If the victim's breathing is accelerated and there are signs and symptoms of injury, hidden disease or dangerous condition, immediately call an ambulance, as the victim needs qualified medical care. If you are sure that rapid breathing is caused by a person’s emotional state, for example, fear, stress, then in addition to traditional help, do the following: 1. Eliminate the cause if possible. 2. Ask the person to relax and breathe slower as you breathe. For up to lamentation of hyperventilation is often sufficient to calm the person down. 3. If the problem a few minutes later is not you will resolve on its own, or if the victim the distant one will begin to lose consciousness as a result hyperventilation, call urgently ambulance.