心电图对急性心肌梗死相关血管的预计价值

对385例急性心肌梗死患者作选择性冠状动脉造影。心电图定位为前壁心梗的相关血管89%是左前降支动脉(LAD),下壁心梗的相关血管76.4%是右冠状动脉(RCA)。阻塞发生于 LAD、RCA及左迥旋支动脉(LCX)近端的分别占67%、58%与78%。近端病变90%以上为重度或完全阻塞。在下壁心梗早期心电图出现心前导联 ST 段下移,是病变广泛的一项指标。     

心电图判断急性下壁心肌梗死相关动脉的价值

目的:探讨体表心电图改变在判断急性下壁心肌梗死相关动脉的价值.方法:根据冠状动脉造影结果将78例急性下壁心肌梗死患者分为右冠状动脉(RCA)组和左冠状动脉回旋支(LCX)组,比较2组患者的心电图改变.结果:①RCA组患者aVL导联ST段压低≥1 mm的发生率明显高于LCX组患者(92%:24%,P＜0.01);②RCA组患者aVL导联R/S比值明显低于LCX组[(2.7±0.4),(3.4±0.6),P＜0.01],③aVL导联ST段压低≥1 mm和R/S比值≤3判断急性下壁心肌梗死相关动脉为RCA的敏感性、特异性、阳性预测值和阴性预测值分别为92%、90%、96%、77%和86%、95%、98%、70%.结论:aVL导联ST段压低和R/S比值缩小是判断急性下壁心肌梗死病变动脉为RCA的良好指标.     

急性下壁心肌梗死Ⅱ、Ⅲ导联ST段比值与冠状动脉造影对照分析

目的探讨心电图对急性下壁心肌梗死相关冠状动脉梗死相关动脉及合并右心室梗死的判断价值。方法对照分析95例急性下壁心肌梗死入院时的心电图Ⅱ、Ⅲ导联ST段抬高比值及Ⅰ、aVL导联ST段偏移与冠状动脉造影梗死相关动脉的关系。结果95例患者中,74例右冠状动脉(RCA)阻塞所致者ST段抬高Ⅲ/Ⅱ>1、≤1分别为70例、4例;Ⅰ、aVL导联ST段抬高或等电位线4例,压低70例(P<0.05)。而21例左回旋支(LCX)阻塞所致者ST段抬高Ⅲ/Ⅱ>1、<1分别为4、17例。Ⅰ、aVL导联ST段抬高或等电位线17例、压低4例(P<0.05)。合并右心室梗死13例中,以Ⅲ/Ⅱ>1判断,11例合并右心室心肌梗死(P<0.05)。结论急性下壁心肌梗死梗死相关动脉以RCA病变为主,少部分为LCX病变。Ⅰ、aVL导联抬高或等电位线多见于LCX病变,Ⅰ、aVL导联ST段压低则对诊断RCA阻塞具有很高的价值。ST段Ⅲ/Ⅱ>1判定急性下壁心肌梗死合并右心室梗死有一定的价值。     

下壁急性心肌梗死患者心电图对梗死相关动脉定位的再评价

目的探讨ST段抬高型下壁急性心肌梗死(AMI)患者心电图对梗死相关动脉(IRA)定位的价值。方法分析76例ST段抬高型急性下壁心肌梗死患者心电图改变并与冠状动脉造影结果进行回顾性对比分析。结果①梗死相关动脉多为右冠状动脉(RCA),其次为左回旋支(LCX),分别为56例(73.7%)、20例(26.3%)。②患者心电图STⅢ↑/STⅡ↑>1、STaVL↓/STI↓>1对判断梗死相关动脉在RCA敏感性分别为87.5%、96.4%,特异性分别为85.0%、85.0%。STV3↓/STⅢ↑>1.2对判断梗死相关动脉为LCX的特异性为94.6%。③心电图STaVF↑+STV2↓>0对于判断梗死相关动脉为RCA的特异性、阳性预测值分别为90.0%、95.8%。④心电图V1～V3导联ST段压低之和与下壁导联ST段抬高之和的比值ST(V1～V3)↓/ST(inf)↑≤0.5对于判断相关动脉为RCA的敏感性、阳性预测值分别为78.6%、91.7%。⑤心电图STV3↓/STⅢ↑≤0与心电图STV1↑预测梗死动脉在RCA近端的敏感性分别为54.5%、86.4%,特异性分别为29.4%、88.2%。结论心电图STⅢ↑/STⅡ↑>1、STaVL↓/STI↓>1,STV3↓/STⅢ↑>1.2,STaVR↓≥0.05 mV预测IRA为RCA或LCX特异性较高;STV1↑预测IRA为RCA近段的敏感性、特异性较高;而STV3↓/STⅢ↑≤0预测RCA近段闭塞结果不理想。     

心电图预测急性下壁心肌梗死相关冠脉的研究

目的探讨心电图对急性下壁心肌梗死相关冠脉的预测价值。方法根据冠状动脉造影证实的梗死相关冠脉结果,将153例急性下壁心肌梗死患者分为两组:右冠状动脉(RCA)闭塞组106例,回旋支(LCX)闭塞组47例。对两组患者心电图不同导联典型心肌梗死图形的发生率及ST-T改变发生率进行分析。结果RCA组STaVL↓>STl↓①、STIII↑>STII↑②、①+②、STaVF+V2>0的发生率均明显高于LCX组(x2=14.23,29.86,p<0.01),敏感性分别为75.8%、87.2%、70.9%、84.8%,特异性分别为83.9%、85.1%、100%、100%。LCX组①②两项均不具备、STaVF+V2<0的发生率明显高于RCA组(x2=42.43,49.26,p<0.01),敏感性分别为83.7%和94.0%,特异性均为100%。结论心电图STaVL↓>STl↓①、STIII↑>STII↑②、①+②、STaVF+Ⅴ2>0与①②两项均不具备、STaVF+V2<0对判断急性下壁心肌梗死的梗死相关动脉是RCA或LCX和闭塞位置有高度特异性,有重要的预测价值。     

急性下壁心肌梗死患者心电图胸前导联ST段改变的临床意义

目的探讨急性下壁心肌梗死患者心电图胸前导联ST段改变与冠状动脉造影(CAG)所见冠状动脉病变部位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3组,ST段无变化组(47例),ST段抬高组(16例),ST段压低组(124例);所有患者均行CAG。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(RCA)近段闭塞(14例,82.3%),尤其是伴圆锥支动脉闭塞,与RCA中远端闭塞(2例,5.9%)比较差异有统计学意义(P0.01),且14例(73.7%)伴有右心功能不全和血流动力学障碍。下壁心肌梗死胸前导联ST段压低者可见于RCA、回旋支(LCX)闭塞及RCA、LCX闭塞与前降支(LAD)、对角支(D)病变的不同组合,其中LCX闭塞伴RCA病变者多表现为朐前ST V_4～V_6的压低,RCA闭塞伴LAD近端病变多有胸前ST V_1～V_6的压低,RCA伴D病变胸前ST V_1～V_3压低,与对照组比较差异有统计学意义(P0.05)。结论急性下壁心肌梗死合并胸前导联ST段抬高表明为RCA近段或丌口闭塞且多伴右心室心肌梗死和心功能不全;下壁心肌梗死伴胸前导联ST段压低提示为多支病变,ST V_1～V_3压低多伴有对角支严重狭窄,STV_1～V_6压低多伴有前降支的严重狭窄。     

急性下壁心肌梗死心电图ST段抬高Ⅲ导大于Ⅱ导对判断梗死相关动脉的意义

目的 探讨急性下壁心肌梗死心电图ST段抬高Ⅲ导大于Ⅱ导对判断梗死相关动脉的意义。方法 分析84例首发急性下壁心肌梗死病人心电图及冠状动脉造影的结果。结果 ST段Ⅲ/Ⅱ>1组中89%的病例心肌梗死相关动脉为右冠状动脉(RCA),ST段Ⅲ/Ⅱ≤1组中35%的病例为RCA,两组有显著差异,P<0.01。ST段Ⅲ/Ⅱ>1组中11%的病例为回旋支(LCX),ST段Ⅲ/Ⅱ≤1组中65%的病例为LCX,两组亦有显著差异,P<0.01。ST段Ⅲ/Ⅱ>1组在RCA为梗死相关动脉的54例病例中30%为RCA近段,48%为RCA中段,22%为RCA远段,ST段Ⅲ/Ⅱ>1对近中段的阳性预测值为78%,阴性预测值为38%。同时,在合并右心室心肌梗死中94%的病例ST段Ⅲ/Ⅱ>1,敏感性为94.1%,特异性为32.8%。结论 ST段Ⅲ/Ⅱ>1及ST段Ⅲ/Ⅱ≤1可分别作为判断RCA及LCX为梗死相关动脉的较为可靠的指标。     

急性心肌梗死时体表心电图对梗死相关动脉的判断

目的了解急性心肌梗死(AMI)的体表心电图对心肌梗死相关动脉(IRA)及其闭塞位置判断作用.方法对264例急性心肌梗死患者的心电图和冠状动脉造影资料进行回顾性对比分析.结果①下壁AMI时血管闭塞发生在右冠状动脉(RCA)74例(78.7%),左回旋支(LCX)20例(21.3%).Ⅰ、aVL导联ST段压低提示RCA为IRA的敏感性,特异性和阳性预测值分别为94.6%,70%和92.1%.ST段压低Ⅰ＜aVL提示RCA为IRA的敏感性,特异性和阳性预测值分别为83.8%,90%和96.9%.ST段抬高Ⅱ＜Ⅲ提示RCA为IRA的敏感性,特异性和阳性预测值分别为90.5%,90%和97.1%.ST段压低Ⅰ＜aVL和ST段抬高Ⅱ＜Ⅲ提示RCA为IRA的敏感性,特异性和阳性预测值分别为81.8%,100%和100%.非ST段压低Ⅰ＜aVL和非ST段抬高Ⅱ＜Ⅲ提示LCX为IRA的敏感性,特异性和阳性预测值分别为85%,100%和100%.13例合并右室心梗IRA均为RCA.②前间壁AMI时STⅠ、STaVL抬高,STⅡ、Ⅲ、aVF下降均不能提示IRA为LAD或RCA(P分别大于0.05).③前壁AMI时STⅠ、STaVL抬高,STⅡ、Ⅲ、aVF下降判断LAD近段闭塞的敏感性、特异性和阳性预测值分别为70.4%,59.3%,87%,95.7%和86.4%,94.1%.④广泛前壁AMI时STⅠ、STaVL抬高,STⅡ、Ⅲ、aVF下降判断LAD近段闭塞的敏感性、特异性和阳性预测值分别为100%,95.5%,85.7%,100%和97.8%,100%.结论下壁、前壁和广泛前壁AMI时体表心电图对心肌梗死相关动脉(IRA)及其闭塞位置判断具有预测价值.     

急性下壁心肌梗死ST段改变特征的分析

目的结合冠状动脉造影结果,分析急性下壁心肌梗死患者心电图ST段改变的特征,探讨梗死相关动脉(IRA)的判定。方法选择197例急性下壁心肌梗死,其中右冠状动脉近段闭塞69例、右冠状动脉远段闭塞80例、回旋支(LCX)闭塞48例,患者胸痛发作12h内的心电图。结果三组以及导联间比较,右冠状动脉(RCA)闭塞可出现STaVR压低(p<0.05),同时STⅢ↑>STⅡ↑(p<0.05),STaVL压低较STI明显(p<0.05),与RCA闭塞的部位无关。结合三者,其预测RCA闭塞的敏感性84%、特异性90%、阳性预测值96%、阴性预测值60%。结论急性下壁心肌梗死早期除下壁导联ST抬高外,STⅢ↑>STⅡ↑、STaVL↓>STⅠ↓、STaVR↓提示RCA阻塞,是区别RCA闭塞或LCX闭塞的关键指标,对预后和决定是否采取血管重建治疗具有重要的参考价值。     

急性心肌梗死直接冠状动脉成形术后再灌注心律失常分析

目的 分析急性心肌梗死直接冠脉成形术后严重再灌注心律失常发生的状况，探讨其预防和紧急治疗方法。方法 行直接经皮冠状动脉成形术的急性心肌梗死患者245例，根据梗死相关动脉分成三组，LAD组：126例；RCA组：97例；LCX组：22例。统计各组经皮冠状动脉成形术后再灌注心律失常发生的状况。结果 共151例患者发生严重的再灌注心律失常，发生率为61．6％；加速性室性自主心律发生率最高(22．0％)，与梗死相关动脉无关；其次是室性早搏(19．2％)，以LAD组最高(27．8％)。RCA组缓慢性心律失常(窦缓、窦性停搏、高度房室传导阻滞)发生率(35．1％)显著高于LAD组(3．9％)和ICX组(22．7％)：LCX组各种再灌注心律失常发生率界于LAD组和RCA组之间。结论 急性心肌梗死直接冠脉成形术后严重心律失常总的发生率较高，心律失常的类型与梗死相关动脉有明确的相关性。     

心电图诊断急性下壁，前壁心肌梗塞相关动脉的价值

目的：分析急性下壁、前壁心肌梗塞患者心电图表现及梗塞相关动脉的分布特点,评价心电图诊断急性下壁、前壁心肌梗塞相关动脉的价值。方法：对26例急性下壁心肌梗塞、29例急性前壁心肌梗塞患者的心电图和冠状动脉造影资料进行回顾性比较分析。结果：急性下壁心肌梗塞（26例）的梗塞相关动脉为右冠状动脉（RCA）者19例（73％）。回旋支（LCX）6例（23％）;急性前壁心肌梗塞（29例）的梗塞相关动脉为前降支（LAD）者26例（90％）;下壁心肌梗塞相关动脉为RCA的19例中Ⅱ、Ⅲ,aVF导联ST段上移18例（94％）,STⅢ↑／STⅡ↑〉1者16例（84%）。结论：急性下壁、前壁心肌梗塞的心电图表现与梗塞相关动脉有关,有较高的临床诊断价值。     

Predictive Value of Admission Electrocardiogram For Multivessel Disease in Acute Anterior and Anterior‐Inferior Myocardial Infarction

Background: Our aim was to investigate the correlation between admission ECG and coronary angiography findings in terms of predicting the culprit vessel responsible for the infarct or multivessel disease in acute anterior or anterior‐inferior myocardial infarction (AMI). Methods: We investigated 101 patients with a diagnosis of anterior AMI with or without ST‐segment elevation or ST‐segment depression in at least two leads in Dll, III, aVF. The patients were classified as those with vessel involvement in the left anterior descending (LAD) coronary artery and patients with multivessel disease. Vessel involvement in LAD + circumflex artery (Cx) or LAD + right coronary artery (RCA) or LAD + Cx + RCA were considered as multivessel disease. Thus, (a) anterior AMI patients with reciprocal changes in inferior leads, (b) anterior AMI patients with inferior elevations, (c) all anterior AMI patients according to the ST‐segment changes in the inferior region were analyzed according to the presence of LAD or multivesssel involvement. Results: Presence of ST‐segment depression in aVL and V6 was significantly correlated with the presence of multivessel disease in anterior AMI patients with reciprocal changes in the inferior leads (P = 0.005 and P = 0.003, respectively). No statistically significant difference between the leads were detected in terms of ST‐segment elevation in predicting vessel involvement in the two groups of anterior AMI patients with inferior elevations. When all the patients with anterior AMI were analyzed, the presence of ST‐segment depression in leads aVL, V4, V5 and V6 were significantly associated with the presence of multivessel disease (P = 0.035, P = 0.010, P = 0.011, P = 0.001, respectively). Conclusions: The presence of ST‐segment depression in anterolateral leads in the admission ECG of anterior AMI patients with reciprocal changes in inferior leads was associated with multivessel disease.     

心电图预测急性下壁心肌梗死罪犯血管的价值

目的 探讨体表心电图不同指标对急性下壁心肌梗死患者罪犯血管的预测价值.方法 对73例急性下壁心肌梗死患者的入院心电图和冠状动脉造影资料进行回顾性分析,寻找可以预测罪犯血管[即梗死相关动脉(IRA)]的心电图改变.结果 73例急性下壁心肌梗死患者中右冠状动脉(RCA)闭塞者59例(81％),左回旋支动脉(LCx)闭塞者1...     

Differentiating the infarct-related artery on initial electrocardiogram in single or multi-vessel disease in acute inferior myocardial infarction and evaluating involvement of vessels using correspondence analysis

Initial electrocardiography changes were compared prospectively with the findings of coronary angiography to predict the infarct-related artery (IRA) in cases of single- and multi-vessel disease and to demonstrate the relationship between other coexisting coronary involvements and IRA in patients who presented with acute inferior myocardial infarction (AMI). ST elevations or depressions of at least 1 mm (0.1 mV) were evaluated in the leads I, aVL, and V1-V6. Of the 160 patients hospitalized due to inferior AMI, 153 (96%) underwent coronary angiography using standard methods. The angiograms were screened for stenotic lesions using quantitative coronary angiography to confirm significance, which was considered >50% vessel lumen diameter reduction. Among single-vessel involvements, the IRA was either the circumflex artery (Cx) or right coronary artery (RCA). In conditions in which IRA was detected as either Cx or RCA, 1-, 2-, and 3-vessel involvements were also detected. Correspondence analysis was performed to show the vessel involvements accompanying IRA. Compared with patients with IRA as RCA, the presence of ST depressions in the leads V1 or V2 and aVL were more frequently seen in patients with IRA as Cx (p=0.000, p=0.015, respectively). Among all vessel involvements in which IRA was either Cx or RCA, a ST-segment depression in leads V1 or V2 (p=0.000) and aVL (p=0.000) and a ST-segment elevation in lead I (p=0.005) were considered to be significant for Cx, and a ST-segment depression in lead I for RCA involvement (p=0.010). According to correspondence analysis, the most frequent single-vessel involvement seen in inferior AMI was RCA; when IRA was RCA, a multi-vessel involvement included RCA and Cx; and when IRA was Cx, a single-vessel involvement included the left anterior descending (LAD) artery most frequently, and RCA+LAD less frequently (p=0.000). In inferior AMI, RCA was the most common IRA; however, the possibility of multi-vessel disease is increased when Cx is found to be the IRA. In patients presenting with inferior AMI, the presence of ST-depression in the leads aVL and V1-2 is a sensitive finding that indicates Cx stenosis rather than RCA stenosis and is not affected by coexisting other coronary artery involvements.     

Relation between electrocardiography and coronary angiography findings in the infarct stage

One hundred and fifty-two patients underwent cardiac catheterization and coronary arteriography within 6.3 +/- 6.0 hours from onset of acute myocardial infarction. All had a standard 12-lead electrocardiogram recorded within 1.5 hours of cardiac catheterization. The electrocardiographic abnormalities present were correlated with the infarct related artery as determined by coronary arteriography. ST segment elevation was the most common finding in patients with the left anterior descending (LAD), or right coronary artery (RCA) as the infarct related artery. ST segment depression was the most common abnormality in patients with left circumflex artery (CX) as the infarct related artery. A typical pattern of anterior acute myocardial infarction was seen in 93% of all patients with the LAD as the infarct related artery. A typical pattern of acute inferior myocardial infarction was seen in 53% of all patients with RCA or CX narrowing taken as one group. The pattern of true posterior or posterolateral wall acute myocardial infarction in the absence of typical changes in the inferior leads was highly specific and predictive of CX narrowing. In contrast, the pattern of an inferior wall myocardial infarction, in the absence of true posterior or lateral wall changes, was highly specific and predictive of right coronary artery narrowing. Fifty-six percent of patients with CX artery as the infarct related artery presented with non-classical electrocardiographic abnormalities. The electrocardiographic pattern in patients with subtotal occlusions were similar to those of patients with total occlusions. Thus the electrocardiogram obtained in the first few hours of acute myocardial infarction is reliable in localizing the LAD as the infarct related artery.(ABSTRACT TRUNCATED AT 250 WORDS)     

心电图对老年急性下壁心肌梗死冠状动脉病变部位的预测价值

目的　探讨急性下壁心肌梗死心电图与冠状动脉病变的关系 ,以揭示体表心电图对梗死相关动脉及病变节段的预测价值。方法　对 15 6例老年急性下壁心肌梗死患者的体表心电图和冠状动脉造影资料进行对比分析。结果　梗死相关动脉为右冠状动脉占 79.5 % ,左回旋支占 2 0 .5 %。单纯急性下壁心肌梗死病变节段多发生在第一右心室支开口以远 (77.6 % ) ,合并右心室心肌梗死病变节段多发生在第一右心室支开口前 (87% )。STⅢ 抬高 /STⅡ 抬高 >1,STⅠ、aVL下移≥ 1mm ,提示右冠状动脉为梗死相关动脉的敏感性分别为 87.9%、89.5 % ,特异性分别为 84 .4 %、81.2 % ,阳性预告值分别为 95 .6 %、94 .8% ,两者差异无显著性意义 (P >0 .0 5 )。ST段V1、V2 下移≥ 1mm ,提示左回旋支为梗死相关动脉的敏感性 ,特异性和阳性预告值分别为 84 .4 %、91.9%、73.0 %。结论　急性下壁心肌梗死时心电图对判断梗死相关动脉及病变节段有重要的预测价值     

常规心电图在心肌梗死诊断中的价值

目的 在心肌梗死患者中，观察心电图改变与梗死相关冠脉(IRA)病变之间的相关性。方法 51例入选分析。所有病例均接受冠脉造影。结果 以左前降支(LAD)为梗死相关冠脉(IRA)，单次梗死者，最常累及的导联是V2导联，无论单支病变还是双支和三支病变，部分病例都累及右胸导联和下壁导联；以右冠(RCA)或左回旋支(LCX)为IRA，均可累及下壁和右胸导联，但LCX可累及高侧壁或侧壁。结论 在心肌梗死患者中，分析常规12导联心电图，有助对冠脉病变的推测，在此基础上加选用导联，能更精确推测冠脉病变。     

Out-of-hospital ventricular fibrillation in patients with acute myocardial infarction: coronary angiographic determinants

OBJECTIVES: The study intended to compare the acute coronary anatomy of patients with acute myocardial infarction (AMI) complicated by out-of-hospital ventricular fibrillation (VF) versus patients with AMI without this complication. BACKGROUND: More than half of the deaths associated with AMI occur out of the hospital and within 1 h of symptom onset. The angiographic determinants of out-of-hospital VF in patients with AMI have not been investigated in detail. METHODS: Acute coronary angiographic findings of 72 consecutive patients with AMI complicated by out-of-hospital VF were compared with findings from 144 matched patients with AMI without this complication. RESULTS: Patients with an acute occlusion of the left anterior descending coronary artery (LAD) or left circumflex coronary artery (LCx) had a higher risk for out-of-hospital VF compared with patients with an acute occlusion of the right coronary artery (RCA) (odds ratio and 95% confidence interval, respectively, 4.82 [2.35 to 9.92] and 4.92 [2.34 to 10.39]). With regard to extent of coronary artery disease (CAD), the location of the culprit lesion in the coronary arteries (proximal vs. mid or distal), the flow in the infarct related artery (IRA), the presence or absence of collaterals to the IRA and chronic occlusions, there were no differences between the two groups. CONCLUSIONS: Acute myocardial infarction due to occlusion in the left coronary artery (LCA) is associated with greater risk for out-of-hospital VF compared to the RCA. The location of occlusion within LCA (LAD, LCx, proximal or distal), amount of myocardium at risk for necrosis and extent of CAD are not related to out-of-hospital VF.     

Single vessel disease of the anterior interventricular branch as a cause of combined anterior and posterior wall infarct in comparison with 2-vessel disease of the RIVA and RCA

Only few studies deal with the problem of an isolated stenosis of the left anterior descending coronary artery (LAD) leading to a combined anterior and inferior myocardial infarction in the ECG and VCG. In the present study patients with electrocardiographic signs of anterior and inferior myocardial infarction and either one-vessel disease of the LAD branch (n = 27; group I) or two-vessel disease including the LAD and the right coronary artery (RCA) (n = 29; group II) were investigated. Due to the anterior myocardial infarction present in all patients, unequivocal signs of posterior and posterolateral infarct location were missing in the ECG and VCG. There was a distinct variability with regard to Q-wave duration and amplitude in the inferior leads of the ECG and of the Q/R-relation in the scalar lead Y of the VCG (Frank-leads) in patients with isolated LAD disease when compared to those with combined LAD and RCA disease, but no reliable parameter was found in the ECG and VCG which allowed to allocate patients to one of the two groups. On the other hand, there were significant differences in hemodynamics and left ventricular function between the two groups. Group I patients showed a significantly higher left ventricular ejection fraction (mean 49 +/- 15%) than patients with two-vessel disease (group II) (mean 42 +/- 12%) (p less than 0.05). Left ventricular end-diastolic pressures at rest (13 +/- 7 mm Hg).(ABSTRACT TRUNCATED AT 250 WORDS)     

体表心电图预测梗死相关动脉及部位的敏感性和特异性

目的总结体表心电图（ECG）判断ST段抬高心肌梗死（STEMI）患者的梗死相关动脉（IRA）的流程,确定其敏感性、特异性和准确性。方法入选896例STEMI患者。根据公认的ECG判断标准,制订相应流程,判断IRA及其具体部位,并与即刻冠状动脉造影对比,确定流程的敏感性、特异性和准确性。结果判断左主干病变的敏感性为100%、特异性99%和准确性99%;判断前降支病变的敏感性、特异性和准确性分别为99%、99%和99%,其中近段为84%、90%和88%,中远段为57%、94%和88%;判断回旋支病变的敏感性、特异性和准确性分别为64%、95%和91%;判断右冠状动脉病变的敏感性、特异性和准确性为89%、92%和91%,其中近段为51%、96%和88%,中远段为68%、92%和85%。结论本研究的流程可以准确判断左主干、前降支和右冠状动脉近段病变,但区分回旋支和右冠状动脉中远段病变时有一定限度。