The treatment of patients in the trauma room places extraordinary demands on the multidisciplinary and multiprofessional team with regard to expert qualifications and teamwork. The present study triangulates data extracted from observation, interviews and questionnaires. In general, team climate and teamwork are good, yet some problems could be identified. Not all team members-especially younger physicians and nurses-feel free to express their doubts and uncertainties. Furthermore, the treatment plan is not always clear for all team members. Absent or unclear leadership is seen as a main problem when a treatment proceeds negatively. The establishment of a team leader is therefore recommended.