Abstract
The effects of hyperglycemia and insulin therapy on septic outcome have not been well studied. Septic hyperglycemia was induced by infusion of TPN (254 kcal/kg x d) immediately following cecal ligation and puncture (CLP) surgery in rats. Animals (N = 109) were monitored for blood glucose and followed for survival for 4 days. Separate cohorts (N = 36) were sacrificed at 22 hours post-CLP and analyzed for cytokines/chemokines, hormones, and organ damage markers. The effects of insulin treatment on 4 day survival were also examined (N = 60). Hyperglycemic septic animals had significantly higher blood glucose (p < 0.0001), plasma proinflammatory cytokine levels, serum organ damage markers (p < 0.05) and reduced mean survival time (p < 0.001). Insulin treatment (2 IU/kg/hr) resulted in significantly lower blood glucose (p < 0.01) and improved 4 day survival (p < 0.03). Hyperglycemia is associated with greater morbidity and mortality in sepsis. Insulin therapy significantly improved survival suggesting that management of hyperglycemia with insulin may improve outcome in septic patients.
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