Just got the result from my August ZIO patch. I spoke to a NP at CPMC and she said it "looks clean!". I hadn't looked at it because it wasn't posted. After the call I looked it up and noted "first degree AV Block was present". I haven't seen this before on any of my zio's. I've actually been feeling pretty good lately and exercising more. Should I be concerned about this finding? My resting HR is still elevated, 80's & 90's.
Thanks,
Mike E

[www.hrsonline.org]

Mike:

I have a first degree heart block it was caused by my doctor prescribing Atenolol (beta blocker) when i first got AF. I did have to get a pacemaker because when i got an episode of AF when going back into NSR I would almost black out, this was caught in the Doctor's office, it showed that my heart rate fell to almost a flat line for a few seconds. That is when i got a Pacemaker implanted. I use my pacer about 1/3 of the time as my heart rate is good, usually around 64. i guess if you don't have any problems then the first degree heart block is just minor.

Flecanide also causes 1rst deg heart block.

McHale

Yes flecainide can cause heart block!, keep that in mind