Immunologial complications frequently occur during the clinical course
in patients with multiple injuries. The increased release of pro-infl
ammatory mediators during the immunological response to trauma may lea
d to the systemic inflammatory response syndrome (SIRS) and furthermor
e, to multisystem organ failure (MOF), which is associated with a mort
ality of up to 80%. The development of multiple organ failure followin
g major trauma is associated with remote organ failure, the dysfunctio
n of organs which were not initially affected by the traum. This manus
cript reviews recent data in experimental trauma research and offers a
more detailed evaluation of the immunological findings in trauma pati
ents. Hn particular, the role of pro- and anti-inflammatory cytokines
in the development or SIRS, MOF and ROF is discussed. Despite the enor
mous progress in clinical immunology and the available data on trauma-
induced immune dysfunction, a large number of questions still remain t
o be answered before the immunological alterations following severe tr
auma can be beneficially influenced by immunomodulatory therapeutic ef
forts.