I have a patient who has numbness in the feet and bottom half of legs. I am treating him with liver blood def points. I was taught the best way to treat this is to find the area where it begins to go numb and surround the leg with needles and use electric stimulation. However this patient has a pacemaker. Do you think it would be okay to use the estim even though he has a pacemaker and if not do you have any other suggestions to treat the numbness?