oK THANKS , my question is how quickly does stage 3, go to stage 4 kidney disease. I have a 3 lead pacemaker the 3rd lead is refered as a LVL utilized for CHFof the left ventrical. not sure but since it was warranted, it must have been significant . I have asthma I am on Quvar daily and provental. I know my specialists do not recommend me research the web, but i do get antsie. i will be recieving my sixth surgery for my pacemaker within the next 4 months or sooner. So there you have it , the run down before you answer my question. Please dont misunderstand I do have the best specialist available.