简介:BackgroundThefactorsinfluencingtheq-wavechangesinV5andV6duringanterioracutemyocardialinfarction(AMI)havenotbeenthoroughlydescribed.MethodsWestudied70patientswithafirstanteriorAMI,inwhomtheelectrocardiogram(ECG)showedeitherdisappearanceofthenormalseptalqwave(n=24)orpresenceofpathologicalQwaveinV5andV6(n=46)duringfollow-up.TheECGandcoronaryangiographyfindingswerecorrelated.ResultsTherewasnodifferencebetweenthe2groupsintheculpritsiteproximaltoS1(46%vs.36%,P=0.405),buttheculpritsitewasmorefrequentlylocatedproximaltoD1inthegroupwithabnormalQwave(21%vs.67%,P=0.001).Patientswithdisappearanceoftheseptalqwavemoreoftenhadalargeobtusemarginalbranch(46%vs.22%,P=0.037)anddisappearanceoftherwaveinV1(88%vs.7%,P=0.001).PatientswithabnormalQ-wavemoreoftenhadalargeLAD(42%vs.71%),smallrwaveortallorwideRwaveinV1(0%vs.89%,P=0.001)andabnormalQwavesintheinferiorleads(33%vs.59%,P=0.044).ConclusionsInpatientswithfirstanteriorAMI,qwavechangesinV5andV6correlatedwiththemorphologyinV1.EmergingabnormalQwaveinV5/V6predictedtheculpritlesioninalargeLADproximaltoD1,butdisappearanceoftheseptalqwavecouldnotpredicttheculpritlesionproximaltoS1.
简介:BackgroundRightbundlebranchblock(RBBB)maypresentasslurredornotchedSwaveinleadV1.However,slurredornotchedSwavemayalsorepresentslowconductioninthemyocardium.MethodsWeretrospectivelyanalyzedtheQRSpatternsinleadsV3RtoV5Rin7patientswithaslurredornotchedSwaveinleadV1.ResultsIntheleadsV3RtoV5R,6patientsshowedincompleteorcompleteRBBBand1patientslurredornotchedSwave.ConclusionsInthemajorityofECGsinasmallpatientserieswithslurredornotchedSwaveinleadV1,QRSmorphologyindicatingincompleteorcompleteRBBBwaspresentinleadsV3RtoV5R.AfindingoffragmentedQRSintheseleadsmayindicateslowconductioninthemyocardium.
简介:“随着药物支架技术的不断进步,冠脉介入再狭窄率获得了持续的下降,使得越来越多的冠心病患者受益于这种微创治疗方式。但美中不足的是,PCI术后仍需要进行长期双抗血小板药物治疗。如果临床科研能显示某些药物支架可缩短双抗血小板治疗疗程,那么患者将可实现既通过急诊PCI术获得梗塞血管的即刻开通,又通过术后药物治疗控制经济负担,同时还可以减少因长期抗血小板治疗伴随的可能出血风险,一举多得。哈医大二院心内科团队最近完成的一项临床科研证实,拥有自主创新专利的BuMA药物洗脱支架可能就是最佳选择之一。”中华医学会心血管分会主任委员、北京大学第一医院霍勇教授于10月13日在2012长城国际心血管会议的BuMA临床研究结果新闻发布会上阐述观点。