Right... and to circle all that back around to the OPs original question, I think there's a couple of important points to remember when you're presenting a patient to the ED:
You have to be honest in knowing what you don't know and/or stand up for yourself if you know something specific when you're making that bedside presentation.
You have to have a relationship with the docs and nurses before they'll trust anything you have to say.
You have to have your **** together when you present your patient to the ED. The staff is much more likely to actually listen if you present your patient in an orderly and organized manner. Tell them what's up, tell them what you did, hand them copies of relevant material, like serial 12 leads, asking they need anything else...