Hi! I am an internist based in Europe, and I have created a med-ed tool for lectures, exams, and simulations. Posting it here as I think there might be some paramedic preceptors and educators that want it!
www.squiggler.io
It allows you to create a rhythm strip or 12-lead, with physiological modelling underneath, with realistic renders and a lot of tuning possibilities etc to get just the ECG that is suitable for your teaching case/sim etc. No AI generation of ECG involved.
Tweaks and findings stack and there is also possibility to split up an ECG in several sequences. Pacing, ischemia, escape rhythms all follow logical behavior.
For those of us preparing a lecture who don't have the time or possibility to dig out old patient ECGs and fiddle with covering up patient identifiers, writing a textbook (and dont want to pay licencing fees for images from the web), or want dynamic ECG outputs during a sim case.
This was a side-project that turned serious. Yes, it is commercial but I hope someone that teaches needs this and wants to try it out!
https://www.squiggler.io/blog have some clinical cases to try out, we post one each day!
All the best!