QRS波群形态对急性心肌梗死患者心功能和预后的影响

目的通过对急性ST段抬高心肌梗死(STEMI)患者入院时心电图QRS波群变化进行缺血分级,探讨缺血分级的临床意义。方法 223例STEMI患者根据入院时心电图QRS波群变化进行缺血分级:2级缺血组(134例):ST段抬高但QRS波终末部无改变;3级缺血组(89例):除ST段抬高外,QRS波终末部扭曲且常伴R波增高与S波消失。两组患者在发病12h内均行溶栓治疗,观察心电图ST段变化;梗死后2w行99m锝-甲氧基异丁基异腈(99mTc-MIBI)心肌灌注断层显像(SPECT)和99m锝-红细胞(99mTc-RBC)心血池显像,测定心肌梗死面积和心功能;统计2组患者住院期间并发症的发生率。结果入院时和溶栓后2h,3级缺血组ST段抬高的幅度(∑ST)均显著大于2级缺血组(P0.01),溶栓后2h,ST段回降率显著低于2级缺血组(P0.01);3级缺血组肌酸激酶同工酶(CK-MB)峰值显著高于2级缺血组(P0.01),心肌梗死面积大于2级缺血组(P0.05),左室射血分数低于2级缺血组(P0.05);两组患者严重心律失常、心力衰竭或心源性休克、再梗死的发生率和住院病死率均无显著性差异,但3级缺血组有高于2级缺血组的趋势。结论入院时心电图呈3级缺血的急性STEMI患者溶栓后易于出现ST段回降不良,导致心肌梗死面积大,心功能和预后差,需要采取更加积极的治疗措施。     

QRS终末扭曲对急性ST段抬高型心肌梗死患者病情及预后的评估价值

目的探讨QRS终末扭曲对急性ST段抬高型心肌梗死(STEMI)患者病情及预后的评估价值。方法选择2016年6月至2017年6月于湖北省第三人民医院心功能科收治的STEMI患者139例为研究对象,按心电图特征将患者分为QRS终末扭曲组(n=61)、非QRS终末扭曲组(n=78),对两组患者的一般临床资料(性别、年龄、合并症、心肌梗死位置、病程、溶栓治疗比例、ST段抬高导联数、QRS积分、心肌酶、肌酸激酶、左室射血分数)以及预后指标(心血管事件发生率、死亡率、Killip心功能分级)进行比较。结果两组患者一般资料比较,在性别、合并症、心肌梗死位置、溶栓治疗比例、ST段抬高导联数目等方面无显著差异(P0.05)。QRS终末扭曲组患者年龄、病程、QRS积分、心肌酶和肌酸激酶水平均高于非QRS终末扭曲组,而左室射血分数低于非QRS终末扭曲组(P0.05)。QRS终末扭曲组患者的不良心血管事件发生率和死亡率均高于非QRS终末扭曲组,Killip心功能Ⅲ级和Ⅳ级患者比例高于非QRS终末扭曲组,差异有统计学意义(P0.05)。结论通过评估STEMI患者QRS波形扭曲程度,可实现对STEMI患者的病情及预后效果的判断。     

QRS波终末改变在STEMI危险分层中的应用

目的 对急性ST段抬高心肌梗死(STEMI)患者心电图QRS波终末改变情况、危险分层情况探讨.方法 选取我院2019年3月至2020年3月接受检查的STEMI患者76例,均进行心电图检查,根据有无QRS波终末改变分为对照组(n=48),观察组(n=28).分析各危险分层患者QRS波终末部分改变患者的检出情况、比较两组各...     

心电图缺血分级与急诊PCI术后心血管事件

目的心电图缺血分级(GI)已被证实可以预测急性ST段抬高型心肌梗死(STEMI)溶栓患者的预后,但尚不清楚心电图缺血分级对急诊经皮冠状动脉介入术(PPCI)的STEMI患者院内心血管事件的预测价值,本研究旨在探讨初始心电图缺血分级对已接受PPCI的STEMI患者住院期间心血管事件的影响。方法本研究纳入2008年7月至2011年8月在本中心诊断为STEMI并且接受PPCI的患者188例。患者按心电图表现分为两组:2级缺血组(GI2,ST段抬高不伴有QRS终末部分扭曲)和3级缺血组(GI3,在ST段≥2个相邻导联抬高伴有QRS终末部分扭曲)。观察终点为院内心血管事件(死亡、非致命性再次心肌梗死、心力衰竭和恶性心律失常)。结果 GI3组患者心律失常发生率、心力衰竭或者心源性休克等心血管事件的发生率均高于GI2组,差异有统计学意义。结论尽管已经接受急诊经皮冠状动脉介入治疗,初始心电图3级缺血仍然是STEMI患者住院期间心血管事件的独立预测因子。     

终末QRS变形与ST段测量估测急性前壁心肌梗死面积以及溶栓疗效的临床价值

利用SelvesterQRS计分系统,比较ST段测量与QRS终末变形对急性前壁心肌梗死(简称心梗)患者最后梗死面积和溶栓治疗效果的影响。选择644例第一次急性前壁心梗患者,其中398例接受溶栓治疗,246例未接受溶栓治疗。从入院时首次稳定心电图上估计ST段抬高的导联数目、ST段抬高的幅度(∑ST)及QRS终末形态。根据QRS终末变形存在与否将患者分为两组:QRS终末变形(QRS+)组,QRS终末无变形(QRS-)组。利用修改的SelvesterQRS计分系统,从出院前心电图上估计最后梗死面积。结果:接受与未接受溶栓治疗者QRS+组∑ST、ST段抬高导联数大于QRS-组,差异有显著性(P<0.05)。在QRS-和QRS+者,溶栓治疗均能减少Selvester计分;但最后梗死面积的减少仅在QRS-的患者有意义(P<0.01)。ST段抬高的幅度与最后梗死面积之间无相关性;ST段抬高导联数仅与溶栓治疗者的最后梗死面积有关(r=0.25141,P≤0.05)。溶栓组QRS+者无复灌流率较QRS-者高。结论:QRS终末变形较ST段测量能更好地估测急性前壁心梗患者的最后梗死面积和溶栓治疗的效果。     

临床心电图ST段抬高的识别

<正>临床工作中,患者心电图检查往往可见ST段抬高,故对此现象应有全面、客观的认识和诠释,才能做到精准医疗。1定义ST段指自QRS波终末至T波开始之间的一段。J点指QRS波终末至ST段开始的一点。ST段的偏移往往是测量J点的偏移,并参考TP段与PR段。2急性ST段抬高型心肌梗死(STEMI)2.1心电图特征根据2012年ESC/ACCF/AHA/WHF     

碎裂QRS波与急性心肌梗死急诊介入治疗后ST段回落不良的关系

目的研究碎裂QRS波与急性心肌梗死急诊介入治疗后ST段回落不良的关系。方法选取急诊介入治疗急性心肌梗死患者90例,根据心电图有无破碎QRS波分为观察组(有破碎QRS波,n=50)和对照组(无破碎QRS波,n=40)。分析两组患者的心电图参数、实验室指标并统计Gensini评分与ST段回落率。结果有破碎QRS波患者心电图参数及肌酸激酶同工酶(creatine kinase,MB Form,CK-MB)、肌酸激酶(creatine kinase,CK)、肌钙蛋白(cardiac troponin I,c Tn I)等实验室指标和临床特征均显著高于无破碎QRS波患者,多因素回归分析结果显示,f QRS时限增量、术前f QRS导联数、c Tn I与术后ST段回落不良独立相关。结论 QRS碎裂波与行急诊介入治疗的ST段抬高型心肌梗死患者术后ST回落不良有关,急诊PCI术前心电图出现f QRS能够作为ST段回落不良的预测指标。     

碎裂QRS波在急性冠状动脉综合征中的诊断作用

目的:研究碎裂QRS波(FQRS)在急性冠状动脉综合征(ACS)中的作用。方法:入选我院84例确诊为ACS的住院患者,分为ST抬高性心肌梗死(STEMI)组及非ST抬高性ACS(NSTE-ACS)组。观察FQRS波有无。冠状动脉造影结果行Gensini系统评分。超声心动图检查左室收缩及舒张末期内径,计算左室射血分数。测定心肌钙蛋白和肌酸激酶同工酶(CK-MB)。结果:FQRS波与Gensini积分和CK-MB相关;FQRS波在STEMI组阳性率高于NSTE-ACS组(91.4%∶75.5%,P=0.051);FQRS波在ACS中的阳性率为82.14%。结论:FQRS波可以作为ACS的诊断指标。     

ST-T改变在鉴别窄QRS波心动过速中的价值

为评价ST T改变在鉴别窄QRS波心动过速中的价值 ,用SPSS分析 12 4例窄QRS波心动过速患者体表 12导联心电图的ST T改变 ,其中房室折返性心动过速 (AVRT) 72例 ,房室结折返性心动过速 (AVNRT) 5 2例。结果 :AVRT组Ⅰ aVL导联ST段压低幅度 (0 .10± 0 .0 7mV)大于AVNRT组 (0 .0 6± 0 .0 6mV) ,P =0 .0 0 2 ;AVRT组V1导联T波幅度 (0 .14± 0 .19mV)大于AVNRT组 (0 .0 1± 0 .13mV) ,P <0 .0 0 1。鉴别窄QRS波心动过速的预测指标为QRS波终末改变 (R2 =0 .6 0 4 ,P <0 .0 0 1)、V1导联T波方向 (R2 =0 .2 4 9,P <0 .0 0 1)、V1导联T波幅度 (R2 =0 .180 ,P <0 .0 0 1)、Ⅰ aVL导联ST段压低 (R2 =0 .0 4 3,P <0 .0 0 1)。QRS波终末改变阳性预测AVNRT的特异性 98.6 % ,敏感性 75 .0 % ;V1导联T波正向预测AVRT的特异性 6 7.3% ,敏感性 81.9%。结论 :ST T改变有助于鉴别窄QRS波心动过速。QRS波终末改变是鉴别窄QRS波心动过速的较强预测指标 ;V1导联T波方向与幅度、Ⅰ aVL导联ST段压低是鉴别窄QRS波心动过速的较弱预测指标。     

急性ST段抬高型心肌梗死QRS波终末变形与冠状动脉病变程度的关系

目的探讨急性ST段抬高型心肌梗死(ST-segment elevation myocardial infarction,STEMI)患者心电图QRS波终末变形与冠状动脉病变程度的相关性。方法根据入院心电图将STEMI患者(n=80)分为QRS波终末变形阳性(3级缺血)组、QRS波终末变形阴性(2级缺血)组。两组均行冠状动脉介入治疗,以冠状动脉病变狭窄程度SYNTAX评分,分为高分组(≥22分)、低分组(22分)。结果 3级缺血组29例、2级缺血组51例,其中高分组27例、低分组53例。3级缺血组SYNTAX评分明显高于2级缺血组,差异有统计学意义[(20.2±8.3)分vs.(13.5±6.8)分,P0.001)]。高分组心电图3级缺血现象明显多于低分组,差异有统计学意义(50.4%vs.20.9%,P0.001)。多因素回归分析显示,3级缺血(P0.001)、年龄(P=0.017)、糖尿病(P=0.014)、前壁心肌梗死(P=0.012)是冠状动脉病变SYNTAX评分高的独立预测因素。结论 QRS波终末变形阳性可能与冠状动脉病变严重程度相关。3级缺血冠心病患者冠状动脉SYNTAX评分高可能有助于解释3级缺血与预后差的联系。对STEMI患者以心电图3级缺血来预测冠状动脉高SYNTAX评分,可能有助于选择最合适的血运重建策略。     

Prognostic significance of the distortion of terminal portion of QRS complex on admission electrocardiogram in ST segment elevation myocardial infarction

BackgroundECG on admission has been used in predicting prognosis and risk stratification in ST segment elevation acute myocardial infarction (STEMI).ObjectiveTo analyze the admission ECG in STEMI based on abnormality observed in terminal portion of QRS and its correlation to hospital mortality.Method160 consecutive patients of STEMI were classified into subjects without (Group I) and with distortion of terminal QRS (Group II), Pattern A – Emergence of J point at ≥50% of the R wave amplitude in leads with qR configuration or Pattern B – Absence of the S waves, in leads with Rs configuration in two consecutive leads.ResultsOut of 160 patients of STEMI, 69 (43.1%) had distortion of QRS. There were 13 deaths (8.1%). Hospital mortality was found to be significantly more in subjects with distortion than those without (15.9% V/S 2.1%, p < 0.001). Patients with QRS distortion tended to have larger infarction as assessed by Killip class on admission (p < 0.05), anterior location of MI (p < 0.01) and presence of significant Q waves in leads with ST segment elevation (p < 0.0001).With multiple logistic regression analysis using hospital mortality as a dependent variable and all studied risk factors as independent variables, QRS distortion on admission ECG was the only variable found to be statistically significant (Adjusted OR = 7.161, p < 0.05).ConclusionECG on admission is a simple, cheap, universally available investigation that can predict the short term prognosis in STEMI and would help in deciding which patients should go for other myocardial revascularization procedures.     

血栓抽吸对急性ST段抬高心肌梗死患者的疗效

目的：探讨急性 ST 段抬高心肌梗死（STEMI）患者行急诊冠脉介入治疗（PCI）中使用血栓抽吸的临床疗效及对预后的影响。方法：STEMI 患者105例,其中应用血栓抽吸＋PCI 治疗34例（血栓抽吸＋PCI 组）,接受常规 PCI 治疗71例（常规 PCI 组）,比较两组患者术后血流恢复及心功能指标的变化以及术后1年内主要不良心血管事件（MACE）及再入院情况。结果：与常规 PCI 治疗组相比,血栓抽吸＋PCI 组血流恢复后的肌酸激酶同工酶[CK-MB,（236.62±133.00）ng/ml 比（186.47±69.20）ng/ml]、肌酸激酶（CK）[（2833.39±198.70）ng/ml 比（2129.59±199.40）ng/ml]峰值及 CK-MB [（12.38±6.70）h 比（9.65±3.90）h],CK [（12.80±8.10）h 比（9.68±3.50）h]峰值时间均显著降低（P 均＜0.05）;随访1年 MACE 事件发生率（19.7％比8.8％）及再入院率（66.2％比50.0％）有下降趋势,但无统计学意义（P ＞0.05）。两组血流恢复与心功能的差异无统计学意义（P ＞0.05）。结论：急诊 PCI 术中血栓抽吸有助于减轻病情,使酶学水平显著下降,可能还改善预后。     

The relationship between terminal QRS complex distortion and early low dose dobutamine stress echocardiography in acute anterior myocardial infarction

Although the damage in myocardial infarction has been demonstrated to be related with the magnitude and number of ST elevation, its relation with terminal distortion of QRS is unclear. The relationship between terminal QRS distortion in ECGs on admission and the results of early low dose dobutamine stress echocardiography (LDSE) performed 6 +/- 2 days later was investigated. Patients admitted to our clinic within the first six hours of their chest pain and without a prior infarction diagnosis were divided into two groups based on the admission electrocardiogram as the absence (QRS-, n = 33) or presence (QRS+, n = 29) of distortion of the terminal portion of the QRS in > or = 2 leads (QRS+; J point at > 50% of the R wave amplitude in lateral leads or presence of ST elevation without S wave in leads V1-V3). There were no significant differences between the groups with respect to thrombolytic therapy or reperfusion criteria. During LDSE, the infarct zone wall motion score index (WMSI) in the QRS- group was significantly decreased relative to baseline (from 2.93 +/- 0.65 to 2.37 +/- 0.84, P = 0.02), and it was significantly different compared with WMSI in the QRS+ group (P = 0.005). Improvement of akinetic regions to hypokinetic regions in the infarct zone (IZ) was found to be 33.5% (44/131) in the QRS- group and 17.8% (27/151 P = 0.004) in the QRS+ group. Furthermore, 55.1% (10/29) of the patients in the QRS+ group and only 18.1% (6/33) of those in the QRS- group did not respond to LDSE (P < 0.05). In multiple logistic regression analysis, while there was no relationship between good left ventricular functions (WMSI < 2) and terminal QRS distortion under basal conditions (P = 0.07), an independent relation was observed to exist between them after LDSE (P = 0.03, OR 4.48, 95% CI, 1.13-17.7). Moreover, plasma CK levels were higher in the QRS+ group (P = 0.03), whereas the ejection fraction was worse (P = 0.01). In both groups, there was no correlation between the Selvester score and left ventricle WMSI at baseline, but this correlation was significantly improved with LDSE (QRS-; r = 0.39 P = 0.02 and QRS+; r = 0.44 P = 0.01) The viability in the IZ is relatively less in those patients with terminal QRS distortion observed in their ECG on admission. This simple classification would be useful in predicting left ventricular function at the time of discharge.     

The Initial Electrocardiographic Pattern in Acute Myocardial Infarction

Background: The ECG is the most widely used accessory for early diagnosis and risk stratification of patients with acute myocardial infarction (AMI). Previous studies have concentrated on the association between either the number of leads with ST segment deviation (elevation and depression) or the total amount of ST segment elevation and/or depression and prognosis. However, the results are conflicting. Methods: A different method is to use the grades of ischemia as an estimate of infarct or size and prognosis. Grade I ischemia is defined as tall peak T waves with < 0.1 mV ST segment elevation; grade II as ST segment elevation with positive T waves, without distortion of the terminal portion of the QRS; and grade III as ST segment elevation, positive T waves, and distortion of the terminal portion of the QRS. Grade III ischemia on the admission ECG is associated with larger final infarct size and increased mortality. Results: In patients with inferior wall AMI, especially those with prior infarction, the pattern of precordial ST segment depression is even more important and maximal ST depression in V4-V6 is associated with high mortality. Moreover, meticulous interpretation of the initial ECG pattern provides information about the probable site of the culprit obstructive coronary lesion. Conclusion: Thus, the admission ECG of AMI can assist not only in diagnosis, but also in estimation of infarct size, correlation with the underlying coronary anatomy and risk stratification.     

左回旋支动脉阻塞相关的心肌梗死的临床特征

目的：探讨左回旋支动脉阻塞相关的ST段抬高型与非ST段抬高型急性心肌梗死患者的临床特征。方法：对连续收治的86例冠状动脉左回旋支相关的急性心肌梗死行冠状动脉介入治疗患者的临床资料进行回顾性分析,根据心电图的表现分为两组,ST段抬高型心肌梗死（STEMI）组（32例）,非sT段抬高型心肌梗死（NSTEMI）组（54例）,比较两组临床特征及预后。结果：与NSTEMI组比较,STEMI组血清肌酐水平[（80±23）／μmmol／L比（100±30）μmmol／L],主动脉内球囊反搏（3．7％比18．8％,P〈0．05）、有创呼吸机使用（1．9％比15．6％）、缺血性二尖瓣返流（13．0％比40．6％）、完全性房室传导阻滞（0比9．4％）,左冠状动脉优势型比例（7．4％比28．1％,P〈0．05）显著升高,左室舒张末期直径（LVEDd）[（46±4）mm比（48±5）mm]显著扩大（P〈0．05或〈0．01）。STEMI组三支血管病变显著低于NSTEMI组（46．9％比72．2％,P〈0．05）,两组住院死亡率无显著差异（3．1％比0％,P〉0．05）。结论：左回旋支动脉阻塞相关的ST段抬高型心肌梗死比非ST段抬高型心肌梗死的心功能差,这可能与左冠状动脉优势型较多有关。     

The Impact of Preinfarction Angina on Electrocardiographic Ischemia Grades in Patients with Acute Myocardial Infarction Treated with Primary Percutaneous Coronary Intervention

Objective: Grade 3 ischemia (G3I) is defined as ST elevation with distortion of the terminal portion of the QRS (emergence of the J point >50% of the R wave in leads with qR configuration, or disappearance of the S wave in leads with an Rs configuration). Patients with G3I on the presenting electrocardiogram (ECG) had worse prognosis than the patients with lesser (grade 2‐G2I) ischemia. The aim of this study is to examine the effects of preinfarct angina (PIA) on electrocardiographic ischemia grades. Methods: One hundred forty‐eight consecutive patients with ST‐segment myocardial infarction (STEMI) were included in this study. All patients underwent primary percutaneous coronary intervention. The admission ECGs was analyzed retrospectively for electrocardiographic ischemia grades and compared with the presence of PIA. Results: Study population consisted of 110 patients with G2I (88 men, mean age = 63 ± 6 years) and 38 patients with G3I (32 men, mean age = 61 ± 8 years). Baseline characteristics of the groups were the same except for patients with G3I had significantly longer pain to balloon time and higher admission creatine kinase MB isoenzyme (CK‐MB) levels. Tissue myocardial perfusion grade (TMPG) was better in patients with G2I. While 18 patients (47%) with G3I had PIA, 81 patients (70%) with G2I had PIA (P = 0.005). Although pain to balloon time and admission CK‐MB were independent predictor of worse electrocardiographic ischemia grade (OR 1.69, 95% CI 1.09–2.62; P = 0.01; OR 1.01, 1.00–286 Conclusion: PIA is one of the most important clinical predictors of better ischemia grades especially when combined with the pain to balloon time, LVEF, and admission CK‐MB levels in patients with STEMI. This study provided another evidence for the protective effects of PIA.     

梗死前心绞痛对初发ST段抬高的急性心肌梗死的影响

目的：观察梗死前心绞痛（PAP）对初发 ST段抬高急性心肌梗死（AMI）进展的影响。方法：280例初发ST段抬高 AMI患者,发病后24h内进行冠脉造影,心电图检查并作 QRS记分。根据有无PAP,患者被分为 PAP （102例）和非PAP组（178例）。根据发病至造影时间患者被分为：早期组（＜2h,60例）、中期组（2-6h,150例）和晚期组（6-24h,70例）。结果：伴有PAP患者较无PAP患者 QRS记分显著降低[（2.4±2.4）分比（3.2±3.0）分],PAP组高 QRS记分比例亦显著低于非 PAP组（8.0％比18.4％）,P 均＜0.05。早期组,PAP与非PAP患者之间 QRS记分无显著差异[（2.0±1.8）分比（2.6±2.8）分,P＝0.35];中期组,PAP患者QRS记分显著低于非PAP组[（2.0±2.1）分比（3.0±3.0）分,P＝0.03];晚期组,PAP和非 PAP患者 QRS记分较中期组显著上升,但两组间比较无显著差异[（4.1±3.3）分比（5.5±2.9）分,P＝0.13];非PAP组患者 QRS记分随着发病时间延长逐渐增加。结论：梗死前心绞痛可延迟急性心肌梗死疾病进展,扩大再灌注治疗时间窗。     

急性心肌梗塞急诊经皮冠脉介入治疗后长期预后的相关因素

目的:探讨急性心肌梗塞(AMI)急诊经皮冠状动脉介入(PCI)后长期预后的预测因素。方法:回顾性收集2000年1月至2005年6月共964例AMI行急诊PCI治疗的资料,分析长期随访期间临床不良事件(MACE)发生的相关因素。结果:所有病例平均随访(52.7±11.7)月,最长达8年。随访期间出现MACE者的年龄[(66.16±11.34)岁:(60.04±11.49)岁]、陈旧心肌梗塞比率(67.04%∶45.24%)、心功能分级≥KillipⅡ级(71.47%∶20.60%)、反映心肌梗塞面积的CK-MB峰值[(140.74±127.43)U/L∶(112.52±119.37)U/L]、糖尿病患病(63.53%∶47.22%)、入院血糖水平[(11.81±7.46)mmol/L∶(9.69±4.85)mmol/L]、纤维蛋白原浓度[(280.24±76.59)mg/dL∶(272.35±70.18)mg/dL]、入院白细胞水平[(11.68±4.36)×109/L:(10.77±3.40)×109/L]、胸痛至球囊扩张时间[(6.24±7.33)h∶(5.30±3.92)h]、冠状动脉病变Gensini记分[(115.09±52.74)分:(86.26±43.91)分]明显高于未发生者(P0.05~0.01),出现MACE者心肌梗塞溶栓心肌灌注(TMP)明显差于未发生者(P=0.000)。随访期间发生MACE的独立预测因素依次为术后TMP分级≤Ⅱ级(RR=5.08,P=0.000)、陈旧心肌梗塞病史(RR=2.73,P=0.046)、入院心功能分级≥KillipⅡ级(RR=2.68,P=0.0006)、糖尿病病史(RR=2.25,P=0.025)以及心电图ST段回落不良(RR=2.12,P=0.033)。结论:术后TMP分级≤Ⅱ级、陈旧心肌梗塞病史、入院心功能分级≥KillipⅡ级、糖尿病病史以及心电图ST段回落不良均为急性心肌梗塞行急诊经皮冠状动脉患者主要心脏不良事件的独立预测因素,其中术后TMP分级≤Ⅱ级的相对危险度最大。     

急诊冠脉介入治疗血栓抽吸改善急诊冠脉介入治疗后血流的疗效

目的：探讨急性ST段抬高性心肌梗死（sTEMI）患者行急诊冠脉介入治疗（PCI）时血栓抽吸预防无复流现象的疗效。方法：60例急性STEMI行急诊PCI患者被随机分为血栓抽吸＋替罗非班治疗组（血栓抽吸组30例）和常规经皮冠状动脉介入＋替罗非班治疗组（常规PCI组,30例）,观察两组PCI术前后心肌梗死血栓溶解（TI—MI）积分、肌酸激酶同工酶（cK—MB）峰值及达到其峰值时间、TIMI血流、心肌灌注分级（MPG）、左心室射血分数（LVEF）以及主要心血管不良事件（MAcE）发生率等的变化及进行组间比较。结果：与常规PCI组治疗后相比,血栓抽吸组治疗后血栓积分[（1．82±0．78）分比（1．02±0．55）分]明显下降（PG0．001）,球囊扩张次数[（3．06±0．83）次比（1．68±0．95）次]、靶血管平均植入支架数[（1．95±1．32）个比（1．16±0．83）个]明显减少（P〈0．001,〈0．01）,支架直接植入率（O比36．6％）、术后ST段回落〉50％率（50％比76．7oA）、术后3个月LVEF[（55．3±12．7）％比（62．6±13．8）％]明显升高（P〈0．05）,CK—MB达到峰值时间更早[（13．18±3．28）h比（10．35±2．72）h3、峰值更小[（358．6±231．9）U／L比（253．2±156．5）U／L],TIMI血流[（2．25±0．83）级比（2．83±0．67）级]、MPG明显改善[（2．23土0．76）级比（2．77±0．61）级],P均G0．05;两组MACE发生率及出血并发症差异无显著性（P〉0．05）。结论：PCI血栓抽吸可减少血栓,改善冠状动脉血流、心肌灌注和左室收缩功能,有较好的安全性。