Methods The antibacterials used in perioperative period were analysed in respect to defined daily dose(DDD),drug utilization index(DUI),the cost of drugs,and the days of hospital ization.

• 方法采用限定日剂量(DDD)、药物利用指数(DUI)及住院天数、药品费用等指标,分析围手术期患者抗菌药物的利用情况。