But is "hyperventilating" actually a "problem" at all? Or what else was wrong with her? I'm not sure but isn't it true that you can get chest pain because of the hyperventilating (and stomach-ache?) Or was she hyperventilating due to the chest pain? Is it actually dangerous? What can you do about it and what can happen? (I always thought it was mainly a "teenager problem") And why did it take you one hour to calm her down? Where was the ambulance? Do you usually deal that long with patients while going on the RRU? Is your job normally done when the ambulance turns up?