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Arteriovenous fistula

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https://www.readbyqxmd.com/read/29227408/the-hybrid-technical-management-of-large-and-complicated-traumatic-arteriovenous-fistula-of-preauricular-region
#1
Jian Guo, Rucai Zhan, Yong Ren, Xiangjing Meng, Rengli Liu, Guijie Li, Dong Wang, Jinlong Sun
BACKGROUND: Arteriovenous fistula (AVF) is defined as an abnormal communication between the high flow arterial system and the low flow venous network, which directly connects the arterial feeding vessels and the near draining veins without normal intervening capillary bed. Arteriovenous fistula incurs in preauricular region is exceeding rare. Most of these fistulae occur as a result of an iatrogenic injury, the volume is small, feeding and draining vessels of feeding and draining are simple, and can be cured easily...
December 7, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29226895/a-late-complication-of-coronary-artery-perforation-during-primary-percutaneous-coronary-intervention-coronary-arteriovenous-fistula
#2
Kayıhan Karaman, Metin Karayakalı, Arif Arısoy, İlker Akar, Ataç Çelik
Coronary artery perforation (CAP) is a rare, but potentially mortal possible complication of percutaneous coronary intervention. There are several treatment options for this complication, including prolonged balloon dilatation, use of a coronary stent graft, and bypass surgery. In this case report, a 65-year-old female patient who was admitted to the catheter laboratory with a diagnosis of acute coronary syndrome, was presented. Coronary angiography revealed total occlusion in the mid segment of the right coronary artery and a drug-eluting stent was implanted under 12 atm of pressure following pre-dilatation with a perfusion balloon...
December 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/29225249/acute-tetraparesis-with-respiratory-failure-after-steroid-administration-in-a-patient-with-a-dural-arteriovenous-fistula-at-the-craniocervical-junction-a-case-report
#3
Hisashi Takahashi, Taiki Ueshima, Daiki Goto, Tadashi Kimura, Natsuko Yuki, Yasuo Inoue, Akira Yoshioka
A 63-year-old man developed vomiting, paraparesis, dysuria, bulbar palsy, and orthostatic hypotension over a period of 5 months. Neuroradiological examinations showed a swollen lower brainstem with a dural arteriovenous fistula at the craniocervical junction (DAVF-CCJ). A steroid was administered intravenously in the hospital to relieve brainstem edema. A few hours later, however, the patient developed acute tetraparesis with respiratory failure. Recently, there have been several reports describing the acute worsening of paraparesis in patients with a spinal dural arteriovenous fistula after steroid treatment...
December 8, 2017: Internal Medicine
https://www.readbyqxmd.com/read/29224945/an-age-based-comparison-of-fistula-location-patency-and-maturation-for-elderly-renal-failure-patients
#4
Jonathan Misskey, Jason Faulds, Ravi Sidhu, Keith Baxter, Joel Gagnon, York Hsiang
OBJECTIVE: Current Kidney Disease Outcomes Quality Initiative guidelines do not incorporate age in determining autogenous arteriovenous hemodialysis access placement, and the optimal initial configuration in elderly patients remains controversial. We compared patency, maturation, survival, and complications between several age cohorts (<65 years, 65-79 years, >80 years) to determine whether protocols should be modified to account for advanced age. METHODS: All patients at two teaching hospitals undergoing a first autogenous arteriovenous access creation in either arm between 2007 and 2013 were retrospectively analyzed from a prospectively maintained database...
December 7, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29221837/a-single-center-retrospective-analysis-of-the-efficacy-of-a-new-balloon-catheter-in-autogenous-arteriovenous-fistula-dysfunction-resistant-to-conventional-balloon-angioplasty
#5
Xiaolei Sun, Yanzheng He, Yarong Ma, Huqiang He, Lei Zhang, Ivo Ricardo de Seabra Rodrigues Dias, Yong Liu
PURPOSE: To present a new alternative balloon catheter option for autogenous arteriovenous fistula (AVF) dysfunction with stiff constriction resistant to conventional balloon angioplasty. METHODS: Our first series of 51 patients with autogenous AVF dysfunction who were simultaneously treated with VascutrakTM balloon catheter, following failed conventional balloon therapy (failure was defined as residual stenosis of >30%), were retrospectively observed and analyzed...
December 5, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29217743/dural-arteriovenous-fistulas-a-characteristic-pattern-of-edema-and-enhancement-of-the-medulla-on-mri
#6
A Z Copelan, A Krishnan, H Marin, R Silbergleit
Medullary edema with enhancement is rarely reported at initial MR imaging in intracranial dural arteriovenous fistulas. We report a series of 5 patients with dural arteriovenous fistulas, all of whom demonstrated a characteristic pattern of central medullary edema and medullary enhancement at initial MR imaging. Cognard type V dural arteriovenous fistula, defined by drainage into the perimedullary veins and the veins surrounding the brain stem, is a rare yet well-described pathologic entity. Even more rarely reported, however, is its clinical presentation with predominantly bulbar symptoms and MR imaging findings of central medullary edema with enhancement...
December 7, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29209823/autologous-arteriovenous-fistulas-for-hemodialysis-using-microsurgery-techniques-in-children-weighing-less-than-20%C3%A2-kg
#7
Vasiliki Karava, Pascal Jehanno, Theresa Kwon, Georges Deschênes, Marie-Alice Macher, Pierre Bourquelot
BACKGROUND: This study aimed to describe the efficiency and longevity of arteriovenous fistula (AVF) for hemodialysis (HD) in children weighing ≤20 kg. METHODS: We collected data of all AVFs created using microsurgery techniques between 1988 and 2015. Success was considered as the ability to use the AVF for HD. Primary and secondary patency rates were measured. RESULTS: Forty-eight AVFs (35 forearm, 13 upper arm) were created in 41 children with a median weight of 13...
December 5, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/29204306/facial-palsy-after-embolization-of-dural-arteriovenous-fistula-a-case-report-and-literature-review
#8
Luana Antunes Maranha Gatto, Fernando Saurin, Gelson Luis Koppe, Zeferino Demartini
Background: Dural arteriovenous fistulas (DAVF) are unusual intracranial vascular malformations consisting of anomalous connections between meningeal arteries and dural sinuses or the veins that pass through them. They have variable clinical presentation and prognosis, which depend on their location and venous hemodynamics. Treatment is based on the closure of the abnormal connections, which is usually conducted via arterial and/or transvenous endovascular techniques. Case Description: We present a male patient who complained of headaches and left-sided pulsatile tinnitus due to DAVF from the external carotid artery branches draining directly into the ipsilateral sigmoid sinus...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/29201854/traumatic-intracerebral-and-subarachnoid-hemorrhage-due-to-a-ruptured-pseudoaneurysm-of-middle-meningeal-artery-accompanied-by-a-medial-sphenoid-wing-dural-arteriovenous-fistula
#9
Jae Won Park, Jong Young Lee
Traumatic pseudoaneurysms of middle meningeal artery (MMA) and medial sphenoid wing dural arteriovenous fistula (dAVF) are rare. These lesions usually result from traumatic brain injury, and associated with skull fracture. In this paper, the authors report a case of a patient with a ruptured traumatic pseudoaneurysm of MMA and medial sphenoid wing dAVF presented with an intracerebral hemorrhage in the left temporal region and subarachnoid hemorrhage. These lesions were completely obliterated by endovascular treatment, and the patient was recovered without any neurologic deficit...
October 2017: Korean Journal of Neurotrauma
https://www.readbyqxmd.com/read/29201224/expression-of-nf-e2-related-factor-2-in-a-rat-dural-arteriovenous-fistula-model
#10
Limin Dou, Wenhua Yu
Intracranial dural arteriovenous fistulas (DAVFs) are complex intracranial vascular malformations that may lead to hemorrhage. Although the precise mechanisms by which DAVFs occur remain unknown, dural angiogenesis may be a vital factor in its pathogenesis. Nuclear factor erythroid 2-related factor 2 (Nrf2) significantly influences angiogenesis; however, the association between DAVF and Nrf2 remains unclear. Therefore, the present study investigated whether DAVF alters the expression of Nrf2 in an experimental animal model of DAVF...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29199500/management-of-a-rare-case-of-posterior-condylar-canal-dural-arteriovenous-fistula-presenting-with-subarachnoid-haemorrhage-a-case-report-and-review-of-literature
#11
Somorendra Singh Shambanduram, Leve Joseph Devarajan Sebastian, Nishchint Jain, Ajay Garg, Shailesh B Gaikwad
Posterior condylar canal dural arteriovenous fistula (PCC dAVF) is a rare entity with only three cases having been reported so far in the English literature. We describe the clinical presentation, imaging, and endovascular management of an elderly man with left PCC dAVF presenting with subarachnoid haemorrhage (SAH). Endovascular management of such cases requires thorough understanding of the vascular anatomy around the craniovertebral junction (CVJ) and variable bridging vein draining patterns. The fistula in our case was fed by the posterior meningeal branch of the left vertebral artery and was draining through a dilated and tortuous medullary bridging vein into the antero-lateral pontomedullary venous system...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29199428/cluster-headache-and-middle-meningeal-artery-dural-arteriovenous-fistulas-a-case-report
#12
Yu-Han Chang, Chao-Bao Luo, Shuu-Jiun Wang, Shih-Pin Chen
Background Of the multiple etiologies identified for symptomatic cluster headache, vascular origin is common; however, there are no known reports of arteriovenous (AV) fistulas. Here we report a case with typical presentation of cluster headache, which might be associated with middle meningeal AV fistulas. Case report The subject is a 49-year-old man with a 7-year history of episodic left-side cluster headache, consistent with the criteria in the International Classification of Headache Disorders, 3rd edition, beta version (ICHD-3β)...
January 1, 2017: Cephalalgia: An International Journal of Headache
https://www.readbyqxmd.com/read/29198387/international-differences-in-the-location-and-use-of-arteriovenous-accesses-created-for-hemodialysis-results-from-the-dialysis-outcomes-and-practice-patterns-study-dopps
#13
Ronald L Pisoni, Lindsay Zepel, Richard Fluck, Charmaine E Lok, Hideki Kawanishi, Gültekin Süleymanlar, Haimanot Wasse, Francesca Tentori, Jarcy Zee, Yun Li, Douglas Schaubel, Steven Burke, Bruce Robinson
BACKGROUND: Vascular access practice is strongly associated with clinical outcomes. There is substantial international variation in the use of arteriovenous fistulas (AVFs) and grafts (AVGs), as well as AVF maturation time and location. STUDY DESIGN: Prospective cohort study. SETTING & PARTICIPANTS: Hemodialysis patients participating in the prospective Dialysis Outcomes and Practice Patterns Study (DOPPS) from the United States, Japan, and Europe/ANZ (Belgium, France, Germany, Italy, Spain, Sweden, United Kingdom, Australia, and New Zealand), including 3,850 patients receiving 4,247 new AVFs and 842 patients receiving 1,129 new AVGs in 2009 to 2015...
November 29, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/29196574/clinical-biomarkers-differentiate-myelitis-from-vascular-and-other-causes-of-myelopathy
#14
Paula Barreras, Kathryn C Fitzgerald, Maureen A Mealy, Jorge A Jimenez, Daniel Becker, Scott D Newsome, Michael Levy, Philippe Gailloud, Carlos A Pardo
OBJECTIVE: To assess the predictive value of the initial clinical and paraclinical features in the differentiation of inflammatory myelopathies from other causes of myelopathy in patients with initial diagnosis of transverse myelitis (TM). METHODS: We analyzed the clinical presentation, spinal cord MRI, and CSF features in a cohort of 457 patients referred to a specialized myelopathy center with the presumptive diagnosis of TM. After evaluation, the myelopathies were classified as inflammatory, ischemic/stroke, arteriovenous malformations/fistulas, spondylotic, or other...
December 1, 2017: Neurology
https://www.readbyqxmd.com/read/29192863/precipitating-hydrophobic-injectable-liquid-embolization-of-intracranial-vascular-shunts-initial-experience-and-technical-note
#15
Shriram Varadharajan, Arvinda Hanumanthapura Ramalingaiah, Jitender Saini, Arun Kumar Gupta, B Indira Devi, Ullas V Acharya
Precipitating hydrophobic injectable liquid (PHIL) is a newly available liquid embolic agent for endovascular therapy. It is nonadhesive and composed of a biocompatible polymer dissolved in dimethyl sulfoxide solvent and bonded covalently with iodine. In this report, the authors present their preliminary experience using PHIL in the treatment of intracranial vascular shunts. Between July 2015 and December 2015, 11 patients underwent endovascular embolization using the PHIL embolic agent. Five patients had arteriovenous malformations, 4 had dural arteriovenous fistulas, 1 patient had a carotid-cavernous fistula, and 1 patient had a pial arteriovenous fistula...
December 1, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29192722/cephalic-vein-transposition-is-a-durable-approach-to-managing-cephalic-arch-stenosis
#16
Jon C Henry, Ulka Sachdev, Eric Hager, Ellen Dillavou, Theodore Yuo, Michel Makaroun, Steven A Leers
INTRODUCTION: The proximal cephalic vein that enters the axillary vein (cephalic arch) is a common site of stenosis in patients with upper extremity arteriovenous fistulas for hemodialysis (HD). In this study, we present the outcomes of a series of cephalic vein transposition, to determine its utility in the setting of refractory arch stenosis. METHODS: We conducted a retrospective review of patients undergoing cephalic vein transposition to manage refractory cephalic arch stenosis from January 1, 2008 to August 31, 2015...
November 25, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/29192721/haemodialysis-vascular-access-current-practices-amongst-indian-nephrologists
#17
Dinesh Bansal, Vijay Kher, Krishan Lal Gupta, Debasish Banerjee, Vivekanand Jha
INTRODUCTION: Despite the growing number of haemodialysis (HD) patients in India, little is known about vascular access practice. We investigated the use and cost of different vascular accesses by Indian nephrologists. METHODS: An online survey was emailed to 920 Indian nephrologists and 388 (42.1%) responded; 98.5% of whom were responsible for managing dialysis patients, 98% in hospitals. RESULTS: Sixty-four percent of patients initiated renal replacement therapy with HD, 7% with peritoneal dialysis, 10% kidney transplantation and 19% conservative care...
November 25, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/29192720/resolution-of-reactive-angioendotheliomatosis-in-an-arteriovenous-fistula-with-innominate-vein-angioplasty
#18
Voranaddha Vacharathit, Steven D Billings, Lee Kirksey
INTRODUCTION: Arteriovenous fistulae (AVF)-associated reactive angioendotheliomatosis (RAE) is a very rare entity (three previously reported cases in the literature) that can manifest as extremity wounds. RAE's etiopathology is unknown. CASE DESCRIPTION: We report a case of severe limb-threatening upper extremity wound with pathology-proven RAE. This lesion was previously refractory to standard wound care. There was no evidence of limb ischemia or steal syndrome, previously deemed to be the underlying cause of AVF-associated RAE in other reports...
November 25, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/29191547/pial-arteriovenous-fistula-a-brief-review-and-report-of-14-surgically-treated-cases
#19
Atul Goel, Sonal Jain, Abhidha Shah, Survendra Rai, Sandeep Gore, Pralhad Dharurkar
AIM: The authors report their successful experience of treating 14 cases of pial arteriovenous fistula (PAVF) by direct surgery. MATERIAL AND METHODS: During the period January 2010 to April 2017, fourteen patients having PAVF were treated by surgery. Only those cases were selected that had a single arterial feeding channel. There were 9 males and 5 females and their ages ranged from 5 to 53 years (average 19 years). Ten patients were less than 20 years of age. Five patients presented clinical and radiological features that suggested hemorrhage from the PAVF...
November 27, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29188313/arteriovenous-fistula-maturation-failure-in-a-large-cohort-of-hemodialysis-patients-in-the-netherlands
#20
Bram M Voorzaat, Koen E A van der Bogt, Cynthia J Janmaat, Jan van Schaik, Friedo W Dekker, Joris I Rotmans
OBJECTIVES: Radiocephalic arteriovenous fistulas (RCAVF) are the preferred vascular access (VA) for hemodialysis (HD). Cohort studies from North America revealed that nonmaturation is a significant disadvantage of RCAVFs compared to other VAs. DESIGN: This present retrospective study describes the incidence of nonmaturation of AVFs and functional failure of arteriovenous grafts (AVG) in a multicentre cohort in the Netherlands and attempts to create a prediction model for nonmaturation of RCAVFs...
November 29, 2017: World Journal of Surgery
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