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AVF for hemodialysis

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https://www.readbyqxmd.com/read/28430311/effect-of-hemodialysis-access-blood-flow-on-cardiac-events-after-coronary-artery-bypass-grafting-using-an-internal-thoracic-artery
#1
Leonid Feldman, Ilia Beberashvili, Ahmad Abu Tair, Shai Efrati, Oleg Gorelik, Walter G Wasser, Eitan Heldenberg, Igor Rabin
BACKGROUND: The possibility of coronary steal through an arteriovenous fistula (AVF) in hemodialysis (HD) patients with coronary artery bypass grafts (CABGs) using an ipsilateral internal thoracic artery (ITA) has been suggested. In order to define the significance of such a possibility, we analyzed cardiac events and mortality risk in patients in relation to AVF flow. METHODS: A retrospective cohort study was performed on prevalent HD patients from a single center...
April 14, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28430307/the-incidence-and-risk-factors-of-coronary-steal-after-ipsilateral-avf-in-patients-with-a-coronary-artery-bypass-graft
#2
Sanghyun Ahn, Ahram Han, Song-Yi Kim, Chanjoong Choi, Sang-Il Min, Jongwon Ha, Ho Young Hwang, Ki-Bong Kim, Seung-Kee Min
OBJECTIVE: Ipsilateral arteriovenous fistula (AVF) may cause symptoms of coronary steal in patients who had undergone coronary artery bypass graft (CABG) using internal thoracic artery. The purpose of this study was to evaluate the adverse effects of ipsilateral AVF to CABG, including the incidence of coronary steal, and to analyze the risk factors for coronary steal. METHODS: Between 2000 and 2013, a total of 25 patients undergoing hemodialysis via upper extremity AVF, ipsilateral to the preexisting CABG, were reviewed retrospectively...
April 14, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28415162/value-of-doppler-evaluation-of-physically-abnormal-fistula-hemodynamic-guidelines-and-access-outcomes
#3
Seong Cho, Yu-Ji Lee, Sung-Rok Kim
Background/Aims: The strategy of access care at out center involves the use of ultrasound (USG) in case of physical examination (PE) abnormality. USG determines the need of angiography. This study investigated the possible association between the need for percutaneous transluminal angioplasty (PTA) and hemodynamic parameters of USG. The study also assessed the effects of this monitoring strategy on outcomes in comparison with a historical control. Methods: A retrospective study of the medical records of 127 patients (65 PTA, 62 non-PTA) was conducted...
April 18, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28393400/sonography-of-arteriovenous-fistulas-and-grafts
#4
Jason A Pietryga, Mark D Little, Michelle L Robbin
Arteriovenous fistulas (AVFs) and arteriovenous grafts (AVGs) are the vascular accesses of choice for long-term hemodialysis. Strategies to establish and maintain functioning AVFs and AVGs are essential. In addition to clinical evaluation, ultrasound plays a critical role in the evaluation and maintenance of AVFs and AVGs. AVFs have a high rate of failure to mature which can be reliably diagnosed with ultrasound. Treatable etiologies of the failure to mature can often be diagnosed with ultrasound. Causes of secondary AVG failure can also be diagnosed with ultrasound and treated...
April 10, 2017: Seminars in Dialysis
https://www.readbyqxmd.com/read/28382736/vessel-mapping-for-dialysis-access-planning
#5
Vandana Dua Niyyar, Haimanot Wasse
The population of patients with end-stage renal disease (ESRD) in the United States is progressively increasing, with hemodialysis (HD) as the major mode of renal replacement therapy. National guidelines recommend increasing the use of arteriovenous fistulae (AVF) in both incident and prevalent hemodialysis patients. Pre-operative vascular mapping prior to the surgical creation of an AVF is now considered standard of care and may be helpful in achieving these goals. This manuscript focuses on the advantages and limitations of the various imaging techniques currently available for vessel mapping including physical examination, ultrasonography, angiography (iodinated contrast vs...
April 5, 2017: Seminars in Dialysis
https://www.readbyqxmd.com/read/28377908/the-usefulness-of-duplex-ultrasound-for-hemodialysis-access-selection
#6
Jeong Won Choi, Jin Hyun Joh, Ho-Chul Park
PURPOSE: A native vessel is preferable to an artificial graft for dialysis access. Duplex ultrasound (DUS) is noninvasive, cost-effective modality to evaluate the vessels for dialysis. The purpose of this study was to compare the rates of utilization of native vessels after preoperative imaging with DUS and contrast venography (CV). MATERIALS AND METHODS: A retrospective review was performed on patients who received an arteriovenous fistula (AVF) or arteriovenous graft (AVG) between June 2006 and July 2010...
March 2017: Vascular Specialist International
https://www.readbyqxmd.com/read/28362044/comparison-of-post-creation-procedures-and-costs-between-surgical-and-an-endovascular-approach-to-arteriovenous-fistula-creation
#7
Shuo Yang, Charmaine Lok, Renee Arnold, Dheeraj Rajan, Marc Glickman
INTRODUCTION: Due to early and late failures that may occur with surgically created hemodialysis arteriovenous fistulas (SAVF), post-creation procedures are commonly required to facilitate AVF maturation and maintain patency. This study compared AVF post-creation procedures and their associated costs in patients with SAVF to patients with a new endovascularly created AVF (endoAVF). METHODS: A 5% random sample from Medicare Standard Analytical Files was abstracted to determine post-creation procedures and associated costs for SAVF created from 2011 to 2013...
March 25, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28360226/dual-function-for-mature-vascular-smooth-muscle-cells-during-arteriovenous-fistula-remodeling
#8
Jinjing Zhao, Frances L Jourd'heuil, Min Xue, David Conti, Reynold I Lopez-Soler, Roman Ginnan, Arif Asif, Harold A Singer, David Jourd'heuil, Xiaochun Long
BACKGROUND: The arteriovenous fistula (AVF) is the preferred form of hemodialysis access for patients with chronic kidney disease. However, AVFs are associated with significant problems including high incidence of both early and late failures, usually attributed to inadequate venous arterialization and neointimal hyperplasia, respectively. Understanding the cellular basis of venous remodeling in the setting of AVF could provide targets for improving AVF patency rates. METHODS AND RESULTS: A novel vascular smooth muscle cell (VSMC) lineage tracing reporter mouse, Myh11-Cre/ERT2-mTmG, was used to track mature VSMCs in a clinically relevant AVF mouse model created by a jugular vein branch end to carotid artery side anastomosis...
March 30, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28359657/association-of-vitamin-d-metabolites-with-arterial-function-in-the-hemodialysis-fistula-maturation-study
#9
Adriana J van Ballegooijen, Leila Zelnick, Andrew N Hoofnagle, Naomi M Hamburg, Cassiane Robinson-Cohen, Prabir Roy-Chaudhury, Alfred K Cheung, Yan-Ting E Shiu, Ian H de Boer, Jonathan Himmelfarb, Gerald Beck, Peter B Imrey, John W Kusek, Bryan Kestenbaum
BACKGROUND: Disturbances in vitamin D metabolism are common in patients with end-stage renal disease and may contribute to vascular dysfunction. STUDY DESIGN: Cross-sectional. SETTING & PARTICIPANTS: We evaluated 558 of 602 participants at baseline of the Hemodialysis Fistula Maturation (HFM) Study, a 7-center prospective cohort study of a cohort of patients with chronic kidney disease awaiting arteriovenous fistula (AVF) creation surgery...
March 27, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28353491/nonprogrammed-vascular-access-is-associated-with-greater-mortality-in-patients-who-return-to-hemodialysis-with-a-failing-renal-graft
#10
Gustavo Laham, Gervasio Soler Pujol, Antonio Vilches, Ana Cusumano, Carlos Diaz
BACKGROUND: In incident hemodialysis (HD) patients the use of catheters is associated with a worse prognosis when compared to those with an arteriovenous fistula (AVF), but the role of vascular access (VA) type in the morbidity and mortality of patients returning to HD with a failing renal allograft is unknown. We aimed to determine the associations between the type of vascular access and mortality in this population. METHODS: This was a retrospective observational cohort study of 138 patients who initiated dialysis after kidney transplant failure between 1995 and 2014...
March 28, 2017: Transplantation
https://www.readbyqxmd.com/read/28352017/basilic-vein-transposition-a-viable-alternative-for-multiple-failed-arteriovenous-fistulas-a-single-center-experience
#11
Saurabh Sudhir Chipde, Santosh Agrawal, Jaisukh Kalathia, Udit Mishra, Rajeev Agrawal
Primary use of the autogenous arteriovenous access is recommended by the National Kidney Foundation-Dialysis Outcomes Quality Initiative guidelines. In spite of troublesome comorbidities associated with basilic vein transposition (BVT), it is still the most preferred technique when autologous veins are not suitable to construct radio-cephalic fistula (RCF) and brachiocephalic fistula (BCF), arteriovenous fistula (AVF). The present study highlights our experience with BVT, with small incision technique, over a period of two years with excellent outcome...
March 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28320412/high-resolution-hemodynamic-profiling-of-murine-arteriovenous-fistula-using-magnetic-resonance-imaging-and-computational-fluid-dynamics
#12
Daniel Pike, Yan-Ting Shiu, Maheshika Somarathna, Lingling Guo, Tatyana Isayeva, John Totenhagen, Timmy Lee
BACKGROUND: Arteriovenous fistula (AVF) maturation failure remains a major cause of morbidity and mortality in hemodialysis patients. The two major etiologies of AVF maturation failure are early neointimal hyperplasia development and persistent inadequate outward remodeling. Although hemodynamic changes following AVF creation may impact AVF remodeling and contribute to neointimal hyperplasia development and impaired outward remodeling, detailed AVF hemodynamics are not yet fully known...
March 20, 2017: Theoretical Biology & Medical Modelling
https://www.readbyqxmd.com/read/28297070/elbow-avf-configurations-and-indications
#13
Selcuk Baktiroglu, Fatih Yanar, Sercan Yuksel, Burak Celik, Halime G Kilic
INTRODUCTION: Brescia-Cimino radiocephalic arteriovenous fistula (AVF) remains the first-choice vascular access procedure for patients in need of long-term hemodialysis. The average life expectancy of patients receiving hemodialysis has increased in recent years and many patients now live longer and require secondary or tertiary procedures. Elbow fistulas should only rarely be constructed as primary fistulas. The aim of the surgeon must be not only to achieve a functioning fistula, but to avoid possible complications other than failure to mature (FTM), like distal ischemia and cardiac failure and to save the vessels as much as possible for future procedures...
March 6, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28297054/optimal-timing-for-vascular-access-creation
#14
Tamara K Jemcov, Wim Van Biesen
Many guidelines recommend that end-stage renal disease (ESRD) patients should have a permanent vascular access, preferably an autologous arteriovenous fistula (AVF), at the start of renal replacement therapy. Nevertheless, a large proportion of patients still start hemodialysis with a central venous catheter (CVC). On the other hand, there are increasing numbers of patients in whom an AVF has been created, but who never actually end up on dialysis, as well as a substantial number of patients in whom creation of a vascular access has been attempted unsuccessfully...
March 6, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28297050/preoperative-computer-simulation-for-planning-of-vascular-access-surgery-in-hemodialysis-patients
#15
Niek Zonnebeld, Wouter Huberts, Magda M van Loon, Tammo Delhaas, Jan H M Tordoir
INTRODUCTION: The arteriovenous fistula (AVF) is the preferred vascular access for hemodialysis patients. Unfortunately, 20-40% of all constructed AVFs fail to mature (FTM), and are therefore not usable for hemodialysis. AVF maturation importantly depends on postoperative blood volume flow. Predicting patient-specific immediate postoperative flow could therefore support surgical planning. A computational model predicting blood volume flow is available, but the effect of blood flow predictions on the clinical endpoint of maturation (at least 500 mL/min blood volume flow, diameter of the venous cannulation segment ≥4 mm) remains undetermined...
March 6, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28297048/upper-arm-hemodialysis-access-in-sweden
#16
Ulf Hedin, Gunilla Welander
AIM: To provide the contemporary use of upper-arm access for hemodialysis in Sweden using data from a unique national registry for hemodialysis access. METHODS: Data were retrieved from a nation-wide registry for dialysis access in Sweden, Dialysis Access Database (DiAD) on the use and function of specific access types with a focus on upper-arm accesses. RESULTS: The data demonstrate an increased use of upper-arm access, likely dependent on a changing patient population, with brachiocephalic arteriovenous fistula (AVF) as the most common access type...
March 6, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28297046/is-shear-stress-the-key-factor-for-avf-maturation
#17
Andrea Remuzzi, Michela Bozzetto, Paolo Brambilla
Autologous arteriovenous fistula (AVF) is the preferred choice for providing vascular access to hemodialysis (HD) patients, but it is still affected by high incidence of non-maturation or early failure. After creation, AVF must undergo vascular remodeling, a process characterized by an increase in blood vessel diameter and wall thickness, to allow efficient and adequate HD. A growing body of evidence indicates that AVF maturation is related to the response of endothelial cells (ECs) to changes in wall shear stress (WSS), and in particular, to changes of its peak value...
March 6, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28297045/surgical-technique-determines-the-outcome-of-the-brescia-cimino-avf
#18
Surendra Shenoy
Over the past 50 years, since Dr. Appel performed the first internal vascular access procedure for hemodialysis, the distal radiocephalic arteriovenous fistula continues to be the access of choice. Over time, failure to maturation has evolved as a major problem associated with this procedure depriving its benefits to many patients with end-stage renal disease. A variable incidence of this problem within similar patients suggests that surgical technique may play an important role in the development of non-maturation...
March 6, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28295984/safety-of-arteriovenous-fistulae-and-grafts-for-continuous-renal-replacement-therapy-the-michigan-experience
#19
Anas Al Rifai, Nidhi Sukul, Robert Wonnacott, Michael Heung
INTRODUCTION: Arteriovenous fistula or graft (AVF/AVG) use is widely considered contraindicated for continuous renal replacement therapy (CRRT), yet insertion of hemodialysis (HD) catheters can carry high complication risk in critically ill end-stage renal disease (ESRD) patients. METHODS: Single-center analysis of 48 consecutive hospitalized ESRD patients on maintenance HD who underwent CRRT using AVF/AVG from 2012 to 2013. Primary outcome was access-related complications...
March 13, 2017: Hemodialysis International
https://www.readbyqxmd.com/read/28289682/stent-grafts-can-convert-unusable-upper-arm-arteriovenous-fistulas-into-a-functioning-hemodialysis-access-a-retrospective-case-series
#20
Charudatta S Bavare, Tiffany K Street, Eric K Peden, Mark G Davies, Joseph J Naoum
INTRODUCTION: Not all newly created arteriovenous fistulas (AVFs) successfully mature and develop into a functioning access for hemodialysis. Percutaneous transluminal angioplasty (PTA) and balloon-assisted maturation (BAM) have been utilized to either treat flow-limiting stenoses or to promote and accelerate maturation. We hypothesized that unusable upper arm AVFs can be rescued by conversion to a functional access using the percutaneous placement of a stent graft (SG). METHODS: Clinical data on 12 patients with an early non-usable upper arm AVF underwent percutaneous revision using SGs...
2017: Frontiers in Surgery
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