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https://www.readbyqxmd.com/read/28219914/nickel-associated-delayed-multiple-white-matter-lesions-after-stent-assisted-coil-embolization-of-intracranial-unruptured-aneurysm
#1
Hun Soo Park, Ichiro Nakagawa, Shohei Yokoyama, Daisuke Wajima, Takeshi Wada, Yasushi Motoyama, Kimihiko Kichikawa, Hiroyuki Nakase
Metal-induced encephalopathy after stent-assisted coil embolization is extremely rare. The present report describes two patients who presented with symptomatic intracranial parenchymal edematous lesions after stent-assisted coil embolization. A 64-year-old woman underwent stent-assisted coil embolization for a left internal carotid artery aneurysm; 21 days after the procedure she presented with right hand weakness and MRI revealed multifocal white matter lesions. Another woman aged 52 years underwent stent-assisted coil embolization for right vertebral artery aneurysm; 18 days after the procedure she presented with left-sided sensory disturbance and MRI demonstrated multiple white matter lesions...
February 20, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28219575/how-to-clamp-and-bypass-if-there-is-single-artery-supply-to-the-head-and-that-contains-severe-stenosis
#2
Murat Ugurlucan, Yilmaz Onal, Didem Melis Oztas, Omer Ali Sayin, Kubilay Aydin, Ufuk Alpagut
Takayasu arteritis manifests with arterial occlusions and aneurysms. Revascularization is sometimes challenging, especially when carotid arteries are affected. In this report, we present a carotid artery revascularization technique in a patient who was admitted with orthostatic and postprandial transient ischemic attacks, resulting in a diagnosis of bilaterally occluded subclavian and vertebral arteries, occluded left common carotid artery, and severely stenosed right common carotid artery. Clamping of the right carotid artery was a challenge; however, our technique provides a neurologically safe revascularization...
March 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28216392/nitrergic-cardiovascular-regulation-in-the-african-lungfish-protopterus-aethiopicus
#3
Renato Filogonio, William Joyce, Tobias Wang
As a ubiquitous signaling molecule, nitric oxide (NO) exerts various important effects on the cardiovascular system and is involved in the regulation of vascular tone and myocardial metabolism in vertebrates. Lungfishes are closely related to tetrapods and provide an interesting possibility to understand the transition from water to land. Lungfishes are endowed with both systemic and pulmonary circulations, and their incompletely divided ventricle allows for blood to bypass either circuit. Lungfishes inhabit ephemeral waterbodies that may enforce prolonged aestivation during drought, throughout which nitric oxide synthase (NOS) expression is upregulated...
February 16, 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/28216209/feasibility-and-safety-of-distal-and-proximal-combined-endovascular-approach-with-a-balloon-guiding-catheter-for-subclavian-artery-total-occlusion-a-case-report
#4
Taiki Yamamoto, Tomotaka Ohshima, Kojiro Ishikawa, Shunsaku Goto, Yosuke Tamari
BACKGROUND: Symptomatic subclavian artery total occlusion is widely treated with an endovascular procedure, which often results in distal vertebral artery embolism. Therefore, protection devices are important. Setting up a filter or balloon device in the vertebral artery can protect against this distal embolism. However, the use of embolic protection devices is not easy and makes the procedure more complicated. Here we report a case of symptomatic subclavian artery total occlusion that was successfully treated with a balloon-guiding catheter and the pull-through technique...
February 12, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28213934/transverse-process-anatomy-as-a-guide-to-vertebral-artery-exposure-during-anterior-cervical-spine-approach-a-cadaveric-study
#5
Ali Nourbakhsh, Jinping Yang, Howard McMahan, Kim Garges
INTRODUCTION: Safe exposure of the vertebral artery (VA) is needed during resection of tumors close to the artery and during repair of lacerations. We defined the anatomy of the anterior root of each transverse process (TP) from C3 to C6 for identification and exposure of the VA during the anterior approach. MATERIALS AND METHODS: We examined the anatomy of the TP and assessed two approaches for safe identification of the VA, lateral to medial and medial to lateral dissection of the TP, in 20 cadavers...
February 18, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28209646/rete-mirabile-associated-with-pial-arteriovenous-fistula-imaging-features-with-literature-review
#6
Prabath Kumar Mondel, Rashmi Saraf, Uday S Limaye
A rete mirabile is a vascular network of intercommunicating small arteries or arterioles that replace the definitive adult artery supplying the brain. It supplies the brain in lower mammals but is not seen in normal human embryological development. A 26-year-old man presented with worsening tinnitus that was interfering with his sleep. On CT and digital subtraction angiography he was found to have a temporal lobe pial arteriovenous fistula with bilateral carotid and vertebral rete mirabile. The patient was offered open surgical and endovascular treatment options for pial arteriovenous fistula but he refused both and opted for conservative medical management...
February 16, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28209578/intraforaminal-location-of-thoracolumbar-radicular-arteries-providing-an-anterior-radiculomedullary-artery-using-flat-panel-catheter-angiotomography
#7
L Gregg, D E Sorte, P Gailloud
BACKGROUND AND PURPOSE: Flat panel catheter angiotomography performed during the selective injection of intersegmental arteries offers a multiplanar assessment of the intraforaminal course of the radicular arteries providing an anterior radiculomedullary artery. Injury of anterior radiculomedullary arteries during transforaminal epidural steroid injections can result in spinal cord damage. Evaluations of the intraforaminal location of these arteries have so far been limited to anteroposterior views or the examination of cadaveric material...
February 16, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28207465/two-rare-variants-of-left-vertebral-artery
#8
Rajani Singh
Though the variations of vertebral artery are clinically asymptomatic yet abnormalities are of diagnostic importance either prior to vascular surgery in the neck region or in patients of intravascular diseases such as arteriovenous malformations or cerebral aneurysms. Therefore, the aim of the study is to bring out 2 variations in the configuration of vertebral artery and their clinical implication. During dissection of thorax of 2 female cadavers, 2 different variants of configurations of left vertebral arteries were observed...
February 15, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28204927/bicortical-facet-screws-as-a-new-option-for-posterior-c2-fixation-anatomical-study-and-clinical-experience
#9
Angelo Rusconi, E Freitas-Olim, P Coloma, R Messerer, C Barrey
PURPOSE: C2 fixation is a demanding procedure, particularly in patients with variants of C1-C2 anatomy. The inferior articular process (IAP) of the axis can be an alternative for screw placement. We report the results of a CT study of C2 IAP anatomy and we present the clinical experience of 28 patients operated with this technique. METHODS: Anatomical study: 50 CT angiographies of the vertebral arteries (VA) were used for this study and, therefore, 100 IAPs were considered...
February 15, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28196941/histopathological-differences-between-the-anterior-and-posterior-brain-arteries-as-a-function-of-aging
#10
William Roth, Susan Morgello, James Goldman, Jay P Mohr, Mitchell S V Elkind, Randolph S Marshall, Jose Gutierrez
BACKGROUND AND PURPOSE: We tested the hypothesis that posterior brain arteries differ pathologically from anterior brain arteries and that this difference varies with age. METHODS: Brain large arteries from 194 autopsied individuals (mean age 56±17 years, 63% men, 25% nonwhite, 17% with brain infarcts) were analyzed to obtain the areas of arterial layers and lumen as well as the relative content of elastin, collagen, and amyloid. Visual rating was used to determine the prevalence of atheroma, calcification, vasa vasorum, pattern of intima thickening, and internal elastic lamina gaps...
February 14, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28193134/non-coronary-vascular-calcification-bone-mineral-density-and-muscle-mass-in-institutionalized-frail-nonagenarians
#11
Fernando Idoate, Eduardo L Cadore, Alvaro Casas-Herrero, Fabricio Zambom-Ferraresi, Nicolas Martinez-Velilla, Leocadio Rodriguez-Mañas, Pedro M Azkarate, Martim Bottaro, Robison Ramírez-Vélez, Mikel Izquierdo
The purpose of this study was to compare the vascular calcification at thoracic (TAC) and ab-dominal (AAC) aorta, iliac (IAC) and femoral (FAC) arteries, and bone mineral density (BMD) of the lumbar vertebrae between frail and robust nonagenarians, as well as to verify the associations between vascular calcification with BMD, muscle tissue quality and quantity in both groups. Forty-two elderly subjects participated in this study: 29 institutionalized frail (92.0±3.2 years) and 13 ro-bust (89.0±4.0 years) elderly participants...
February 14, 2017: Rejuvenation Research
https://www.readbyqxmd.com/read/28192864/a-reassessment-of-cervical-surface-anatomy-via-ct-scan-in-an-adult-chinese-population
#12
Xin-Hua Shen, Hua-Dan Xue, Yu Chen, Man Wang, S Ali Mirjalili, Zhu-Hua Zhang, Chao Ma
Surface landmarks in the neck are important for orientations of cervical glands, arteries, veins, nerves and vertebrae. Recent research suggests some orientations are not correct. What are the cervical landmark orientations in the Chinese population? In this study, two essential cervical anatomy planes, the thyroid cartilage and C7 planes, were assessed in living adult Chinese subjects using computed tomography (CT), and the hyoid, carotid bifurcation, cricoid cartilage, thyroid arteries and vertebral artery were simultaneously positioned...
February 13, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28192269/anterior-transposition-of-anomalous-tortuous-vertebral-artery-causing-cervical-radiculopathy-a-report-of-2-cases-and-review-of-literature
#13
Doris D Wang, Jan-Karl Burkhardt, Stephen T Magill, Michael T Lawton
BACKGROUND: Cervical radiculopathy secondary to compression from vertebral artery (VA) tortuosity is a rare entity. OBJECTIVE: To describe successful transposition of tortuous VA loops causing cervical radiculopathy through an anterolateral approach. METHODS: Two patients with cervical radiculopathy (first case at C5-6 and second case at C3-4) secondary to anomalous VA loop compression underwent anterolateral approaches to the cervical spine for decompression and VA transposition...
February 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28192264/balloon-angioplasty-for-in-stent-restenosis-resulting-in-carotid-stent-fracture-with-literature-review-of-stent-in-stent-technique-as-a-viable-therapeutic-option
#14
Abdul-Haseeb Naeem, Ghaya Al-Rumaihi, Amirpouyan Namavarian, Manas Sharma, Melfort Boulton
BACKGROUND: Carotid stent fractures are rare and multiple etiologies have been proposed to explain their occurrence. We present a patient with a internal carotid artery (ICA) stent who developed in-stent restenosis. We performed balloon angioplasty to address in-stent restenosis but post-procedure he developed a carotid stent fracture. To our knowledge, balloon angioplasty has not been reported to cause stent fractures and we report the first case report. CASE DESCRIPTION: 72-year-old male underwent stenting for symptomatic left ICA stenosis with post-stenting residual stenosis of 55%...
February 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28191625/iatrogenic-vascular-injuries-due-to-spinal-surgeries-endovascular-perspective
#15
Mustafa Gok, Elcin Aydin, Serkan Guneyli, Ali Akay, Celal Cinar, Ismail Oran
AIM: Iatrogenic vascular injuries due to spinal surgeries are rare but serious complications. Surgical management of these injuries is challenging with high morbidity rates. In this study we aim to present the results of endovascular management of iatrogenic vascular injuries due to spinal surgeries. MATERIAL AND METHODS: We retrospectively reviewed 11 patients (5 male, 6 female) who had vascular injuries due to cervical and lumbar spinal surgeries. Clinical findings were bleeding (n=5), leg edema (n=6) and right heart failure with severe dyspnea (n=1)...
January 17, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28190553/cervical-spine-imaging-for-young-children-with-inflicted-trauma-expanding-the-injury-pattern
#16
Joanne Baerg, Arul Thirumoorthi, Rosemary Vannix, Asma Taha, Amy Young, Alexander Zouros
AIM: The purpose of this study was to document the incidence and pattern of cervical spine (c-spine) injuries in children below 36months with inflicted trauma. METHODS: An IRB approved, prospective cohort study was performed between July 2011 and January 2016. Inclusion criteria were: age below 36months, loss of consciousness after inflicted trauma, and one initial head computed tomography finding: a subdural, intraventricular, intraparenchymal, subarachnoid hemorrhage, diffuse axonal injury, hypoxic injury, or cerebral edema...
January 30, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28188214/transcranial-doppler-determined-change-in-posterior-cerebral-artery-blood-flow-velocity-does-not-reflect-vertebral-artery-blood-flow-during-exercise
#17
Takuro Washio, Hiroyuki Sasaki, Shigehiko Ogoh
We examined whether a change in posterior cerebral artery flow velocity (PCAv) reflected the posterior cerebral blood flow, in healthy subjects, during both static and dynamic exercise. PCAv and vertebral artery (VA) blood flow, as an index of posterior blood flow, were continuously measured during an exercise trial, using transcranial Doppler (TCD) ultrasonography and Doppler ultrasound, respectively. Static handgrip exercise significantly increased both PCAv and VA blood flow. Increasing intensity of dynamic exercise further increased VA blood flow from moderate exercise, while PCAv decreased to almost resting level...
February 10, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28185148/simultaneous-lateral-ponticle-with-facet-like-depression-and-epitransverse-process-of-the-atlas
#18
Jocelyn Gonzales, Vlad Voin, Joe Iwanaga, Cameron Schmidt, Christian Fisahn, Fernando Alonso, Rod J Oskouian, R Shane Tubbs
The lateral ponticle and epitransverse process are rare anatomical variations found on the atlas vertebra of the cervical spine. When a lateral ponticle occurs, an abnormal bony bridge extends from the superior articular facet to the transverse process. This bony bridge bisects the transverse foramen wherein the vertebral artery normally lies. In this case report, we describe a C1 specimen from an adult male with a lateral ponticle on the right side and an epitransverse process on the left side. Additionally, an articular facet-like structure was also found on the lateral ponticle's surface...
February 9, 2017: Anatomical Science International
https://www.readbyqxmd.com/read/28181413/morphometry-and-variability-of-the-brain-arterial-circle-in-chinchilla-chinchilla-laniger-molina
#19
Jacek Kuchinka
Arterial circles of brains from 70 adult chinchillas were filled with synthetic latex. The arterial circle of the brain is formed as the result of vertebral arteries being merged into the basilar artery. Caudally, both vertebral arteries gave rise to the ventral spinal artery. The ventral spinal artery splits into tiny cerebellar vessels, the pontine and cochlear branches. Distally, the basilar artery ramified into two terminal branches that formed the arterial circle of brain, rostrally open in most cases (75%)...
February 9, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28179256/zebrafish-mesonephric-renin-cells-are-functionally-conserved-and-comprise-of-two-distinct-morphological-populations
#20
Sebastien A Rider, Helen C Christian, Linda J Mullins, Amelia R Howarth, Calum A MacRae, John J Mullins
Zebrafish provide an excellent model in which to assess the role of the renin-angiotensin system in renal development, injury and repair. In contrast to mammals, zebrafish kidney organogenesis terminates with the mesonephros. Despite this, the basic functional structure of the nephron is conserved across vertebrates. The relevance of teleosts for studies relating to the regulation of the renin-angiotensin system was established by assessing the phenotype and functional regulation of renin-expressing cells in zebrafish...
February 8, 2017: American Journal of Physiology. Renal Physiology
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