• C L Sprung, D R Schultz, E Marcial, P V Caralis, M A Gelbard, P I Arnold, and W M Long.
• Crit. Care Med. 1986 Jun 1; 14 (6): 525-8.

AbstractTo evaluate the status of the complement system and to determine the effects of corticosteroids on complement component levels in septic shock, C3, C4, and Factor B were measured in 42 patients with severe late septic shock. Serum levels of C4 and Factor B correlated with C3 levels (r = 0.48 and 0.64, respectively; p less than .01) in patients in shock for more than 4 h, but only Factor B correlated with C3 (r = 0.85; p less than .01) in patients in shock for 4 h or less. C3 and Factor B levels were significantly (p less than .05) lower in patients who died (12,174 +/- 1,524 CH50 U/ml and 14 +/- 1 mg/dl, respectively) than in patients who survived (18,418 +/- 2,833 CH50 U/ml and 21 +/- 2 mg/dl, respectively). Corticosteroids did not alter complement component levels. The alternative pathway appears to be activated early in septic shock, whereas the classical pathway is activated later. C3 and Factor B levels may predict survival of patients in septic shock. In this study, corticosteroids did not change the complement component levels of patients in late severe septic shock.

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