目的:评估无水乙醇注射Marshall静脉(vein of Marshall,VOM)在持续性心房扑动(简称房扑)、心房颤动(简称房颤)二尖瓣峡部线性消融中的有效性和安全性。方法:收集2019年9月—2020年5月上海市胸科医院采用射频消融+无水乙醇注射VOM治疗持...目的:评估无水乙醇注射Marshall静脉(vein of Marshall,VOM)在持续性心房扑动(简称房扑)、心房颤动(简称房颤)二尖瓣峡部线性消融中的有效性和安全性。方法:收集2019年9月—2020年5月上海市胸科医院采用射频消融+无水乙醇注射VOM治疗持续性房扑、房颤患者72例(VOM组)的临床资料,同时选择采用左房线性消融治疗持续性房扑、房颤患者72例作为对照(对照组)。入选患者均行二尖瓣峡部线性消融手术,术中验证二尖瓣峡部线阻断情况,术后随访房性心律失常和心包积液发生情况,均随访12个月以上。结果:VOM组术中验证二尖瓣峡部线阻断63例,其中需要联合心内和心外膜补点消融达到二尖瓣峡部线14例,未能阻断二尖瓣峡部线9例。对照组术中验证二尖瓣峡部线53例,未能阻断19例。随访12~20个月,VOM组房性心律失常复发20例,而对照组房性心律失常复发30例。结论:在持续性房扑、房颤消融治疗中,经VOM行无水乙醇注射能有效阻断二尖瓣峡部线性传导,有助于提高二尖瓣峡部线成功率,减少房颤消融术中二尖瓣峡部相关的房扑发生率,且不增加严重并发症的发生率。展开更多
The railway mobile communication system is undergoing a smooth transition from the Global System for Mobile Communications-Railway(GSM-R)to the Railway 5G.In this paper,an empirical path loss model based on a large am...The railway mobile communication system is undergoing a smooth transition from the Global System for Mobile Communications-Railway(GSM-R)to the Railway 5G.In this paper,an empirical path loss model based on a large amount of measured data is established to predict the path loss in the Railway 5G marshalling yard scenario.According to the different characteristics of base station directional antennas,the antenna gain is verified.Then we propose the position of the breakpoint in the antenna propagation area,and based on the breakpoint segmentation,a large-scale statistical model for marshalling yards is established.展开更多
文摘目的:评估无水乙醇注射Marshall静脉(vein of Marshall,VOM)在持续性心房扑动(简称房扑)、心房颤动(简称房颤)二尖瓣峡部线性消融中的有效性和安全性。方法:收集2019年9月—2020年5月上海市胸科医院采用射频消融+无水乙醇注射VOM治疗持续性房扑、房颤患者72例(VOM组)的临床资料,同时选择采用左房线性消融治疗持续性房扑、房颤患者72例作为对照(对照组)。入选患者均行二尖瓣峡部线性消融手术,术中验证二尖瓣峡部线阻断情况,术后随访房性心律失常和心包积液发生情况,均随访12个月以上。结果:VOM组术中验证二尖瓣峡部线阻断63例,其中需要联合心内和心外膜补点消融达到二尖瓣峡部线14例,未能阻断二尖瓣峡部线9例。对照组术中验证二尖瓣峡部线53例,未能阻断19例。随访12~20个月,VOM组房性心律失常复发20例,而对照组房性心律失常复发30例。结论:在持续性房扑、房颤消融治疗中,经VOM行无水乙醇注射能有效阻断二尖瓣峡部线性传导,有助于提高二尖瓣峡部线成功率,减少房颤消融术中二尖瓣峡部相关的房扑发生率,且不增加严重并发症的发生率。
基金supported in part by the Fundamental Research Funds for the Central Universities under Grant No.2022JBXT001in part by NS⁃FC under Grant No.62171021+1 种基金in part by the Project of China State Rail⁃way Group under Grant No.P2021G012in part by ZTE Industry⁃University⁃Institute Cooperation Funds under Grant No.I21L00220.
文摘The railway mobile communication system is undergoing a smooth transition from the Global System for Mobile Communications-Railway(GSM-R)to the Railway 5G.In this paper,an empirical path loss model based on a large amount of measured data is established to predict the path loss in the Railway 5G marshalling yard scenario.According to the different characteristics of base station directional antennas,the antenna gain is verified.Then we propose the position of the breakpoint in the antenna propagation area,and based on the breakpoint segmentation,a large-scale statistical model for marshalling yards is established.
