简介:目的探讨常规体表静息心电图Tv1(Tv2)>Tv5(Tv6)在冠心病诊断中的价值.方法110例住院行冠脉造影的患者,按造影结果分为冠心病组和非冠心病组,两组均多次记录常规十二导心电图,比较Tv1(Tv2)>Tv5(Tv6)综合征在两组间检出率的差异,并与心电图ST段压低指标相比,分析Tv1(Tv2)>Tv5(Tv6)综合征诊断冠心病的价值.结果Tv1(Tv2)>Tv5(Tv6)综合征的检出率在冠心病组和非冠心病组有显著差异.Tv1(Tv2)>Tv5(Tv6)诊断冠心病的敏感度为70.3%、特异度为66.6%,与ST段压低相比敏感性较高,但后者特异度高于Tv1(Tv2)>Tv5(Tv6).结论Tv1(Tv2)>Tv5(Tv6)综合征对诊断冠心病有一定价值,但特异性不高,应结合临床及其他心电图指标综合进行判断.
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.