简介：在正常情况下,除Ⅲ导联中ST段可降低0.10mV以外,其他各导联中ST段降低均不应大于0.05mV,超过此标准即为ST段压低。临床上将其分为水平型、下斜型和下垂型等。以上表现均提示心肌缺血或者有其他器质性的损害。

简介：目的：通过观察急性ST段抬高型心肌梗塞（STEMI）直接经皮冠状动脉介入治疗（PCI）术后,梗塞相关动脉（IRA）达心肌梗塞溶栓（TIMI）血流3级患者心电图ST段回落程度,探讨ST段回落与心肌损伤及心脏收缩功能的关系。方法：选择在发病12h内接受直接PCI治疗后TIMI血流达到3级的STEMI患者115例,PCI术前、术后行心电图检查,观察ST段回落情况,术前、后测定患者肌酸激酶（CK）、肌酸激酶同工酶（CK-MB）及肌钙蛋白T（cTnT）,术后测定左室射血分数（LVEF）;按照ST段回落幅度（∑STR）不同,患者被分为两组：A组：∑STR〈50%,21例,为心肌灌注不良组,B组：∑STD≥50%,94例,为心肌灌注良好组;分析两组患者ST段回落程度与CK、CK-MB、cTnT及LVEF的关系。结果：（1）两组患者IRA部位、病变血管支数,PCI治疗前TIMI血流分级、cTnT水平,发病到PCI时间等差异均无显著性（P〉0.05）;（2）两组患者术前、后CK、CK-MB水平差异无显著性（P〉0.05）;（3）术后A组cTnT水平明显高于B组[（1.30±0.43）μg/L∶（1.0±0.45）μg/L,P〈0.05];（4）术后A组LVEF明显低于B组[（44.13±4.83）%∶（47.93±5.23）%,P〈0.05]。结论：急性ST段抬高型心肌梗塞直接PCI术后,TIMI血流达到3级,ST段回落良好的患者,心肌组织水平灌注程度较好,心肌损伤程度轻,左心收缩功能较好。

简介：正常情况下，某些导联中也会出现ST段轻度抬高。其标准如下：

简介：

简介：患者女,25岁.因与邻居发生争吵,自服强痛定20片,约30min后发生头晕、恶心、呕吐、困倦、腹胀、心前区不适,被同事发现后,随即送院诊治.

简介：目的探讨ST—T改变的鉴别方法及诊断意义。方法对210例患者除作心电图（ECG）外井做血生化（血脂、血糖、肝肾功能、心肌酶谱、甲状腺功能测定系列等）、超声心动图、心脏X线等检查，随机抽取54例行试验性治疗，即给予50％G．S250ml加复方丹参注射液20ml，生脉注射液100ml均1／d，10d。再规律休息1w后对比治疗前后ECG。结果54例治疗前后ECG比较无明显变化，并随访3—12个月无一例发生心脏事件，随机抽取32例ECG并做多帧前后比较差异无统计学意叉。结论本组病倒经临床检查排除药物影响、器质性心脏病及继发性心脏病。试验性治疗ST—T无改变，提示此组人群中ST—T改变为非特异性的。

简介：BackgroundNon-ST-segmentelevationacutecoronarysyndrome(NSTE-ACS)isanacuteheartdiseasecausedbyincompleteocclusionofrelatedcoronaryarterieswithunstableatheroscleroticplaques.LeadaVRSTsegmentelevationandcTnIpositivearecloselycorrelatedtotheprognosisofNSTE-ACSpatients.However,therearefewstudiesapplyingthetwopredictorstoearlyriskstratificationinNSTE-ACSpatients.MethodTwohundredandfivecasesofNSTE-ACSpatientsfollowedupfor6monthsafterdischargewerereviewed.Allpatientsweredividedintofourgroups:GroupA-cTnInegativecombinedwithaVR-non-ST-segmentelevationgroup(100cases);GroupB-cTnInegativecombinedwithaVR-ST-segmentelevationgroup(31cases);GroupC-cTnIpositivecombinedwithaVR-non-ST-segmentelevationgroup(43cases);GroupD-cTnIpositivecombinedwithaVR-ST-segmentelevationgroup(31cases).Therewasnosignificantdifferenceingender,age,oldmyocardialinfarction,previousPCIhistory,hypertension,anddiabetesbetweenaVR-STelevationgroupandnoaVR-STelevationgroup.Themorbidityofleftmainorthree-vesselcoronaryarterydiseaseaswellasadversecardiovasculareventsinthefourgroupswereobservedandanalyzed.Results(i)Themorbidityofleftmainorthree-vesselcoronaryarterydiseasewashighestinGroupD(87.1%),andwasmarkedlyhigherinGroupB(41.9%)thanthatinGroupA(7%)orGroupC(9.3%);(ii)TheincidenceofadversecardiovasculareventswashighestinGroupD(77.4%),andwasmuchhigherinB(35.5%)ascomparedwiththattinGroupA(1%)orgroupC(7%).ConclusionElectrocardiographicleadaVRST-segmentelevationcombinedwithcTnIpositivehasanimportantclinicalvalueinpredictingtheprognosisofthepatientswithNSTE-ACS.

简介：冠心病是以冠状动脉粥样硬化为基本病变,引起冠状动脉管腔狭窄的缺血性心脏病.大多数冠心病患者,在清醒或睡眠状态中可出现缺血性ST-T改变及各种类型的心律失常.如在慢性冠状动脉供血不足的基础上发生心绞痛,可出现显著的ST-T改变或ST-T伪改善状态.

简介：ST段抬高的临床意义主要分如下两种情况：1ST段抬高与QRS波群主波同向

简介：ObjectivesToexaminepatientdelay(PD)inseekingtreatmentamongpatientswithST-elevationmyocardialinfarction(STEMI)andtoidentifyfactorsinfluencingPD.MethodspatientswithSTEMIweredividedintotwogroupsbasedonPD:ShortPDgroup(PD≤60minutesafteronsetofsymptoms)andlongPDgroup(>60minutesaftersymptomonset).Aquestionnairedevelopedtoassessdemographiccharacteristics,clinicalfactorsandpsychologicalfactors.Patientswereinterviewedwithin72hoursofadmissionto2hospitals.Results329consecutiveconfirmedSTEMIpatients(Meanage61years;72.5%men)withamedianPDof90minandapre-hospitaldelaytime170minwerestudied,PDwaslessthan1hoursin47.4%ofpatients,whilemorethan1hoursin52.6%,Inunivariateanalyses,patientswithshortPDwerewitnessonset,progresscourseofsymptom,severepain,deathanxiety,knowingAMIasadeadlydiseaseanditspresentation,takingthesymptomseriously.PatientswithlongerPDwereage≥65year,nocturnalonset,experiencedtheirsymptomsathome,gradualonset,’waitedtoseewhethersymptomsdisappeared’,’worriedabouttroublingothers’,’tookpainmedication’andpreinfarctionangina.Astepwisemultipleregressionanalysisfurthersuggestedthatthefollowinginde-pendentcontributorstoalatedecisiontoseekmedicalhelp(relativerisk,95%confidenceinterval):takingpainmedication(15.97;1.70～149.8),wantingtowaitandsee(6.46;1.92～21.74),notwantingtobotheranybody(6.42;2.87～14.34),preinfarctangina(2.73;1.20～6.19),age≥65years(2.51;1.15～5.48),gradualonset(2.40;1.05～5.44),severepain(0.38,0.17～0.85),witnessonset(0.27,0.10～0.70),takingsymptomsseriously(0.019;0.08～0.46).ConclusionsAge≥65years,gradualonset,witnessonset,severepain,preinfarctangina,emotionalresponsesandcopingstrategiesaretheindependentfactorsassociatedwithpatientdelayordecisiontimeinpatientswithAMI.Emotionalresponsesandcopin

简介：Furtherunderstandingofthepathphophisyology,advanceofthediagnosisinstrumentandrenovationoftheriskdelaminationstandardcanofferbettertherapyevidenceforthenon-ST-segmentelevationacutecoronarysyndrome(NSTE-ACS).Drugs,suchastrigeminyantiplateletdrug,prasugrel,fondaparinuxandbivalirudin,havebroughtgreatclinicaleffecttothehighriskpatients.SincetheresultoftheICTUStestannouncedandthedrugelutingballoondeveloped,wehavereachedthenewestrecognitionofhowtoselectachanceforinterventionandhowtopreventandcuretherestenosisofin-stent.

简介：目的评价ST-T改变与超声心动图(UCG)检查结果.方法对180例患者常规12导联记录ST-T改变进行统计分析,并与UCG检查对比.结果ST-T改变者中89例(49.4%)UCG示室间隔与左室后壁节段性运动减低,有的丧失运动或收缩期增厚;15例(8.3%)示主动脉硬化,主动脉内径增宽,运动僵硬,重搏波消失;9例(5%)示主动脉瓣钙化,回声增强,5例(2.78%)示左室腔假腱索;余72例未显示主动脉及心内结构异常.结论UCG比心电图对心肌缺血更敏感,室壁运动异常是心肌缺血的唯一指标.

简介：BackgroundThecombinationofglycoproteinⅡb/Ⅲainhibitorsandheparinhasnotbeencomparedwithbivalirudininstudiesspecificallyinvolvingpatientswithnon-ST-segmentelevationmyocardialinfarctionundergoingpercutaneouscoronaryintervention(PCI).Wecomparedthetwotreatmentsinthispatientpopulation.MethodsImmediatelybeforePCI,werandomlyassigned,inadouble-blindmanner,1721patientswithacutenon-ST-segmentelevationmyocardialinfarctiontoreceiveabciximabplusunfractionatedheparin(861patients)orbivalirudin(860patients).Thestudytestedthehypothesisthatabciximabandheparinwouldbesuperiortobivalirudinwithrespecttotheprimarycompositeendpointofdeath,largerecurrentmyocardialinfarction,urgenttarget-vesselrevascularization,ormajorbleedingwithin30days.Secondaryendpointsincludedthecompositeofdeath,anyrecurrentmyocardialinfarction,orurgenttarget-vesselrevascularization(efficacyendpoint)andmajorbleeding(safetyendpoint)within30days.ResultsTheprimaryendpointoccurredin10.9%ofthepatientsintheabciximabgroup(94patients)andin11.0%inthebivalirudingroup(95patients)(relativeriskwithabciximab,0.99;95%confidenceinterval[CI],0.74to1.32;P=0.94).Death,anyrecurrentmyocardialinfarction,orurgenttarget-vesselrevascularizationoccurredin12.8%ofthepatientsintheabciximabgroup(110patients)andin13.4%inthebivalirudingroup(115patients)(relativerisk,0.96;95%CI,0.74to1.25;P=0.76).Majorbleedingoccurredin4.6%ofthepatientsintheabciximabgroup(40patients)ascomparedwith2.6%inthebivalirudingroup(22patients)(relativerisk,1.84;95%CI,1.10to3.07;P=0.02).ConclusionsAbciximabandunfractionatedheparin,ascomparedwithbivalirudin,failedtoreducetherateoftheprimaryendpointandincreasedtheriskofbleedingamongpatientswithnon-ST-segmentelevationmyocardialinfarctionwhowereundergoingPCI.(FundedbyNycomedPharmaandothers;

简介：目的分析影响非ST段抬高心肌梗死（NSTEMI）预后的相关因素及有效的治疗策略。方眩收集2001年1月～2010年1月资料完整的NSTEMI患者206例，随访≥6个月，以随访6个月和2年的预后分别为近期和远期预后，记录心血管事件，包括主要终点事件（心源性死亡）和联合终点事件[心源性死亡和（或）非致死性心肌梗死]，应用Cox生存模型对影响预后的多因素进行分析。结果142例完成6个月随访，共发生心血管事件20例，其中心源性死亡16例（11．27％）、非致死性心肌梗死4例（2．82％）；93例完成2年随访，共发生心血管事件20例，其中心源性死亡15例（16．13％）、非致死性心肌梗死5例（5.38％）。影响患者班期预后的因素为年龄、心力衰竭、肾功能不全、阿司匹林，影响患者远期预后的因素为年龄、心力衰竭、肾功能不全、阿司匹林、早期PCI。结论NSTEMI患者预后不佳，年龄、心力衰竭、肾功能不全是最重要的危险因素，而阿司匹林是重要的保护因素，早期PCI可显著改善患者的远期预后。

简介：Toanalyzetheclinicalcharacteristicsof216patientswithnon-STsegmentelevationmyocardialinfarction(NSTEMI).MethodsAretrospectiveanalysiswasused.TwohundredandsixteenNSTEMIpatientsweredividedintotwogroups:①accordingtotheage:age<65yearsgroupandage≥65yearsgroup;②accordingtothrombolysisinmyocardialischemiatrial(TIMI)IIBriskstratificationscoringsystem:score<4groupand≥4group;③accordingtoserumcreatinine(sCr)level:sCrlevel≤178μmol·L-1groupand>178μmol·L-1group.Sevenhundredandeightysixacutemyocardialinfarction(AMI)patientsduringthesameperiodweredividedintoSTsegmentelevationmyocardialinfarction(STEMI)groupandNSTEMIgroup.Clinicalcharacteristicsofthepatientsinthetwogroupswerecompared.Results①ThenumberofNSTEMIpatientsinage≥65yearsgroupissignificantlygreaterthanthatinage<65yearsgroup.Studyrevealedthatthepatientsinage≥65yearsgroupwerewithoutchestpain,hadhypertension,dyslipidemia,atrialfibrillation,cardiacandrenaldysfunction(sCr>178μmol·L-1)andtriplevesseldisease.Fewerpatientsinthisgroupreceivedcoronaryarteryangiography(CAG),percutaneouscoronaryintervention(PCI)andcoronaryarterybypassgraft(CABG).Morenumberofdeathsinthisgroupcomparedwiththeage<65yearsgroup.②ThenumberofNSTEMIpatientsinTIMIscore>4groupissignificantlygreaterthanthatinTIMIscore<4group.Fourmajorcomplicationssuchasacuteleftventricularfailure,cardiogenicshock,seriousarrhythmiaanddeaths,increasedsignificantlyinTIMIscore>4groupcomparingwithTIMIscore≤4group.③Obviously,morenumberofelderlypatients,non-insulindependantdiabetesmellitus(NIDDM),patientswithcardiactroponinT(CTnT)>3.0ng·L-1anddeathsoccurredinsCr>178μmol·L-1group.④STEMIandNSTEMIpatientswerecomparedinsametimeframeasfollows:fewerNSTEMIpatientsandmoreelderlypatientshadnochestpain,NIDDM,hypert

简介：急性ST段抬高型心肌梗死(STEMI)再灌注治疗始终追求的目标为早期、完全、持续心外膜血管再通以及微血管灌注恢复,以降低死亡率、再梗死、缩小梗死范围及改善左室功能,是STEMI患者治疗的基石[1,2]。近年来由于国内外STEMI治疗区域网络建立及院前急救转运系统和再灌注策略的完善[3,4],使梗死相关动脉(IRA)得以早期开通,同时由于直接PCI、补救PCI、溶栓后常规PCI及辅助抗栓治疗完善而使其最大可能达到快速、完全和长期持续冠状动脉(冠脉)再通。

简介：<正>随着介入心脏技术的不断进展,对以ST-T改变为主的急性心肌梗死(AMI)心电图与冠状动脉病变之间关系有了新的认识。本文报告1例无明显ORS变化的AMI如下。

简介：目的探讨更年期女性动态心电图ST-T改变的临床意义。方法300例更年期女性（年龄45～58岁）分为45～49岁、50～54岁、55～58岁三个年龄组与300例同年龄段男性作对照行动态心电图检测。结果两性间动态心电图ST—T改变有显著差异性（P〈O．01），女性三个年龄组动态心电图ST—T改变无显著差异（P〉0．05）。结论更年期女性动态心电图ST—T改变多为功能性。治疗重点以调节内分泌及自主神经功能为主。

简介：目的探讨急诊经皮冠脉介入术（PCI）治疗急性ST段抬高性心肌梗死（STEMI）患者术后ST段回落的临床意义。方法入选2011年1月～2013年9月辽宁省人民医院心血管内科急诊PCI治疗的150例STEMI患者进行回顾性分析，根据术后1h内患者心电图检查ST段回落百分比是否＞50%分为A组84例（ST段回落百分比＞50%）和B组66例（ST段回落百分比≤50%），比较两组患者术前、术后24h的心肌酶谱指标、术后2周心功能指标及术后1年内心血管不良事件的发生率。结果术前及术后24hA组的肌酸激酶（CK）、肌酸激酶同工酶（CK-MB）、肌钙蛋白（cTnT）测定值均显著的低于对应时间点的B组患者（P＜0.05）；术前，A、B两组患者的左室射血分数（LVEF）值差异不具有统计学意义（P＞0.05），术后24h，A组患者LVEF值显著高于B组患者（P＜0.05）；术前及术后24hA组的左室舒张末期容积（LVEDV）测定值均显著的低于B组患者（P＜0.05）；术后1年A组患者的心血管不良事件累积发生率9.52%显著的低于B组患者的31.82%（P＜0.05）。结论急诊PCI术后ST段迅速回落（ST段回落百分比＞50%）的STEMI患者心功能及心肌酶谱指标恢复更好，远期不良心血管事件发生率更低。

简介：目的探讨急性心肌梗死（AMI）墓碑形”段抬高的临床意义。方法根据临床资料将28例心电图呈“墓碑样”改变的AMI患者作为观察组（A组），选取心电图ST段呈常态改变的AMI患者43例作为对照组（B组）。将两组患者的临床资料进行分析并作统计学处理。结果病变多发于前降支，除天门冬氨酸转氨酶（AST）、乳酸脱氢酶（LDH）外，心源性休克、AMI后心绞痛、严重心律失常、心力衰竭、≥3个并发症及病死率、肌酸激酶（CK）、肌酸激酶同功酶（CK—MB）A组与B组相比，差异有统计学意义（P〈0．01）。结论ST段呈墓碑样改变的AMI患者近期预后较凶险。