Abstract Introduction At our trust patients with nitrite positive urinalysis attending for flexible cystoscopy (FC) are rescheduled, placing a heavy burden on over stretched NHS resources. It is accepted that asymptomatic bacteriuria (AB) affects up to 20% of 70. Catheters, stents, and recent antibiotics urinary tract infection also significantly increases this risk. Recent evidence suggests pr...

We investigate the impossibility of solving certain problems in an unreliable distributed system where multiple processes may fail. A necessary condition is provided for the solvability of problems in the presence of multiple faulty processes, and variants of problems which are unsolvable in the presence of a single faulty pro~~s (such as consensu.s, ehoo~ing a leader, r~g, matching) are shown ...