I forgot to mention that since the ablations I have a shortened pr interval-- which might be why I fainted and is another reason for the stress echo. To possibly unmask an accessory pathway.
What is your pr interval now? Ablations for IST have a high risk of needing a pacemaker which is why often EP's are hesitant to do them. There is also a high risk that although it may initially be successfully, the tachycardia returns later. With the shortened pr interval and what your HR is now, one thought that comes to mind is possibly that your sinus node is not functioning and you now are in a junctional rhythm. You can still have a p wave with a junctional rhythm but you typically have no pr interval or a very, very small one. The p wave could also be found after the qrs, but it doesn't sound like this is the case for you. As to whether or not your doctor is going to recommend a pacemaker, I can't really say but with the symptomatic bradycardia, they may suggest it. Good luck!
I honestly was almost expecting to leave my last ablation with a pacemaker, because of the risk and warning. I couldn't function with my IST before, and my symptoms made my ep dr feel the risk of a pacemaker was warranted. I just didn't expect to almost be in the same place on the opposite end of the spectrum.
I'm not sure what my pr interval is, I haven't seen .. my ep dr just says "very short" ... I'm also not sure if I'm in sinus rhythm or not.
Just an update to this ... my heart rate eventually dropped into the 30s (I was alternating between junction and ventricular rhythms), never sinus, with pauses and I did end up with an electric heart beat and am doing great with it. (:
I am sorry to hear you needed a pacemaker but better that then the life you were living. Glad to hear things are going well for you. Take care.