Pulse rate during exercise

Prior to my implant it would take a prolonged period of jogging for my heart rate to get to 135 bpm. I had my implant 7 weeks ago and apparently my CRT is set to active, but my heart rate gets to my cut off rate of 145 in literally minutes.

Did I get that much out of shape in 8 weeks? Could this be a programming issue? My Doctor tells me my pulse is reacting on its own to the exercise, but this does not feel right.

I would appreciate any insight anyone may have.




by BarbD - 2019-04-10 15:56:50

What do you mean by "my cut off rate of 145"?


by Tracey_E - 2019-04-10 17:42:52

Yes it's easy to get out of shape in 8 weeks. Yes it can be programming. If it's set to active it's going to jump up quickly. However, they can tell if you are pacing or not when you go up. If they say it's all you, then it's all you. Do you have av block? If so, your rate was always trying to get that high. With av block, the atria beats normally but the signal isn't getting to the ventricles so our pulse is artifically low. When we are first paced and have a normal rate again with the ventricles beating when the atria does, it seems high but it's actually what it should have been all along if we didn't have av block. 



by cnikkih - 2019-04-12 16:38:24

Same thing happened to me, and I have come to realize it's exactly what Tracey_E described. As for the 145 limit, I am using the advice of another user here that I just talked to today, and will be asking to have my limit raised from 145 to at least 160, but I'd love to be at 180 like she is. I want to be able to run again! Right now, I can't do more than a VERY slow jog and it's frustrating. 

Could be p waves

by Pacedmyruns - 2019-04-15 04:28:29

i had the issue in the beginning after implant. I have a lot of p waves and noise when running. The tech programmed to ignore them and only pay attention to real p waves. That helped. My max is 185. 

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