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I think Emergency medicine and Intensive care are closely knitted as Anaesthsia and Intensive care.There is no Intensive care Training as such in most of the countries and Anesthetists take over IC(Intensive Care)after some training/experience in IC(that is the case in UK might be different in USA).
So its time for IC to be different speciality and proper training(may be too ambitious) but in the meantime i don't find any fault with EM guys getting dual accredition in EM and ICU as the Anaesthetists are doing.There is some argument about skill sets but i think all the three specalities cover the common generic skills in their respective training it is up to the awarding body to make sure the person attains particular IC skills before the accredited.
In UK EM guys can brach out into 4 different directions EM+IC, EM+PEM, EM+ACUTE MEDICINE, EM+ACADEMIC EM.