Vagus nerve with blood pressure drop and adrenaline rush

For over ten years my daughter and her son have been working with doctors to discover the source of his petite-mall seizures.   Last night on television a young man was afflicted by a condition that caused him to faint. As they described the condition it strongly correlated to my grandson.

Basically, they were injecting him with isaprotelno (spelled phonetically

[voxpluribus]

It sounds like vagal syncope. Occassionally syncope can be confused with petit mal seizure since vagal syncope is sudden, with profuse sweating (the adrenergic response). Since I am not a physician, I base on scientific reading in the field. Thus, what you describe abot the show where the doctor injects isopreterenol, a beta adrenergic agent, makes some sense to me.