question for your experienced minds!!!! i recently started working in a small dialysis unit and i am still in training. we have a patient that is frail, weak and allergic to heparin. he very rarely finishes a treatment due to clotting the chambers and the inability to rinse back!! did i mention he was allergic to heparin!!! any tricks of the trade that i could use and pass along to my fellow nurses on the floor??? thanks a million!!!!