This is the latest (5th) edition of the well-known textbook ?Lecture Notes: Emergency Medicine?. The editorship has been passed from Moulton and Yates to the Royal College of Emergency Medicine (RCEM) which has set up an editorial committee to oversee the writing of the book. The Royal College of Emergency Medicine is the single authoritative body for Emergency Medicine in the UK. Emergency Medicine is the medical specialty which provides doctors and consultants to A Society for Academic Emergency Medicine; American College of Emergency Physicians Scientific Assembly; and Acem-Asm).