Is your son by any chance anemic? Or dehydrated? I’ve been anemic all my life off and on, but last few episodes of bradycardia revealed very anemic. Just a thought/

My son has had two surgeries for w.p.w and s.v.t to eliminate the bad electrical pathways in his heart, however now he has extreme bradycardia sometimes in the low 20s and he gets very dizzy and his chest hurts, if he lies down with his feet up, it will pass but sometimes it leads into a seizure. However I do know that his heart will race at other times with seizures, I just wonder if he's developing another kind as well, or perhaps it's heart related, or vagus vagle, thank you for your answer though, it's interesting how the whole body works together.

i do the opposite. my heart is like they are beating a mile a minute.