation of thrombus and subsequent exclusion of the aneurysm from the circulation. The aim of the study was to evaluate flow diverter device Pipeline for broad neck and giant aneurysm treatment...
December 1, 2016: Radiology and Oncology
https://www.readbyqxmd.com/read/27903469/determinants-of-follow-up-failure-in-patients-undergoing-vascular-surgery-procedures
#2
Dejah R Judelson, Jessica P Simons, Julie M Flahive, Virendra I Patel, Christopher T Healey, Brian W Nolan, Daniel J Bertges, Andres Schanzer
OBJECTIVE: The Vascular Study Group of New England (VSGNE) requires documentation of follow-up for >80% of patients at least 9 months post-procedure. However, many participating groups fall short of this goal. We sought to identify factors independently associated with loss to long-term follow-up (LTF). METHODS: The VSGNE was queried from 2008-2012, for all carotid endarterectomy (CEA), endovascular aneurysm repair (EVAR), open abdominal aortic aneurysm repair (OPEN), infrainguinal bypass (INFRA), and suprainguinal bypass (SUPRA) procedures in patients who survived greater than 9 months post-procedure...
November 26, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27895519/portal-hypertension-an-uncommon-clinical-manifestation-of-takayasu-arteritis-in-a-9-year-old-child
#3
Cristina N Herrera, Javier E Tomala-Haz
Takayasu arteritis (TA) is the third most common childhood vasculitis and its clinical manifestations depend on the arteries involved. We report a case of a 9-year-old boy with multiple aneurysms in carotid and iliac arteries, subclavian and coronary arteries, and abdominal aorta. At the age of 7 years, he presented with recurrent fever and hepatosplenomegaly. An angio-computed tomography scan showed aneurysms in the left subclavian artery, abdominal aorta, and both proximal iliac arteries. He was diagnosed with TA and was treated with corticosteroids, aspirin, and enalapril...
2016: Open Access Rheumatology: Research and Reviews
https://www.readbyqxmd.com/read/27888087/coiling-of-a-ruptured-large-internal-carotid-aneurysm-via-extracranial-intracranial-saphenous-vein-bypass-graft-just-after-proximal-ligation-of-the-internal-carotid-artery
#4
Hayato Tajima, Yoshio Araki, Takashi Izumi, Masahiro Nishihori, Sho Okamoto, Toshihiko Wakabayashi
BACKGROUND: Direct and endovascular combined surgery has been performed to treat large to giant internal carotid artery (ICA) aneurysms. This report describes successful treatment of the large ICA aneurysm by coiling of the aneurysm via extracranial-intracranial (EC-IC) saphenous vein graft (SVG) just after bypass and ICA proximal ligation. CASE DESCRIPTION: A 66-year-old woman presented with left ICA supraclinoid aneurysm with progressive visual field defect and impaired visual acuity in the left eye...
November 22, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27885318/multiscale-opening-of-conjoined-fuzzy-objects-theory-and-applications
#5
Punam K Saha, Subhadip Basu, Eric A Hoffman
Theoretical properties of a multi-scale opening (MSO) algorithm for two conjoined fuzzy objects are established, and its extension to separating two conjoined fuzzy objects with different intensity properties is introduced. Also, its applications to artery/vein (A/V) separation in pulmonary CT imaging and carotid vessel segmentation in CT angiograms (CTAs) of patients with intracranial aneurysms are presented. The new algorithm accounts for distinct intensity properties of individual conjoined objects by combining fuzzy distance transform (FDT), a morphologic feature, with fuzzy connectivity, a topologic feature...
October 2016: IEEE Transactions on Fuzzy Systems: a Publication of the IEEE Neural Networks Council
https://www.readbyqxmd.com/read/27884881/testing-stenting-and-flow-diversion-using-a-surgical-elastase-induced-complex-fusiform-aneurysm-model
#6
R Fahed, T E Darsaut, I Salazkin, J-C Gentric, M Mazighi, J Raymond
BACKGROUND AND PURPOSE: Rabbit elastase-induced saccular aneurysms have been commonly used for preclinical testing of endovascular devices, including flow diverters. However, all tested devices have been shown to be capable of aneurysm occlusion with this model. We aimed to create a more challenging model to test and discriminate among neurovascular devices of varying efficacies. MATERIALS AND METHODS: With a surgical approach that included elastase infusion and balloon dilation, we attempted the creation of complex fusiform aneurysms in 16 rabbits, with standard saccular carotid aneurysms created in 15 other animals...
November 24, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/27884774/esponsive-multifunctional-drug-delivery-nanoparticles-for-elastic-matrix-regenerative-repair
#7
Balakrishnan Sivaraman, Ganesh Swaminathan, Lee Moore, Jonathan Fox, Dhruv Seshadri, Shataakshi Dahal, Ivan Stoilov, Maciej Zborowski, Robert Mecham, Anand Ramamurthi
: Arresting or regressing growth of abdominal aortic aneurysms (AAAs), localized expansions of the abdominal aorta are contingent on inhibiting chronically overexpressed matrix metalloproteases (MMPs)-2 and -9 that disrupt elastic matrix within the aortic wall, concurrent with providing a stimulus to augmenting inherently poor auto-regeneration of these matrix structures. In a recent study we demonstrated that localized, controlled and sustained delivery of doxycycline (DOX; a tetracycline-based antibiotic) from poly(lactic-co-glycolic acid) nanoparticles (PLGA NPs), enhances elastic matrix deposition and MMP-inhibition at a fraction of the therapeutically effective oral dose...
November 21, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27876661/fusion-three-dimensional-angiography-of-both-internal-carotid-arteries-in-the-evaluation-of-anterior-communicating-artery-aneurysms
#8
Kuhyun Yang, Hae-Won Koo, Wonhyoung Park, Jin Su Kim, Choong Gon Choi, Jung Cheol Park, Jae Sung Ahn, Do Hoon Kwon, Byung Duk Kwun, Deok Hee Lee
BACKGROUND: To determine whether 'fusion 3D angiography' of both internal carotid arteries (ICAs) can better disclose vascular details in patients diagnosed with anterior communicating artery (ACoA) aneurysms by computed tomography angiography (CTA) or magnetic resonance angiography (MRA). METHODS: Thirty-eight patients diagnosed with ACoA aneurysms by CTA or MRA were evaluated by the new post-processing feature, fusion 3D angiography, with results individually interpreted by four experts...
November 19, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27873227/the-relationship-between-aortic-root-size-and-hypertension-an-unsolved-conundrum
#9
Giuseppe Mulè, Emilio Nardi, Massimiliano Morreale, Antonella Castiglia, Giulio Geraci, Dario Altieri, Valentina Cacciatore, Margherita Schillaci, Francesco Vaccaro, Santina Cottone
Thoracic aortic aneurysms rupture and dissection are among the most devastating vascular diseases, being characterized by elevated mortality, despite improvements in diagnostic imaging and surgical techniques.An increased aortic root diameter (ARD) represents the main risk factor for thoracic aortic dissection and rupture and for aortic valve regurgitation.Even though arterial hypertension is commonly regarded as a predisposing condition for the development of thoracic aorta aneurysms, the role of blood pressure (BP) as determinant of aortic root enlargement is still controversial...
November 22, 2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27869217/magnesium-alloy-covered-stent-for-treatment-of-a-lateral-aneurysm-model-in-rabbit-common-carotid-artery-an-in-vivo-study
#10
Wu Wang, Yong-Li Wang, Mo Chen, Liang Chen, Jian Zhang, Yong-Dong Li, Ming-Hua Li, Guang-Yin Yuan
Magnesium alloy covered stents have rarely been used in the common carotid artery (CCA). We evaluated the long-term efficacy of magnesium alloy covered stents in a lateral aneurysm model in rabbit CCA. Magnesium alloy covered stents (group A, n = 7) or Willis covered stents (group B, n = 5) were inserted in 12 New Zealand White rabbits and they were followed up for 12 months. The long-term feasibility for aneurysm occlusion was studied through angiograms; the changes in vessel area and lumen area were assessed with IVUS...
November 21, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27865695/fusiform-left-carotid-ophthalmic-artery-aneurysm-presenting-with-central-retinal-artery-occlusion
#11
Rima M Dafer, John H Pula, Shakeel Chowdhry
Central retinal artery occlusion (CRAO) is a devastating ocular emergency characterized by acute painless visual loss in the ipsilateral eye. We describe the case of acute non-arteritic CRAO associated fusiform internal carotid-ophthalmic artery aneurysm with intraluminal thrombus. Despite the rarity of this condition, we suggest that carotid-ophthalmic artery aneurysm should be included in the differential diagnosis of CRAO.
November 16, 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/27864523/carotid-artery-web-and-ischemic-stroke-a-case-control-study
#12
Jonathan M Coutinho, Sheldon Derkatch, Alphonse R J Potvin, George Tomlinson, Leanne K Casaubon, Frank L Silver, Daniel M Mandell
OBJECTIVE: To determine whether there is an association between carotid artery web and ischemic stroke. METHODS: This was a single-center, age- and sex-matched, case-control study. Cases were consecutive patients with anterior circulation ischemic stroke of undetermined etiology (Trial of Org 10172 in Acute Stroke Treatment [TOAST] classification). Controls were consecutive patients with cerebral aneurysms, arteriovenous malformations, or primary intracerebral hemorrhages...
November 18, 2016: Neurology
https://www.readbyqxmd.com/read/27861392/endovascular-stenting-for-extracranial-carotid-artery-aneurysms-experiences-and-mid-term-results
#13
Leng Ni, Zuo Pu, Rong Zeng, Rui Zhang, Yue-Hong Zheng, Wei Ye, Chang-Wei Liu
The aim of this study was to investigate the safety and effectiveness of endovascular stenting for extracranial carotid artery aneurysms (ECAAs) and evaluate the mid-term outcomes.Twelve consecutive symptomatic patients (mean age 43.8 ± 14.9 years; 8 men) with ECAAs who were treated with endovascular stenting between 1997 and 2015 were retrospectively analyzed. Clinical follow-up data including symptoms and neurological events were obtained from outpatient records. Imaging follow-up with duplex ultrasound and/or computed tomographic angiography (CTA) was performed to examine the aneurysm obliteration and patency of the stents at 3, 6, 12 months and yearly thereafter...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27858574/quantitative-anatomical-analysis-and-clinical-experience-with-mini-pterional-and-mini-orbitozygomatic-approaches-for-intracranial-aneurysm-surgery
#14
Kaan Yagmurlu, Sam Safavi-Abbasi, Evgenii Belykh, M Yashar S Kalani, Peter Nakaji, Albert L Rhoton, Robert F Spetzler, Mark C Preul
OBJECTIVE The aim of this investigation was to modify the mini-pterional and mini-orbitozygomatic (mini-OZ) approaches in order to reduce the amount of tissue traumatization caused and to compare the use of the 2 approaches in the removal of circle of Willis aneurysms based on the authors' clinical experience and quantitative analysis. METHODS Three formalin-fixed adult cadaveric heads injected with colored silicone were examined. Surgical freedom and angle of attack of the mini-pterional and mini-OZ approaches were measured at 9 anatomical points, and the measurements were compared...
November 18, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27857875/dual-endoscopic-endonasal-transsphenoidal-and-precaruncular-transorbital-approaches-for-clipping-of-the-cavernous-carotid-artery-a-cadaveric-simulation
#15
Jeremy Ciporen, Brandon Lucke-Wold, Aclan Dogan, Justin S Cetas, William E Cameron
Background Endoscopic skull base approaches are being used to address complicated neurovascular pathology. These approaches are safest when proximal vascular control of the cavernous carotid artery (CavCA) can be obtained. Methods We present a cadaver-based anatomic simulation study showing the feasibility of clip placement for the CavCA as it courses through the cavernous sinus. The arterial vessels were injected with red microfil (Flow Tech, Carver, Massachusetts) to enhance visibility. The endoscope was directed through a precaruncular transorbital approach and instrumentation was managed through an endonasal transsphenoidal approach...
December 2016: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/27856649/the-barrel-stent-new-treatment-option-for-stent-assisted-coiling-of-wide-necked-bifurcation-aneurysms-results-of-a-single-center-study
#16
Ruben Mühl-Benninghaus, Andreas Simgen, Wolfgang Reith, Umut Yilmaz
PURPOSE: The Barrel stent is a laser cut stent designed for stent-assisted coil embolization of wide-necked bifurcation or branch aneurysms with a single device, with the purpose of lowering the metal-to-artery ratio and its inherent risk of thromboembolic complications of multiple stents. We report our early experiences with this device in 17 patients in this retrospective single-center analysis. MATERIALS AND METHODS: 17 consecutive patients who underwent stent-assisted coil embolization of wide-necked bifurcation aneurysms with the Barrel stent were retrospectively identified...
November 17, 2016: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/27848082/quantitative-analysis-of-the-trajectory-of-simulated-basilar-apex-aneurysms-through-the-internal-carotid-artery-to-assess-the-need-for-an-orbitozygomatic-approach
#17
Yasushi Motoyama, Yasuo Hironaka, Fumihiko Nishimura, Pritam Gurung, Ryota Sasaki, Yasuhiro Takeshima, Ryosuke Matsuda, Kentaro Tamura, Ichiro Nakagawa, Young-Su Park, Hiroyuki Nakase
BACKGROUND: The aim of this study was to identify the correlation between the location of the internal carotid artery (ICA) and the need for an orbitozygomatic approach (OZA) when approaching a basilar apex (BX) aneurysm. MATERIALS AND METHODS: By imaging the virtual trajectory to access the basilar artery (BA) through the ICA, the correlations among the height of the BX, the height and lateral breadth of the bifurcation of the ICA, and the need for removal of the orbital rim or zygomatic arch were investigated using three-dimensional computed tomography angiography (3DCTA) data of approximately 80 random samples not limited to BX aneurysms...
November 15, 2016: Acta Neurochirurgica
https://www.readbyqxmd.com/read/27847780/recurrent-carotid-cavernous-fistula-originating-from-a-giant-cerebral-aneurysm-after-placement-of-a-covered-stent
#18
Jung Wook Baek, Sung Tae Kim, Young Seo Lee, Young-Gyun Jeong, Hae Woong Jeong, Jin Wook Baek, Jung Hwa Seo
We report the case of a recurrent carotid cavernous fistula (CCF) originating from a giant cerebral aneurysm (GCA) after placement of a covered stent. A 47-year-old woman presented with sudden onset of severe headache, and left-sided exophthalmos and ptosis. Cerebral angiography revealed a CCF caused by rupture of a GCA in the cavernous segment of the left internal carotid artery. Two covered stents were placed at the neck of the aneurysm. The neurological symptoms improved at first, but were aggravated in the 6 months following the treatment...
September 2016: Journal of Cerebrovascular and Endovascular Neurosurgery
https://www.readbyqxmd.com/read/27847779/pure-subdural-hemorrhage-caused-by-internal-carotid-artery-dorsal-wall-aneurysm-rupture
#19
Young Woon Lee, Taek Min Nam, Jong Soo Kim, Seung Chyul Hong, Je Young Yeon
A 37-year-old woman was admitted to our hospital with altered mentality. The patient was diagnosed an internal carotid artery (ICA) dorsal wall aneurysm leading to acute subdural hemorrhage (SDH) without occurring subarachnoid hemorrhage and/or internal parenchymal hemorrhage. An aneurysmal neck clipping and hematoma evacuation were performed at once. A pure SDH by ruptured aneurysm is unusual, but it is important to consider it if a SDH patient has no other medical history.
September 2016: Journal of Cerebrovascular and Endovascular Neurosurgery
https://www.readbyqxmd.com/read/27847767/the-benefits-of-navien%C3%A2-intracranial-support-catheter-for-endovascular-treatment
#20
Siwoo Lee, Tae-Sik Gong, Yong-Woo Lee, Hyo-Joon Kim, Chang-Young Kweon
OBJECTIVE: Endovascular treatment is one of the most important treatments along with open craniotomy for cerebrovascular surgery. The successful treatment of endovascular disease relies on appropriate instruments and the surgeon's skill. Endovascular treatment needs to provide safe and stable access to the catheter cavity. Additionally, it is important to maintain a round shape without changing to an oval shape. The catheter for endovascular treatment has to be flexible and accommodate at least 0...
September 2016: Journal of Cerebrovascular and Endovascular Neurosurgery
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