RT Journal Article SR Electronic T1 Anaesthesia Choice for Creation of Arteriovenous Fistula (ACCess) study protocol : a randomised controlled trial comparing primary unassisted patency at 1 year of primary arteriovenous fistulae created under regional compared to local anaesthesia JF BMJ Open JO BMJ Open FD British Medical Journal Publishing Group SP e052188 DO 10.1136/bmjopen-2021-052188 VO 11 IS 12 A1 Alan JR Macfarlane A1 Rachel J Kearns A1 Marc James Clancy A1 David Kingsmore A1 Karen Stevenson A1 Andrew Jackson A1 Patrick Mark A1 Margaret Aitken A1 Ramani Moonesinghe A1 Cecilia Vindrola-Padros A1 Lucian Gaianu A1 Gavin Pettigrew A1 Reza Motallebzadeh A1 Nikolaos Karydis A1 Alex Vesey A1 Rita Singh A1 Thalakunte Muniraju A1 Stuart Suttie A1 Alex McConnachie A1 Kirsty Wetherall A1 Kariem El-Boghdadly A1 Rosemary Hogg A1 Iain Thomson A1 Vishal Nangalia A1 Emma Aitken A1 , YR 2021 UL http://bmjopen.bmj.com/content/11/12/e052188.abstract AB Introduction Arteriovenous fistulae (AVF) are the ‘gold standard’ vascular access for haemodialysis. Universal usage is limited, however, by a high early failure rate. Several small, single-centre studies have demonstrated better early patency rates for AVF created under regional anaesthesia (RA) compared with local anaesthesia (LA). The mechanistic hypothesis is that the sympathetic blockade associated with RA causes vasodilatation and increased blood flow through the new AVF. Despite this, considerable variation in practice exists in the UK. A high-quality, adequately powered, multicentre randomised controlled trial (RCT) is required to definitively inform practice.Methods and analysis The Anaesthesia Choice for Creation of Arteriovenous Fistula (ACCess) study is a multicentre, observer-blinded RCT comparing primary radiocephalic/brachiocephalic AVF created under regional versus LA. The primary outcome is primary unassisted AVF patency at 1 year. Access-specific (eg, stenosis/thrombosis), patient-specific (including health-related quality of life) and safety secondary outcomes will be evaluated. Health economic analysis will also be undertaken.Ethics and dissemination The ACCess study has been approved by the West of Scotland Research and ethics committee number 3 (20/WS/0178). Results will be published in open-access peer-reviewed journals within 12 months of completion of the trial. We will also present our findings at key national and international renal and anaesthetic meetings, and support dissemination of trial outcomes via renal patient groups.Trial registration number ISRCTN14153938.Sponsor NHS Greater Glasgow and Clyde GN19RE456, Protocol V.1.3 (8 May 2021), REC/IRAS ID: 290482.