Marshall静脉无水乙醇消融所致的左心房低电压区分布特征的定量分析
Analysis of Distribution of Left Atrial Low Voltage Area Induced by Vein of Marshall Ethanol Infusion
李华龙 1李超 1彭文杰 1殷建龙 1李腾1
作者信息
- 1. 中国医学科学院阜外医院深圳医院 心律失常病房, 深圳 518000
- 折叠
摘要
目的:定量描述Marshall静脉(VOM)无水乙醇消融后左心房低电压区的分布特征.方法:回顾性连续入选 2021 年 9 月至 2023 年 3 月期间在中国医学科学院阜外医院深圳医院同时行心房颤动射频导管消融术及VOM无水乙醇消融的患者 30 例,平均年龄(61.6±10.1)岁,女性 5 例(16.7%);通过比较VOM无水乙醇消融前后左心房高密度标测结果,评估消融所致的低电压区分布及面积.结果:低电压区分布可远达左上肺静脉顶部、二尖瓣峡部、左心房后壁下方,其中≥80%的低电压区位于左侧下嵴部及二尖瓣峡部肺静脉侧.低电压区平均面积为(9.3±4.6)cm2,低电压区平均面积占左心房表面积的(4.1±1.9)%,最大面积占左心房表面积 6.9%,最小面积占 1.2%.VOM往左心房顶部延伸越远、分支越多,无水乙醇消融所致的低电压区域面积越大.结论:VOM无水乙醇消融所致的低电压区最常见的部位是左侧下嵴部及二尖瓣峡部肺静脉侧,低电压区个体差异较大.低电压区分布及面积大小与VOM的走形和分支相关.
Abstract
Objectives:To quantitatively explore the distribution characteristics of low voltage areas in the left atrium after vein of Marshall(VOM)ethanol infusion.Methods:Between September 2021 and March 2023,thirty consecutive patients admitted to our hospital and underwent radiofrequency ablation for atrial fibrillation combined with VOM ethanol infusion were retrospectively enrolled,with a mean age of(61.6±10.1)years and 5(16.7%)females.By comparing the high-density mapping results of the left atrium before and after VOM ethanol infusion,the distribution and area of low voltage zones were evaluated.Results:The low voltage areas could extend to the roof of the left upper pulmonary vein,mitral isthmus and the posterior wall of the left atrium.More than 80%of the low voltage areas were located on the lower half ridge and the pulmonary vein side of the mitral isthmus.The average area of the low voltage zone was(9.3±4.6)cm2;the average percentage of the low voltage zone covering the left atrium surface was(4.1±1.9)%,with a maximum of 6.9%and a minimum of 1.2%.Further extending and more branches of VOM resulted in larger low voltage area.Conclusions:The most common location of low voltage areas caused by VOM ethanol infusion was the lower half ridge and the pulmonary vein side of the mitral isthmus,with significant individual differences.The distribution and area of low voltage zones were related to the extending and branching of VOM.
关键词
心房颤动/Marshall静脉/无水乙醇消融/低电压区Key words
atrial fibrillation/vein of Marshall/ethanol infusion/low voltage area引用本文复制引用
基金项目
深圳市科技计划(JCYJ20180302173927276)
深圳市南山区卫生科技项目(NS2022138)
出版年
2024
NETL
NSTL
万方数据