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AV fistula assessment

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https://www.readbyqxmd.com/read/28937545/non-contrast-pseudo-continuous-arterial-spin-labeling-and-accelerated-3-dimensional-radial-acquisition-intracranial-3-dimensional-magnetic-resonance-angiography-for-the-detection-and-classification-of-intracranial-arteriovenous-shunts
#1
Tilman Schubert, Zachary Clark, Carolina Sandoval-Garcia, Ryan Zea, Oliver Wieben, Huimin Wu, Patrick A Turski, Kevin M Johnson
OBJECTIVES: The aim of this study was to assess the sensitivity and specificity of pseudo-continuous arterial spin labeling (PCASL) magnetic resonance angiography (MRA) with 3-dimensional (3D) radial acquisition for the detection of intracranial arteriovenous (AV) shunts. MATERIALS AND METHODS: A total of 32 patients who underwent PCASL-MRA, clinical magnetic resonance imaging (MRI)/MRA exam, and digital subtraction angiography (DSA) were included in this retrospective analysis...
September 20, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28902768/economic-and-clinical-outcomes-resulting-from-the-stage-4-chronic-kidney-disease-case-management-quality-improvement-initiative
#2
Beverly Everett, Liana D Castel, Matthew McGinnis, Amy Beresky, Rudolph C Cane, Tasha Cooper, Rajesh K Davda, Donna Farmer, Stella M John, Denise L Sollars, John F Rausch
PURPOSE OF STUDY: Chronic kidney disease (CKD) is a costly and burdensome public health concern. The goal of this study was to evaluate the impact on outcomes and utilization of a pilot program to identify and engage beneficiaries with CKD at risk for progression from Stage 4 to Stage 5. PRIMARY PRACTICE SETTINGS: A quality improvement initiative was conducted to assess the impact of case management on costs and outcomes among 7,720 Cigna commercial medical beneficiaries with Stage 4 CKD enrolled in the United States between January 2012 and October 2012...
November 2017: Professional Case Management
https://www.readbyqxmd.com/read/28862546/angioarchitecture-of-arteriovenous-fistulas-at-the-craniocervical-junction-a-multicenter-cohort-study-of-54-patients
#3
Masafumi Hiramatsu, Kenji Sugiu, Tomoya Ishiguro, Hiro Kiyosue, Kenichi Sato, Keisuke Takai, Yasunari Niimi, Yuji Matsumaru
OBJECTIVE The aim of this retrospective multicenter cohort study was to assess the details of the angioarchitecture of arteriovenous fistulas (AVFs) at the craniocervical junction (CCJ) and to determine the associations between the angiographic characteristics and the clinical presentations and outcomes. METHODS The authors analyzed angiographic and clinical data for patients with CCJ AVFs from 20 participating centers that are members of the Japanese Society for Neuroendovascular Therapy (JSNET). Angiographic findings (feeding artery, location of AV shunt, draining vein) and patient data (age, sex, presentation, treatment modality, outcome) were tabulated and stratified based on the angiographic types of the lesions, as diagnosed by a member of the CCJ AVF study group, which consisted of a panel of 6 neurointerventionalists and 1 spine neurosurgeon...
September 1, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28753408/contribution-of-monoamine-oxidases-to-vascular-oxidative-stress-in-patients-with-end-stage-renal-disease-requiring-hemodialysis
#4
Diana Uțu, Stelian Pantea, Oana M Duicu, Danina M Muntean, Adrian Sturza
Arteriovenous fistula (AVF) is the "lifeline" for patients with end-stage renal disease (ESRD) undergoing hemodialysis. AVF maturation failure is a poorly understood process, one of the contributors being endothelial dysfunction due to oxidative stress. Monoamine oxidases (MAOs) A and B were recently identified as novel sources of vascular oxidative stress. The aim of the present study was to assess the contribution of MAOs to the endothelial dysfunction in patients with ESDR with indication of hemodialysis...
November 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28705736/a-worldwide-experience-of-the-management-of-battery-failures-and-chronic-device-retrieval-of-the-nanostim-leadless-pacemaker
#5
Dhanunjaya Lakkireddy, Reinoud Knops, Brett Atwater, Petr Neuzil, John Ip, Elkin Gonzalez, Paul Friedman, Pascal Defaye, Derek Exner, Kazutaka Aonuma, Rahul Doshi, Johannes Sperzel, Vivek Reddy
BACKGROUND: The Nanostim leadless pacemaker (LP) met the primary endpoints in an investigational device exemption trial, and was shown to be fully retrievable percutaneously. In October 2016, St Jude Medical issued a worldwide alert of a battery malfunction that caused lost pacing output and LP communication. OBJECTIVE: To report the battery failure mechanism and incidence and the worldwide patient management, including device retrieval experiences. METHODS: The affected LP battery is a custom lithium-carbon monofluoride cell...
July 10, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28616563/low-rate-of-access-site-complications-after-transradial-coronary-catheterization-a-prospective-ultrasound-study
#6
Violeta Mattea, Carsten Salomon, Niels Menck, Philipp Lauten, Frank Michael Malur, Anja Schade, Frank Steinborn, Lisa Costello-Boerrigter, Axel Neumeister, Harald Lapp
BACKGROUND: Transradial artery (TRA) left heart catheterization is an increasingly used technique for both diagnostic and interventional coronary procedures. This study evaluates the incidence of access site complications in the current interventional era. METHODS AND RESULTS: A total of 507 procedures were performed under standardized conditions. Each procedure was performed using high levels of anticoagulation, hydrophilic sheaths, and short post-procedural compression times...
March 2017: IJC Heart & Vasculature
https://www.readbyqxmd.com/read/27964855/a-case-of-brachiocephalic-fistula-steal-and-the-emergency-physician-s-approach-to-hemodialysis-arteriovenous-fistula-complications
#7
Erica Simon, Brit Long, Kyle Johnston, Shane Summers
BACKGROUND: Chronic kidney disease is common in the United States, with many patients maintained on hemodialysis (HD). The process of HD requires vascular access through an arteriovenous (AV) fistula, AV graft, or central venous catheter. Today, as a result of the National Kidney Foundation's "Fistula First" initiative, nearly 55% of HD patients utilize an AV fistula. As there is significant morbidity and mortality associated with fistula placement and recurrent fistula cannulation, emergency physicians must be equipped to recognize and treat fistula complications...
December 10, 2016: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27868336/vascular-imaging-for-hemodialysis-vascular-access-planning
#8
Rita L McGill, Robin Ruthazer, Eduardo Lacson, Klemens B Meyer, Dana C Miskulin, Daniel E Weiner
INTRODUCTION: Central venous catheters (CVC) increase risks associated with hemodialysis (HD), but may be necessary until an arteriovenous fistula (AVF) or graft (AVG) is achieved. The impact of vascular imaging on achievement of working AVF and AVG has not been firmly established. METHODS: Retrospective cohort of patients initiating HD with CVC in 2010-2011, classified by exposure to venography or Doppler vein mapping, and followed through December 31, 2012. Standard and time-dependent Cox models were used to determine hazard ratios (HRs) of death, working AVF, and any AVF or AVG...
October 2017: Hemodialysis International
https://www.readbyqxmd.com/read/27866375/pre-operative-assessment-for-arteriovenous-fistula-placement-for-dialysis
#9
REVIEW
Maria G Marques, Pedro Ponce
Native AV fistulas are considered to be the best VA for most dialysis patients. A careful preoperative process of care is essential to maximize the proportion of fistulas that achieve adequacy for dialysis. An individualized and timely evaluation of patients starts early with the identification of risk factors, followed by a physical examination which should be complemented by ultrasound vascular mapping in most cases. Vascular mapping includes any technique that leads to information on patient's inflow and outflow anatomy (± hemodynamics) as they relate to arteriovenous access creation and may predict maturation...
January 2017: Seminars in Dialysis
https://www.readbyqxmd.com/read/27593970/acute-bithalamic-infarct-manifesting-as-sleep-like-coma-a-diagnostic-challenge
#10
Asaf Honig, Ruth Eliahou, Roni Eichel, Ari Aharon Shemesh, Tamir Ben-Hur, Eitan Auriel
Bilateral thalamic infarction (BTI) typically presents as a sleep-like coma (SLC) without localizing signs, posing a diagnostic challenge that may lead the treating physician to search for toxic or metabolic causes and delay treatment. We review our experience with BTI of different etiologies, and emphasize the critical role of timely imaging, diagnosis, and management in a series of 12 patients with a presentation of SLC and acute BTI who were managed in our Medical Centers from 2006-2015. In 11/12, urgent head CT scans showed normal brain tissue, while diffusion-weighted (DWI) MRI revealed symmetric bilateral thalamic hyperintense lesions with variable degrees of brainstem involvement...
December 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/27396717/epigenetic-silencing-of-timp4-in-heart-failure
#11
Pankaj Chaturvedi, Suresh C Tyagi
Tissue inhibitor of matrix metalloprotease 4 (TIMP4) is endogenously one of the key modulators of matrix metalloprotease 9 (MMP9) and we have reported earlier that cardiac specific TIMP4 instigates contractility and helps in differentiation of cardiac progenitor cells. Although studies show that the expression of TIMP4 goes down in heart failure but the mechanism is unknown. This study aims to determine the mechanism of silencing of TIMP4 in heart failure progression created by aorta-vena cava (AV) fistula...
November 2016: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/27312756/preoperative-vessel-mapping-in-chronic-kidney-disease-patients-a-center-experience
#12
Patrícia Barreto, Paulo Almeida, Norton de Matos, José Alexandre Queirós, Joaquim Pinheiro, Fernanda Silva, Telmo Carvalho, Rui Almeida, António Cabrita
PURPOSE: Hemodialysis (HD) is the main treatment modality in stage 5 chronic kidney disease, and vascular access planning is a crucial step in the path to dialysis treatment. Beyond detailed patient history and physical examination, duplex ultrasound (DU) evaluation is essential in preoperative vascular mapping. METHODS: A retrospective descriptive nonrandomized study was performed and included 108 end-stage kidney disease patients referred from eight HD centers to be assessed for creation of an arteriovenous (AV) access (AV fistula or AV graft)...
July 12, 2016: Journal of Vascular Access
https://www.readbyqxmd.com/read/27302448/decreased-incidence-of-clotted-av-access-in-hemodialysis-patients-after-the-implementation-of-follow-up-program
#13
Awad Magbri, Patricia McCartney, Eussera El-Magbri, Mariam El-Magbri, Taha El-Magbri
BACKGROUND & OBJECTIVES: Access monitoring and pre-emptive angioplasty is known to decrease the incidence of AVF/AVG thrombosis. The effect on increase the longevity and functionality of Arterial-Venous access (AV access) in end-stage renal disease (ESRD) patients is not settled. Thrombosis is the leading cause of vascular access complications and is almost always associated with the presence of stenosis. Percutaneous transluminal angioplasty (PTA) is an accepted treatment of stenotic lesions in AV access (NKF 2001)...
October 1, 2016: Global Journal of Health Science
https://www.readbyqxmd.com/read/26924326/effects-of-antiplatelet-medication-on-arteriovenous-fistula-patency-after-surgical-thrombectomy
#14
Chi-Hsiao Yeh, Ting-Shuo Huang, Yao-Chang Wang, Pin-Fu Huang, Tzu-Yen Huang, Tzu-Ping Chen, Shun-Ying Yin, Yu-Wei Yu
OBJECTIVES: To study the effect of antiplatelet agents on preventing arteriovenous (AV) fistulae thrombosis in hemodialysis (HD) patients after surgical thrombectomy (ST) for acute AV fistulae occlusion. Whether post-operative antiplatelet drugs have similar effects on the patency of AV fistula after surgical thrombectomy in patients with end-stage renal disease who undergo HD has not been investigated. DESIGN, MATERIALS AND METHODS: We employed the Taiwan National Health Insurance Research Database (NHIRD) from 1999 to 2010 to assess the recurrent occlusion requiring ST and longevity of AV fistula after ST in 1049 patients on regular HD, with or without antiplatelet drugs...
2016: Current Vascular Pharmacology
https://www.readbyqxmd.com/read/26847736/systematic-review-of-drug-eluting-balloon-angioplasty-for-arteriovenous-haemodialysis-access-stenosis
#15
REVIEW
Aurang Z Khawaja, Deirdre B Cassidy, Julien Al Shakarchi, Damian G McGrogan, Nicholas G Inston, Robert G Jones
BACKGROUND: Native or prosthetic arteriovenous (AV) fistulas are preferred for permanent haemodialysis (HD) access. These are marked with circuit steno-occlusive disease leading to dysfunction or even failure. Late failure rates have been reported as high as 50%. Standard angioplasty balloons are an established percutaneous intervention for HD access stenosis. Reported restenosis rates remain high and practice guidelines recommend a wide 6-month primary patency (PP) of at least 50% for any intervention...
March 2016: Journal of Vascular Access
https://www.readbyqxmd.com/read/26727368/nitric-oxide-resistance-reduces-arteriovenous-fistula-maturation-in-chronic-kidney-disease-in-rats
#16
Irma L Geenen, Felix F Kolk, Daniel G Molin, Allard Wagenaar, Mathijs G Compeer, Jan H Tordoir, Geert W Schurink, Jo G De Mey, Mark J Post
BACKGROUND: Autologous arteriovenous (AV) fistulas are the first choice for vascular access but have a high risk of non-maturation due to insufficient vessel adaptation, a process dependent on nitric oxide (NO)-signaling. Chronic kidney disease (CKD) is associated with oxidative stress that can disturb NO-signaling. Here, we evaluated the influence of CKD on AV fistula maturation and NO-signaling. METHODS: CKD was established in rats by a 5/6th nephrectomy and after 6 weeks, an AV fistula was created between the carotid artery and jugular vein, which was followed up at 3 weeks with ultrasound and flow assessments...
2016: PloS One
https://www.readbyqxmd.com/read/26524948/accessory-vein-obliteration-for-early-fistula-failure-a-myth-or-reality
#17
REVIEW
Naveed Ul Haq, Mohammed Mahdi Althaf, Timmy Lee
Early fistula failure (EFF) is a significant clinical problem causing lower rates of arteriovenous fistulae (AVFs) use in patients with ESRD on hemodialysis. The 2 main factors amenable to treatment and widely accepted to cause EFF are stenosis anywhere in the AVF circuit and/or presence of accessory vein (av). The role of stenotic lesions in causing EFF and their treatment options are relatively better defined with clear guidelines. On the other hand, assessing the significance of an av in causing EFF and the indications for its treatment seem to lack scientific recommendations based on robust clinical data...
November 2015: Advances in Chronic Kidney Disease
https://www.readbyqxmd.com/read/26386507/axial-splitting-of-the-medial-antebrachial-cutaneous-nerve-facilitates-second-stage-elevation-of-basilic-or-brachial-vein-in-patients-with-arteriovenous-fistula
#18
Stanislaw Przywara, Marek Ilzecki, Piotr Terlecki, Tomasz Zubilewicz
We describe a novel surgical technique to facilitate the second-stage elevation of the basilic or brachial vein in patients with first-stage brachial-basilic or autogenous brachial-brachial arteriovenous fistula by axial splitting of the medial antebrachial cutaneous nerve (MABCN). Filaments of the MABCN typically traverse the anterior aspect of the basilic and brachial veins. The second-stage elevation/shelf superficialization of the basilic or brachial vein, so as not to cause an injury to the MABCN, requires division of these veins with transposition over the nerve branches and subsequent reanastomosis...
November 2015: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/26372193/patients-started-on-hemodialysis-with-tunneled-dialysis-catheter-have-similar-survival-after-arteriovenous-fistula-and-arteriovenous-graft-creation
#19
Theodore H Yuo, Rabih A Chaer, Ellen D Dillavou, Steven A Leers, Michel S Makaroun
OBJECTIVE: Current guidelines suggest that arteriovenous fistula (AVF) is associated with survival advantage over arteriovenous graft (AVG). However, AVFs often require months to become functional, increasing tunneled dialysis catheter (TDC) use, which can erode the benefit of an AVF. We sought to compare survival in patients with end-stage renal disease after creation of an AVF or AVG in patients starting hemodialysis (HD) with a TDC and to identify patient populations that may benefit from preferential use of AVG over AVF...
December 2015: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/26370258/novel-use-of-the-nexfin%C3%A2-hd-monitor-for-real-time-physiological-assessment-of-blood-flow-during-creation-of-an-upper-extremity-arteriovenous-fistula
#20
LETTER
Christie Fitch, Rosie Earle, Andrew Sawka, Himat Vaghadia
No abstract text is available yet for this article.
December 2015: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
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