I've had this infrequently for over 30 years, sometimes it's for a few seconds and other times it can last a few hours. Had ecgs dozens of times and other tests and it was confirmed as svt.
I'm not too stressed at the moment just can't get it to jolt back to normal.
Tried breathing exercises, coughing, pushing down as if to poo. Nothings working. I can feel trapped wind gurgling around so know its caused by that pushing on the vegus nerve .
Any fellow sufferers with tips would be greatly appreciated.