1Keep passing the torch and always on the way: The development and achievement of cardiac electrophysiology in ChinaYAO Yan, ZHANG Hai-cheng, CAO Jing-ying, DONG Jian-zeng, GUO Jun, LIU Tong, QU ZhengThe Party’s 100-year endeavor to improve people’s health769-77222021 Chinese expert consensus statement on 18-lead ambulatory ECGLU Xi-lie, DUAN Yang, ZHU Jin-xiu, DENG Guo-lan, WANG Jin-liGuidelines773-7763Preliminary clinical application of duodecapolar catheter for radiofrequecy catheter ablation of premature ventricular complexes originating from papillary musclesCAI Chi, WANG Jing, CHU Jian-min, HUA Wei, ZHANG ShuCardiac electrophysiology777-7814Clinical study of two three-dimensional electroanatomic mapping systems guiding radiofrequency ablation of atrioventricular nodal reentry tachycardiaGU Yun-fei, ZHANG Xuan, XUE Guo-hua, PAN Guang-jie, GUO Yu-bing, WU Peng-yu, QI Yu-jie, CHEN Wei-gang, TIAN TianCardiac electrophysiology782-7855Relationship between plasma level of microRNA-590 and ventricular arrhythmia after acute myocardial infarctionCHU Shi-chun, CHENG WeiCardiac electrophysiology786-7916Research progress in the diagnosis and treatment of hypertrophic cardiomyopathy with atrial fibrillationYANG Xiao-meng, JIANG HongCardiac electrophysiology792-7967Research progress of cardiac sympathetic activity assessment methodsLI Jia-kun, ZHENG Li-huiCardiac electrophysiology797-8018Research progress of ventricular arrhythmia in left ventricular summit areaJIA He, JIANG Cheng, GU Jia-ning, YU BoCardiac electrophysiology802-8059Left atrial stiffness syndrome after cryoballoon catheter ablation of atrial fibrillation:a case reportXUAN Chang-bo, YANG Shi-wei, PAN Guo-zhong, WANG Xian, ZHOU Zhi-ming, HU Bin, JIA De-an, SUN Jia-yin, REN Xiao-xia, HAN Hong-ya, WANG Hai-yang, YU Hai-liangCardiac electrophysiology806-80910Transient"f"waves disappearance of atrial fibrillation caused by hyperkalemia:a case reportZHAO Li, SHI Ya-junCardiac electrophysiology810-81111Relationship between different body mass index and body fat ratio and long-term prognosis of hypertrophic cardiomyopathyZHOU Ke, ZHANG Li, CHEN Shi-jian, PU Xiao-bo, CHEN Li, YANG BoClinical practice812-81712Relationship between serum VEGF on admission and left ventricular remodeling in patients with acute anterior ST-segment elevation myocardial infarction undergoing emergency PCIYANG Yang, LI Nan, LAI Hong-meiClinical practice818-82313Study on correlation between serum shear type X-box binding protein 1 level and myocardial perfusion injury after emergency percutaneous coronary intervention for acute myocardial infarctionFU Chao, WANG Ri-xing, LIN Fang-chongClinical practice824-82814Effect of hemoglobin on the prognosis of patients with chronic coronary syndrome after PCIWANG Ting, ZHAO Lian-shan, ZHANG LiangClinical practice829-83415Outcomes of transcatheter aortic valve replacement via axillary artery approachXU Dong-hui, PENG Xiao-ping, GUO Ran, TANG Yi-da, LIU Jian, ZHANG Dong-hui, WANG Zheng-jun, FENG Xiang, WANG XuClinical practice835-83916Multivariate analysis of acute lung injury after cardiac and macrovascular surgeryJIANG Xue-yan, JIANG Zhao-lei, YUAN Yuan, YANG Qi, MEI JuClinical practice840-84217Cholinergic anti-inflammatory pathway and its role in regulating cardiac inflammationYU Jiang, ZHANG Heng, ZHANG Run-fengReview843-84818The clinical value of CMR myocardial strain assessment after acute myocardial infarctionGUO Qian, GUO Rui-feng, WANG Xiao, NIE Shao-ping, QUE BinReview849-85419The role of sympathetic nervous system in the development of pulmonary arterial hypertensionCHEN Jie, BAO Ming-weiReview855-85920Research progress of stem cell transplantation in the treatment of pulmonary arterial hypertensionFENG Xiao-lan, ZHOU Xu, GUANG Xue-feng, DAI Hai-longReview860-864 