Although I've had CRPS for 4 yrs and read everything I can -other people here would probably know better than me if your B/P could be CRPS related -but as a practicing nurse of 33 yrs, I would say that you shouldn't shrug off your B/P in that range -especially if you are on 4 pills for it. If you have a cardiac history and elevated B/P, and your meds aren't effective, your doc really needs to do some fine tuning. You don't need any further health problems getting worse on you.
I know that I'm guilty of not going to the doctor about non-CRPS problems, because I am soooo tired of seeing doctors - and maybe you feel that way too - but elevated B/P is like a silent ticking bomb, with serious consequences.
Please make your doctor address it and get it in a safer range so your body is a little healthier to battle your CRPS.