Ok...I really am asking for a friend. I've always seen that in a post and laugh...but I'm serious. So this guy is in his 60's. He's not feeling well, and goes to Dr. and he has a fever and low BP and discovers hes in tachycardia. Dr. calls ambulance and he goes into a-fib in ambulance but he converts on his own. He is discharged from hospital in 2 hrs. Dr. later determines that he had bad reaction to antibiotics he was taking for an injury to his finger. So, how would FAA handle this for 2nd or 3rd class medical? No other history of cardiovascular events. Thanks.