A randomized trail comparing primary percutaneous coronary intervention with a strategy of short-acting thrombolysis and immediate planned primary percutaneous coronary intervention in acute myocardial infarction

Objective This study was to evaluate the efficacy and safety of a short acting reduced dose fibrinolytic regimen to promote early infarct related artery (IRA) patency for acyute myocardial infarction (AMI) patients referred for percutaneous coronary intervention (PCI).Methods Following aspirin and heparin, 166 patients were randomized to a 50 mg bolus of recombinant tissue type plasminogen activator(rt PA) or to a same volume sodium chloride injection followed by immediate primary PCI. The end points included patency rates on catheterization laboratory (cath lab) arrival, revascularization results when PCI was performed, complication rates, left ventricular function and restored patency rate following PCI. Results Patency on cath lab arrival was 64% with rt PA (34% TIMI 3,30% TIMI 2), while 31% of placebo (13% TIMI 3, 18% TIMI 2). There was no difference in the restored TIMI 3 rates of IRA between the two groups (85% vs 87%). No difference were observed in stroke or major bleeding. Left ventricular function was similar in both groups (52±9% vs 50±8%), but left ventricular ejection fraction fraction (LVEF) was higher with patent IRA (TIMI 3) on cath lab arrival than that of others (56±12% vs 48±10%).Conclusions Strategy thrombolytic regimens were compatible with subsequent PCI lead to more frequenc early recanalization (before cath lab arrival), which facilitates greater left ventricular function preservation with no augmentation of adverse events.

Comparison of plasma microRNA-1 and cardiac troponin T in early diagnosis of patients with acute myocardial infarction

BACKGROUND:Early reperfusion can effectively treat acute myocardial infarction(AMI) and reduce the mortality signif icantly. This study aimed to compare the role of plasma microRNA-1(miR-1) and cardiac troponin T(cTnT) in early diagnosis of AMI patients.METHODS:From May 2011 to May 2012,plasma samples were collected from 56 AMI patients and 28 non-AMI controls. The expression of plasma miR-1 was measured by quantitative reverse transcription-polymerase chain reaction(qRT-PCR),and the level of plasma cTnT was measured using electrochemiluminescence-based methods on an Elecsys 2010 Immunoassay Analyzer. SPSS 16.0 was used for the statistical analysis of the results. Data were expressed as mean±standard deviation unless otherwise described. The differences about clinical characteristics between the AMI patients and controls were tested using Student's t test or Fisher's exact test. The Mann-Whitney U test was conducted to compare the expression of microRNAs between the AMI patients and controls. MicroRNAs expression between different intervals of the AMI patients was compared using Wilcoxon's signed-rank test. The receiver operating characteristic(ROC) curve was established to discriminate the AMI patients from the controls.RESULTS:In the present study,the expression of plasma miR-1 was signifi cantly increased in the AMI patients compared with the healthy controls(P<0.01). The plasma miR-1 in the AMI patients decreased to the normal level at 14 days(P>0.05). The expression of plasma miR-1 was not related to the clinical characteristics of the study population(P>0.05). ROC curve analyses demonstrated that miR-1 was specifi c and sensitive for the early diagnosis of AMI,but not superior to cTnT.CONCLUSION:Plasma miR-1 could be used in the early diagnosis of AMI,but it is similar to cTnT.

Intracranial hematoma development following thrombolysis inpatients suffering with acute myocardial infarction: Management strategy

Intracerebral hemorrhage secondary to thrombolysis in patients with acute myocardial infarction is a catastrophic condition.Several factors predispose to intracranial bleeding including low body weight,female sex,advanced age,use of oral anticoagulants prior to the administration of fibrinolytic therapy,diastolic blood pressure (greater than 110 mm Hg),among others.Optimal medical management involves multidisciplinary roles of hematology,neurosurgery and critical medicine.In this illustrative case,a classification and management algorithm were proposed for patients with complications hemorrhage associated with thrombolysis after myocardial infarction.

The combination of creatine kinase-myocardial band isoenzyme and point-of-care cardiac troponin/contemporary cardiac troponin for the early diagnosis of acute myocardial infarction

BACKGROUND:The early diagnosis of acute myocardial infarction(AMI)remains challenging,especially for institutions without the high-sensitive cardiac troponin(hs-c Tn)assay.Herein,we aim to assess the value of creatine kinase-myocardial band isoenzyme(CK-MB)combined with different cardiac troponin(c Tn)assays in AMI diagnosis.METHODS:This multicenter,observational study included 3,706 patients with acute chest pain from September 1,2015,to September 30,2017.We classified the participants into three groups according to the c Tn assays:the point-of-care c Tn(POC-c Tn)group,the contemporary c Tn(c-c Tn)group,and hs-c Tn group.The diagnostic value was quantified using sensitivity and the area under the curve(AUC).RESULTS:Compared to the single POC-c Tn/c-c Tn assays,combining CK-MB and POC-c Tn/c-c Tn increased the diagnostic sensitivity of AMI(56.1%vs.63.9%,P<0.001;82.7%vs.84.3%,P=0.025).In contrast,combining CK-MB and hs-c Tn did not change the sensitivity compared with hs-c Tn alone(95.0%vs.95.0%,P>0.999).In the subgroup analysis,the sensitivity of combining CKMB and c-c Tn increased with time from symptom onset<6 h compared with c-c Tn alone(72.8%vs.75.0%,P=0.046),while the sensitivity did not increase with time from symptom onset>6 h(97.5%vs.98.3%,P=0.317).The AUC of the combination of CK-MB and POC-c Tn significantly increased compared to the single POC-c Tn assay(0.776 vs.0.750,P=0.002).The AUC of the combined CKMB and c-c Tn/hs-c Tn assays did not significantly decrease compared with that of the single c-c Tn/hs-c Tn assays within 6 h.CONCLUSIONS:The combination of CK-MB and POC-c Tn or c-c Tn may be valuable for the early diagnosis of AMI,especially when hs-c Tn is not available.

The influence of tirofiban on the troponin, brain natriuretic peptide, heart function in patients with Acute Myocardial Infarction after PCI

Objective:To observe the influence of tirofiban on the troponin, brain natriuretic peptide, heart function in patients with Acute Myocardial Infarction after PCI and provide scientific basis for treatment of acute myocardial infarction.Methods:A total of 100 cases of hypertensive cerebral hemorrhage patients in our hospital were selected and randomly divided into 2 groups: the control group (50 cases) and the observation group (50 cases). The conventional treatment of PCI was performed on both groups. Tirofiban injection was given to the observation group on the basis of conventional treatment. cTnI, BNP and echocardiography parameters (LVEF, LVEDD, LVESD) were detected before and after treatment.Results:The comparison of cTnI in the two groups before operation was not statistically significant. cTnI in the 2 groups increased 12 h and 24 h after operation. But the cTnI in observation group (0.10±0.23) ng/mL decreased more significantly than that in control group (0.24±0.31) ng/mL, the difference was considered to be statistically significant. The comparison of BNP in the two groups before operation was not statistically significant. BNP in the 2 groups decreased obviously 7 d and 30 d after operation. BNP in observation group decreased more significantly than that in control group and the difference was considered to be statistically significant LVEF in the observation group increased significantly compared with that in control group 7 d after operation. The comparison of LVEDD, LVESD were not considered to be statistically significant. LVEDD and LVESD in the observation group were lower than that in control group obviously 30 d after operation. While the LVEF in the observation group was still higher than that in the control group. The comparsion was considered to be statistically significant.Conclusion:Tirofiban can improve the troponin, brain natriuretic peptide, heart function in patients with Acute Myocardial Infarction after PCI. It can also decrease the heart injury as well as helping the recovery of heart function.

Risk Stratification with Serum Cardiac Troponin I in Acute Myocardial Infarction on Admission

Objective To assess the prognostic significance of serum cardiac troponin I (cTnI) concentration in patients with acute myocardial infarction on admission. Methods Serum samples of 108 patients with established AMI were collected on admission for measuring cTnI and were grouped according to the intervals between the onset of chest pain and admission. Results In each of these groups, the serum cTnI concentrations in patients died after admission were significantly higher than those who survived (all P<0.05). Conclusions A higher serum cTnI concentration on admission in patients with AMI was associated with an increased risk of subsequent cardiac death during hospitalization.

Early and Late Coronary Angiographic Changes After Thrombolysis in Acute Myocardial Infarciton

Objective The coronaryanatomic feature and development after thrombolysis in acute myocardial infarction (AMI) were studied. Mehtods 100 patients with AMI received urokinase and strepokinase. Coronary angiography (CAG) was performed at 90 minuts and again at 3 to 4 weeks. Results Successful thrombolysis occurred in 60 cases, but failed in 40. The ratio of reperfusion was 60%. CAG showed there were residual thrombi in 84 patients (84% ) and complete coronary occlusion in 40(40% ). Angiography at 3 to 4 weeks after thrombolysis showed the stenosis worsened in 8 patients and improved in 10. Conclusion AMI is caused by sudden coronary thrombotic occlusion and can be reperfused by using thrombolytic agent or mechanical methods. Throm-bolytic agents usually can not resolve thrombi completely. So percutaneous transluminal coronary angiography (PTCA) is recommended as an important method to improve serious residual stenosis.

EVALUATION OF SERUM TROPONIN T MEASUREMENTIN ACUTE MYOCARDIAL INFARCTION

The release kinetics of the cardiac specific troponin T (cTnT), measured by an immunosorbent assay, in 32 patients with acute myocardial infarction (AMI) was evaluated. In 8 AMI patients (25%), the release kinetics of serum cTnT showed biphasic serum concentration curves with a large peak at 10 to 18 hours after onset and the serum cTnT concentrations were up to 30 to 120 times of the normal upper limit-detected (0.2 μg / ml), and another samll cTnT peak at 70 to 100 hours after onset of pain. The serum cTnT measurements in the remaining 24 AMI patients (75%) gave only one large peak which was around 32 to 108 hours after onset of pain. cTnT appeared in serum as early as 3 to 4 hours and remained elevated until 240 hours after the infarctions. The results indicated that (1) cTnT was a sensitive and specific marker of AMI; (2) the biphasic curve of cTnT releae in general, the ratio of cTnT at around 14 to 32 (14/32)>1 in particular, may be a useful marker suggesting early reperfusion; (3) the continuous elevation of serum cTnT in AMI course might be a prognostic indicator for unfavorable outcomes.

PROCOAGULANT EFFECTS OF THROMBOLYTICTHERAPY IN ACUTE MYOCARDIAL INFARCTION

To examine the procoagulant effects of thrombolytic agent on h emostasis and study the role of hemostatic markers as predictors of clinical outcomes. Methods. In the present study, eighteen patients with acute myocardial in farction(AMI) received 1.5 or 2.0 million U nonspecific urokinase(UK), or 70～80 mg fibrin specific recombinant tissue plasminogen activator(rt PA)and did not use heparin until 8 hours after intravenous injection of the above agents. Eig ht patients with AMI and without thrombolytic therapy were enrolled as controls. Coagulant and thrombolytic activity markers included thrombin antithrombin Ⅲ complex (TAT), D dimer, fibrinogen (Fg), FMPV/Amax. All markers were determined before,immediately,1,2,4 and 8 hours after the administration of thrombolytic a gents respectively. Results. Molecular marker of thrombin generation——TAT showed an activated coa gulant state immediately after thrombolytic therapy. Level of TAT showed no sign ificant changes between every two observed phases in controls. However, level of TAT increased significantly from 4.95±1.75μg/L ( 4.63±1.37μg/L) to 14.71±3 .31μg/L ( 14.25±2.53μg/L) before and immediately after administration of thro mbolytic agents UK(or rt PA). There was significant difference between level of serum TAT of patients with and without thrombolytic therapy (P< 0.05). Patients achieving clinical reperfusion had lower TAT level than those failing in thromb olytic therapy, and higher FMPV/Amax level than controls. D dimer, a surrogate of thrombolytic activity increased markedly and Fg significantly declined afte r thrombolytic therapy(P< 0.05).Conclusions. Thrombin generation occurred in plasma in response to excess fibri nolysis induced by thrombolytic therapy. Both urokinase and rt PA had procoagul ant action. This transient activation of the coagulant system might contribute t o early reocclusion. These data provided the theoretical support for simultaneou s administration of anticoagulant therapy with thrombolytic agents. These result s also suggested that TAT might be useful in predicting clinical outcomes of p atients treated with thrombolytic therapy for AMI.

Comparison of the curative effect of intracoronary retrograde thrombolysis and thrombus aspiration combined with stent implantation on STEMI patients

Objective:To evaluate the short-term and long-term curative effects of precise intracoronary retrograde thrombolysis combined with stent implantation,thrombus aspiration combined with stent implantation,and traditional stent implantation in patients with acute ST-segment elevation myocardial infarction.Methods:From January 2018 to October 2019,184 patients diagnosed with acute ST-segment elevation myocardial infarction and infarction-related arterial blood flow TIMI 0 grade in the First Affiliated Hospital of Hainan Medical College and percutaneous coronary intervention(PCI)were selected.According to different surgical methods,patients were divided into intracoronary retrograde thrombolysis combined with stent implantation group(thrombolysis group,n=57 cases),thrombus aspiration combined with stent implantation group(aspiration group,n=57 cases)),traditional stent implantation group(traditional group,n=70 cases).Compare the incidence of no-reflow phenomenon after percutaneous coronary intervention,the rate of 1 hour ST_segment fall≥50%in the ECG after PCI,and the main adverse cardiovascular events(MACE)during hospitalization;compare the left ventricular end-diastolic diameter(LVEDD)、left ventricular ejection fraction(LVEF)and major adverse cardiovascular events at 1 year after PCI.Results:1.The short-term effects:The incidence of no-reflow phenomenon in the thrombolytic group was lower than that of the aspiration group and the traditional group,and the rate of 1hSTR≥50%was higher than that of the aspiration group and the traditional group,the difference was statistically significant(P<0.05).2.The long-term effects:1 year after percutaneous coronary intervention,the LVEDD of the thrombolytic group was lower than that of the aspiration group and the traditional group,while the LVEF was higher than the aspiration group and the traditional group,and the incidence of major adverse cardiovascular events in the thrombolytic group at was lowest,both the difference was statistically significant(P<0.05).Conclusion:The application of intracoronary retrograde thrombolysis combined with stent implantation in STEMI patients can reduce the occurrence of no-reflow,improve long-term cardiac function,and reduce the occurrence of major adverse cardiovascular events for short-term and long-term.

Effect of bivalirudin on myocardial microcirculation and adverse events after interventional therapy in older patients with acute coronary syndrome

BACKGROUND Bivalirudin,a direct thrombin inhibitor,is used in anticoagulation therapies as a substitute for heparin,especially during cardiovascular procedures such as percutaneous coronary intervention.AIM To explore the effect of bivalirudin on myocardial microcirculation following an intervention and its influence on adverse cardiac events in elderly patients with acute coronary syndrome(ACS).METHODS In total,165 patients diagnosed with acute myocardial at our hospital between June 2020 and June 2022 were enrolled in this study.From June 2020 to June 2022,elderly patients with ACS with complete data were selected and treated with interventional therapy.The study cohort was randomly divided into a study group(n=80,administered bivalirudin)and a control group(n=85,administered unfractionated heparin).Over a 6-mo follow-up period,differences in emergency processing times,including coronary intervention,cardiac function indicators,occurrence of cardiovascular events,and recurrence rates,were analyzed.RESULTS Significant differences were observed between the study cohorts,with the observation group showing shorter emergency process times across all stages:Emergency classification;diagnostic testing;implementation of coronary intervention;and conclusion of emergency treatment(P<0.05).Furthermore,the left ventricular ejection fraction in the observation group was significantly higher(P<0.05),and the creatine kinase-MB and New York Heart Association scores were CONCLUSION In elderly patients receiving interventional therapy for ACS,bivalirudin administration led to increased activated clotting time achievement rates,enhanced myocardial reperfusion,and reduced incidence of bleeding complications and adverse cardiac events.

Characterization of CD8＋CD57＋ T cells in patients wit acute myocardial infarction

Although T cells are known to be involved in the pathogenesis of coronary artery disease, it is unclear which subpopulation of T cells contributes to pathogenesis in acute myocardial infarction （MI）. We studied the immunological characteristics and clinical impact of CD8＋CD57＋ T cells in acute MI patients. The frequency of CD57＋ cells among CD8＋ T cells was examined in peripheral blood sampled the morning after acute MI events. Interestingly, the frequency of CD57＋ cells in the CD8＋ T-cell population correlated with cardiovascular mortality 6 months after acute MI. The immunological characteristics of CD8＋CD57＋ T cells were elucidated by surface immunophenotyping, intracellular cytokine staining and flow cytometry. Immunophenotyping revealed that the CD8＋CD57＋ T cells were activated, senescent T cells with pro-inflammatory and tissue homing properties. Because a high frequency of CD8＋CD57＋ T cells is associated with short-term cardiovascular mortality in acute MI patients, this specific subset of CD8＋ T cells might contribute to acute coronary events via their pro-inflammatory and high cytotoxic capacities. Identification of a pathogenic CD8＋ T-cell subset expressing CD57 may offer opportunities for the evaluation and management of acute MI.

Penetrating Atherosclerotic Ulcer with Elevated Troponin in A Patient with Old Myocardial Infarction: A Case Report

Penetrating atherosclerotic ulcer(PAU),an uncommon etiology of acute aortic syndrome(AAS),is a potential cause of chest pain seen in emergency departments.As PAU may lead to electrocardiogram(ECG)changes or rarely,elevated troponin levels,it is most likely misdiagnosed as acute coronary syndrome(ACS).Hence,individuals with PAU may be offered potentially life-threatening treatment.This paper reports a case of a 81-year-old male who presented with intermittent chest pain with a history of old inferior myocardial infarction and stent placement in the left circumflex coronary artery(LCX)three years ago.Initially,he was diagnosed with non-ST-elevation myocardial infarction(NSTEMI)based on abnormal ECG changes and raised troponin I.However,emergency coronary angiography(CAG)showed no restenosis in the left circumflex coronary artery(LCX)but with mild stenosis in the left anterior descending artery(LAD)and right coronary artery(RCA).Computed tomographic angiography(CIA)of the whole aorta showed multiple atherosclerotic plaques with penetrating atherosclerotic ulcer in the aortic arch and descending aorta.Endovascular aortic repair with Ankura II covered stent was performed.This case study reminds us that it is clinically difficult to distinguish PAU from ACS.Upon excluding ACS from the diagnosis,we should take into consideration of PAU,especially in elderly patients with positive cTnI.

胸痛发作时床边即时检测心肌钙蛋白T诊断急性心肌梗死的价值

目的确定胸痛症状发作后不同时间间隔内,床边心肌肌钙蛋白T(point of care troponin-T testing,POCT-cTnT)对急性心肌梗死(acute myocardial infarction,AMI)的诊断性能,了解其在快速排除AMI方面的意义。方法这项回顾性研究包括了2019年1月至2022年12月期间出现胸痛症状的6024例患者。在入院时测量了POCT-cTnT和中心实验室cTnI水平。通过按时间窗口划分的受试者工作特征(receiver operating characteristics,ROC)分析,评估POCT-cTnT在诊断AMI时的准确性。结果总体而言,POCT-cTnT诊断AMI的AUC为0.826(95%CI:0.816~0.836),灵敏度和特异度分别为72.81%和86.26%。根据胸痛发作的时间进行区间分组(<3 h、3~6 h、6~12 h、12~24 h、24~72 h和≥72 h),6~12 h以后的分组AUC值分别为0.918、0.928、0.920和0.908,差异无统计学意义(P>0.05),均要高于6 h时以内的组(P<0.001);根据胸痛发作时间点进行分组,≥8 h组的AUC为0.921,阴性预测值(negative predictive value,NPV)98.1%和阴性似然比(negative likelihood ratio,-LR)0.11,其AUC高于≥3 h、≥2 h、≥1 h和overall组(P<0.05),而与≥4 h以后的各时间组相比,差异无统计学意义(P>0.05)。结论胸痛发作时间对单次检测POCT-cTnT诊断AMI的性能存在一定的影响,结合胸痛发作至就诊时间,可能提高其诊断或排除AMI的可靠性。在胸痛发作4 h后,单次POCT-cTnT检测能可靠地诊断或排除AMI;当胸痛发作8 h后,其诊断或排除AMI方面具有更高的可靠性。

AMI患者PCI术后心电图ST-T、Tp-e/QT比值及其与预后的相关性

目的研究急性心肌梗死(AMI)患者经皮冠状动脉介入(PCI)术后心电图ST-T、T波峰末间期(Tp-e)/QT比值及其与预后的相关性。方法回顾性分析2021年2月至2023年4月南阳市第二人民医院收治的120例AMI患者的临床资料,根据PCI术后6个月患者的预后情况分为预后不良组(n=18)和预后良好组(n=102),比较两组患者PCI术后ST-T段回落情况、术前Tp-e/QT比值,采用多因素COX回归分析AMI患者PCI术后预后的影响因素,绘制受试者工作特征(ROC)曲线分析ST-T段回落、术前Tp-e/QT比值对AMI患者预后的预测价值。结果预后不良组患者的ST-T段<50%、术前Tp-e/QT比值分别为77.78%、0.34±0.05,明显高于预后良好组的13.73%、0.27±0.04,差异均有统计学意义(P<0.05);COX回归分析结果显示,ST-T段<50%、术前Tp-e/QT比值均是AMI患者PCI术后预后的危险因素(P<0.05);ROC曲线分析结果显示,ST-T段回落、术前Tp-e/QT比值对AMI患者PCI术后预后预测的曲线下面积(AUC)分别为0.686、0.747,特异度分别为61.50%、81.42%,敏感度分别为80.00%、85.31%。结论AMI患者心电图ST-T段回落不良、Tp-e/QT比值增加是PCI术后预后不良的危险因素,临床应加强对此类患者的干预,以减少心血管不良事件的发生。

GRACE、TIMI评分对非ST段抬高型急性冠状动脉综合征患者不良心血管事件的评估价值

目的探讨全球急性冠状动脉事件注册(GRACE)评分、心肌梗死溶栓治疗(TIMI)评分对非ST段抬高型急性冠状动脉综合征(NSTE-ACS)患者不良心血管事件的评估价值。方法回顾性收集2020年1月~2023年11月新疆维吾尔自治区人民医院治疗的257例NSTE-ACS患者的临床资料。根据GRACE和TIMI评分将患者分为低危组、中危组、高危组。统计患者发病30 d内不良心血管事件的发生情况,并对不同风险分层患者不良心血管事件的发生率进行比较,计算受试者工作特征(ROC)曲线的曲线下面积(AUC),评估GRACE、TIMI评分对NSTE-ACS患者不良心血管事件的评估价值。结果TIMI评分系统的低危患者比例为23.35%(60/257),与GRACE评分系统的18.68%(48/257)比较,差异无统计学意义(P>0.05);TIMI评分系统的中危患者比例为62.65%(161/257),高于GRACE评分系统的40.47%(104/257);TIMI评分系统的高危患者比例为14.00%(36/257),低于GRACE评分系统的40.86%(105/257),差异均有统计学意义(t=25.308、48.101,P<0.05)。两种评分系统不同分层患者不良心血管事件总发生率比较,差异有统计学意义(χ^(2)=24.403,P<0.05);死亡率比较,差异无统计学意义(χ^(2)=0.778,P>0.05)。GRACE评分预测NSTE-ACS患者不良心血管事件的AUC为0.756,高于TIMI评分的0.603。结论GRACE和TIMI风险评分对于NSTE-ACS患者近期心血管不良事件的发生均有一定的适用性,GRACE评分的预测价值更高。

血清脑钠肽、心肌肌钙蛋白T及休克指数与急性心肌梗死患者经皮冠脉介入术后主要不良心血管事件的相关性分析

目的 探讨血清脑钠肽(BNP)、心肌肌钙蛋白T(c Tn T)及休克指数(SI)与急性心肌梗死(AMI)患者经皮冠脉介入术(PCI)后主要不良心血管事件(MACE)的相关性。方法 回顾性分析2017年11月至2022年11月于徐州医科大学附属医院、江苏省滨海县人民医院进行PCI治疗的200例AMI患者的临床资料,将其分为MACE组(60例)与无MACE组(140例)。比较两组基线资料、血管狭窄程度(Gensini)评分、总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)及术前白蛋白、BNP、c Tn T、SI。采用logistic逐步回归分析MACE的危险因素,通过受试者工作特征(ROC)曲线分析各指标预测MACE的价值。结果 MACE组糖尿病患者占比及年龄、BNP、c Tn T、SI水平高于无MACE组(P<0.05)。logistic逐步回归分析结果显示,年龄(OR=2.145,95%CI=1.056~4.357)、BNP (OR=1.985,95%CI=1.156~3.408)、c Tn T (OR=1.997,95%CI=1.145~3.483)、SI(OR=1.897,95%CI=1.260~3.196)是AMI患者PCI治疗后MACE发生的危险因素(P<0.05)。ROC曲线分析结果显示,年龄、BNP、c Tn T、SI均可用于预测AMI患者PCI治疗后MACE的发生(P<0.05)。结论 年龄、BNP、c Tn T、SI可影响AMI患者PCI治疗后MACE的发生,可用于预测MACE的发生。

Characteristics of elevated cardiac troponin I in patients with acute ischemic stroke

Objective To study prognostic characteristics of cardiac troponin I （cTnI） elevation in acute ischemic stroke. Methods We retrospectively studied patients （n = 248） with acute ischemic stroke, acute ST-segment elevation myocardial infarction, and acute non-ST-elevation myocardial infarction who were treated between January 2013 and October 2015. Baseline demographic data and changes in cTnI levels among these three groups were compared. Patients with acute ischemic stroke were assigned to either the cTnI elevation group （cTnI 〉 0.034 ng/mL） or the no cTnI elevation group （cTnI ≤ 0.034 ng/mL）. Logistic regression analysis was used to identify risk factors associated with elevated serum cTnI in patients with acute ischemic stroke. Moreover, the duration of hospital stay and incidence of major cardiovascular outcomes were compared in patients with acute ischemic stroke, with or without elevated cTnI. Results In this study population of patients with acute ischemic stroke （n = 178）, acute ST-segment elevation myocardial infarction （n = 35）, and acute non-ST-elevation myocardial infarction （n = 35）, patients with acute ischemic stroke with elevated cTnI comprised 18.54% of subjects. Patients with elevated cTnI were older and more likely to have a history of hypertension. In addition, these patients had higher levels of inflammatory markers, reduced renal functions, increased D-dimer levels, higher NIH stroke scores, and lower left ventricular ejection fractions. Logistic regression analysis showed that both percentage of neutrophil and NIH stroke scores were elevated; estimated glomerular filtration rate and left ventricular ejection fraction were decreased in patients with acute ischemic stroke who had elevated cTnI, and they had more frequent major cardiovascular events during hospital stay. Conclusion Elevated cTnI detected in patients with acute ischemic stroke, indicated a greater likelihood of poor short-term prognosis during hospital stay.

SYNTAX积分联合血清NT-pro BNP、CK-MB、cTnI水平对急性心肌梗死患者PCI术预后的评估价值

目的探讨SYNTAX积分联合血清N末端钠尿肽前体(NT-pro BNP)、肌酸激酶同工酶(CK-MB)、心肌钙蛋白(cTnI)水平评估急性心肌梗死(AMI)患者经皮冠状动脉介入治疗(PCI)术预后的价值。方法选取2020年1月—2022年11月我院85例行PCI术的AMI患者为研究对象,根据患者术后是否存在主要不良心脑血管事件(MACCE)分为预后良好组(n=63)和预后不良组(n=22),术前均行冠脉造影,采用SYNTAX积分评估患者冠脉变程度,住院期间常规测定患者血清NT-pro BNP、CK-MB、cTnI水平,术后随访半年。比较两组一般临床资料、SYNTAX积分及血清NT-pro BNP、CK-MB、cTnI水平,采用多因素Logistic回归分析法分析影响AMI患者PCI术预后的危险因素,采用受试者工作曲线分析SYNTAX积分联合血清NT-pro BNP、CK-MB、cTnI水平对AMI患者PCI术预后的评估价值。结果两组性别、年龄、BMI、合并高血压、糖尿病、血清TC、TG、HDL-C、LDL-C、Scr、LVEF、LVEDD比较,差异无统计学意义(P>0.05),Killip分级、病变支数分布、支架置入数、介入治疗时间、住院时间比较,差异均有统计学意义(P<0.05);预后不良组SYNTAX积分、血清NT-pro BNP、CK-MB、cTnI水平均显著高于预后良好组(P<0.05);多因素Logistic回归分析显示,病变支数、支架置入数、SYNTAX积分、血清NT-pro BNP、CK-MB、cTnI水平是影响AMI患者PCI术预后的危险因素(P<0.05);ROC曲线显示,SYNTAX积分、NT-pro BNP、CK-MB、cTnI单独及联合预测AMI患者PCI术预后的AUC分别为0.747、0.754、0.752、0.881、0.952。结论SYNTAX积分、血清NT-pro BNP、CK-MB、cTnI水平单独或联合检测均可有效预测AMI患者PCI术后MACCE的发生,联合检测预测效能显著提升。