Hi All. I am having a little difficulty trying to do some basic exercise. I have a Medtronic dual chamber placed 7 yrs ago. Recently I was having difficulty just walking to take the garbage out where I would have to stop and rest due to being winded quickly. I thought this was just from needing to exercise more so I joined the gym but continued to get sob easily with an sort of exercise. At my next interrogation visit the new cardiologist noted I was so sob just walking to the room. The reading was that I was havising about 8990 episodes of rate drop responses and multiple episodes of rapid heart rates. The rep was called and adjusted something but I still feel terrible. I was wondering if it's possible to lower the low rate to 50 instead of 60. I also take Metropolol for the fast heart rate. Sorry for the long post, just trying to explain. Thanks for your help.