MPVLR对急性ST段抬高型心肌梗死患者直接PCI术后无复流的预测价值

目的探讨平均血小板体积/淋巴细胞比率(MPVLR)对急性ST段抬高型心肌梗死(STEMI)患者直接PCI术后有无复流的预测价值。方法选择2015年1月至2017年12月期间山西医科大学第二医院收治的因急性STEMI住院并于发病12 h内行直接PCI的患者304例。收集入选患者的基线资料及术前血常规参数计算得出血小板/淋巴细胞比率(PLR)、平均血小板体积/淋巴细胞比率(MPVLR)。按PCI术中冠状动脉有无复流分为正常血流组及无复流组,Logistic回归分析其危险因素。结果单因素分析显示,无复流组淋巴细胞计数明显低于正常血流组(P0.05);无复流组平均血小板体积、PLR、MPVLR、高敏C反应蛋白、术中使用替罗非班、发病到球囊扩张时间、病变长度显著高于正常血流组(P0.05)。多因素分析显示,PLR、MPVLR及发病到球囊扩张时间是预测急性STEMI患者直接PCI术后无复流的独立危险因素。PLR、MPVLR对应的ROC曲线下面积分别为0.766、0.795,预测的敏感性分别为73.8%、88.7%,特异性分别为69.1%、64.1%。结论 MPVLR能够有效预测急性STEMI患者直接PCI术后无复流的发生,其作为血常规常见指标的计算值,获取方便,值得推广。     

D-二聚体与老年急性心肌梗死冠状动脉介入术后无复流的相关性研究

目的探讨D-二聚体水平与老年急性ST段抬高型心肌梗死(ST-elevated myocardiol infarction,STEMI)患者直接PCI后无复流的关系。方法连续性入选老年急性STEMI接受直接PCI患者124例,根据术后即刻血流TIMI分级和心肌染色分级将患者分为正常血流组84例和无复流组40例。比较2组D-二聚体水平,并探讨D-二聚体水平与术后无复流发生的关系。结果无复流组患者D-二聚体水平明显高于正常血流组[0.91(0.55,1.41)mg/L vs 0.46(0.33,0.96)mg/L,P=0.00]。多元logistic回归分析显示,D-二聚体水平是介入术后无复流发生的独立危险因素(OR=4.18,95%CI:1.18~14.7,P=0.026)。ROC曲线分析显示,术前D-二聚体界值为0.74mg/L时,预测术后无复流发生的敏感性为70.0%,特异性为72.6%。血浆D-二聚体0.74mg/L患者的无复流发生率明显高于血浆D-二聚体≤0.74mg/L患者无复流发生率(54.0%vs 17.5%,P=0.00)。结论老年急性STEMI患者接受直接PCI后,冠状动脉无复流发生与D-二聚体水平相关。     

单核细胞/高密度脂蛋白胆固醇比值与急性心肌梗死患者介入术后慢血流或无复流的相关性分析

目的:探讨急性心肌梗死患者中单核细胞/高密度脂蛋白胆固醇比值(MHR)与冠状动脉介入治疗(PCI)后慢血流或无复流的关系。方法:纳入我院2014-10至2016-05符合入选标准的共216例急性ST段抬高型心肌梗死(STEMI)患者,分为慢血流或无复流组[心肌梗死溶栓治疗临床试验(TIMI)血流≤2级]43例和正常血流组173例。采用受试者工作特征曲线(ROC曲线)评价MHR预测慢血流或无复流发生的最佳切点值及其评判慢血流或无复流的特异性和敏感性,此外,运用Logistic回归分析MHR是否可作为STEMI患者介入后冠状动脉慢血流或无复流的独立危险因素。结果:与正常血流组相比,慢血流或无复流组MHR明显较高(18.6±9.8 vs 10.9±5.5,P0.001),单因素Logistic回归分析可知MHR是冠状动脉慢血流或无复流的危险因素(OR=2.22,95%CI:1.58~3.28),同时多因素Logistic回归分析得出:MHR是冠状动脉慢血流或无复流的独立危险因素(OR=1.55,95%CI:1.01~2.38);ROC曲线计算MHR预测慢血流或无复流的最佳切点值为13.37,敏感性和特异性分别为67.4%和70.5%,曲线下面积(AUC)为0.734(95%CI:0.646~0.822)。结论:MHR是急性心肌梗死患者介入后冠状动脉慢血流或无复流的独立危险因素。     

CHA_2DS_2-VASc评分与急性ST段抬高型心肌梗死患者介入术后无复流的相关性研究

目的:探讨CHA_2DS_2-VASc评分对急性ST段抬高型心肌梗死(STEMI)患者行直接经皮冠状动脉介入(PPCI)治疗后无复流发生的预测价值。方法:选择2018年1月—2020年6月因STEMI就诊于江苏省苏北人民医院心内科行PPCI治疗的患者288例,依据术后TIMI血流分为无复流组(TIMI血流≤2级)49例、复流组(TIMI血流=3级)239例。收集两组患者的一般临床资料、实验室检查指标及手术相关信息,利用CHA_2DS_2-VASc评分系统进行评分。采用Logistic单因素及多因素回归分析PPCI术后无复流发生的独立危险因素,应用ROC曲线分析CHA_2DS_2-VASc评分预测无复流发生的最佳截点。结果:无复流组的CHA_2DS_2-VASc评分显著高于复流组(3.39±1.79∶1.97±1.51,P0.001)。多因素Logistic回归分析显示,CHA_2DS_2-VASc评分是术后无复流发生的独立预测因子(OR=1.481,95%CI:1.200～1.828,P0.001)。ROC曲线分析发现,CHA_2DS_2-VASc评分=3分为预测无复流发生的最佳截点(AUC=0.729,95%CI:0.651～0.806),特异性为66.5%,敏感性为71.4%。结论:CHA_2DS_2-VASc评分可作为一种有效预测STEMI患者PPCI术后无复流发生的评分工具,指导临床抗栓治疗方案选择,降低术后无复流的发生。     

GRACE评分联合中性粒细胞与淋巴细胞比值对急性STEMI患者PCI后无复流现象的预测价值

目的:探讨GRACE评分联合中性粒细胞/淋巴细胞(NLR)水平与急性ST段抬高型心肌梗死(STEMI)患者接受直接经皮冠状动脉介入(PCI)治疗后无复流现象的关系及预测价值。方法:对2018年10月1日—2019年12月31日就诊于河北省人民医院心脏中心行直接PCI治疗的急性STEMI患者269例进行回顾性分析。根据冠状动脉造影结果分为复流组(225例)和无复流组(44例)。应用二元Logistic回归分析确定无复流现象的独立预测因子,绘制ROC曲线以评估GRACE评分、NLR及两者联合对无复流现象的预测价值。结果:共纳入269例患者,无复流发生率为16.3%。调整混杂因素后,二元Logistic回归分析显示GRACE评分(OR=1.011,95%CI1.002～1.020,P=0.017),NLR(OR=1.068,95%CI1.008～1.132,P=0.025)是无复流发生的独立预测因子。在无复流预测中,GRACE评分在ROC曲线下面积0.621(95%CI0.553～0.709),敏感性为79.5%,特异性为44.2%,最佳临界值为118.5;NLR在ROC曲线下面积0.614(95%CI0.512～0.715),敏感性为91.1%,特异性为38.6%,临界值为10.97。GRACE评分联合NLR(联合预测因子)在ROC曲线下面积为0.641(95%CI0.550～0.732,P=0.03)。分别比较联合预测因子与单独GRACE评分和单独NLR的预测能力,均无统计学差异(P0.05)。结论:GRACE评分、NLR均是无复流的独立预测因子,GRACE评分联合NLR可以预测STEMI患者PCI治疗后无复流现象的发生,但并未体现出优于单一使用GRACE评分或NLR的预测价值。     

血小板-淋巴细胞聚集体和血小板/淋巴细胞比值在预测急诊经皮冠状动脉介入治疗术后心肌无复流中的作用

目的:探讨血小板-淋巴细胞聚集体(PLy A)水平和血小板/淋巴细胞比值(PLR)在预测急性ST段抬高型心肌梗死(STEMI)患者急诊经皮冠状动脉介入治疗(PCI)术后心肌无复流中的临床价值。方法:共纳入行急诊PCI的STEMI患者93例,PCI术前采集外周静脉血,应用流式细胞仪检测PLy A水平。根据PCI后是否有心肌无复流分为无复流组(n=24)和复流组(n=69)。心肌无复流定义为:在没有解剖性狭窄及血管痉挛的情况下,冠状动脉心肌梗死溶栓治疗临床试验(TIMI)血流分级≤2级。结果:24例(25.8%)STEMI患者急诊PCI术后发生心肌无复流。与复流组相比,无复流组PLy A水平明显升高(P0.05)。多因素Logistic回归分析表明,PLR是心肌无复流发生的独立危险因素(OR=2.28,95%CI:1.15~3.29,P=0.023)。受试者工作特征(ROC)曲线分析表明,当PLR大于118.4%时,PLR预测急诊PCI术后心肌无复流发生的敏感度为69.2%,特异度为63.2%,曲线下面积为0.715(95%CI:0.521~0.908,P=0.042)。结论:PLR可能是一种预测STEMI患者急诊PCI术心肌无复流发生独立而有效的指标。     

三项指标与老年急性STEMI患者介入术后无复流的相关性研究

目的 探讨入院休克指数（shock index, SI）、入院血糖(admission plasma glucose, APG)和同型半胱氨酸(homocysteine, HCY)与老年急性ST段抬高型心肌梗死（ST-segment elevation myocardial infarction, STEMI)患者行急诊经皮冠状动脉介入（percutaneous coronary intervention, PCI）术后无复流的相关性。方法 分析行急诊PCI术379例老年急性STEMI患者的临床资料,根据PCI术后TIMI血流分为无复流组（n=71）和正常血流组(n=308)。比较两组患者的临床资料、造影及介入情况。采用单因素及多因素Logistic回归模型分析老年急性STEMI患者行急诊PCI术后出现无复流的独立危险因素,利用受试者工作特征（receiver operator characteristic,ROC）曲线评估老年急性STEMI患者行急诊PCI术后发生无复流的预测效能。结果 与正常血流组比较,无复流组患者入院心率、SI高于正常血流组,收缩压、舒张压低于正常血流组,均P&l...     

中性粒细胞淋巴细胞比值与急性ST段抬高型心肌梗死患者PCI术后无复流相关性研究

目的探讨中性粒细胞淋巴细胞比值(NLR)与急性ST段抬高型心肌梗死(STEMI)患者经皮冠状动脉(冠脉)介入治疗(PCI)后无复流的相关性,为STEMI患者的早期危险分层提供参考。方法选取2015年1月至2017年1月于北京大学民航总医院心内科收治的198例接受PCI的STEMI患者纳入研究,根据心肌梗死溶栓治疗(TIMI)分级标准确定患者是否发生冠脉无复流,分为无复流组和正常血流组。比较两组患者基线资料,ROC工作曲线评价NLR对无复流的预测价值,多元Logistic回归分析无复流的危险因素。结果198例患者中,出现无复流39例(19.7%)。NLR预测无复流的ROC曲线下面积0.764,最佳临界值3.25,此时敏感度为78.8%,特异度为70.5%。多元Logistic回归分析显示,既往冠状动脉疾病史,PCI前TIMI血流0级,NLR≥3.25,多支血管病变为冠脉无复流的独立危险因素。结论NLR有助于预测STEMI患者PCI术后无复流的发生,以便针对高风险患者提前采取积极干预措施,改善预后。     

休克指数与修正休克指数对急性ST段抬高型心肌梗死患者急诊PCI治疗中慢血流/无复流的预测价值

目的 探讨休克指数（shock index,SI）与修正休克指数（modified shock index,MSI）对急性ST段抬高型心肌梗死（ST segment elevation myocardial infarction,STEMI）患者急诊经皮冠状动脉介入（percutaneous coronary intervention,PCI）治疗中出现慢血流/无复流现象的预测价值。方法 回顾性分析2016年1月至2020年3月在佛山市南海区人民医院就诊并行直接PCI治疗的急性STEMI患者，根据PCI治疗影像学结果将患者分为正常组和慢血流/无复流组，分别计算SI及MSI，比较两组患者间的基线资料，通过受试者工作特征曲线（receiver operating characteristic curve,ROC）分析SI、MSI对急性STEMI患者急诊PCI治疗中慢血流/无复流发生的预测价值。结果 共收集患者834例，发生慢血流/无复流139例（16.67%）,ROC分析结果显示SI、MSI的最佳截断值分别为0.677、0.899，其预测慢血流/无复流发生的曲线下面积分别为0.654(CI...     

同型半胱氨酸联合中性粒细胞计数对绝经后患者心肌无复流的预测价值

目的:探讨血同型半胱氨酸(Hcy)和中性粒细胞计数(ANC)对绝经后急性ST段抬高型心肌梗死(STEMI)患者经皮冠状动脉介入治疗(PCI)术中无复流的预测价值。方法:回顾性选择绝经后首诊STEMI并于2017年12月—2019年10月在宁夏医科大学总医院接受急诊PCI治疗的126例患者,根据冠状动脉(冠脉)造影结果分为正常血流组(95例)和无复流组(31例)。比较两组基线资料,应用logistic回归分析评估Hcy和ANC对绝经后STEMI患者PCI术中无复流的影响。通过ROC曲线评估Hcy联合ANC对心肌无复流的预测价值。结果:纳入患者126例,无复流发生率为24.66%。多因素logistic回归显示,术前Hcy(OR=1.136,95%CI:1.067～1.210,P<0.001)和ANC(OR=1.280,95%CI:1.091～1.501,P=0.002)是无复流发生的危险因素。ROC曲线分析显示,ANC预测心肌无复流的曲线下面积为0.724(95%CI:0.619～0.829),截断值为9.88×10⁹/L,灵敏度为64.5%,特异度为81.1...     

血清甲状旁腺素水平与急诊PCI慢复流、室性心律失常的相关性与预测价值

目的 探讨急性ST段抬高型心肌梗死（STEMI）患者血清甲状旁腺素（PTH）水平与急诊经皮冠状动脉介入治疗（PCI）术中慢复流、围手术期（急诊室至术后72h）室性心律失常（VAs）的相关性与预测价值。 方法 连续性入选112例因STEMI接受急诊PCI治疗的患者,利用二分类Logistic回归分析模型评估PTH与慢复流及VAs是否独立相关,绘制ROC曲线评价其预测价值。 结果 PTH是介入术中慢复流（OR=5.768, 95%CI: 1.808-18.402, P<0.01）及围手术期中高危VAs（OR=18.278, 95%CI: 4.881-68.445, P<0.01）的独立预测因子,预测慢血流的ROC曲线下面积（AUC）为0.737 (95%CI: 0.634-0.841, P<0.01),其截断点为PTH=65.5pg/ml,灵敏度75%,特异度72%;预测VAs时,AUC为0.837 (95%CI: 0.759-0.914, P<0.01),截断点为PTH=61.9pg/ml,灵敏度82%,特异度73%。 结论 血清PTH水平与STEMI患者急诊PCI术中慢复流及围手术期VAs有一定相关性,并有较好的预测价值。     

The impact of admission red cell distribution width on the development of poor myocardial perfusion after primary percutaneous intervention

BackgroundThe purpose of this study was to evaluate the predictive value of red cell distribution width (RDW) on the electrocardiographic no-reflow phenomenon in patients undergoing primary percutaneous coronary intervention (PCI).MethodsOne-hundred consecutive patients (mean age 61.3 ± 12.8 years and male 77%) with ST-elevation myocardial infarction, who were treated with primary PCI, were analyzed prospectively. RDW and high sensitive C reactive protein (hs-CRP) were measured. The sum of ST-segment elevation was obtained immediately before and 60 min after the restoration of coronary flow. The difference between two measurements was accepted as the amount of ST-segment resolution and was expressed as ∑STR. ∑STR < 50% was accepted as electrocardiographic sign of no-reflow phenomenon.ResultsThere were 30 patients in the no-reflow group (Group 1) and 70 patients in the normal re-flow group (Group 2). RDW and hs-CRP levels on admission were higher in Group 1. An RDW level ≥14% measured on admission had 70% sensitivity and 64% specificity in predicting no-reflow on ROC curve analysis. Mid-term cardiovascular events were significantly higher in Group 1. In multivariate analyses, RDW (OR 2.93, <95% CI 1.42–6.04; p = 0.004), and tirofiban (OR 0.16, <95% CI 0.05–0.48; p = 0.001) were independent predictors of no-reflow, and RDW (OR 5.89, <95% CI 1.63–21.24; p = 0.007), and creatine kinase-MB (CK-MB) on admission (OR 1.01, <95% CI 1.00–1.02; p = 0.006) were independent predictors of mid-term mortality.ConclusionsA greater baseline RDW value was independently associated with the presence of electrocardiographic no-reflow.     

Association of Soluble Suppression of Tumorigenicity with No-Reflow Phenomenon and Long-Term Prognosis in Patients with Non-ST-Segment Elevation Acute Coronary Syndrome after Percutaneous Coronary Intervention

Aims: Soluble suppression of tumorigenicity 2 (sST2) was validated to independently predict prognosis for heart failure (HF) and ST-segment elevation myocardial infarction (STEMI). In this study, we aimed to evaluate the relation between sST2 and coronary artery stenosis, and no-reflow phenomenon and one-year prognosis in patients with non-ST-segment elevation acute coronary syndrome (NSTE-ACS). Methods: This prospective study consecutively enrolled 205 patients who were diagnosed with NSTE-ACS and underwent percutaneous coronary intervention (PCI). sST2 was measured for all patients during admission. Patients were divided into two groups based on the optimal cutoff value: sST2 ＞34.2 ng/ml and sST2 ≤ 34.2 ng/ml groups. Results: Patients in the sST2 ＞34.2 ng/ml group was associated with higher Gensini scores and multivessel disease. sST2 had weak predictive value for no-reflow phenomenon (area under the curve [AUC], 0.662; 95% confidence interval [CI], 0.53–0.79; P =0.015) with 66.7% sensitivity and 65.2% specificity, and it also had independent predictive value of no-reflow phenomenon after adjusting for confounding factors (odds ratio [OR], 3.802; 95% CI, 1.03–14.11; P =0.046). sST2 ＞34.2 ng/ml had a commendable predictive value for the one-year prognosis (AUC, 0.84; 95% CI, 0.75–0.93; P ＜0.001) with 72% sensitivity and 84% specificity, and it independently predicted one-year major cardiovascular and cerebrovascular events (MACCE) (hazard ratio [HR], 10.22; 95% CI, 4.05–25.7; P ＜0.001). Conclusion: The sST2 concentration on admission is correlated with the degree of coronary artery stenosis. sST2 can predict both no-reflow and MACCE in patients with NSTE-ACS after PCI and was an independent predictor of MACCE and no-reflow phenomenon.     

Troponin I concentrations following primary percutaneous coronary intervention predict large infarct size and left ventricular dysfunction in patients with ST-segment elevation acute myocardial infarction

The aim of this study was to investigate the ability of troponin I (cTnI) levels to predict myocardial infarction size in patients with ST-segment elevation acute myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PCI). In 87 patients with STEMI undergoing primary PCI, serial plasma concentrations of cTnI and alpha-hydroxybutyrate deshydrogenase (HBDH) were measured before PCI and over the following 72 h. Enzymatic infarct size was estimated by the cumulative release of HBDH during the 72 h following PCI (QHBDH72). Delayed radionuclide left ventricular ejection fraction (LVEF) was measured in 63 patients. While cTnI concentrations at admission did not correlate with QHBDH72 or with LVEF, from the 3rd to the 72nd h following PCI, they did correlated with QHBDH72 (P<0.001; R: 0.76-0.86) and with LVEF (P<0.001; R: -0.42 to -0.50). Receiver-operator characteristic (ROC) curve analysis showed that admission concentrations of cTnI could not predict either a large infarct size (i.e., QHBDH72>10 g-eq l(-1)) or a low LVEF (i.e., LVEF<40%). However, 6 h and up until 72 h after PTCA, cTnI concentrations were predictive of large enzymatic infarct size (sensitivity: 91 and 95%, specificity: 90 and 87%, respectively) and of LVEF under 40% (sensitivity: 75 and 77%, specificity: 90 and 78%, respectively). Thus, our study suggests that in contrast with admission cTnI concentration, cTnI levels following primary PCI represent a reliable tool for predicting large enzymatic infarct size and may help in selecting patients with a high risk of low LVEF at 1 month.     

Prognostic value of R-wave voltage in patients with anterior wall ST-segment elevation myocardial infarction undergoing primary percutaneous coronary intervention

The prognostic value of integrated R-wave voltages of precordial leads (V(1)-V(6)) in patients with acute anterior wall ST-elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PCI) was investigated. Between July 2006 and October 2009, 292 patients with anterior wall STEMI with presentation < 12 hours underwent primary PCI. Thirty-four patients with electrocardiographic presentation of either complete right bundle branch block (BBB) or complete left BBB were categorized into group A, while the remaining 258 patients without BBB served as group B that was further subdivided into those with lower R-wave voltage (summation of V(1)-V(6) ≤ 1.7 mV) (group 1) and higher voltage (> 1.7 mV) (group 2) according to the ROC curve (sensitivity = 66.3%, specificity = 66%, P < 0.0001).While the procedural success rate was similar between groups A and B and groups 1 and 2, 30-day mortality was higher in group A than B (P ≤ 0.0001). Additionally, left ventricular ejection fraction (LVEF) was lower, whereas peak level of creatine phosphokinase (CPK), incidence of advanced congestive heart failure, and 30-day mortality were higher in group 1 than 2 (P < 0.01). Multivariate analysis revealed that lower R-wave voltage, multivessel disease, leukocyte count, peak CPK, and creatinine level were predictive of 30-day unfavorable clinical outcomes (all P < 0.01). R-wave voltage in precordial leads was a significant independent predictor of 30-day prognostic outcome in patients with anterior wall STEMI undergoing primary PCI.     

Impact of atrial fibrillation on the no-flow phenomenon during primary percutaneous coronary intervention

Background Atrial fibrillation(AF)is reported to be associated with worse flow in patients with the treatment of coronary thrombolysis. However,few studies investigated the impact of atrial fibrillation on the noreflow phenomenon in ST-segment elevation myocardial infarction(STEIMI)patients undergoing primary percutaneous intervention(PCI). Methods 1163 STEMI patients undergoing primary PCI from Jan 2013 to Dec2019 were enrolled. Atrial fibrillation was diagnosed based on the electrocardiogram's findings. Patients with a TIMI flow rate less than 3 were considered to have no-reflow. Factors related to the no-reflow phenomenon was analyzed by the logistic regression analysis. Results 158 patients were in the AF group and 1005 patients were in the non-AF group. The AF group had a significantly higher occurrence of cardiogenic shock(11.4% vs. 5.6%,P0.001),and in-hospital mortality(9.5% vs. 3.1%,P0.001)than the non-AF group. The multivariate analysis showed that AF was an independent risk factor for the no-reflow phenomenon after primary PCI(OR:2.11,95% CI:1.27-3.88,P=0.014). Conclusions STEMI patients with AF would have higher in-hospital adverse events and no-reflow phenomenon than though without AF.[S Chin J Cardiol 2020;21(2):98-103]     

Usefulness of preprocedural N-terminal pro-brain natriuretic peptide in predicting angiographic no-reflow phenomenon during stent implantation in patients with ST-segment elevation acute myocardial infarction

The no-reflow phenomenon after primary percutaneous coronary intervention (PCI) is associated with larger infarct size, worse functional recovery, and higher incidence of complication after acute ST-elevation myocardial infarction (STEMI). The aim of this study was to assess the relation between preprocedural N-terminal pro-brain-type natriuretic peptide (NT-pro-BNP) and angiographic no-reflow phenomenon. We measured preprocedural serum NT-pro-BNP level in 159 consecutive patients with acute STEMI (aged 63 +/- 12 years; 72% men) before PCI. Angiographic no-reflow after PCI was defined as Thrombolysis In Myocardial Infarction (TIMI) flow grade <3. Baseline characteristics, including time from chest pain onset, between the no-reflow (n = 67) and normal-reflow groups (n = 92) were similar. NT-pro-BNP was significantly higher in the no-reflow group than the normal reflow group (1,982 +/- 3,314 vs 415 +/- 632 pg/ml; p = 0.005). Also, high-sensitivity C-reactive protein, monocytes, and troponin-T were significantly higher in the no-reflow group than the normal-reflow group. In the no-reflow group, NT-pro-BNP was much higher in patients with TIMI flow grade 0 (n = 41; 2,290 +/- 3,495 pg/ml) than those with TIMI grade 1 or 2 (n = 26; 1,575 +/- 2,340 pg/ml), but without significant difference. The area under the receiver-operating characteristic curve for NT-pro-BNP was 0.78, and the optimal cut-off value identified using receiver-operating characteristic curve analysis was 500 pg/ml. At the standard cut-off value of >500 pg/ml, increased NT-pro-BNP showed a high probability of no-reflow phenomenon (odds ratio 4.42, 95% confidence interval 1.15 to 17.00, p = 0.028). In conclusion, preprocedural NT-pro-BNP may be a strong predictor of the development of no-reflow phenomenon after PCI in patients with acute STEMI.     

急性心肌梗死直接介入治疗后无复流的血管因素

目的:探讨急性ST段抬高型心肌梗死(STEAMI)患者直接经皮冠状动脉内介入治疗(percutaneous coronary intervention,PCI)后与无复流有关的血管因素。方法:回顾性分析410例STEAMI患者直接PCI后的临床和造影资料,无复流患者51例,由其余359例直接PCI后TIMI3级血流者中随机抽取60例作为正常血流组。结果:无复流的发生率为12.44%。:两组在几乎完全闭塞、血栓、钙化、长病变等造影发现的罪犯血管形态学改变存在显著性差异。结论:STEAMI患者如果在造影时发现罪犯血管存在几乎完全闭塞、血栓、钙化、长病变等形态学改变,则直接PCI后无复流的发生率明显著增加。     

Mean platelet volume on admission predicts impaired reperfusion and long-term mortality in acute myocardial infarction treated with primary percutaneous coronary intervention

OBJECTIVES: We sought to determine the prognostic value of mean platelet volume (MPV) for angiographic reperfusion and six-month mortality in patients with acute ST-segment elevation myocardial infarction (STEMI) treated with primary percutaneous coronary intervention (PCI). BACKGROUND: Mean platelet volume is predictive of unfavorable outcome among survivors of STEMI when measured after the index event. No data are available for the value of admission MPV in patients with STEMI treated with primary PCI. METHODS: Blood samples for MPV estimation, obtained on admission in 398 consecutive patients presenting with STEMI, were measured before primary PCI. Follow-up up to six months was performed. RESULTS: No-reflow was significantly more frequent in patients with high MPV (> or =10.3 fl) compared with those with low MPV (<10.3 fl) (21.2% vs. 5.5%, p < 0.0001). The MPV was correlated strongly with corrected Thrombolysis In Myocardial Infarction frame count (CTFC) (r = 0.698, p < 0.0001). Kaplan-Meier survival analysis showed six-month mortality rate of 12.1% in patients with high MPV versus 5.1% in low MPV group (log rank = 6.235, p = 0.0125). After adjusting for baseline characteristics, high MPV remained a strong independent predictor of no-reflow (odds ratio [OR] 4.7, 95% confidence interval [CI] 2.3 to 9.9, p < 0.0001), CTFC > or =40 (OR 10.1, 95% CI 5.7 to 18.1, p < 0.0001), and mortality (OR 3.2, 95% CI 1.1 to 9.3, p = 0.0084). Abciximab administration resulted in significant mortality reduction only in patients with high MPV values (OR 0.02, 95% CI 0.01 to 0.48, p = 0.0165). CONCLUSIONS: Mean platelet volume is a strong, independent predictor of impaired angiographic reperfusion and six-month mortality in STEMI treated with primary PCI. Apart from prognostic value, admission MPV may also carry further practical, therapeutic implications.