['To study course of systemic inflammatory response syndrome (SIRS).', 'The relationship was observed between SIRS and the effect of burn injury on cellular and humoral immunity between survivors. Nonsurvivors were also compared. The gastric mucosal pHi was measured.', 'The SIRS initiated 22 hours after burn injury and peaked 3 days to 7 days postburn. Compared to the survivors significan increase of content of TNF and decrease of content of G-CSF were detected in the nonsurvivors serum. Obvious immunosuppression could be found. In patients with SIRS accompanied with infection or organ failure, marked increase of mortality was seen. The value of pHi was very low.'] Do [ The relationship between severe burn injury and systemic inflammatory response syndrome ]?