[Rescue helicopter services for emergency treatment at the scene of the accident (author's transl)].

During the last three years 3639 emergencies were dealt with using the rescue helicopter "Christoph 4" in Hannover. Of these, 89.3% were primary flights to the scene of the accident to give qualified first aid by a medical team. The average distance to the scene of the accident was 20.8 km with an average flight time of 8.5 min. 2688 patients were treated by the helicopter crew. 89.8% of the patients had injuries of a severity of NACA (National Commitee for Aeronautics) 3 and more. Intubation and artificial respiration was carried out on 293 occasions. Shock treatment with blood substitute was given in 1593 cases. 30 resuscitations at the scene of the accident were successful.