I am actually surprised this doesnt happen more often, ER at hospitals are pretty ****, I had symptoms of a stroke once and got turned away from a hospital, went to a diffrent, smaller hospital and still had to wait 2 hours. I think best thing to do is call an ambulance and deal with paramedics not walk in there and deal with nurses.
In australia now there is an ad campaign saying dont hesistate to call an ambulance if your having chest pain, which I dont understand because the ERs are full enough as it is, coincidently my mate was having chest pain and the ambulance came, what he didnt tell them was he was on a cocktail of drugs, they just told him hes dehydrated and to drink water and it would cost $700 to take him to the hospital.