在防治或诊断疾病过程中,药物往往会产生与防治等目的无关而又不利于患者的不良反应(Adverse Drug Reactions, ADRs)几乎所有药物都可引起不良反应,只是反应的程度和频率有所不同。随着药品种类日益增多,药物不良反应的发生率也逐年增加。据报道,国外由于药物不良反应而急症入院的占3％左右。约有15-30％患者在住院期间因产生药物不良反应而延长住院期或死亡。国内情况可能与此相仿或更高。 In the prevention and treatment of diseases, the drugs often produce adverse reactions (ADRs) that are not related to the purpose of prevention and treatment and other adverse reactions (ADRs). Almost all drugs can cause adverse reactions, but the degree and frequency of reactions vary . With the increasing types of drugs, the incidence of adverse drug reactions also increased year by year. It is reported that due to adverse drug reactions abroad and emergency admission accounted for about 3%. About 15-30% of patients have prolonged hospitalization or death due to adverse drug reactions during hospitalization. The domestic situation may be similar or higher.