There is pus discharge from the av graft fistula which was put for dialysis, it has been 6 months since the graft was put . No problem with flow , just the dialysis technician told us he has pus coming from there so they had to put the needle in new place . He told us to go see the doc who put the graft . Now we are confused ... Whether to go see the plastic surgeon who put the graft or to go see the vascular surgeon or go meet the nephrologist. Is this something very serious?