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Arteriovenous fistulae

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https://www.readbyqxmd.com/read/28731493/lower-extremity-dialysis-arteriovenous-graft-patency-preservation-due-to-traumatic-fistula-to-adjacent-vein
#1
Michael Oster, Offer Galili, Alicia Nachtigal, Dan Hebron
No abstract text is available yet for this article.
July 20, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28731490/lancisi-s-sign-and-central-venous-catheter-tip-position-a-case-report
#2
Valentina Vigo, Piero Lisi, Giuseppe Galgano, Carlo Lomonte
INTRODUCTION: Valvular disease and pulmonary hypertension are common conditions in haemodialysis patients. In presence of tricuspid regurgitation, an increased retrograde blood flow into the right atrium during ventricle systole results in a typical modification of the normal venous waveform, creating a giant c-v wave. This condition clinically appears as a venous palpable pulsation within the internal jugular vein, also known as Lancisi's sign. CASE REPORT: An 83-year-old woman underwent haemodialysis for 9 years...
July 19, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28731380/first-experience-of-performing-hybrid-operations-in-chronic-venous-obstructions-of-iliofemoral-segments-in-patients-with-postthrombotic-syndrome
#3
Anatoly Pokrovsky, Igor Ignatyev, Evgeny Gradusov
OBJECTIVE: To assess the first results of hybrid operations in chronic venous obstructions of iliofemoral segments in patients with postthrombotic syndrome (PTS). METHODS: Hybrid operations (open endovenectomy from the common femoral vein with arteriovenous fistula creation and iliac vein stenting) were performed in 12 patients diagnosed with PTS. All of the patients were diagnosed with severe chronic venous insufficiency. The degree of manifestations of PTS was assessed by means of the Villalta score 7 months before and after the surgical intervention...
January 1, 2017: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28730721/ephb4-mutation-implicated-in-capillary-malformation-arteriovenous-malformation-syndrome-a-case-report
#4
JiaDe Yu, Jenna L Streicher, Livija Medne, Ian D Krantz, Albert C Yan
Capillary malformation-arteriovenous malformation (CM-AVM) syndrome, due to inactivating mutations in RASA1 in 68% of cases, is characterized by the development of cutaneous capillary malformations and arteriovenous malformations or fistulas; no known genetic etiology has been identified in patients with CM-AVM syndrome without RASA1 mutations. We present the case of a child with RASA1-negative CM-AVM syndrome with a de novo missense mutation in EPHB4, a transmembrane tyrosine kinase receptor essential for vasculogenesis...
July 21, 2017: Pediatric Dermatology
https://www.readbyqxmd.com/read/28730314/spontaneous-thrombosis-of-a-giant-cerebral-varix-in-a-pediatric-patient
#5
Mesut Ozturk, Serdar Aslan, Meltem Ceyhan Bilgici, Aysegul Idil Soylu, Keramettin Aydin
INTRODUCTION: Cerebral cortical venous aneurysm also known as cerebral varix is a rare entity that usually occurs in relation to high-flow draining veins of arteriovenous fistulas, arteriovenous malformations, and venous angioma. Isolated cerebral varix is an extremely rare entity. CASE REPORT: We present a 1-year-old male with isolated cerebral varix. During follow-up, the varix thrombosed spontaneously without causing any neurological deficits. CONCLUSION: To the best of our knowledge, spontaneous asymptomatic thrombosis of an isolated cerebral varix without any clinical finding was reported for the first time in the literature...
July 20, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28729296/analysis-of-30-spinal-angiograms-falsely-reported-as-normal-in-18-patients-with-subsequently-documented-spinal-vascular-malformations
#6
P Barreras, D Heck, B Greenberg, J-P Wolinsky, C A Pardo, P Gailloud
BACKGROUND AND PURPOSE: The early diagnosis of spinal vascular malformations suffers from the nonspecificity of their clinical and radiologic presentations. Spinal angiography requires a methodical approach to offer a high diagnostic yield. The prospect of false-negative studies is particularly distressing when addressing conditions with a narrow therapeutic window. The purpose of this study was to identify factors leading to missed findings or inadequate studies in patients with spinal vascular malformations...
July 20, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28728535/endovascular-occlusion-of-pial-arteriovenous-macrofistulae-using-pcanvas1-and-adenosine-induced-asystole-to-control-nbca-injection
#7
P Lylyk, J Chudyk, C Bleise, C Serna Candel, M Aguilar Pérez, H Henkes
Background In large-caliber pial macrofistulae (pMF), the combination of high blood flow velocity and large efferent artery diameter makes control over the endovascular vessel occlusion difficult and may result in the inadvertent venous passage of occlusive devices or embolic agents. Case descriptions Patient 1: A 27-year-old man presented with headache and ataxia. An infratentorial pMF supplied by both superior cerebellar arteries with venous ectasia was found. The first treatment attempt using balloons and coils failed since the position of either device could not be controlled because of a distal diameter of the feeding artery of 8 mm...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28728480/safety-and-efficacy-of-stenting-nonthrombotic-iliac-vein-lesions-in-octogenarians-and-nonagenarians-in-an-office-setting
#8
Pavel Kibrik, Justin Eisenberg, Ahmad Alsheekh, Syed Ali Rizvi, Afsha Aurshina, Natalie Marks, Anil Hingorani, Enrico Ascher
Objectives Treatment options for venous insufficiency are rapidly evolving in the office setting and include venography, intravascular ultrasound, and venous stenting. Non-thrombotic iliac vein lesions assessment and treatment in an office setting is currently an area of interest. The purpose of this study is to demonstrate the safety and efficacy of evaluating non-thrombotic iliac vein lesion with this office-based procedure in octogenarians and nonagenarians. Methods From January 2012 through December 2013, 300 non-thrombotic iliac vein lesion limbs in 192 patients with venous insufficiency ≥80 years old were evaluated for non-thrombotic iliac vein lesion...
January 1, 2017: Vascular
https://www.readbyqxmd.com/read/28725317/prevalence-of-metabolic-syndrome-among-the-end-stage-renal-disease-patients-on-hemodialysis
#9
Khaled A Alswat, Awwadh Althobaiti, Khulod Alsaadi, Amaal Saeed Alkhaldi, Maryam Mutlaq Alharthi, Walaa Abduraheem Abuharba, Ahmed A Alzaidi
BACKGROUND: Patients with metabolic syndrome (MetS) have a 2.6-fold greater risk of incident chronic kidney disease (CKD). The primary goal of this study was to assess the prevalence of MetS in patients with end-stage renal disease (ESRD) who are on hemodialysis (HD) and the impact of MetS presence on HD-related outcomes. METHODS: This is a cross-sectional study conducted in the Dialysis Center, King Abdulaziz Specialist Hospital, Taif, Saudi Arabia. It was conducted among ESRD patients that attended the Dialysis Center between August 2013 and September 2016...
August 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/28724774/histopathology-of-veins-obtained-at-hemodialysis-arteriovenous-fistula-creation-surgery
#10
Charles E Alpers, Peter B Imrey, Kelly L Hudkins, Tomasz A Wietecha, Milena Radeva, Michael Allon, Alfred K Cheung, Laura M Dember, Prabir Roy-Chaudhury, Yan-Ting Shiu, Christi M Terry, Alik Farber, Gerald J Beck, Harold I Feldman, John W Kusek, Jonathan Himmelfarb
Stenosis from venous neointimal hyperplasia is common in native arteriovenous fistulas (AVFs). However, the preexisting histologic characteristics of veins at fistula creation, and associations thereof with baseline patient factors, have not been well characterized. In this study, we conducted histologic analysis of a segment of the vein used for anastomosis creation, obtained during AVF creation from 554 of the 602 participants in the multicenter Hemodialysis Fistula Maturation Cohort Study. We quantified intimal and medial areas and lengths of the internal and external elastic lamina by morphometry and assessed venous wall cells by immunohistochemistry, extracellular matrix with Movat stain, and calcium deposition by alizarin red stain...
July 19, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28720741/-transvenous-embolization-by-direct-puncture-of-the-superior-sagittal-sinus-using-indocyanine-green-icg-videoangiography-for-treatment-of-dural-arteriovenous-fistula-of-the-transverse-sigmoid-sinus-a-case-report
#11
Jo Matsuzaki, Kenichi Kono, Arisa Umesaki, Yojiro Kashimura, Hiroaki Matsumoto, Tomoaki Terada
We report a case of dural arteriovenous fistula at the left transverse sinus and sigmoid sinus(TS-dAVF), which was treated with transvenous embolization(TVE)by direct puncture of the superior sagittal sinus(SSS)under indocyanine green(ICG)fluoroscopic guidance. A 71-year-old woman presented with pulsatile tinnitus and progressive dementia. A left TS-dAVF with retrograde SSS and cortical venous reflux(Cognard type IIb)was demonstrated on cerebral angiography. The left internal jugular vein and distal portion of the right transverse sinus were occluded...
July 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28720740/-tentorial-dural-arteriovenous-fistula-successfully-treated-with-transvenous-embolization-using-a-double-catheterization-technique-through-venous-drainage-a-case-report
#12
Akira Yamakawa, Atsushi Fujita, Hirotomo Tanaka, Mitsuru Ikeda, Masashi Morikawa, Eiji Kohmura
BACKGROUND: Tentorial dural arteriovenous fistulas(dAVFs)are a rare clinical entity accounting for less than 10% of all intracranial dAVFs. Because these lesions are characterized by high hemorrhagic risk, aggressive treatment should be considered. Although the number of reported cases treated with endovascular transarterial embolization(TAE)using glue has been increasing, little is known about the transvenous approach. Here, we report the case of a patient with a tentorial dAVF who was successfully treated with transvenous embolization(TVE)through venous drainage using a double catheterization technique...
July 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28719480/a-rare-pediatric-case-of-posttraumatic-pseudoaneurysm-case-report-and-literature-review
#13
Ada Gu, April J Kam
Posttraumatic pseudoaneurysms are extremely rare in pediatric populations. In many cases, pseudoaneurysms may be confused with abscesses, epidermoid cysts, arteriovenous fistula, foreign objects, and ganglion cysts, as well as tumors. They are associated with distinguishing findings of "pulsatile mass, a palpable thrill, and an audible to-and-fro murmur" (1), which can be confirmed by various imaging techniques. In this report, we describe the case of a 4-year-old boy who presented to the pediatric emergency department 3 weeks after falling and subsequently getting cut by glass...
July 17, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28716281/-black-butterfly-sign-on-t2-weighted-and-susceptibility-weighted-imaging-a-novel-finding-of-chronic-venous-congestion-of-the-brain-stem-and-spinal-cord-associated-with-dural-arteriovenous-fistulas
#14
Mikako Enokizono, Noriko Sato, Minoru Morikawa, Yukio Kimura, Atsuhiko Sugiyama, Tomoko Maekawa, Daichi Sone, Daiki Takewaki, Tomoko Okamoto, Yuji Takahashi, Nobutaka Horie, Takayuki Matsuo
A dural arteriovenous fistula (DAVF) with spinal perimedullary venous drainage can cause progressive myelopathy, and it is sometimes incorrectly diagnosed as another spinal cord disease. Here we report the cases of three individuals with a DAVF (one craniocervical junction DAVF and two tentorial DAVFs) with progressive myelopathy showing unique magnetic resonance (MR) imaging findings. MR T2*WI or susceptibility-weighted imaging (SWI) demonstrated symmetrical dark signal intensity lesions predominantly in the dorsal aspect of medulla and the central gray matter of cervical spinal cord that showed the "black butterfly" silhouette...
August 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28713907/roles-of-mir%C3%A2-4463-in-h2o2%C3%A2-induced-oxidative-stress-in-human-umbilical-vein-endothelial-cells
#15
Xueqin Wang, Xuemei He, Xian Deng, Yanzheng He, Xiangyu Zhou
Oxidative stress is implicated in the pathophysiology of vascular diseases, including atherosclerosis, aneurysm and arteriovenous fistula. A previous study from our lab suggested that microRNA (miR)‑4463 may be involved in the pathogenesis of vascular disease; however, the roles of oxidative stress in the molecular mechanisms underlying the actions of miR‑4463 in vascular disease have yet to be elucidated. The aim of the present study was to investigate the role of miR‑4463 in hydrogen peroxide (H2O2)‑induced oxidative stress in human umbilical vein endothelial cells (HUVECs)...
July 15, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28712898/iatrogenic-vertebral-artery-injury-during-anterior-cervical-spine-surgery-a-systematic-review
#16
REVIEW
Qing Guan, Long Chen, Ye Long, Zhou Xiang
BACKGROUND: Iatrogenic vertebral artery injury (VAI) during anterior cervical surgery is rare but potentially catastrophic. METHOD: The causes, presentation, diagnosis, management, prognosis, and prevention of VAI were reviewed following Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. English-language studies and case reports published from 1980 to 2017 were retrieved. Data on diagnosis, surgical procedures and approach, site and cause of VAI, management, outcomes, and VA status were extracted...
July 13, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28711532/an-intraoperative-look-at-a-residual-recurrent-tentorial-dural-arteriovenous-fistula
#17
Bradley A Gross, Andrew F Ducruet, Brian T Jankowitz, Paul A Gardner
BACKGROUND: Dural arteriovenous fistulas (dAVF)s are often treated via transarterial or transvenous embolization. Incomplete penetration of the draining vein/occult residual will often become apparent on follow-up angiography, requiring repeat embolization, or at times, surgical resection. CASE DESCRIPTION: A 41 year old female presented with cerebellar hemorrhage from a tentorial dAVF treated with transvenous coil embolization. Follow-up angiography disclosed a residual/recurrent fistula treated with transvenous Onyx embolization...
July 12, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28710091/intimal-hyperplasia-stenosis-and-arteriovenous-fistula-maturation-failure-in-the-hemodialysis-fistula-maturation-study
#18
Alfred K Cheung, Peter B Imrey, Charles E Alpers, Michelle L Robbin, Milena Radeva, Brett Larive, Yan-Ting Shiu, Michael Allon, Laura M Dember, Tom Greene, Jonathan Himmelfarb, Prabir Roy-Chaudhury, Christi M Terry, Miguel A Vazquez, John W Kusek, Harold I Feldman
Intimal hyperplasia and stenosis are often cited as causes of arteriovenous fistula maturation failure, but definitive evidence is lacking. We examined the associations among preexisting venous intimal hyperplasia, fistula venous stenosis after creation, and clinical maturation failure. The Hemodialysis Fistula Maturation Study prospectively observed 602 men and women through arteriovenous fistula creation surgery and their postoperative course. A segment of the vein used to create the fistula was collected intraoperatively for histomorphometric examination...
July 14, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28710090/the-clinical-and-economic-effect-of-vascular-access-selection-in-patients-initiating-hemodialysis-with-a-catheter
#19
Alian Al-Balas, Timmy Lee, Carlton J Young, Jeffrey A Kepes, Jill Barker-Finkel, Michael Allon
Patients in the United States frequently initiate hemodialysis with a central venous catheter (CVC) and subsequently undergo placement of a new arteriovenous fistula (AVF) or arteriovenous graft (AVG). Little is known about the clinical and economic effects of initial vascular access choice. We identified 479 patients starting hemodialysis with a CVC at a large medical center (during 2004-2012) who subsequently had an AVF (n=295) or AVG (n=105) placed or no arteriovenous access (CVC group, n=71). Compared with patients receiving an AVG, those receiving an AVF had more frequent surgical access procedures per year (1...
July 14, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28708199/management-of-transposed-arteriovenous-fistula-swing-point-stenosis-at-the-basilic-vein-angle-of-transposition-by-stent-grafts
#20
George M Nassar, Gerald Beathard, Edward Rhee, Abdul Jabbar Khan, Binh Nguyen
INTRODUCTION: Transposed basilic vein arteriovenous fistulas suffer from stenosis at their basilic angle of transposition (BAT). This lesion exhibits frequent recurrence after angioplasty. The primary goal of this study was to determine the effect of stent-graft placement on BAT lesion- and access-patency. The secondary goals were to determine the frequency of intervention pre- and post-stent placement and stent-associated stenosis. METHODS: Thirty-seven cases had stent-grafts placed at their BAT to manage stenosis...
July 5, 2017: Journal of Vascular Access
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