1Intelligent technology is an effective way to improve the safety and quality of analgesiaCAO Hanzhong, MEN Yanhua, TU WeifengEditorial111-1162It is imperative for anesthesiologists to receive standardized training of perioperative transesophageal echocardiographyWANG Sheng, WANG E, YU Hai, YU Hui, PENG YonggangExpert Forum117-1203Management essentials during anesthesiaGUO XiangyangExpert Forum121-1224The comparative effect of I-gel and fexible laryngeal airway mask(FLAM) undergoing otitis media surgeryZHANG Huaming, KANG Fang, YIN Guobing, HUANG Xiang, LI JuanClinical Study123-1265The application of airway exchange catheter in patients undergoing tracheotomy after head and neck free flap transferQIU Baojun, ZHANG Tiecheng, WU Long, LI Xiaoying, WANG WeiClinical Study127-1326Application of PDCA cycle in reducing PACU unintended secondary intubation ratePIAO Mingyi, ZHAO Li, YU Xiaoling, YAN Min, ZHENG ZhoupengQuality Management and Promotion133-1357Continuous quality improvement in anesthesia department based on the JCI standardsHU Jiang, WANG E, GUO QulianQuality Management and Promotion136-1388Concepts and tools in health care quality managementLIU Xiaowen, ZHAO JingContinuing Education148-1519New advances in technology of epidural punctureWANG Xiaochen, FENG Zeguo, DU ChunyanReview Articles152-15610Anesthesiologist's responsibility and obligation in regarding of enhanced recovery after surgeryWEI TiegangReview Articles157-159