简介:BackgroundRightbundlebranchblock(RBBB)maypresentasslurredornotchedSwaveinleadV1.However,slurredornotchedSwavemayalsorepresentslowconductioninthemyocardium.MethodsWeretrospectivelyanalyzedtheQRSpatternsinleadsV3RtoV5Rin7patientswithaslurredornotchedSwaveinleadV1.ResultsIntheleadsV3RtoV5R,6patientsshowedincompleteorcompleteRBBBand1patientslurredornotchedSwave.ConclusionsInthemajorityofECGsinasmallpatientserieswithslurredornotchedSwaveinleadV1,QRSmorphologyindicatingincompleteorcompleteRBBBwaspresentinleadsV3RtoV5R.AfindingoffragmentedQRSintheseleadsmayindicateslowconductioninthemyocardium.
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:“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。
简介:BackgroundComparedtoclopidogrel,Ticagrelorsignificantlyreducestheriskofcardiovasculareventsinpatientswithacutemyocardialinfarction(AMI)howeverincreasestheincidenceofbleedingandtheriskoffatalintracranialhemorrhage.Inthisstudy,wescreenedtheAMIpatientswithclopidogrelresistence,anddeterminedwhetherticagrelorsequentialtherapycouldreducetheriskofcardiovasculareventsandbleedingrisk.MethodsAtotalof319AMIpatientswereenrolledinthisprospectiveclinicalstudy.Theplateletinhibitionratesinadenosine5'-diphosphate(ADP)pathwaysweremeasuredbyathrombelastography(TEG)system.ThepatientswithclopidogrelresistanceweredividedintoTicagrelorsequentialtherapygroup(ticagrelorfor3monthsandclopidogrelfor9months,n=143)andClopidogrelgroup(clopidogrelfor12months,n=176).Theriskofmajoradversecardiacevents(MACE)andthesafetyendpointsat1-yearfollow-upwereanalyzed.ResultsTheratesofstentthrombosis(ST)(2.1%vs.8.0%,P=0.017)orMI(2.8%vs.10.2%,P=0.009)werelowerintheticagrelorsequentialtherapygroupthanintheclopidogrelgroup.Dyspneawasmoreoftenintheticagrelorsequentialtherapygroupthanintheclopidogrelgroup(17.5%vs.4.5%,P<0.001).Nosignificantdifferenceintherateofmajorbleedingwasfoundbetweenthegroups(3.4%vs.3.9%,P=0.528).ConclusionsInAMIpatientswithhyporesponsivenesstoclobidogrelticagrelorsequentialtherapygroupsignificantlydecreasedtheratesofSTandMIwithoutincreasedriskofmajorbleedingascomparedwithclopidolgrel.
简介:目的探讨乳内动脉(LIMA)-大隐静脉(SV)Y型复合桥血管的术中即时血流量以及术后中期通畅率.方法选择2013年1月到2015年12月24例在上海新华医院心胸外科接受非停跳冠状动脉旁路移植术(OPCAB)的患者作为研究对象,均在术中应用Y型复合桥血管(LIMA-SV).术中使用TrFM进行桥血管血流测定.出院后1年复查冠状动脉血管造影(CTA)评估桥血管通畅率.结果所有患者均接受OPCAB,平均吻合移植血管(2.5±0.5)支,术中无中转体外循环.住院期间无死亡患者.SV单根组和SV序贯组之间Y型复合桥血管主干(近端LIMA)的平均血流未见统计学差异(P>0.05),远端LIMA(LIMA-LAD)平均血流也未见统计学差异(P>0.05).SV序贯组的SV主干的平均血流高于SV单根组[(24.6±9.8)ml/min比(19.2±5.7)ml/min],但未见统计学差异(P=-0.056).两组之间不同靶血管的搏动指数(PI值)未见统计学差异.术后1年冠状动脉CTA显示,所有桥血管的总通畅率为96.7%(59/61),其中LIMA桥的通畅率为100%(24/24),SV桥的通畅率为94.6%(35/37).结论LIMA-SVY型复合桥血管能够为SV和远端LIMA提供足够的血流,中期通畅率良好,对不能获取右乳内动脉或桡动脉且合并升主动脉钙化的患者是一种良好的替代方案.
简介:目的探讨急性下壁心肌梗死患者心电图胸前导联ST段抬高与冠状动脉造影所示冠状动脉病变的关系及其临床意义.方法187例急性下壁心肌梗死患者,按入院时18导心电图胸前导联ST段改变分为2组,ST段抬高组(16例)和非ST段压低组(171例).所有患者均行冠状动脉造影术,病变适合行经皮腔冠状动脉成型术并检测B型钠尿肽(BNP).结果急性下壁心肌梗死伴胸前导联ST段抬高时多为右冠状动脉近段闭塞,尤其是圆锥支闭塞(P<0.01),且伴有右心功能不全和血流动力学障碍,与下壁右室心梗相比BNP差异有统计学意义(P<0.01).结论急性下壁心肌梗死合并胸前导联ST抬高表明为右冠状动脉近段或开口闭塞且多伴右室心肌梗死和心功能不全.