"How did this happen?"
Alex was rushing towards the ICU ward as he was thinking to himself. He was very confused and taken aback by the words he heard. In his mind, it was impossible to happen.
After all, How can Gloria have a code blue? Code blue is only used for the patient when they need urgent medical attention or they either have cardiac arrest aka heart attack or it's completely stopped.
This is very strange as in common words heart-stopping means the death of an individual, Which is why he could not understand how someone like Gloria who has a heroine status.
He could have accepted if there were protagonists present near her as it's more than likely it would happen because of the triggering of the protagonist's halo but knew it was impossible.
He himself took care of Jake personally, So he knew there was no way he could recover this quickly at all. Even his survival from the backlash of that artifact is nothing less of a miracle.