【摘要】 目的对比分析常规心电图(ECG)和立体心电向量图(3D-VCG),评价3D-VCG在心肌梗死相关动脉(IRA)定位上的应用价值。方法 114例临床确诊心肌梗死患者,经冠状动脉造影,将冠状动脉单支完全闭塞或狭窄≥75%者,分成左前降支(LAD)、左回旋支(LCX)、右冠状动脉(RCA)共3个IRA组,分别分析其ECG和3D-VCG的分区定位特点。结果以3D-VCG心肌梗死诊断标准之前壁区定位LAD,高侧壁定位LCX,下壁定位RCA,阳性检出率高于常规ECG(分别为:91.7%比50%,75%比12.5%,70%比3.5%,均为P<0.01)。阴性检出率:LAD、LCX和RCA组3D-VCG显著低于ECG(2.7%比33.3%,2.1%比50%,0比30%,均为P<0.01)。结论 3D-VCG对心肌梗死IRA有定位诊断价值,且较常规ECG为优。更多还原

【Abstract】 Objective To evaluate the value of 3-dimension electrocardiography(3D-VCG) in localizing the infarction related artery(IRA) in myocardial-infarction(MI).Methods A total of 114 MI cases with coronary arteriography were divided into 3 IRA(artery occlusion≥75%) groups;36 cases in left anterior descending artery(LAD) group,48 cases in left circumflex artery(LCX) group and 30 cases in right coronary artery(RCA) group.3D-VCGs and ECG of each patients were analyzed.Results There was significant deference both in positive and negative detective rate between 3D-VCG and ECG positive detective rate;LAD group;91.7%vs.50%in anterior wall(P <0.01 );LCX group; 75%vs.12.5%in high lateral wall(P < 0.01 );RCA group;70%vs.6.7%in inferior wall(P < 0.01 );negative detective rate:The negative detectable rates of 3D-VCG in LAD,LCX and RCA groups were significantly lower than those of ECG(2.8%vs.33.3%,P <0.01;2.1%vs.50%,P <0.01;0 vs.30%,P <0.01).Conclusions In diagnosing and locating IRA,3D-VCG is somehow more accurate than routine ECG.更多还原