I am a candidate for ablation surgery. What this is? They adjust wires to your heart which will be able to control when heart misses a bit or goes very slow.
I have Atrial Fibrullation and suffer from horrible palpitations, my heart missing a bit and also my heart can't go sometimes higher than 40/min, which is very slow and it causes me to pass out.
I am not sure about your other condition, not familiar with it.
Did they look into pace maker? Also, I have very strong opinion about going and see couple of Dr. and it does not matter how much you trust your current Dr.
I learned in a hard way to do so. That is what I would do if I would be you.
Good luck to you!