摘要活动抑制型谵妄（hypoactive delirium, HD）作为术后谵妄（postoperative delirium, POD）的一种重要亚型，占总体POD患者的50%，其死亡风险可能更高、预后更差。但目前此种类型谵妄不易识别，并且临床医师对其认识还不够全面，对患者预后造成不良影响。文章系统介绍了POD的定义、发生率、危险因素以及发病机制，进一步阐明了术后HD的临床表现、危险因素、评估、预防以及研究进展，希望能对防治此类谵妄有所帮助，改善患者预后，减轻经济负担。

abstractsHypoactive delirium (HD) is a major subtype of postoperative delirium (POD), which accounts for 50% in patients with general delirium. Patients who suffer from it have a higher risk of death and a worse prognosis. However, the understanding of postoperative HD is not adequate. This review systematically summarized the definition, incidence, risk factors and pathogenesis of POD, further addressed the clinical manifestations, risk factors, assessment, prevention and research advances of postoperative HD aims to improve patient's prognosis and reduce patients' economic cost.