MI, myocardial infarction

MI,心肌梗死
  • 文章类型: Journal Article
    许多研究已经建立了炎症复合体内的基因变异与不同种族的牙周炎和心血管疾病发病率之间的联系。本研究探讨PYCARD基因多态性与牙周病和冠心病(CHD)易感性的关系及其与临床牙周指标的相关性。共有120名参与者报名参加,分为四组:30名健康对照(C),30例广泛性牙周炎(P),30例动脉粥样硬化性冠心病,但临床健康的牙周组织(AS-C),和30名同时患有动脉粥样硬化性CHD和广泛性牙周炎(AS-P)的患者。我们记录了人口统计数据,采集血液样本,测量牙周指数,包括菌斑指数,临床附着丧失,探查时出血,和口袋深度。使用常规聚合酶反应分析PYCARD基因的基因组变体。在P组中观察到T和G等位基因突变的显着患病率以及PYCARDC/T(rs8056505)和PYCARDA/G(rs372507365)中CT和TT基因型的分布较高,AS-P,和AS-C这些单核苷酸多态性(SNP)也与临床牙周炎指数的严重程度呈正相关。我们的研究结果表明,T和G等位基因的频率增加和CT的分布,TT,PYCARDSNP中的AG基因型与牙周病和CHD风险升高显著相关。这些SNP可能参与这些病症的发病机理。该研究加强了这些遗传标记作为伊拉克人口中两种疾病的危险因素的潜在作用。
    Numerous studies have established a link between gene variants within the inflammasome complex and the incidence of periodontitis and cardiovascular illness across various ethnic groups. This study investigated the association between PYCARD gene polymorphism and susceptibility to periodontal disease and coronary heart disease (CHD) and their correlation with clinical periodontal indices. A total of 120 participants were enrolled, categorized into four groups: 30 healthy controls (C), 30 patients with generalized periodontitis (P), 30 patients with atherosclerotic CHD but clinically healthy periodontium (AS-C), and 30 patients with both atherosclerotic CHD and generalized periodontitis (AS-P). We recorded demographic data, collected blood samples, and measured periodontal indices, including plaque index, clinical attachment loss, bleeding on probing, and pocket depth. The genomic variant of the PYCARD gene was analyzed using a conventional polymerase reaction. A significant prevalence of T and G allele mutations and a higher distribution of CT and TT genotypes in PYCARD C/T (rs8056505) and the AG genotype in PYCARD A/G (rs372507365) were observed in groups P, AS-P, and AS-C. These single nucleotide polymorphisms (SNPs) were also positively correlated with the severity of clinical periodontitis indices. Our findings suggest that the increased frequency of T and G alleles and the distribution of CT, TT, and AG genotypes in PYCARD SNPs are significantly associated with an elevated risk for periodontal disease and CHD. These SNPs may participate in the pathogenesis of these conditions. The study reinforces the potential role of these genetic markers as risk factors for both diseases in the Iraqi population.
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  • 文章类型: Case Reports
    从心肌梗死后的假性左心室动脉瘤中认识到真实对于指导临床管理和确定手术紧迫性的需求至关重要。我们讨论了一个梗塞后假性动脉瘤的病例,该病例提出了独特的解剖挑战,并且可能拥有超出当前诊断标准的秘密“达芬奇密码”。(难度等级:高级。).
    Recognizing true from pseudo left ventricular aneurysm after myocardial infarction is paramount to guide clinical management and determine need for surgical urgency. We discuss a case of a postinfarction pseudoaneurysm that poses unique anatomic challenges and may hold a secret \"DaVinci code\" beyond current diagnostic criteria. (Level of Difficulty: Advanced.).
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  • 文章类型: Journal Article
    炎症是心血管结局的关键决定因素,但其在心力衰竭中的作用尚不确定。在前瞻性的心脏代谢疾病患者中,CIRT(心血管炎症减少试验)的多中心辅助研究,CIRT-CFR(评估心血管炎症的冠状动脉血流储备),尽管血脂控制良好,但冠状动脉血流储备受损与炎症和心肌应变增加独立相关,血糖,和血液动力学曲线。炎症改变了CFR与心肌劳损的关系,破坏心脏血流和功能之间的联系。需要进一步的研究来研究早期炎症介导的CFR捕获微血管缺血的减少是否可能导致心脏代谢疾病患者的心力衰竭。(心血管炎症减少试验[CIRT];NCT01594333;评估心血管炎症的冠状动脉血流储备[CIRT-CFR];NCT02786134)。
    Inflammation is a key determinant of cardiovascular outcomes, but its role in heart failure is uncertain. In patients with cardiometabolic disease enrolled in the prospective, multicenter ancillary study of CIRT (Cardiovascular Inflammation Reduction Trial), CIRT-CFR (Coronary Flow Reserve to Assess Cardiovascular Inflammation), impaired coronary flow reserve was independently associated with increased inflammation and myocardial strain despite well-controlled lipid, glycemic, and hemodynamic profiles. Inflammation modified the relationship between CFR and myocardial strain, disrupting the association between cardiac blood flow and function. Future studies are needed to investigate whether an early inflammation-mediated reduction in CFR capturing microvascular ischemia may lead to heart failure in patients with cardiometabolic disease. (Cardiovascular Inflammation Reduction Trial [CIRT]; NCT01594333; Coronary Flow Reserve to Assess Cardiovascular Inflammation [CIRT-CFR]; NCT02786134).
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  • 文章类型: Journal Article
    UNASSIGNED:完全血运重建(CR)或不完全血运重建(IR)是否会影响PCI后的长期结局)和冠状动脉旁路移植术(CABG)治疗左主干冠状动脉(LMCA)疾病尚不清楚。
    UNASSIGNED:作者试图评估CR或IR对LMCA疾病PCI或CABG术后10年结局的影响。
    UNASSIGNED:在PRECOMBAT(左主干冠状动脉疾病患者使用西罗莫司洗脱支架进行旁路手术与血管成形术的随机比较)中,为期10年的扩展研究,作者根据血运重建的完整性评估了PCI和CABG对长期结局的影响.主要结局是主要不良心脑血管事件(MACCE)的发生率(任何原因的复合死亡率,心肌梗塞,中风,或缺血驱动的靶血管血运重建)。
    未经证实:在600名随机患者中(PCI,n=300和CABG,n=300),416例(69.3%)患者有CR,184例(30.7%)患者有IR;68.3%的PCI患者和70.3%的CABG患者有CR,分别。在CR患者中,PCI和CABG之间的10年MACCE率没有显着差异(27.8%vs25.1%,分别;调整后的HR:1.19;95%CI:0.81-1.73)和有IR的人群(31.6%vs21.3%,分别;调整后的HR:1.64;95%CI:0.92-2.92)(交互作用的P=0.35)。CR状态与PCI和CABG对全因死亡率的相对影响之间也没有显着交互作用。严重的复合死亡,心肌梗塞,或中风,并重复血运重建。
    未经评估:在这10年的后续行动中,作者发现,根据CR或IR状态,PCI和CABG在MACCE和全因死亡率方面没有显著差异.(预打击试验[预打击]十年成果,NCT03871127;左主干冠状动脉疾病患者使用西罗莫司洗脱支架进行旁路手术与血管成形术的随机组合比较[PRECOMBAT],NCT00422968)。
    UNASSIGNED: Whether complete revascularization (CR) or incomplete revascularization (IR) may affect long-term outcomes after PCI) and coronary artery bypass grafting (CABG) for left main coronary artery (LMCA) disease is unclear.
    UNASSIGNED: The authors sought to assess the impact of CR or IR on 10-year outcomes after PCI or CABG for LMCA disease.
    UNASSIGNED: In the PRECOMBAT (Premier of Randomized Comparison of Bypass Surgery versus Angioplasty Using Sirolimus-Eluting Stent in Patients with Left Main Coronary Artery Disease) 10-year extended study, the authors evaluated the effect of PCI and CABG on long-term outcomes according to completeness of revascularization. The primary outcome was the incidence of major adverse cardiac or cerebrovascular events (MACCE) (composite of mortality from any cause, myocardial infarction, stroke, or ischemia-driven target vessel revascularization).
    UNASSIGNED: Among 600 randomized patients (PCI, n = 300 and CABG, n = 300), 416 patients (69.3%) had CR and 184 (30.7%) had IR; 68.3% of PCI patients and 70.3% of CABG patients underwent CR, respectively. The 10-year MACCE rates were not significantly different between PCI and CABG among patients with CR (27.8% vs 25.1%, respectively; adjusted HR: 1.19; 95% CI: 0.81-1.73) and among those with IR (31.6% vs 21.3%, respectively; adjusted HR: 1.64; 95% CI: 0.92-2.92) (P for interaction = 0.35). There was also no significant interaction between the status of CR and the relative effect of PCI and CABG on all-cause mortality, serious composite of death, myocardial infarction, or stroke, and repeat revascularization.
    UNASSIGNED: In this 10-year follow-up of PRECOMBAT, the authors found no significant difference between PCI and CABG in the rates of MACCE and all-cause mortality according to CR or IR status. (Ten-Year Outcomes of PRE-COMBAT Trial [PRECOMBAT], NCT03871127; PREmier of Randomized COMparison of Bypass Surgery Versus AngioplasTy Using Sirolimus-Eluting Stent in Patients With Left Main Coronary Artery Disease [PRECOMBAT], NCT00422968).
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  • 文章类型: Journal Article
    未经证实:患有冠状动脉疾病和肾功能受损的患者在经皮冠状动脉介入治疗(PCI)后发生出血和缺血性不良事件的风险更高。
    UNASSIGNED:本研究评估了基于普拉格雷的降阶梯策略在肾功能受损患者中的疗效和安全性。
    未经评估:我们对HOST-REDUCE-POLYTECH-ACS研究进行了事后分析。将具有估计肾小球滤过率(eGFR)的患者(n=2,311)分为3组。(高eGFR:>90mL/min;中等eGFR:60至90mL/min;和低eGFR:<60mL/min)。终点是出血结果(出血学术研究联盟2型或更高),缺血性结局(心血管死亡,心肌梗塞,支架内血栓形成,反复血运重建,和缺血性中风),和1年随访时的净不良临床事件(包括任何临床事件)。
    未经评估:无论基线肾功能如何,普拉格雷降阶梯都是有益的(相互作用的P=0.508)。低eGFR组的普拉格雷降低出血风险的相对降低高于中eGFR组和高eGFR组(相对降低,分别为:64%(HR:0.36;95%CI:0.15-0.83)vs50%(HR:0.50;95%CI:0.28-0.90)和52%(HR:0.48;95%CI:0.21-1.13)(相互作用的P=0.646)。在所有eGFR组中,prasgurel降低的缺血性风险并不显著(HR:1.18[95%CI:0.47-2.98],HR:0.95[95%CI:0.53-1.69],和HR:0.61[95%CI:0.26-1.39])(交互作用的P=0.119)。
    UNASSIGNED:在接受PCI的急性冠脉综合征患者中,无论基线肾功能如何,普拉格雷剂量降低都是有益的。
    UNASSIGNED: Patients with coronary artery disease and impaired renal function are at higher risk for both bleeding and ischemic adverse events after percutaneous coronary intervention (PCI).
    UNASSIGNED: This study assessed the efficacy and safety of a prasugrel-based de-escalation strategy in patients with impaired renal function.
    UNASSIGNED: We conducted a post hoc analysis of the HOST-REDUCE-POLYTECH-ACS study. Patients with available estimated glomerular filtration rate (eGFR) (n = 2,311) were categorized into 3 groups. (high eGFR: >90 mL/min; intermediate eGFR: 60 to 90 mL/min; and low eGFR: <60 mL/min). The end points were bleeding outcomes (Bleeding Academic Research Consortium type 2 or higher), ischemic outcomes (cardiovascular death, myocardial infarction, stent thrombosis, repeated revascularization, and ischemic stroke), and net adverse clinical event (including any clinical event) at 1-year follow-up.
    UNASSIGNED: Prasugrel de-escalation was beneficial regardless of baseline renal function (P for interaction = 0.508). The relative reduction in bleeding risk from prasugrel de-escalation was higher in the low eGFR group than in both the intermediate and high eGFR groups (relative reductions, respectively: 64% (HR: 0.36; 95% CI: 0.15-0.83) vs 50% (HR: 0.50; 95% CI: 0.28-0.90) and 52% (HR: 0.48; 95% CI: 0.21-1.13) (P for interaction = 0.646). Ischemic risk from prasgurel de-escalation was not significant in all eGFR groups (HR: 1.18 [95% CI: 0.47-2.98], HR: 0.95 [95% CI: 0.53-1.69], and HR: 0.61 [95% CI: 0.26-1.39]) (P for interaction = 0.119).
    UNASSIGNED: In patients with acute coronary syndrome receiving PCI, prasugrel dose de-escalation was beneficial regardless of the baseline renal function.
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  • 文章类型: Journal Article
    未经证实:经皮冠状动脉介入治疗(PCI)期间使用血管内超声(IVUS)或光学相干断层扫描(OCT)进行血管内成像可改善预后。但是这些技术以前在现实世界中没有得到充分利用。我们的目的是研究过去十年来美国血管内成像引导PCI使用的变化,并评估心肌梗死(MI)PCI后血管内成像与临床结局之间的关系。
    UNASSIGNED:我们调查了2008年至2019年的全国住院患者样本,以计算IVUS或OCT指导下MI的PCI数量。使用Cochran-Armitage趋势检验或简单线性回归分析分类或连续结果的时间趋势。分别。多变量逻辑回归用于比较有和没有血管内成像的PCI后的结果。
    UNASSIGNED:对MI进行了2,881,746次PCI。IVUS引导的PCI数量增加了309.9%,从2008年的6,180个增加到2019年的25,330个(P趋势<0.001)。PCI中IVUS的使用比例从2008年的3.4%增加到2019年的8.7%(P趋势<0.001)。OCT引导的PCIs数量增加了548.4%,从2011年的246个增加到2019年的1,595个(P趋势<0.001)。所有PCI中OCT引导的百分比从2008年的0.0%增加到2019年的0.6%(P趋势<0.001)。血管内成像引导的PCI与住院死亡率的几率较低相关(校正比值比0.66,95%置信区间0.60-0.72,p<0.001)。
    UNASSIGNED:尽管血管内成像引导的PCI的数量一直在增加,尽管血管内成像与较低的死亡率相关,但仍较差.
    UNASSIGNED: Intravascular imaging with either intravascular ultrasound (IVUS) or optical coherence tomography (OCT) during percutaneous coronary intervention (PCI) is associated with improved outcomes, but these techniques have previously been underutilized in the real world. We aimed to examine the change in utilization of intravascular imaging-guided PCI over the past decade in the United States and assess the association between intravascular imaging and clinical outcomes following PCI for myocardial infarction (MI).
    UNASSIGNED: We surveyed the National Inpatient Sample from 2008 to 2019 to calculate the number of PCIs for MI guided by IVUS or OCT. Temporal trends were analyzed using Cochran-Armitage trend test or simple linear regression for categorical or continuous outcomes, respectively. Multivariable logistic regression was used to compare outcomes following PCI with and without intravascular imaging.
    UNASSIGNED: A total of 2,881,746 PCIs were performed for MI. The number of IVUS-guided PCIs increased by 309.9 % from 6,180 in 2008 to 25,330 in 2019 (P-trend < 0.001). The percentage of IVUS use in PCIs increased from 3.4 % in 2008 to 8.7 % in 2019 (P-trend < 0.001). The number of OCT-guided PCIs increased 548.4 % from 246 in 2011 to 1,595 in 2019 (P-trend < 0.001). The percentage of OCT guidance in all PCIs increased from 0.0 % in 2008 to 0.6 % in 2019 (P-trend < 0.001). Intravascular imaging-guided PCI was associated with lower odds of in-hospital mortality (adjusted odds ratio 0.66, 95 % confidence interval 0.60-0.72, p < 0.001).
    UNASSIGNED: Although the number of intravascular imaging-guided PCIs have been increasing, adoption of intravascular imaging remains poor despite an association with lower mortality.
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  • 文章类型: Journal Article
    目前,中风风险被估计为心血管疾病(CVD)复合风险的一部分。我们调查了复合CVD风险预测工具QRISK3和集合队列方程-PCE,来自中年人,与卒中特异性弗雷明汉卒中风险概况-FSRP和QStroke一样好,可以捕获老年人卒中的真实风险。在英国区域心脏研究的男性(60-79y)中进行了10y卒中结局的外部验证。在单独的验证样本(FSRPn=3762,QStroken=3376,QRISK3n=2669和PCEn=3047)中评估歧视和校准,并/不调整竞争风险。使用观察到的和临床推荐的阈值检查敏感性/特异性。FSRP的性能,QStroke和QRISK3在2441名没有心血管疾病的男性中进行了头对头的比较,包括跨年龄组。观察到的10y风险(/1000PY)范围为6.8(硬性中风)至11(中风/短暂性脑缺血发作)。所有工具歧视都很弱,C指数0.63-0.66。FSRP和QStroke在更高的预测概率下高估了风险。QRISK3和PCE总体上显示出合理的校准,在整个风险范围内略有错误估计。在调整竞争性非中风死亡后,性能恶化。然而,在没有心血管疾病的男性中,QRISK3显示出相对更好的中风事件校准,即使在对竞争性死亡进行调整之后,包括最年长的男人。使用观察到的风险作为截止值,所有工具均显示出相似的灵敏度(63-73%)和特异性(52-54%)。当使用CVD预防阈值评估QRISK3和PCE时,对卒中事件的敏感性为99%,97%的假阳性率提示现有的干预阈值可能需要重新检查以反映年龄相关的卒中负担.
    Stroke risk is currently estimated as part of the composite risk of cardiovascular disease (CVD). We investigated if composite-CVD risk prediction tools QRISK3 and Pooled Cohort Equations-PCE, derived from middle-aged adults, are as good as stroke-specific Framingham Stroke Risk Profile-FSRP and QStroke for capturing the true risk of stroke in older adults. External validation for 10y stroke outcomes was performed in men (60-79y) of the British Regional Heart Study. Discrimination and calibration were assessed in separate validation samples (FSRP n = 3762, QStroke n = 3376, QRISK3 n = 2669 and PCE n = 3047) with/without adjustment for competing risks. Sensitivity/specificity were examined using observed and clinically recommended thresholds. Performance of FSRP, QStroke and QRISK3 was further compared head-to-head in 2441 men free of a range of CVD, including across age-groups. Observed 10y risk (/1000PY) ranged from 6.8 (hard strokes) to 11 (strokes/transient ischemic attacks). All tools discriminated weakly, C-indices 0.63-0.66. FSRP and QStroke overestimated risk at higher predicted probabilities. QRISK3 and PCE showed reasonable calibration overall with minor mis-estimations across the risk range. Performance worsened on adjusting for competing non-stroke deaths. However, in men without CVD, QRISK3 displayed relatively better calibration for stroke events, even after adjustment for competing deaths, including in oldest men. All tools displayed similar sensitivity (63-73 %) and specificity (52-54 %) using observed risks as cut-offs. When QRISK3 and PCE were evaluated using thresholds for CVD prevention, sensitivity for stroke events was 99 %, with false positive rate 97 % suggesting existing intervention thresholds may need to be re-examined to reflect age-related stroke burden.
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  • 文章类型: Journal Article
    本文在最近的临床试验的背景下,提供了关于脑啡肽抑制在心力衰竭(HF)中的作用的当代综述和新观点,并解决了某些HF患者人群的潜在机制和未解决的问题。Neprilysin是一种内肽酶,可切割多种肽,例如利钠肽,缓激肽,肾上腺髓质素,P物质,血管紧张素I和II,和内皮素。它对心血管有广泛的作用,肾,肺,胃肠,内分泌,和神经功能。已经开发了联合的血管紧张素受体和脑啡肽抑制剂(ARNi),旨在增加血管舒张利钠肽并防止血管紧张素系统的反调节激活。ARNi治疗对于降低HF和纽约心脏协会功能II至III类症状患者的死亡和住院风险非常有效。但与血管紧张素转换酶抑制剂或血管紧张素受体阻滞剂相比,研究未能显示ARNi在射血分数降低的晚期HF患者或伴有左心室功能障碍但无HF的心肌梗死患者中的任何益处.这些提出了以下问题:当存在对利钠肽的反应的下游钝化时,利钠肽的酶促分解在晚期HF患者中或在不存在HF的心肌梗死后患者中是否可能不是非常有效的解决方案需要增加利钠肽的可用性。此外,需要进一步的研究来确定ARNi对蛋白尿的长期影响,肥胖,血糖控制和血脂,血压,HF患者的认知功能。
    This article provides a contemporary review and a new perspective on the role of neprilysin inhibition in heart failure (HF) in the context of recent clinical trials and addresses potential mechanisms and unanswered questions in certain HF patient populations. Neprilysin is an endopeptidase that cleaves a variety of peptides such as natriuretic peptides, bradykinin, adrenomedullin, substance P, angiotensin I and II, and endothelin. It has a broad role in cardiovascular, renal, pulmonary, gastrointestinal, endocrine, and neurologic functions. The combined angiotensin receptor and neprilysin inhibitor (ARNi) has been developed with an intent to increase vasodilatory natriuretic peptides and prevent counterregulatory activation of the angiotensin system. ARNi therapy is very effective in reducing the risks of death and hospitalization for HF in patients with HF and New York Heart Association functional class II to III symptoms, but studies failed to show any benefits with ARNi when compared with angiotensin-converting enzyme inhibitors or angiotensin receptor blocker in patients with advanced HF with reduced ejection fraction or in patients following myocardial infarction with left ventricular dysfunction but without HF. These raise the questions about whether the enzymatic breakdown of natriuretic peptides may not be a very effective solution in advanced HF patients when there is downstream blunting of the response to natriuretic peptides or among post-myocardial infarction patients in the absence of HF when there may not be a need for increased natriuretic peptide availability. Furthermore, there is a need for additional studies to determine the long-term effects of ARNi on albuminuria, obesity, glycemic control and lipid profile, blood pressure, and cognitive function in patients with HF.
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  • 文章类型: Case Reports
    在以下案例系列中,我们描述了2例具有不同潜在病理生理机制的非阻塞性冠状动脉心肌梗死患者的临床表现。在这两种情况下,心脏磁共振(CMR)成像利用常规参数标测技术和CMR指纹技术提供了全面的组织表征.这些病例证明了CMR在阐明潜在病因和适当治疗策略方面的诊断效用。(难度等级:高级。).
    In the following case series, we describe the clinical presentation of 2 patients with myocardial infarction with nonobstructive coronary arteries with different underlying pathophysiologic mechanisms. In both scenarios, cardiac magnetic resonance (CMR) imaging provided comprehensive tissue characterization with both conventional parametric mapping techniques and CMR fingerprinting. These cases demonstrate the diagnostic utility for CMR to elucidate the underlying etiology and appropriate therapeutic strategy. (Level of Difficulty: Advanced.).
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  • 文章类型: Case Reports
    自发性冠状动脉壁内血肿(SCIH)是一种罕见但未被诊断的疾病,动态进化。我们介绍了一名患有急性胸痛且冠状动脉造影正常的患者,该患者正在接受非阻塞性冠状动脉心肌梗死的检查。心脏磁共振显示缺血模式,随后的血管造影显示SCIH导致冠状动脉闭塞。(难度等级:中级。).
    Spontaneous coronary intramural hematoma (SCIH) is a rare but underdiagnosed condition, with dynamic evolution. We present a patient with acute chest pain and normal coronary angiogram undergoing work-up for myocardial infarction with nonobstructive coronary arteries. Cardiac magnetic resonance revealed an ischemic pattern, and subsequent angiography revealed coronary occlusion by SCIH. (Level of Difficulty: Intermediate.).
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