After being informed about the study and potential risks, patients meet the inclusion criteria would be given informed consent and entry the study. The data will be collected according to self-designed questionnaire, including :1) The baseline characteristics: would be recorded 6 hours after patients presentation;2) Patients' self evaluation for discomfort symptoms: would be recorded at day 0, week 1, 3 and 6, month 6 and 12；3) Neurological function: would be recorded at day 0, week 6, month 6 and 12.
The purpose of this study is to access the clinical characteristics and risk factors for neurological sequelae after acute carbon monoxide poisoning.