• J Neurosurg Sci · Jun 2012

    Early predictive factors on mortality in head injured patients: a retrospective analysis of 112 traumatic brain injured patients.

    • L Prisco, F Iscra, M Ganau, and G Berlot.
    • Department of Perioperative Medicine, Azienda Ospedaliera Universitaria Mista, Ospedali Riuniti di Trieste, Trieste, Italy. sisifo31@hotmail.com
    • J Neurosurg Sci. 2012 Jun 1;56(2):131-6.

    AimEarly hyperglycemia is a feature of traumatic brain injured (TBI) patients. The aim of our study was to analyze the impact of early hyperglycemia on in-ICU mortality in isolated TBI and its correlations with other factors responsible for secondary injury.MethodsWe studied admission values (AV) and worse values in the first 48 hours (WV 48 h) of 112 ICU TBI patients (mortality 29.6%) of blood glucose (BG), base excess (BE), mean arterial pressure (MAP), PaO2/FiO2 ratio and serum hemoglobin (Hb). Predictive strength as the area under the receiver operating curves (AUROC) and correlation between all variables were calculated.ResultsData are expressed as median, 1st-3rd quartile. Both BG AV (147.5, 126-182 mg/dL; AUROC 0.716, P=0.0002) and WV 48 h (156.5, 132-192 mg/dL; AUROC 0.721, P=0.0001) are predictive of mortality. AV and WV 48 h are respectively: PaO2/FiO2 (366.8, 237.2-477.6 vs. 320, 214.4-426; P=0.05), MAP (90, 80-100.5 vs. 75, 66-83 mmHg; P<0.0001) and Hb (11.4, 9.7-13.1 vs. 10.6, 9-12.2 g/dL; P<0.02). BG AV and WV 48 h correlates with: age (r=0.419, P<0.0001 and r=0.489, P<0.0001), PaO2/FiO2 AV (r -0.223, P<0.03 and r -0.236, P<0.02), PaO2/FiO2 WV 48 h (r -0.215, P<0.03 and r -0.279, P<0.005) and MAP WV 48 h (r -0.216, P<0.03 and r -0.261, P<0.007).ConclusionEarly hyperglycemia is a major predictor of mortality and correlates with other factors responsible for secondary injury. Early hyperglycemia seems to be a marker of inflammatory reaction responsible for early cardiovascular and respiratory impairment.

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