TP5.2.1 Duplex ultrasound should be interpreted with caution in vascular access

Abstract Aims Dysfunctional vascular access in haemodialysis has varied clinical presentations, including prolonged bleeding, pain, loss of thrill, difficulties needling and ineffective dialysis. We aimed to establish whether specific presentations correlate with a higher frequency adverse imaging findings intervention. Methods Duplex ultrasound scans (DUS) surgical AV fistulae grafts performed teaching hospital trust between 01/07/2019 31/01/2020 were analysed. Referral reasons, diagnostic findings, onward interventions salvage cross-referenced from electronic patient databases. Results 359 the period studied, which, 220 on men. Median age was 63 years (IQR 49-72). The most common referral reasons thrill difficulty (n = 46, both). 185/359 (52%) lead subtraction angiography 46/359 (13%) open time DUS 21 days 21% (39/185) did not match angiographic results. When assessing outcomes based presentation, 16/19 (85%, p < 0.01) patients who had high venous pressures dialysis 23/31 (74%, those recirculation required endovascular Pain correlated poorly future intervention (6/30). Conclusions A substantial proportion dysfunctional do angiography. for prior may delay Patients objective signs dysfunction (recirculation pressure) are highly likely need Such cases benefit proceeding directly on-table