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arteriovenous graft

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https://www.readbyqxmd.com/read/28647193/cryopreserved-venous-allograft-is-an-acceptable-conduit-in-patients-with-current-or-prior-angioaccess-graft-infection
#1
Michael P Harlander-Locke, Peter F Lawrence, Aamna Ali, Esther Bae, James Kohn, Christopher Abularrage, Michael Ricci, Gary W Lemmon, Sotero Peralta, Jeffrey Hsu
OBJECTIVE: The durability of cryopreserved allograft has been previously demonstrated in the setting of infection. The objective of this study was to examine the safety, efficacy, patency, and cost per day of graft patency associated with using cryopreserved allograft (vein and artery) for hemodialysis access in patients with no autogenous tissue for native fistula creation and with arteriovenous graft infection or in patients at high risk for infection. METHODS: Patients implanted with cryopreserved allograft for hemodialysis access between January 2004 and January 2014 were reviewed using a standardized, multi-institutional database that evaluated demographic, comorbidity, procedural, and outcomes data...
June 21, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28633210/value-of-surgery-for-infective-endocarditis-in-dialysis-patients
#2
Sajjad Raza, Syed T Hussain, Jeevanantham Rajeswaran, Asif Ansari, Matteo Trezzi, Amr Arafat, James Witten, Kirthi Ravichandren, Haris Riaz, Hoda Javadikasgari, Sunil Panwar, Sevag Demirjian, Nabin K Shrestha, Thomas G Fraser, José L Navia, Bruce W Lytle, Eugene H Blackstone, Gösta B Pettersson
OBJECTIVES: To determine the value of surgery for infective endocarditis (IE) in patients on hemodialysis by comparing the nature and invasiveness of endocarditis in hemodialysis and nonhemodialysis patients and their hospital and long-term outcomes, and identifying risk factors for time-related mortality after surgery. METHODS: From January 1997 to January 2013, 144 patients on chronic hemodialysis and 1233 nonhemodialysis patients underwent valve surgery for IE at our institution...
July 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28619645/introduction-of-arteriovenous-grafts-with-graft-insertion-anastomosis-for-hemodialysis-access
#3
Takuya Hatakeyama, Hiroyuki Okamoto, Tatsu Nakazawa, Tatsuya Nonaka, Sei Sasaki, Masanobu Hoshino
OBJECTIVE: An arteriovenous bridging graft is a viable option for patients with compromised arteries or veins because of advanced age or diabetes. Arteriovenous graft with graft insertion anastomosis (AVGI) is the novel technique for graft-vein anastomosis where the prosthesis is inserted into the vein, and the anastomosis is performed on the surface of the prosthesis. This study assessed the short-term and long-term results of AVGI to clarify the efficacy of this technique. METHODS: Between 2010 and 2015, AVGI was performed in graft-vein anastomosis of prosthetic forearm loop access...
June 12, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28604986/reduction-of-lung-congestion-following-arteriovenous-fistula-flow-reduction-in-renal-graft-recipient
#4
Krzysztof Letachowicz, Oktawia Mazanowska, Maria Boratyńska, Marta Obremska, Anna Goździk, Mariusz Kusztal, Magdalena Krajewska, Tomasz Gołębiowski, Marian Klinger
No abstract text is available yet for this article.
June 6, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28599902/cost-effectiveness-analysis-of-vascular-access-referral-policies-in-ckd
#5
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/28593158/fontan-revision-with-y-graft-in-a-patient-with-unilateral-pulmonary-arteriovenous-malformation
#6
Jeong-Woo Lee, Jeong-Jun Park, Hyun Woo Goo, Jae Kon Ko
The extracardiac conduit Fontan procedure is the last surgical step in the treatment of patients with a functional single ventricle. An acquired pulmonary arteriovenous malformation may appear perioperatively or postoperatively due to an uneven hepatic flow distribution. Here we report a case of a bifurcated Y-graft Fontan operation in a 15-year-old male patient with a unilateral pulmonary arteriovenous malformation after an extracardiac conduit Fontan operation.
June 2017: Korean Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28590946/hospitalization-among-individuals-waitlisted-for-kidney-transplant
#7
Kira L Newman, Raymond J Lynch, Andrew B Adams, Rebecca Zhang, Stephen O Pastan, Rachel E Patzer
BACKGROUND: For patients waitlisted for a deceased-donor kidney, hospitalization is associated with a lower likelihood of transplantation and worse posttransplant outcomes. However, individual-, neighborhood-, and regional-level risk factors for hospitalization throughout the waitlist period and specific causes of hospitalization in this population are unknown. METHODS: We used United States Renal Data System Medicare-linked data on patients waitlisted between 2005 and 2013 with continuous enrollment in Medicare Parts A & B (n=53 810) to examine the association between annual hospitalization rate and a variety of demographic, clinical, and social factors...
June 6, 2017: Transplantation
https://www.readbyqxmd.com/read/28579291/successful-use-of-partial-aneurysmectomy-and-repair-approach-for-managing-complications-of-arteriovenous-fistulas-and-grafts
#8
Shouwen Wang, Michele S Wang
OBJECTIVE: Arteriovenous fistulas and grafts may often be associated with localized complications related to aneurysms/pseudoaneurysms, buttonholes, or structural defects that require proper management to ensure continued access functionality for hemodialysis. Partial aneurysmectomy and repair (PAR) is a targeted surgical approach specifically designed for managing these complications. The basic concepts of PAR include resecting unhealthy or excessive tissue over an access, reconstructing the vascular access lumen using in situ vascular wall or tissue when possible, and closing overlying skin with healthy margins to promote reliable healing...
May 31, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28578897/inadvertent-anastomosis-of-the-left-internal-mammary-artery-to-the-great-cardiac-vein
#9
Shahryar G Saba, John N Makaryus, Shoshanah Kahn, Rakesh Shah, Perwaiz Meraj
We present an uncommon and underreported complication of coronary artery bypass graft surgery: erroneous anastomosis of the left internal mammary artery to the great cardiac vein. The iatrogenic aorto-coronary arteriovenous fistula with left-to-right shunting resulted in dilation of the coronary sinus, a supporting secondary finding. Factors predisposing to this inadvertent anastomosis include an intramyocardial segment of the left anterior descending coronary artery, demonstrated in this case, as well as epicardial fat and potentially fibrosis of the underlying myocardium...
May 19, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28576453/epidemiology-of-infections-and-antimicrobial-use-in-australian-haemodialysis-outpatients-findings-from-a-victorian-surveillance-network-2008-2015
#10
Leon J Worth, Tim Spelman, Steven G Holt, Judith A Brett, Ann L Bull, Michael J Richards
BACKGROUND: Patients with chronic renal failure who require haemodialysis are at high risk for infections. The objectives of this study were to determine the burden of bloodstream and local access-related infections and prescribing patterns for intravenous antibiotics in Australian haemodialysis outpatients. METHODS: A surveillance network was established following stakeholder consultation, with voluntary participation by haemodialysis centres and data collation by the Victorian Healthcare Associated Infection Surveillance System Coordinating Centre...
May 30, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28574037/-diagnostic-significance-of-the-color-duplex-scanning-in-estimation-of-the-arteries-state-at-different-stages-of-infrainguinal-reconstructions
#11
I E Timina, I I Piatkova, A E Zotikov, Z A Adyrkhaev
AIM: The study was aimed at assessing diagnostic possibilities of duplex scanning (DS) of lower limb arteries, used as 'ultrasonographic angiography' in patients presenting with critical ischaemia for appropriately planning complicated infrainguinal reconstructions at stages of surgical management, including dynamic follow up in the postoperative period. PATIENTS AND METHODS: We examined a total of 30 patients. Of these, 14 patients composed the control group and 16 patients with critical ischaemia of lower limb arteries who underwent 8 external iliac-tibial and 8 femorotibial bypass graftings with a relieving arteriovenous fistula and application of a venous cuff according to the type of 'St...
2017: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
https://www.readbyqxmd.com/read/28567356/radial-artery-occlusion-after-transradial-coronary-catheterization
#12
REVIEW
Grigorios Avdikos, Aris Karatasakis, Andreas Tsoumeleas, Efstathios Lazaris, Antonios Ziakas, Michael Koutouzis
The transradial approach (TRA) for coronary angiography and interventions is increasingly utilized around the world. Radial artery occlusion (RAO) is the most common significant complication after transradial catheterization, with incidence varying between 1% and 10%. Although RAO is rarely accompanied by hand ischemia, it is an important complication because it prohibits future transradial access and radial artery utilization as a conduit for coronary artery bypass grafting or arteriovenous fistula formation...
June 2017: Cardiovascular Diagnosis and Therapy
https://www.readbyqxmd.com/read/28566510/gradual-loading-ameliorates-maladaptation-in-computational-simulations-of-vein-graft-growth-and-remodelling
#13
Abhay B Ramachandra, Jay D Humphrey, Alison L Marsden
Vein graft failure is a prevalent problem in vascular surgeries, including bypass grafting and arteriovenous fistula procedures in which veins are subjected to severe changes in pressure and flow. Animal and clinical studies provide significant insight, but understanding the complex underlying coupled mechanisms can be advanced using computational models. Towards this end, we propose a new model of venous growth and remodelling (G&R) based on a constrained mixture theory. First, we identify constitutive relations and parameters that enable venous adaptations to moderate perturbations in haemodynamics...
May 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28553040/prosthetic-hemodialysis-access-induced-distal-hand-ischemia-and-its-contributors-in-diabetics
#14
S M Alamshah, I Nazari, A Nahidi, M Sametzadeh, S Khodabakhshi
Avoidance of hand ischemia in the construction of prosthetic access for hemodialysis in diabetics that have no suitable vein for arteriovenous fistula is appreciated. Taper type may be an appropriately matched conduit to prevent its occurrence. This is a prospective controlled trial of 38 selected diabetics requiring hemodialysis, who were referred to our clinic during a period of 6 months. The aim of the study was to evaluate the efficacy of tapered grafts in preventing distal hand hypoperfusion and determining its most likely contributors...
May 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/28553035/brachiocephalic-arteriovenous-fistula-for-hemodialysis-through-the-median-antecubital-vein
#15
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/28527110/a-review-of-the-hemodynamic-factors-believed-to-contribute-to-vascular-access-dysfunction
#16
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/28522655/choice-of-hemodialysis-access-in-older-adults-a-cost-effectiveness-analysis
#17
Rasheeda K Hall, Evan R Myers, Sylvia E Rosas, Ann M O'Hare, Cathleen S Colón-Emeric
BACKGROUND AND OBJECTIVES: Although arteriovenous fistulas have been found to be the most cost-effective form of hemodialysis access, the relative benefits of placing an arteriovenous fistula versus an arteriovenous graft seem to be least certain for older adults and when placed preemptively. However, older adults' life expectancy is heterogeneous, and most patients do not undergo permanent access creation until after dialysis initiation. We evaluated cost-effectiveness of arteriovenous fistula placement after dialysis initiation in older adults as a function of age and life expectancy...
June 7, 2017: Clinical Journal of the American Society of Nephrology: CJASN
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
#18
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/28514783/dialysis-access-as-an-area-of-improvement-in-elderly-incident-hemodialysis-patients-results-from-a-cohort-study-from-the-international-monitoring-dialysis-outcomes-initiative
#19
Jochen G Raimann, Claudia Barth, Len A Usvyat, Priscila Preciado, Bernard Canaud, Michael Etter, Xiaoqi Xu, Adrian Guinsburg, Christina Marelli, Neill Duncan, Albert Power, Frank M van der Sande, Jeroen P Kooman, Stephan Thijssen, Yuedong Wang, Peter Kotanko
BACKGROUND: Commencing hemodialysis (HD) using a catheter is associated with a higher risk of adverse outcomes, and early conversion from central-venous catheter (CVC) to arteriovenous fistula/graft (non-CVC) improves outcomes. We investigated CVC prevalence and conversion, and their effects on outcomes during the first year of HD in a multinational cohort of elderly patients. METHODS: Patients ≥70 years from the MONDO Initiative who commenced HD between 2000 and 2010 in Asia-Pacific, Europe, North-, and South-America and survived at least 6 months were included in this investigation...
2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/28507855/composite-arteriovenous-radial-conduit-flap-for-lower-limb-reconstruction
#20
Pedro C Cavadas, Burak Sercan Ercin, Alessandro Thione
In complex lower limb trauma, the healthy recipient vessels can be far from the defect to be reconstructed due to the usually high-energy injury sustained. The use of vein grafts, either directly or in the form of arteriovenous loops, is the usual solution in these cases. In the vein graft donor-depleted patient, other options are required; the composite arteriovenous radial conduit flap may be a useful resort in these situations.
April 2017: Plastic and Reconstructive Surgery. Global Open
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