You know how sometimes you learn about something and suddenly you can't stop seeing every instance of it being done completely wrong? Yeah, that's me and ECGs right now. I've learned the structure of a normal ECG output, and so now I can't see (incorrect) fictional ECG output without going "Wait a second, that's not how those work!"
@noiob Not necessarily oh no. This is the closest match to that arrhythmia I can find: sinus bradycardia. It can happen in healthy folks (athletes, for instance), though it could also be due to some problem. So, maybe oh no, but maybe fine