My mom is under dialysis thrice a week. most of the times her hp is on d higher side. Frm last 7 months her bp is vry unstable..somtimes it is 190/100 and somtimes it is 90/60.v r havin mdecines for high bp bt she eats accordin 2 d pressure..is der ny blood monitor machine digital where she can check her own also i hav searched online der r som bt it does not shows high bp..is tht true??.pls if der is ny good digital bp monitor machine let me knw so tht she can check her own regularly...as soon as response is appreciated