Overall mortality was 21%, and was highest among those with inflammatory causes (43%). Mortality rates were 14% in those with infections and 9% in those with an unknown etiology.
After a mean follow-up of 20 months, morbidity was significantly better in the unknown etiology group than in the infectious and inflammatory groups. The Glasgow Outcomes Score was less than 4 in 67% of patients in the infectious group, 57% of the inflammatory group, and 24% of the unknown group.
Disclosures: Ms. Granerod reported no relevant disclosures; her review was funded by the Health Protection Agency. Dr. Davies reported no relevant disclosures; his study was funded by the Charitable Foundation of Guy's and St. Thomas' Hospital.