I think those are in the back pocket

Here are some alternatives, depending on your use-case: https://soatok.blog/2024/11/15/what-to-use-instead-of-pgp/

This looks like a training device that can be set to play a specific scenario. If a real one detects either a stable heartbeat or no heartbeat at all, it won't allow you to defibrillate. Only certain irregular patterns make a shock beneficial and that's when it will recommend that.