Is interleukin 6 an early marker of injury severity following major trauma in humans?
HYPOTHESIS: Interleukin 6 (IL-6), a multifunctional cytokine, is expressed by various cells after many stimuli and underlies complex regulatory control mechanisms. Following major trauma, IL-6 release correlates with injury severity, complications, and mortality. The IL-6 response to injury is supposed to be uniquely consistent and related to injury severity. Therefore, we designed a prospective study starting as early as at the scene of the unintentional injury, to determine the trauma-related release of plasma IL-6 in multiple injured patients. PATIENTS AND METHODS: On approval of the local ethics committee, 94 patients were enrolled with different injuries following trauma (Injury Severity Score [ISS] median, 19; range, 3-75). The patients were rescued by a medical helicopter. Subsets were performed according to the severity of trauma–4 groups (ISS, <9, 9-17, 18-30, and >32)-and survival vs nonsurvival. The first blood sample was collected at the scene of the unintentional injury b
