1Summary of anesthesia management of surgical patients and prevention and con-trol work during the prevention and control of COVID-19 epidemicZHANG Xiaoning, QIAO Changlong, GU Changping, ZHOU Fei, WANG Yuelan, ZHAO YuanhaoCOVID-19 Prevention and Control187-1902Opportunities and challenges of standardized anesthesia managementHUANG Qiaowen, ZHU Bin, LIN Zhijian, PENG YonggangExpert Forum196-2013Consideration about the quality and safety of anesthesia under DRG payment reformHE Hao, WU Zhouyang, CHEN XiangdongExpert Forum202-2054Clinical application of the microstream PET CO2 monitoring via the nasal catheter in patients undergoing ERCP under general anesthesiaLUO Zhonghui, YANG Yan, TANG Hui, LUO Jie, XIANG Yonghui, HU XiaolingClinical Study206-2095The efficacy of ultrasound-guided suprainguinal fascia iliaca compartment block on postoperative analgesia in patients undergoing total hip arthroplasty through the direct anterior approachXIA Min, CHAI Xiaoqing, ZHU Bolang, ZHANG Wei, TAO Jin, ZHU Chen, WANG Jiawu, YUAN Ji, CHEN XuClinical Study210-2156The practice model of case discussions in primary hospitals organized by Hainan Provincial Anesthesia Quality Control CenterLIN Youcai, XU Zhixin, TIAN Yi, WU Duozhi, XIANG Jingguo, ZHOU QiQuality Management and Promotion216-2187Application and quality management effect of quality control circle activities in improving the satisfaction degree of painless deliveryDENG Lian, ZHANG Haihong, HUANG Zhujiang, CAI Mingyang, HU ZurongQuality Management and Promotion219-2238Study on the practice of COVID-19 clinical nursing managementLIU Fei, LI Jiayu, BAI Ting, LIU Qingling, ZHANG Jian, LI HuiNursing Study231-2359Research progress in the relationship between anesthesia and Alzheimer's diseaseLU Lin, DUAN Hongjun, ZUO MingzhangReview Articles236-23910Advances in the prevention and treatment of perioperative neurocognitive disor-ders with dexmedetomidineJIA Mimi, YAN Qi, MA Shangwen, YAN WenjunReview Articles240-244