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Profile and long-term prognosis of glucose tight control in intensive care unit - patients: a cohort study.

OBJECTIVES: Stress-induced hyperglycemia is frequent in critically ill patients and has been associated with increased mortality and morbidity (both in diabetic and non-diabetic patients). This study objective was to evaluate the profile and long-term prognosis of critically ill patients undergoing tight glucose-control.

METHODS: Prospective cohort. All patients admitted to the intensive care unit over 1-year were enrolled. We analyzed demographic data, therapeutic intervention, and short- (during the stay) and long-term (2 years after discharge) mortality. The patients were categorized in 2 groups: tight glucose control and non-tight glucose-control, based on the unit staff decision.

RESULTS: From the 603 enrolled patients, 102 (16.9%) underwent tight control (glucose <150 mg/dL) while 501 patients (83.1%) non-tight control. Patients in the TGC-group were more severely ill than those in the non-tight control group [APACHE II score (14 ± 3 versus 11 ± 4, P=0.04), SOFA (4.9 ± 3.2 versus 3.5 ± 3.4, P<0.001) and TISS-24h (25.7 ± 6.9 versus 21.1 ± 7.2, P< 0.001)]. The tight control group patients also had worse prognosis: [acute renal failure (51% versus 18.5%, P<0.001), critical illness neuropathy (16.7% versus 5.6%, P<0.001)] and increased mortality (during the ICU-stay [60.7% versus 17.7%, P<0.001] and within 2-years of the discharge [77.5% versus 23.4%; P<0.001]).

CONCLUSION: Critically ill patients needing tight glucose control during the unit stay have more severe disease and have worse short and long-term prognosis.

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