引用本文请长按绿色字,点击复制:李杰,严凤娇,唐娜,苏晨,江竞舟,刘梦辉,何建桂,王礼春.高密度高分辨标测下外科术后房性心动过速的电生理特征[J].中山大学学报(医学科学版),,42(1):95-.

摘要:观察在高密度、高分辨率视觉下的心外科术后房性心动过速(房速)的电生理特点及消融效果。回顾分析自年3月至年12月在医院因心外科术后房速,应用Orion微电极网蓝与Rhythmia标测系统进行标测消融治疗的全部患者。共入选21名患者,总共记录到26种房速,平均每种房速的标测时间为(19.1±7.1)min,所采取的电图(±)个。26种房速中,按部位分:20(76.9%)个位于右房,5(19.2%)个位于左房,1(3.8%)个为左右双房大折返;按心动过速机制分:24(92.3%)个为大折返房速,1(3.8%)个为微折返,1(3.8%)个为局灶房速。在大折返房速中,7个为双环“8”字折返,消融一环过程中有4个转为单环折返。另有一例为跨房间隔传导的双房大折返。21例患者2例复发,其中1例当时仅对游离壁疤痕至下腔静脉的连线进行消融,后再次手术时标测为三尖瓣峡部依赖性房速。心外科术后房速形式多样,以大折返房速为主,极少数为微折返或局灶起源。大折返房速可表现为双环折返或双房大折返。消融时除针对本次心动过速外,还需根据心房的基质情况进行预防性干预。

关键词:心外科术后房性心动过速;高密度标测;微电极;消融

Abstract:Toexploretheelectrophysiologiccharacteristicsofpost-cardiac-surgicalatrialtachycardia(AT)underultra-highdensityandhigh-resolutionmapping.Consecutivecaseswithpost-cardiac-surgicalATandtakingmappingusingOrionbasketballmini-electrodeandRhythmiamappingsystemwerecollectedandanalyzedinthefirstaffiliatedhospitalofSunYat-senUniversityfrommarchtodecember.Totally26ATswererecordedinthe21patientswithameanmappingtime(19.1±7.1)min.Amongthem,20(76.9%)ATslocatedinrightatrium,5(19.2%)inleftatrium,andonewasabi-atrialmacro-reentrantAT.Accordingthedifferenceoftachycardiamechanism,24(92.3%)weremacro-reentrantATs,onewasmicro-reentrant,andtheotherwaslocalactivation.Inthemacro-reentrantATs,7casesshowedadual-loopreentrantcircuitconfigurated“figure-of-eight”,onewasabi-atrialmacro-reentrywithatransmuralconductionfromleftsidetorightsideofatrialseptum.Duringablation,4patientsinthe7caseswith“figure-of-eight”dual-loopreentriesturnedintoasingle-loopreentry.Duringfollow-upwithanaverageof16(4,36)months,2casesrecurred,andonewasbecauseofnoprophylacticablationonthetricuspidisthmus.Post-cardiac-surgicalatrialtachycardiamainlymanifestsas


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