In my opinion... your nurse cannot be lazy to do something that benefit you as patients. I am a nurse, and as far as I know... there are standard procedure of dialysis that must be followed by nurses when conducting dialysis, as well as if a patient's bood pressure is crash... the nurse should follow the algorithm. If you think the nurse didn't follow the standard, you may complain to their supervisor... you even can sue them if you sure they did mal-procedure.