ER work up for paediatric febrile seizures

As a paramedic (Canada) we start to see many febrile seizures this time of year. With new and worried parents wanting to go to the ER while veterans on their second or third kid often opt to stay home. Though knowing multiple / complex febrile seizures are rare, my partner and I have realized we don’t know much about what further work up is done upon arrival at ER. Can someone shed some light on what, if any, further work up is done so we can provide more informed decision making to the parents? This is assuming it’s a pretty evident case of seizure secondary to known illness in household or child.

In your opinion, do all simple febrile seizures require a trip to ER?