I totally agree ronbyrd, you are the first to connect with similar symptoms! Congrats on the Boston Marathon qualifying time…that's AWESOME! 🙂 By complete heart block, I mean a third-degree heart block…it is when electrical signals do not travel between the upper Atrial and lower Ventricle chambers of the heart. My cardiologist sent me to straight to the ER from his office visit…on Valentines Day, no less. While I awaited the lyme disease results over the long holiday weekend, my heart rate dipped to low of 27 in ICU. And they could not get it higher than 38. When I had the pacemaker installed, I felt immediate relief. First 3 months, I have had a lot of transition, but now running 3-4 miles a day, 5 times a week, and no PSVTs.