scholarly journals TP5.2.4 Patency of radiocephalic versus brachiocephalic arteriovenous fistula in a major tertiary hospital

2021 ◽  
Vol 108 (Supplement_7) ◽  
Author(s):  
Fui Lin Wong ◽  
Ewan MacAulay ◽  
Keith Hussey
Keyword(s):  
Patient Selection ◽  
Tertiary Hospital ◽  
Primary Patency ◽  
Secondary Patency ◽  
Patient Demographics ◽  
Careful Patient ◽  
Surgical Expertise ◽  
Operative Ultrasound ◽  
Index Cases ◽  
Ultrasound Surveillance

Abstract Introduction The patency of brachiocephalic fistulae is generally considered to be superior to radiocephalic fistulae. We have explored this in a major tertiary hospital. Method This was a retrospective review of fistulae created between 1st January 2015 and 31st July 2020. Index cases were identified from a prospectively maintained vascular access database. Patient demographics, procedure details and subsequent interventions are described. Results There were 915 fistulae created on 813 patients (528 males and 285 females). There were 388 radiocephalic fistulae created on 374 patients and 363 brachiocephalic fistulae were formed on 301 patients. Both groups had 315 fistulae with patency data available. Age and a diagnosis of diabetes were comparable. There were significantly fewer female patients in the radiocephalic cohort (p = 0.004). Primary patency at 3 months, 1 year and 3 years were 84.6%, 58.1% and 37.9% for radiocephalic and 87.9%, 63.1% and 37.0% for brachiocephalic fistula (p = 0.273). Primary assisted patency at 3 months, 1 year and 3 years were 92.3%, 87.0%, 77.4% for radiocephalic and 96.1%, 88.6%, 79.9% for brachiocephalic fistulas (p = 0.295). Secondary patency at 3 months, 1 year and 3 years were 93.3%, 88.3% and 81.5% for radiocephalic fistulas and 97.4%, 90.6% and 85.7% for brachiocephalic fistulas (p = 0.134). Conclusion We have demonstrated similar primary, primary-assisted and secondary patency for radiocephalic and brachiocephalic fistulae. Pre-operative ultrasound vein mapping, selective ultrasound surveillance, surgical expertise and careful patient selection may contribute to the high secondary patency and absence of difference between the groups.

Outcomes of post-operative duplex ultrasound following arteriovenous fistula formation: A pragmatic single-centre experience

2019 ◽  
Vol 21 (5) ◽  
pp. 623-629
Author(s):  
Andrew TO Nickinson ◽  
Rebecca Rogers ◽  
Ahmed Elbasty ◽  
Ian Nunney ◽  
Philip C Bennett
Keyword(s):  
Confidence Interval ◽  
Arteriovenous Fistula ◽  
Duplex Ultrasound ◽  
Primary Patency ◽  
Hazard Ratio ◽  
Fistula Formation ◽  
Secondary Patency ◽  
Arteriovenous Fistulae ◽  
Standard Practice ◽  
Ultrasound Surveillance

Background: Duplex ultrasound surveillance with pre-emptive treatment of an identified stenosis is increasingly being utilised to help maintain arteriovenous fistula patency. This study aims to determine whether post-operative duplex ultrasound surveillance can improve fistula patency at 12 months and improve the proportion of ‘pre-haemodialysis’ patients commencing haemodialysis via a usable fistula. Methods: All arteriovenous fistulae formed between 1st January 2015 and 31st August 2017 in a single, tertiary vascular centre were included. Primary and secondary patency at 12 months, along with the proportion of pre-haemodialysis patients commencing haemodialysis via a usable arteriovenous fistula, were compared between the fistulae undergoing duplex ultrasound surveillance and ‘standard practice’. Results: Two hundred forty-one arteriovenous fistulae were created in 216 patients. A higher proportion of brachiobasilic transposition arteriovenous fistula and patients undergoing arteriovenous fistula creation following a previously failed access were identified in the duplex ultrasound surveillance group. Primary patency at 12 months (hazard ratio = 0.43, 95% confidence interval = 0.30–0.61, p < .001) was significantly lower in the duplex ultrasound surveillance group compared with the ‘standard practice’ group. Despite this, no difference was identified in secondary patency at 12 months (hazard ratio = 1.82, 95% confidence interval = 0.87–3.80, p = .112). No difference was also identified in the proportion of pre-haemodialysis patients starting haemodialysis with a usable arteriovenous fistula (duplex ultrasound surveillance = 65.0% vs standard practice = 77.8%; odds ratio = 0.53, 95% confidence interval 0.58–1.19, p = .279). Conclusion: Post-operative duplex ultrasound surveillance following arteriovenous fistula formation is associated with higher rates of post-operative intervention; however, this does not translate into improved secondary patency or the proportion of pre-haemodialysis patients commencing HD via their fistula.

Arteriovenous access does not perform as well for plasmapheresis

2017 ◽  
Vol 18 (2) ◽  
pp. 144-147
Author(s):  
Mathew Wooster ◽  
Rachel Wilson ◽  
Murray Shames ◽  
Neil Moudgill
Keyword(s):  
International Classification Of Diseases ◽  
Primary Patency ◽  
Secondary Patency ◽  
Patient Demographics ◽  
Surgical Access ◽  
Classification Of Diseases ◽  
Maturation Rate ◽  
Arteriovenous Access ◽  
Stiff Man Syndrome

Purpose Access surgeons are occasionally asked to create arteriovenous access for non-dialysis functions. Subjectively noting overall poor results, we seek to present our experience with arteriovenous access creation for apheresis. Methods Billing records were reviewed using Current Procedural Terminology (CPT) and International Classification of Diseases (ICD-9) codes to identify patients undergoing arteriovenous access creation for diseases other than renal failure from January 2007 to August 2014. Inpatient and outpatient records were reviewed to identify patient demographics, disease-specific medications/treatments, access-specific characteristics, patency data, and reinterventions required. Results A total of 16 access creation procedures were performed for 8 patients, accounting for just 1.6% of total access creations during the period. Treatment was for myasthenia gravis (n = 6), chronic inflammatory degenerative polyneuropathy (n = 9), and stiff man syndrome (n = 1). Access failure was by thrombosis (n = 7), non-maturation (n = 4), and infection/steal syndrome (n = 1), with four accesses still functional at conclusion of review. There was 50% autogenous access creation and overall maturation rate of 37.5%. Mean primary patency was 236 days (range 10-878), with secondary patency achieved in three patients adding a mean of 174 days (range 2-517). Cumulative 3-month and 1-year patency rates were 36.5% and 25%, respectively. Conclusions Arteriovenous access creation for plasmapheresis represents a minority of access procedures. Though it remains unclear why, patency and maturation rates are significantly lower than expected when compared to access for hemodialysis access. These high failure rates must be taken into account when considering replacement of temporary catheters with surgical access for non-hemodialysis needs.

Validation of the Guy’s scoring system in patient selection for femoro-distal bypass grafting to a single calf or pedal artery

Vascular ◽  
2015 ◽  
Vol 24 (3) ◽  
pp. 295-303
Author(s):  
Ali Kordzadeh ◽  
Alan Askari ◽  
Yiannis P Panayiotopoulos
Keyword(s):  
Patient Selection ◽  
Critical Limb Ischemia ◽  
Scoring System ◽  
Limb Ischemia ◽  
Primary Patency ◽  
Secondary Patency ◽  
Bypass Grafting ◽  
Graft Material ◽  
Significant Difference ◽  
Selection For

Objectives First external validation of a preoperative scoring system (Guy’s) in patient selection for femoro-distal bypass grafting to single calf or pedal artery in critical limb ischemia (Fontaine III & IV/Rutherford grade IV, V & VI). Material and methods A prospective study of 76 ( n = 76) consecutive femoro-crural/pedal bypass grafts on 72 individuals ( n = 72) from 2008 to 2011 with 36 months mean follow-up was performed. All cases were scored against a previously designed and published scoring system (ranging from 0 to 10) based on: inflow, outflow, graft material, flow type, patent pedal vessels and diabetes mellitus. Results Preoperative score of 0–4 ( n = 37) demonstrated the primary patency of 27% at 10.3 months. This value for intermediate group 5–7 ( n = 34) was 70.6% at 18.9 months. The high-score group 8–10 ( n = 4) showed the longest primary patency (80%) at 27.3 months. Kaplan–Meier survival analysis exhibited a consistent and significant difference in primary assisted, secondary patency and overall limb/foot salvage amongst all individual scoring groups ( p < 0.001). Conclusion This study validates and complements the Guy’s scoring system and provides a platform for the identification of critical limb ischemia patients in whom the result of femoro-crural/distal bypass grafting is so poor that primary amputation may be both clinically and economically more justified.

Common femoral artery endarterectomy in the age of endovascular therapy

Vascular ◽  
2018 ◽  
Vol 26 (6) ◽  
pp. 581-590 ◽  
Author(s):  
Mohamed Elsherif ◽  
Wael Tawfick ◽  
Mohamed Elsharkawi ◽  
Ruth Campell ◽  
Niamh Hynes ◽  
...  
Keyword(s):  
Femoral Artery ◽  
Clinical Success ◽  
Limb Ischemia ◽  
Common Femoral Artery ◽  
Arterial Disease ◽  
Primary Patency ◽  
Secondary Patency ◽  
Patient Demographics ◽  
Included Patient ◽  
Aneurysm Repair

Objectives Common femoral artery endarterectomy (CFE) is the standard treatment for common femoral artery occlusive disease. We aim to assess the medium term outcomes of CFE with or without further concomitant procedures. Design A retrospective observational study. Methods All patients who underwent either isolated CFE (ICFE), CFE with angioplasty for occlusive arterial disease (CFEA) or concomitant CFE with endovascular aortic aneurysm repair (CFEE) were included. Patient demographics follow up, clinical improvement, types of CFE closure, patency rates, and survival-free amputation were noted. Results From 2002 to 2015, 1512 patients were referred with a diagnosis of critical limb ischemia. Of those, 1134 required revascularization. Sixty-one patients underwent 66 CFE. Ten limbs underwent an ICFE, 35 had CFEA, and 21 underwent CFEE. Demographics were comparable in all groups. Twenty-seven were closed primarily, while 39 required patch closure (12 venous, 8 Dacron, 19 biological). Technical success was 100% in ICFEs, 94% in CFEA, and 100% for CFEE ( p = 0.274). Immediate clinical success was 100% in both CFE and CFEE, but was 85.7% in CFEA ( p = 0.035). Immediate hemodynamic success was similar in all three groups ( p = 0.73). Sustained hemodynamic success was 30% in ICFE, 54.3% in CFEA, and 23.8% in CFEE ( p = 0.056). At two years, the primary patency was 90% in ICFE, 74.3% in CFEA, and 100% in CFEE ( p = 0.049). Primary-assisted patency was 90% in ICFE, 82.9% in CFEA, and 100% in CFEE ( p = 0.17). Secondary patency was 90% in ICFE, 94.3% in CFEA, and 100% in CFEE ( p = 0.409). Re-intervention was required in 26.9% of primary closures, versus 12.8% with patch closures ( p = 0.279). Amputation-free survival was 100% in ICFE, 80% in CFEA, and 100% in CFEE ( p = 0.056). Conclusion CFE is a reliable and dependable procedure, even in the absence of good distal runoff.

The removal and morphology of intact biofilms from implanted venous access devices

1995 ◽  
Vol 53 ◽  
pp. 1020-1021
Author(s):  
M.A. Gregory ◽  
G.P. Hadley
Keyword(s):  
Patient Selection ◽  
Surgical Oncology ◽  
Venous Access ◽  
Common Procedure ◽  
Indwelling Catheters ◽  
Careful Patient ◽  
Novel Method ◽  
The Subject ◽  
Vascular Catheters ◽  
Venous Access Devices

The insertion of implanted venous access systems for children undergoing prolonged courses of chemotherapy has become a common procedure in pediatric surgical oncology. While not permanently implanted, the devices are expected to remain functional until cure of the primary disease is assured. Despite careful patient selection and standardised insertion and access techniques, some devices fail. The most commonly encountered problems are colonisation of the device with bacteria and catheter occlusion. Both of these difficulties relate to the development of a biofilm within the port and catheter. The morphology and evolution of biofilms in indwelling vascular catheters is the subject of ongoing investigation. To date, however, such investigations have been confined to the examination of fragments of biofilm scraped or sonicated from sections of catheter. This report describes a novel method for the extraction of intact biofilms from indwelling catheters.15 children with Wilm’s tumour and who had received venous implants were studied. Catheters were removed because of infection (n=6) or electively at the end of chemotherapy.

Endovascular stent-graft treatment for graft-vein anastomotic stenosis in haemodialysis patients with arteriovenous grafts

VASA ◽  
2015 ◽  
Vol 44 (6) ◽  
pp. 466-472 ◽  
Author(s):  
Chia-Hsun Lin ◽  
Yen-Yang Chen ◽  
Chai-Hock Chua ◽  
Ming-Jen Lu
Keyword(s):  
Risk Factors ◽  
Stent Graft ◽  
Target Lesion ◽  
Primary Patency ◽  
Anastomotic Stenosis ◽  
Secondary Patency ◽  
Endovascular Stent ◽  
Stent Grafts ◽  
Venous Anastomosis ◽  
Arteriovenous Grafts

Abstract. Background: In this study, we investigated the patency of endovascular stent grafts in haemodialysis patients with arteriovenous grafts, the modes of patency loss, and the risk factors for re-intervention. Patients and methods: Haemodialysis patients with graft-vein anastomotic stenosis of their arteriovenous grafts who were treated with endovascular stent-grafts between 2008 and 2013 were entered into this retrospective study. Primary and secondary patency, modes of patency loss, and risk factors for intervention were recorded. Results: Cumulative circuit primary patency rates decreased from 40.0 % at 6 months to 7.3 % at 24 months. Cumulative target lesion primary patency rates decreased from 72.1 % at 6 months to 22.0 % at 24 months. Cumulative secondary patency rates decreased from 81.3 % at 12 months to 31.6 % at 36 months. Patients with a history of cerebrovascular accident had a significantly higher risk of secondary patency loss, and graft puncture site stenosis jeopardised the results of stent-graft treatment. Conclusions: Our data can help to improve outcomes in haemodialysis patients treated with stent-grafts for venous anastomosis of an arteriovenous graft.

Forearm brachial artery to brachial vein looped arteriovenous grafts: A single center, single surgeon observational study

2021 ◽  
pp. 112972982110150
Author(s):  
Jeremy Liu ◽  
Josiah Situmeang ◽  
Devin Takahashi ◽  
Russell Harada
Keyword(s):  
Primary Patency ◽  
The Body ◽  
Secondary Patency ◽  
Close Monitoring ◽  
Arteriovenous Graft ◽  
Inclusion Criteria ◽  
Kaplan Meier ◽  
Brachial Vein ◽  
Arteriovenous Grafts

Background: Long-term hemodialysis (HD) treatment requires the establishment of a cannulatable vascular access (VA) point. While the arteriovenous fistula (AVF) is considered the gold standard, the arteriovenous graft (AVG) is a viable alternative especially in patients with poor superficial venous anatomy. Few studies have assessed the efficacy of the brachial-brachial arteriovenous graft (BB-AVG) for long-term HD access. By analyzing one surgeon’s experience in creating, surveilling and maintaining BB-AVGs, this retrospective study aims to add to the body of literature in assessing patency outcomes of BB-AVGs. Methods: We identified 57 BB-AVGs that met inclusion criteria and were created between October 6, 2005 and May 1, 2019 by a single surgeon in 54 patients. We analyzed primary failures, patency, complications and interventions. Patency rates were calculated by the Kaplan–Meier method. The incidence of complications and interventions were expressed as number of events per person-year. Results: A total of 54 patients (median age of 65 years) were analyzed. Primary patency rates at 12, 24, and 36 months were 20.4% 7.4%, and 5.0%. Primary assisted patency rates at 12, 24, and 36 months were 46.7%, 33.5%, and 15.1%. The secondary patency rates at 12, 24, and 36 months were 81.8%, 63.8%, and 60.1%, respectively. The incidence of complications and interventions was 2.164 per person-year. Most complications and interventions were due to stenosis (1.202 per person-year) or thrombosis (0.802 per person-year). Conclusion: In patients with poor superficial veins, the brachial vein is a reasonable alternative to use as the venous outflow. However, in order to achieve acceptable patency rates, close monitoring of the VA, as well as aggressive treatment of complications within the brachial vein is necessary. Overall, the BB-AVG should be considered in patients who lack adequate superficial veins and require preservation of the more proximal veins.

scholarly journals Factors associated with infrainguinal bypass graft patency at 1-year; a retrospective analysis of a single centre experience

Perfusion ◽  
2021 ◽  
pp. 026765912199576
Author(s):  
Pasha Normahani ◽  
Ismail Yusuf Anwar ◽  
Alona Courtney ◽  
Amish Acharya ◽  
Viknesh Sounderajah ◽  
...  
Keyword(s):  
Retrospective Analysis ◽  
Patency Rate ◽  
Bypass Graft ◽  
Graft Patency ◽  
Primary Patency ◽  
Rank Test ◽  
Secondary Patency ◽  
Factors Associated ◽  
Independent Variables ◽  
Secondary Patency Rate

Introduction: The aim of this study was to identify factors associated with primary graft patency 1 year following open lower limb revascularisation (LLR) at a tertiary referral vascular service. Methods: A retrospective analysis of patients undergoing infra-inguinal bypass surgery between January 2016 and May 2017 at a tertiary vascular centre (St Mary’s Hospital, London) was performed. Data regarding patient demographics, comorbidities, type of operation and post-operative anti-thrombotic strategy were collected. Quality of run-off score was assessed from pre-operative imaging. Results: Seventy-seven cases were included in the analysis. Overall, the primary patency rate at 1-year was 63.6% ( n = 49/77) and the secondary patency rate was 67.5% ( n = 52/77). Independent variables with statistically significant inferior patency rates at 1-year were (1) bypasses with below knee targets (p = 0.0096), (2) chronic limb threatening ischaemia indication (p = 0.038), (3) previous ipsilateral revascularisation (p < 0.001) and (4) absence of hypertension history (p = 0.041). There was also a trend towards significance for American Society of Anesthesiologists (ASA) grade (p = 0.06). Independent variables with log-rank test p values of <0.1 were included in a Cox proportional hazards model. The only variable with a statistically significant impact on primary patency rates was previous open or endovascular ipsilateral revascularisation (HR 2.44 (1.04–5.7), p = 0.04). Conclusion: At 1-year follow-up, previous ipsilateral revascularisation was the most significant factor in affecting patency rates. Patients in this subgroup should therefore be deemed high-risk, which should be reflected in the informed consent and peri-operative management.

The Upper-Arm Basilic-Cephalic Loop: A Valueable Alternative for Below-Knee Arterial Reconstruction

2021 ◽  
pp. 153857442098061
Author(s):  
Florian K. Enzmann ◽  
Peter Metzger ◽  
Julio Ellacuriaga San Martin ◽  
Werner Dabernig ◽  
Fatema Akhavan ◽  
...  
Keyword(s):  
Limb Salvage ◽  
Saphenous Vein ◽  
Bypass Graft ◽  
Primary Patency ◽  
Secondary Patency ◽  
Upper Arm ◽  
Autologous Vein ◽  
Tertiary Referral Center ◽  
Vein Grafts ◽  
First Choice

Introduction: Despite advances of endovascular interventions, bypass surgery remains the gold standard for treatment of long and complex arterial occlusions in the lower limb. Autologous vein is regarded superior to other options. As the graft of first choice, the great saphenous vein (GSV) is often not available due to previous bypass, stripping or poor quality. Other options like arm veins (AV) are important alternatives. As forearm portions of AVs are often unusable, a graft created from the upper arm basilic and cephalic veins provides a valuable alternative. Patients and Methods: We analyzed consecutive patients treated at an academic tertiary referral center between 01/1998 and 07/2018 using arm veins as the main peripheral bypass graft. Study endpoints were primary patency, secondary patency, limb salvage and survival. Results: In the observed time period 2702 bypass procedures were performed at our institution for below-knee arterial reconstructions. Vein grafts used included the ipsilateral GSV (iGSV; n = 1937/71.7%), contralateral GSV (cGSV; 192/7.1%), small saphenous vein (SSV; 133/4.9%), prosthetic conduits (61/2.3%) and different configurations of AV (379/14%). In the majority of patients receiving AV grafts a complete continuous cephalic or basilic vein (CAV) was used (n = 292/77%). If it was not possible to use major parts of these 2 veins, either spliced arm vein grafts (SAV) (42/11%) or an upper arm basilic-cephalic loop graft (45/12%) were used. Median follow-up was 27 (interquartile range: 8-50) months. After 3 years secondary patency (CAV: 85%; SAV: 62%; loop: 66%; p = 0.125) and limb salvage rates (CAV: 79%, SAV: 68%; loop: 79%; p = 0.346) were similar between the 3 bypass options. Conclusion: The encouraging results of alternative AV configurations highlight their value in case the basilic or cephalic veins are not useable in continuity. Especially for infragenual redo-bypass procedures, these techniques should be considered to offer patients durable revascularization options.

Omniflow II biosynthetic grafts versus expanded polytetrafluoroethylene grafts for infrainguinal bypass surgery. A single-center retrospective analysis

Vascular ◽  
2021 ◽  
pp. 170853812110298
Author(s):  
Bart CT van de Laar ◽  
Hugo C van Heusden ◽  
Pieternel CM Pasker-de Jong ◽  
Vincent van Weel
Keyword(s):  
Limb Salvage ◽  
Infection Rate ◽  
Bypass Surgery ◽  
Primary Patency ◽  
Knee Surgery ◽  
Secondary Patency ◽  
Single Center ◽  
Expanded Polytetrafluoroethylene ◽  
Infrainguinal Bypass ◽  
Omniflow Ii

Introduction: The aim of this study is to evaluate the outcome of Omniflow II biosynthetic vascular grafts as compared to synthetic expanded polytetrafluoroethylene (ePTFE) grafts in infrainguinal bypass surgery. Methods: A single-center, retrospective, observational study was performed reviewing patients with critical limb ischemia who underwent infrainguinal bypass surgery between 2014 and 2018. Patients characteristics, graft characteristics, and treatment outcomes were collected. Patency rates were compared using Kaplan–Meier estimates. Results: Sixty bypasses were performed in 57 patients. For above-knee surgery, six were Omniflow and 13 were synthetic. For below-knee surgery, 19 were Omniflow and 22 were synthetic. Patient characteristics between groups were similar. However, American Society of Anesthesiologists (ASA) classification scores were higher in the Omniflow group as compared to ePTFE (88% was ASA 3 or higher versus 60%; p = 0.018). Furthermore, wound, ischemia, and foot infection (WIfI) composite scores were higher in the Omniflow group ( p = 0.0001). There was a trend toward more active infection at time of surgery in the Omniflow group (40 vs 22.9%, p = 0.15). At 1 year, primary patency rates were 60.0% versus 46.9% for above-knee Omniflow versus ePTFE grafts, respectively ( p = 0.72). Secondary patency rates were 80.0% versus 82.5% ( p = 0.89), and limb salvage rates were 83.3% versus 100% ( p = 0.14). For below-knee surgery, 1- and 2-year primary patency rates in Omniflow versus ePTFE grafts were 36.0% versus 41.8% ( p = 0.60) and 36.0% versus 31.1% ( p = 0.87). Secondary patency rates were 66.8% versus 75.2% at 1 year ( p = 0.53) and 58.8% versus 48.3% ( p = 0.77) at 2 years. Below-knee limb salvage rates for Omniflow versus ePTFE after 2 years were 88.0% versus 68.3% ( p = 0.28), respectively. Aneurysmal degeneration occurred in 2/25 (8%) in the Omniflow group and 0/35 (0%) in the ePTFE group. Bypass infections occurred in 2/25 (8%) in the Omniflow group and 0/35 (0%) in the ePTFE group ( p = 0.09). Conclusion: Omniflow bypasses were more commonly implanted in patients with higher limb infection rate as confirmed with a higher adapted WIfI score. A trend toward a higher infection rate of Omniflow grafts was observed but not statistically significant. Graft infection rates were relatively low and treatable with antibiotics. No significant difference in graft performance was observed. The choice between the two studied grafts remains based on surgeon’s preference.

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