nostr:npub1q9ma5xxhn8m69ztdj3lrefpnarszxgh3gk8wykkq53gfsl80mlssulzgdu 

just a hint: the government changed medicare rebates for ecg a year or two ago, in some instances making it more tedious to get an ecg.
the next time you have a massive reading on your pulse oximeter, consider calling an ambulance (if you have insurance cover) because if they think your heart is dicky paramedics will automatically whip out the ecg machine, in my experience. this would make diagnosis much simpler for you. also, heart things can happen at random times, and an ambo is a good way to get a reading while stuff is actually happening. 
ps i am not qualified to give medical advice, and wouldn’t over the internet anyway - but maybe the problems with organising an ecg are something to discuss with your gp practice?

friend tells me svt is very treatable with medication. 

be well 💐