. .i Had To Stop My Dialysis Treatment Today,30 Minutes

. .i had to stop my dialysis treatment today,30 minutes short because my Bp was 257/117,just how dangerous is that? Being a type 1 Diabetic since 1977 at age 7,I just about have every diabetes complications. I went very ill at age 38,and now have complete Good Dr's care,but never ever a Bp that high. After all day it reads 288/88. Can you suggest anything right now? I'm on Clonodine,Procardia,and Hydralizine