The usefulness of the serum s100b protein for predicting delayed neurological sequelae in acute carbon monoxide poisoning
Park, E; Ahn, J; Min, YG; Jung, YS; Kim, K; Lee, J; Choi, SC
Clinical toxicology, 50(3):183-188, 2012
CONTEXT: Some patients with acute carbon monoxide poisoning will experience delayed neurological sequelae. Several factors associated with delayed neurological sequelae have been reported, but these factors are unsatisfactory for the assessment of unconscious patients.
OBJECTIVE: The aim of this study was to assess the usefulness of the serum S100B protein as a biochemical marker for predicting delayed neurological sequelae.
MATERIALS AND METHODS: In this retrospective study, we evaluated the data for patients who visited an emergency medical center once during a period of 7 months. The enrollment criteria were the diagnosis of acute carbon monoxide poisoning and the measurement of the serum S100B level. A standardized extraction using medical records was performed.
RESULT: A total of 71 patients were enrolled, and 10 patients (14.1%) presented delayed neurological sequelae. The delayed neurological sequelae group had a longer duration of carbon monoxide exposure, a longer duration of loss of consciousness, and a worse mental status (p-value < 0.001). In addition, the S100B protein levels were higher in the delayed neurological sequelae group (0.891 vs. 0.063, p-value < 0.001). Multiple logistic regression analysis showed that only the serum S100B protein level was independently associated with the development of delayed neurological sequelae (OR, 120.594; 95% CI, 4.194-3467.220), and a serum S100B protein level of more than 0.165 μg/L predicted the development of delayed neurological sequelae (sensitivity 90%, specificity 87%).
DISCUSSION AND CONCLUSION: In the present study, the level of serum S100B protein was found to be useful for evaluating acute CO poisoning patients and was found to be an independent predictor of the development of DNS after acute CO poisoning.
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