BACKGROUND: The effects of both hyperglycemia and hypoglycemia are deleterious to patients with neurologic injury. METHODS: On January 1, 2002, the neurointensive care unit at the University of Virginia Health System initiated a strict glucose control protocol (goal glucose < 120 mg/dl). The authors conducted an impact study to determine the effects of this protocol on patients presenting with aneurysmal subarachnoid hemorrhage. RESULTS: Among the 834 patients admitted between 1995 and 2007, the in-hospital mortality was 11.6%. The median admission glucose for survivors was lower (135 vs. 176 mg/dl); however, on multivariate analysis, increasing admission glucose was not associated with a statistically significant increase in the risk of death (P = 0.064). The median average glucose for survivors was also lower (116 vs. 135 mg/dl). This was significant on multivariate analysis (P < 0.001); however, the effect was small (odds ratio, 1.045). Implementation of the strict glucose protocol decreased median average glucose (121 vs. 116 mg/dl, P < 0.001) and decreased the incidence of hyperglycemia. Implementation of the protocol had no effect on in-hospital mortality (11.7% vs. 12.0%, P = 0.876 [univariate], P = 0.132 [multivariate]). Protocol implementation was associated with an increased incidence of hypoglycemia (P < 0.001). Hypoglycemia was associated with a substantially increased risk of death on multivariate analysis (P = 0.009; odds ratio = 3.818). CONCLUSIONS: The initiation of a tight glucose control regimen lowered average glucose levels but had no effect on overall in-hospital mortality.
BACKGROUND: The effects of both hyperglycemia and hypoglycemia are deleterious to patients with neurologic injury. METHODS: On January 1, 2002, the neurointensive care unit at the University of Virginia Health System initiated a strict glucose control protocol (goal glucose < 120 mg/dl). The authors conducted an impact study to determine the effects of this protocol on patients presenting with aneurysmal subarachnoid hemorrhage. RESULTS: Among the 834 patients admitted between 1995 and 2007, the in-hospital mortality was 11.6%. The median admission glucose for survivors was lower (135 vs. 176 mg/dl); however, on multivariate analysis, increasing admission glucose was not associated with a statistically significant increase in the risk of death (P = 0.064). The median average glucose for survivors was also lower (116 vs. 135 mg/dl). This was significant on multivariate analysis (P < 0.001); however, the effect was small (odds ratio, 1.045). Implementation of the strict glucose protocol decreased median average glucose (121 vs. 116 mg/dl, P < 0.001) and decreased the incidence of hyperglycemia. Implementation of the protocol had no effect on in-hospital mortality (11.7% vs. 12.0%, P = 0.876 [univariate], P = 0.132 [multivariate]). Protocol implementation was associated with an increased incidence of hypoglycemia (P < 0.001). Hypoglycemia was associated with a substantially increased risk of death on multivariate analysis (P = 0.009; odds ratio = 3.818). CONCLUSIONS: The initiation of a tight glucose control regimen lowered average glucose levels but had no effect on overall in-hospital mortality.
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