Etiology Benzodiazepines(bzd) Long acting(half life >30h) chlordiazepoxide(利眠宁 diazepam(地西泮、安定) flurazepam(氟安定) Short acting(half life 6-30h) alprazolam(阿普唑仑) ● Ultrashort acting: triazolam(三唑仑)Etiology Benzodiazepines (BZD) • Long acting (half life >30h): chlordiazepoxide (利眠宁) diazepam（地西泮、安定） flurazepam （氟安定） • Short acting (half life 6-30h): alprazolam(阿普唑仑) • Ultrashort acting : triazolam(三唑仑)