AI on ECGs seems to be a fruitful area of research, right now. There's one that predicts age and sex, one for atrial fibrillation, one forwill you die soon (presumably from a heart condition!) and now one for blood-sugar.
The problem in several of these is there isn't a clear way of saying why the AI is predicting the outcome in question, which could be somewhat unnerving as a patient on the receiving end in front of a doctor shrugging...