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AVF for hemodialysis

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https://www.readbyqxmd.com/read/28625819/outcomes-of-relocation-of-basilic-vein-in-brachiobasilic-fistulas-in-chronic-renal-failure
#1
Farzad Kakaei, Ahad Hasankhani, Mir-Salim Seyyed-Sadeghi, Peyman Virani, Tooraj Asvadi, Sina Zarrintan
BACKGROUND: In patients without or with injured cephalic vein, using the basilic vein for creating arteriovenous fistula (AVF) is the best way for hemodialysis. In order to create AVF, the basilic vein should be superficialized and lateralized. This study sought to examine outcome of relocation of basilic vein in brachiobasilic fistulas in patients with chronic renal failure (CRF). METHODS: We evaluated the outcome of creation of brachiobasilic fistula with transposition of basilic vein in 27 patients (14 males and 13 females with mean age of 60...
June 15, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28624422/endovascular-proximal-forearm-arteriovenous-fistula-for-hemodialysis-access-results-of-the-prospective-multicenter-novel-endovascular-access-trial-neat
#2
Charmaine E Lok, Dheeraj K Rajan, Jason Clement, Mercedeh Kiaii, Ravi Sidhu, Ken Thomson, George Buldo, Christine Dipchand, Louise Moist, Joanna Sasal
BACKGROUND: Hemodialysis arteriovenous fistulas (AVFs) are suboptimally used primarily due to problems with maturation, early thrombosis, and patient nonacceptance. An endovascular approach to fistula creation without open surgery offers another hemodialysis vascular access option. STUDY DESIGN: Prospective, single-arm, multicenter study (Novel Endovascular Access Trial [NEAT]). SETTINGS & PARTICIPANTS: Consecutive adult non-dialysis-dependent and dialysis-dependent patients referred for vascular access creation at 9 centers in Canada, Australia, and New Zealand...
June 9, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28599902/cost-effectiveness-analysis-of-vascular-access-referral-policies-in-ckd
#3
Steven M Shechter, Talon Chandler, M Reza Skandari, Nadia Zalunardo
BACKGROUND: The optimal timing of vascular access referral for patients with chronic kidney disease who may need hemodialysis (HD) is a pressing question in nephrology. Current referral policies have not been rigorously compared with respect to costs and benefits and do not consider patient-specific factors such as age. STUDY DESIGN: Monte Carlo simulation model. SETTING & POPULATION: Patients with chronic kidney disease, referred to a multidisciplinary kidney clinic in a universal health care system...
June 7, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28591486/computational-fluid-dynamic-analysis-of-the-hemodialysis-plastic-cannula
#4
David Fulker, Zakir Sayed, Anne Simmons, Tracie Barber
The jet of fluid returning to the patient through a hemodialysis venous needle has previously been reported as a potential source of endothelial damage which can lead to intimal hyperplasia (IH) in arteriovenous fistulae (AVF). Metal needles are the current standard practice for accessing the vascular system in hemodialysis. However, plastic cannulae have been used in Japan for 30 years. This study utilized computational fluid dynamics to analyze the hemodynamics of blood exiting a plastic cannula and determined the optimal placement and blood flow rate...
June 7, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28580561/-using-interdisciplinary-cooperation-to-improve-the-rate-of-proper-performance-of-a-hand-exercise-among-hemodialysis-patients-with-arteriovenous-fistula-construction
#5
Ya-Hsin Hsiao, Miao-Ling Shin, Cyong-Pei Huang, Siang-Jyun Chen, Tsuey-Yuan Huang
BACKGROUND & PROBLEMS: Patients who undergo new arteriovenous fistula (AVF) construction as part of their hemodialysis treatment program are required to perform hand exercises properly in order to maintain AVF function. However, poor performance of these hand exercises currently results in the failure of many patients to preserve AVF function. PURPOSE: To increase the rate of performing this hand exercise properly from 55% to 80%. RESOLUTION: A comprehensive investigation identified the following five main problems: (a) Insufficient muscular endurance; (b) Resistance was not labeled on the ball; (c) Difficulties with maintaining a grip on the ball during the exercise; (d) Lack of standardized education procedures; and (e) Nurses lack latest knowledge on the hand exercise...
June 2017: Hu Li za Zhi the Journal of Nursing
https://www.readbyqxmd.com/read/28574142/ultrasound-vector-flow-imaging-could-be-a-new-tool-in-evaluation-of-arteriovenous-fistulas-for-hemodialysis
#6
Ilaria Fiorina, Maria Vittoria Raciti, Alfredo Goddi, Vito Cantisani, Chandra Bortolotto, Shane Chu, Fabrizio Calliada
INTRODUCTION: We report the use of a new ultrasound technique to evaluate the axial and lateral components of a complex flow in the arteriovenous fistula (AVF). Vector Flow Imaging (VFI) allows to identify different components of the flow in every direction, even orthogonal to the flow streamline, represented by many single vectors. VFI could help to identify flow alterations in AVF, probably responsible for its malfunction. METHODS: From February to June 2016, 14 consecutive patients with upper-limb AVF were examined with a Resona 7 (Mindray, Shenzhen, China) ultrasound scanner equipped with VFI...
May 24, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28553035/brachiocephalic-arteriovenous-fistula-for-hemodialysis-through-the-median-antecubital-vein
#7
E Elamurugan, R Hemachandar
In patients unsuitable for radiocephalic fistula creation, the next option is brachiocephalic fistula. In such patients, we exploited the venous interconnections in the cubital fossa for median cubital vein-Brachiocephalic arteriovenous fistula (AVF) creation. In this article, we describe our experience in the creation of such technical variant of the brachiocephalic fistula AVF, its success and associated complications. A retrospective review of such AVF created between September 2014 and August 2015 was done...
May 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/28540993/administration-of-a-high-dose-erythropoietin-stimulating-agent-in-hemodialysis-patients-is-associated-with-late-arteriovenous-fistula-failure
#8
Hye Yun Jeong, Eun Jung Ko, Sang Hoon Kim, Mi Jung Lee, Hye Jeong Cho, Dong Ho Yang, So Young Lee
PURPOSE: Investigating the risk of vascular access failure is critical for maintenance hemodialysis (MHD) patients. Erythropoietin stimulating agents (ESA) typically used for anemia of chronic kidney disease (CKD) may also stimulate neointimal hyperplasia, which is the most important factor in late arteriovenous fistula (AVF) failure. The aim of this study was to investigate whether ESA treatment is associated with late AVF failure. MATERIALS AND METHODS: The late AVF failure group comprised 51 patients who underwent percutaneous intervention or surgery for fistula revision after successful use for at least three months...
July 2017: Yonsei Medical Journal
https://www.readbyqxmd.com/read/28534129/insomnia-muscular-cramps-and-pruritus-have-low-intensity-in-hemodialysis-patients-with-good-dialysis-efficiency-low-inflammation-and-arteriovenous-fistula
#9
Olga Hilda Orasan, Aniela Pop Saplontai, Angela Cozma, Simona Racasan, Ina Maria Kacso, Crina Claudia Rusu, Diana Moldovan, Dacian Tirinescu, Alina Potra, Ioan Mihai Patiu, Remus Aurel Orasan
INTRODUCTION: Insomnia, muscular cramps, pruritus and postdialysis recovery time (RT) are quality-of-life parameters that affect hemodialysis (HD) patients physically and mentally. METHODS: We included 171 end-stage renal disease patients: 115 on high-flux HD and 56 on online hemodiafiltration (HDF). Patients were asked "How long does it take you to recover from a dialysis session?" and they evaluated intensity (absent, mild, medium and severe) of insomnia, muscular cramps and pruritus in the past 4 weeks...
May 22, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28527110/a-review-of-the-hemodynamic-factors-believed-to-contribute-to-vascular-access-dysfunction
#10
Connor V Cunnane, Eoghan M Cunnane, Michael T Walsh
A vascular access (VA) is used to facilitate hemodialysis in patients that suffer from end-stage renal disease. However, they suffer from high failure rates due to non-maturation and venous stenosis, with intimal hyperplasia (IH) the underlying cause of both conditions. Abnormal hemodynamic profiles, which arise following VA creation, are believed to lead to the development of IH. However, the exact physiological response that initiates this process is unknown. This review evaluates the different hemodynamic parameters that are hypothesised to correlate with the development of IH...
May 19, 2017: Cardiovascular Engineering and Technology
https://www.readbyqxmd.com/read/28514785/effect-of-age-on-the-association-of-vascular-access-type-with-mortality-in-a-cohort-of-incident-end-stage-renal-disease-patients
#11
Tarek Saleh, Keiichi Sumida, Miklos Z Molnar, Praveen K Potukuchi, Fridtjof Thomas, Jun Ling Lu, Geeta G Gyamlani, Elani Streja, Kamyar Kalantar-Zadeh, Csaba P Kovesdy
BACKGROUND/AIMS: All hemodialysis (HD) patients are generally recommended to create a fistula first; but to create a mature arteriovenous fistula (AVF) can be challenging in elderly individuals. It is unclear if elderly incident HD patients derive a survival benefit from an AVF over an arteriovenous graft (AVG) or a tunneled central venous catheter (TDC). METHODS: We examined the association of vascular access type (AVF, AVG, and TDC with and without a maturing AVF/AVG at dialysis transition) at HD initiation with all-cause, cardiovascular (CV), and infection-related mortality in 46,786 US veterans using Cox models with adjustment for confounders...
May 18, 2017: Nephron
https://www.readbyqxmd.com/read/28498647/association-between-staphylococcus-aureus-bacteremia-and-hospital-mortality-in-hemodialysis-patients-with-bloodstream-infection-a-multicenter-cohort-from-japanese-tertiary-care-centers
#12
Takahiro Imaizumi, Takeshi Hasegawa, Atsushi Nomura, Sho Sasaki, Hiroki Nishiwaki, Takaya Ozeki, Hideaki Shimizu, Shun Minatoguchi, Taishi Yamakawa, Masahiko Yazawa, Daisuke Uchida, Hiroo Kawarazaki, Masahito Miyamoto, Tomo Suzuki, Ken'ichiro Koitabashi, Masahide Furusho, Yoshiro Fujita
Multiple studies have shown that Staphylococcus aureus bacteremia (SAB) has been a major cause of death in hemodialysis patients. We examined whether SAB is a risk for mortality among chronic hemodialysis patients in Japan where the standard vascular access is arteriovenous fistula (AVF). This was a multicenter, retrospective study of maintenance hemodialysis patients with bloodstream infection (BSI) from 2011 to 2013 at tertiary care centers in Japan. The endpoint was hospital mortality. Our cohort contained 32 SAB cases (14 MRSA and 18 MSSA) and 42 non-SAB cases...
May 12, 2017: Therapeutic Apheresis and Dialysis
https://www.readbyqxmd.com/read/28480823/clinical-course-of-hemodialysis-access-after-initial-endovascular-intervention-for-stenosis-in-asian-renal-failure-patients
#13
Dewahar Senthoor, Kyi Zin Thant, Tze-Kiat Ng, Pei Ho
BACKGROUND: Arteriovenous fistula (AVF) and arteriovenous fistula graft (AVG) access for hemodialysis can develop stenosis, eventually leading to thrombosis and access failure. Prompt endovascular intervention can salvage the access but restenosis does occur. Clinical course, restenosis pattern, and risk factors associated with initial stenosis of AVFs/AVGs in Asian hemodialysis patients were studied. METHOD: A retrospective study was conducted (January 2009-June 2012) on consecutive patients with renal failure who developed the first-time stenosis in the vascular access and were managed with endovascular intervention...
January 1, 2017: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28450292/cd44-promotes-inflammation-and-extracellular-matrix-production-during-arteriovenous-fistula-maturation
#14
Go Kuwahara, Takuya Hashimoto, Masayuki Tsuneki, Kota Yamamoto, Roland Assi, Trenton R Foster, Jesse J Hanisch, Hualong Bai, Haidi Hu, Clinton D Protack, Michael R Hall, John S Schardt, Steven M Jay, Joseph A Madri, Shohta Kodama, Alan Dardik
OBJECTIVE: Arteriovenous fistulae (AVF) remain the optimal conduit for hemodialysis access but continue to demonstrate poor patency and poor rates of maturation. We hypothesized that CD44, a widely expressed cellular adhesion molecule that serves as a major receptor for extracellular matrix components, promotes wall thickening and extracellular matrix deposition during AVF maturation. APPROACH AND RESULTS: AVF were created via needle puncture in wild-type C57BL/6J and CD44 knockout mice...
June 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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