血B型钠尿肽与急性心肌梗死早期介入治疗预后的关系

目的:探讨急性心肌梗死(AMI)患者早期血运重建后,血B型钠尿肽(BNP)浓度的变化及其对患者临床预后的评价。方法:入选住院治疗的首次ST段抬高AMI112例患者:其中男74例,女38例,年龄36~88(62.8±12.6)岁,测定其入选时,入院后24h和7d的血BNP;根据发病6h内梗死相关血管开通情况分为6h开通组(69例)和6h未开通组(43例);入院后7d内行超声心动图检查,记录左室舒张末期容积指数(LVED-VI)、左室射血分数(LVEF)等;出院后随访24个月,记录其主要临床终点事件(心源性死亡、新发或恶化的心力衰竭、再发非致死性心肌梗死)。结果:2组AMI患者血BNP浓度在入院时无显著性差异,第24h及第7天,6h未开通组血BNP浓度明显较高(P<0.01)。2年内6h开通组与6h未开通组无事件生存率分别为85.50%和62.87%(P=0.001);LogisticRank分析显示6h未开通组与6h开通组相比2年无事件生存率低(P=0.003),BNP等指标预测AMI经直接介入治疗2年内心血管不良事件的ROC曲线显示,入院后24h的血BNP(BNP2)可作为预测2年内心血管不良事件的指标。结论...     

急性心肌梗死患者急诊PCI术后血浆B型钠尿肽水平变化及意义

目的 观察急性心肌梗死（AMI）患者血浆B型钠尿肽（BNP）水平变化,并分析其与左心室重构（LVRM）及预后的关系.方法 选择首次AMI住院患者112例,均行急诊经皮冠状动脉介入术（PCI）,梗死相关动脉（IRA）开通69例（开通组）、未开通43例（未开通组）.入院时检测心肌损伤指标[CK、CK-MB、肌钙蛋白I（cTnI）],入院第7天超声检查左心室射血分数（LVEF）、左心室舒张末期容积指数（LVEDVI）,测定入院时、AMI后24 h、入院第7天血浆BNP（记为BNP1、BNP2、BNP3）;术后随访2 a,记录心血管不良事件（MACE）发生情况.结果 两组入院时血清CK、CK-MB、cTnI、TG、LDL-C比较,P均＞0.05;入院后第7天,开通组较未开通组LVEF升高（P＜0.05）;两组BNP1差异无统计学意义,BNP2明显高于BNP1、BNP3（P均＜0.05）,未开通组BNP2、BNP3较开通组明显升高（P均＜0.01）.AMI患者3个时点血浆BNP与LVEDVI、CK、CK-MB、cTnI均呈正相关（P均＜0.01）,与LVEF呈负相关（P均＜0.01）.开通组2 a内发生MACE 10例,未开通组16例,P＜0.01;BNP2预测AMI急诊PCI患者2 a内MACE的ROC曲线下面积为0.791,P＜0.05;其分界值为332 ng/L时,预测MACE的敏感性为76.9％、特异性为73.3％.结论 AMI急诊PCI术后血浆BNP水平升高,其水平变化有助于判断IRA开通情况;AMI后24 h血浆BNP水平可预测患者MACE,有助于更早了解LVRM情况,以阻止或减缓AMI后心力衰竭的发生、发展.     

不同再灌注策略对急性心肌梗死患者血浆脑钠肽水平和短期预后的影响

目的 观察不同再灌注策略对急性心肌梗死(AMI)患者血浆脑钠肽(BNP)水平影响,并进一步探讨其对左心室重构和预后的意义.方法 急性ST段抬高性心肌梗死患者106例,分为直接PCI 组(n=40),溶栓组(n=23),择期PCI 组(n=25)和对照组(n=18).均于入院即刻、24h、入院后7d、l4d及28d测定血浆BNP 浓度;测定入院后7 d和28d 的LVEF;观察半年内主要心血管不良事件,以死亡为终点.结果 各组患者入院即刻血浆BNP 水平无明显差异.直接PCI组入院后各时间点BNP浓度均明显低于溶栓组和择期PCI 组(P＜0.01).直接PCI组入院后7d、28d LVEF 均高于溶栓组和择期PCI 组(P＜0.01).择期PCI组入院后28d LVEF较溶栓组高(P＜0.05).直接PCI组总心血管事件和死亡较对照组显著降低(P＜0.05或0.01);溶栓组和择期PCI 组心血管事件显著低于对照组(P＜0.05),但死亡率无明显差异(P＞0.05).结论 三种再灌注治疗均能降低急性心肌梗死患者血浆BNP 水平,提高LVEF值,减少心血管事件,其中以直接PCI疗效最为显著.     

血浆脑利钠肽水平与急性冠脉综合征预后关系的探讨

目的：探讨脑利钠肽（BNP）水平与急性冠状动脉综合征（ACS）预后的关系。方法：2005年2月～2007年8月所有入选158例ACS患者均检测入院后48h内及2周后的血浆BNP水平。根据住院期间不良心血管事件的出现而分成不良心血管事件组（62例）和无不良心血管事件组（96例），比较两组入院48h BNP（BNP1）、2周后BNP（BNP2）、2周BNP变化幅度值（ABNP％=（BNP1-BNP2）／BNP1×100％）。结果：有不良心血管事件组的BNP1、BNP2水平显著高于无不良心血管事件组（P〈0．01），而ABNP％低于无不良心血管事件组，说明无不良心血管事件者恢复得较快。结论：BNP是评价ACS预后重要指标之一。     

血浆三种标志物变化在晚期心力衰竭患者心血管事件预测中的初步分析

目的 :观察晚期心力衰竭(心衰)患者治疗过程中血浆三种标志物早期的动态变化,并探讨这种变化在心血管事件预测中的价值。方法 :入选2013-10至2014-01阜外心血管病医院心衰中心住院的晚期心衰患者64例。分别测定患者入院时、3天及6天血浆N末端B型利钠肽原(NT-pro BNP)、B型利钠肽(BNP)及可溶性生长刺激表达基因2蛋白(s ST2)的水平,终点事件为心衰再住院、心脏移植或心血管死亡。随访观察6个月后根据是否发生心血管事件与否分为发生心血管事件组(24例)和未发生心血管事件组(40例)。结果 :发生心血管事件组患者住院6天各标志物水平无明显变化,未发生心血管事件组患者NT-pro BNP及BNP较入院时均明显降低,差异有统计学意义(P0.05),但s ST2变化无统计学意义。通过ROC曲线分析,与入院时水平相比,治疗后6天各标志物水平可以更好地预测心血管事件,s ST2在各研究阶段预测心血管事件的能力均高于NT-pro BNP与BNP。结论 :晚期心衰患者治疗后标志物的水平较入院时具有更强的心血管事件预测能力,s ST2可以更有效评估晚期心衰患者的心血管事件风险。     

脑钠素与急性心肌梗死预后关系的临床研究

目的 探讨血浆脑钠素(BNP)浓度与急性心肌梗死(AMI)预后的关系。方法血样在心肌梗死急性期由110例AMI患获得,经在住院期间及经平均12个月的随访,观察心血管事件发生组与未发生组患的血浆BNP浓度差异。结果AMI后血浆BNP浓度呈显升高,发生心血管事件的患血浆BNP浓度明显高于未发生;急性期血浆BNP与心血管事件发生相关。结论AMI急性期血浆BNP浓度显升高,提示心血管事件发生率高;BNP可作为AMI后心血管事件的预测因子。     

急性心肌梗死患者血B-型尿钠肽水平的变化特点

目的观察急性心肌梗死(AMI)后血B-型尿钠肽(BNP)水平升高的特点,探讨AMI后BNP水平升高的意义。方法连续入选住院AMI患者230例及正常对照111例进行BNP测定。按照首次或再发AMI后ST段抬高型或非ST段抬高型AMI(STEMI或NSTEMI)、不同部位AMI、不同冠状动脉病变、不同梗死相关血管(IRA)、IRA不同TIMI血流和是否急诊经皮冠状动脉介入治疗(PCI)进行分组,采用Student-t检验和ANOVA分析对比各组间BNP水平和心功能相关指标的差异。结果AMI后2~7天,患者BNP水平显著升高(P<0.01),平均为(553.7±735.1)ng/L,是对照组的21倍;与首次AMI组对比,再发组左室射血分数(LVEF)显著降低(P<0.01),左室舒张末径(LVEDd)、BNP水平和LnBNP均显著升高(P均<0.01);与无显著狭窄病变AMI患者对比,单支、三支血管狭窄组的BNP水平显著为高(P均<0.05);IRA的TIMI血流0~1、2级组BNP水平均显著高于TIMI血流3级组(P均<0.01);与未急诊PCI组对比,急诊PCI组血肌酸激酶同工酶(CK-MB)、肌钙蛋白T(TnT)虽显著升高(P<0.05~0.01),然BNP水平显著降低(P<0.05)。结论AMI后,血BNP水平显著升高。以再发AMI、未行急诊PCI治疗和IRA血流TIMI0~2级者更高。急诊PCI可出现心肌酶升高,而BNP降低的矛盾现象。     

脑钠素动态变化与急性心肌梗死预后关系的探讨

目的探讨血浆脑钠素(brain natriuretic peptide,BNP)浓度动态变化与急性心肌梗死(acute myocardial infarc-tion,AMI)预后的关系。方法76例AMI患者分别在急性期24~48小时内和4~7天抽血检测BNP,经住院期间及出院后平均12月的随访,观察心血管事件发生组和未发生组二次血浆BNP浓度差异。结果AMI后第一次血浆BNP值(467.8±198.9)ng/L和第二次BNP值(422.6±165.5)ng/L均显著高于正常对照组(50.2±28.4)ng/L,P<0.01;发生总心血管事件患者第一次血浆BNP值(558.4±146.8)ng/L和第二次BNP值(586.7±184.6)ng/L比较,第二次血浆BNP浓度有进一步升高,但差异无统计学意义(P=0.08);而发生死亡组和心衰组第二次血浆BNP浓度均显著高于第一次[其值分别为(676.7±167.6)ng/L对(492.5±203.2)ng/L和(647.2±117.4)ng/L对(545.1±68.3)ng/l,P均<0.05];未发生心血管事件组第一次血浆BNP值(411.9±132.4)ng/L和第二次BNP值(289.6±105.4)ng/L对比第二次血浆BNP浓度显著下降,P=0.015。结论AMI急性期BNP浓度显著升高,BNP浓度持续或进一步升高提示心血管事件发生率增高;BNP浓度动态变化可作为AMI后发生心血管事件的预报因子。     

早期再灌注对急性心肌梗死患者血浆脑钠素水平的影响

目的 :探讨早期再灌注对急性心肌梗死 (AMI)患者血浆脑钠素 (BNP)水平的影响。方法 :选择AMI患者 5 6例 ,胸痛发作 12h内成功再灌注者 (38例 )为试验组 ,再灌注失败或未进行再灌注者 (18例 )为对照组。ELISA法测定入院即刻、1、2、7、14、2 8d时血浆BNP水平。结果 :AMI患者血浆BNP水平较正常人明显升高 ;试验组血浆BNP水平呈单峰曲线 ,对照组呈双峰曲线 ;再灌注可明显降低AMI患者BNP水平 ,第 7天时浓度升高不明显 ,未形成第 2个高峰。结论 :早期再灌注可明显降低血浆BNP水平。     

NT-proBNP下降率与急性心肌梗死患者预后的研究

目的探讨血浆N末端脑钠肽前体(NT-pro BNP)浓度的下降率与急性心肌梗死患者的预后的关系。方法入选2012年10月至2013年10月在内蒙古医科大学第四附属医院心内科住院的急性心肌梗死患者100例,其中男性61例,女性39例,年龄45~76岁。于发病第7 d及21 d,分别测定血浆NTpro BNP,并计算每位患者NT-pro BNP的下降率,分为A组(下降率30%)和B组(下降率30%)。记录两组患者入院到6个月内心血管不良事件发生率,于入院1周及发病6个月时测定每位患者的左室射血分数(LVEF)。结果两组在性别、年龄、吸烟史、高血压、高血脂等方面比较差异均无统计学意义(P均0.05)。发病1周时,A组与B组LVEF比较,差异无统计学意义(P0.05)。发病6月后,A组患者LVEF较B组升高[(54.75±5.18)%vs.(34.65±8.11)%],差异具有统计学意义(P0.05)。两组随访6月后,心血管不良事件发生率A组明显低于B组(11%vs.30%),差异具有统计学意义(P0.05)。结论 NT-pro BNP浓度与急性心肌梗死患者的预后有关,NT-pro BNP下降率30%的患者预后较NTpro BNP下降率30%好,总的心血管不良事件发生率低。     

影响急性心肌梗死近期预后的因素

目的：观察与分析影响急性心肌梗死（AMI）患者近期预后的因素。方法：回顾性分析2010年1月~2012年1月我院心内科因初发急性心肌梗死接受治疗的患者108例,收集血糖、血脂、肾功能、肌酸激酶（CK）、脑钠尿肽（BNP）、左室射血分数（LVEF）、入院Grace评分和冠脉造影结果进行分析。结果：事件组患者血清三酰甘油、尿素氮、尿酸平均水平均高于非事件组（P〈0.05,P〈0.01）。高三酰甘油、高空腹血糖发生率高于非事件组（P〈0.05）;事件组各时间点BNP高于非事件组（P〈0.01）,入院第2天两组BNP均明显升高（P〈001）,非事件组CK显著升高（P〈0.01）;入院1周时非事件组BNP明显回落（P〈0.05）,事件组CK值降幅明显低于非事件组（P〈0.01）。事件组LVEF〈55%患者比例及入院Grace评分高危患者比例高于非事件组（P〈0.01）,多支病变罹患率亦高于非事件组（P〈0.01）。多因素非条件logistic回归分析（α= 0.1） 结果显示Grace分级、LVEF 、入院即刻与入院1周BNP、入院第2天CK为AMI近期预后的独立预测因子。结论：BNP、CK动态变化、入院Grace评分、LVEF 是AMI近期预后的独立预测因子。     

Early recanalization and plasma brain natriuretic peptide as an indicator of left ventricular function after acute myocardial infarction

Background Although plasma brain natriuretic peptide (BNP) levels have been widely measured in patients with acute myocardial infarction (AMI), it is still uncertain whether the early recanalization modulates the levels and whether the levels can predict chronic stage left ventricular function. This study was designed to elucidate these issues. Methods In 80 consecutive patients with AMI, plasma BNP levels were measured at admission and at 4 hours, 24 hours, 48 hours, and 1 month after admission. Results In 35 of the 80 patients, the infarct-related artery was patent within 6 hours from the onset of MI (6-hour patency group), and in 27 patients, the artery was still occluded after 6 hours (6-hour occlusion group). The remaining 18 patients in whom it was unclear whether recanalization of the infarct-related artery had occurred within 6 hours or not were excluded from the analyses. In the 6-hour patency group, the BNP level gradually increased and reached a maximum value at 24 hours after admission. In the 6-hour occlusion group, the level increased more, with the values at 4 hours, 24 hours, and 48 hours significantly higher than those in the 6-hour patency group (86 ± 18 pmol/L versus 35 ± 8 pmol/L; P < .01; 112 ± 13 pmol/L versus 74 ± 9 pmol/L; P < .05; 102 ± 15 pmol/L versus 53 ± 11 pmol/L; P < .01). Chronic stage left ventricular function was correlated with not only the BNP level at same stage but also that at 24 hours and that at 48 hours after admission. Multiple regression analysis indicated that the BNP level at 24 hours was the most powerful predictor of chronic stage left ventricular function. Conclusion Plasma BNP levels can predict subsequent cardiac function. In addition, the importance of early recanalization may also be supported with BNP kinetics. (Am Heart J 2002;143:790-6.)     

急性心肌梗死患者急性期高血糖与心血管不良事件的相关性研究

目的 探讨不同类型心肌梗死患者急性期高血糖与其心血管不良事件及病情严重程度的关系。方法 将183例急性心肌梗死（AMI）患者分为ST段抬高型84例(STEMI)及非ST段抬高型99例（NSTEMI）,根据入院即刻血糖(ABG)、入院后首次（次日）空腹血糖(FBG)、是否合并有糖尿病为切点,回顾性分析各组患者住院期间急性期高血糖与主要心血管不良事件（心力衰竭、恶性心律失常、死亡）以及心梗后心功能状态的相关指标（Killip分级、LVEF、BNP）和心梗后心肌缺血、病变严重程度及范围的相关指标（冠脉病变支数、Gensini积分）的关系。结果 ABG、FBG 水平与 Killip分级、BNP、冠脉病变支数、Gensini积分等指标均呈正相关,与LVEF值均呈负相关,且相关程度STEMI均较NSTEMI更明显。结论 急性期高血糖水平在STEMI患者中对心血管不良事件发生率的预测较 NSTEMI患者更好,心梗后心功能状态、冠脉病变程度相关性更高,有助于住院期间不良心血管事件及心梗后心功能的判断,可作为STEMI患者危险分层及评估心梗后高危人群的一个简易临床指标。     

Comparison of in-hospital mortality for acute myocardial infarction in Switzerland with admission during routine duty hours versus admission during out of hours (insight into the AMIS plus registry)

To improve long-term survival, prompt revascularization of the infarct-related artery should be done in patients with acute myocardial infarction (AMI); therefore, a large proportion of these patients would be hospitalized during out of hours. The clinical effects of out-of-hours AMI management were already questioned, with conflicting results. The purpose of this investigation was to compare the in-hospital outcome of patients admitted for AMI during out of hours and working hours. All patients with AMI included in the AMIS Plus Registry from January 1, 1997, to March 30, 2006, were analyzed. The working-hours group included patients admitted from 7 a.m. to 7 p.m. on weekdays, and the out-of-hours group included patients admitted from 7 p.m. to 7 a.m. on weekdays or weekends. Major cardiac events were defined as cardiovascular death, reinfarction, and stroke. The study primary end points were in-hospital death and major adverse cardiac event (MACE) rates. A total of 12,480 patients met the inclusion criteria, with 52% admitted during normal working hours, and 48%, during out of hours. Patients admitted during weekdays included more women (28.1% vs 26%; p = 0.009), older patients (65.5 +/- 13 vs 64.1 +/- 13 years; p = 0.0011), less current smokers (40.1% vs 43.5%; p <0.001), and less patients with a history of ischemic heart disease (31.5% vs 34.5%; p = 0.001). A significantly higher proportion of patients admitted during out of hours had Killip's class III and IV. No differences in terms of in-hospital survival rates between the 2 groups (91.5% vs 91.2%; p = 0.633) or MACE-free survival rates (both 88.5%; p = 1.000) were noted. In conclusion, the outcome of patients with AMI admitted out of hours was the same compared with those with a weekday admission. Of predictors for in-hospital outcome, timing of admission had no significant influence on mortality and/or MACE incidence.     

Prognostic value of C-reactive protein levels within six hours after the onset of acute myocardial infarction

BACKGROUND: Inflammation is an important feature of atherosclerotic lesions, and the vulnerability of coronary lesions in acute myocardial infarction (AMI) at the time of onset may be related to blood levels of C-reactive protein (CRP) on admission, before CRP levels are affected by myocardial damage. METHODS: A total of 234 patients with AMI in whom plasma CRP was measured within 6 hours after onset were studied. They were divided into 2 groups: group 1 (n = 49) with elevated CRP (>/=0.3 mg/dL) on admission within 6 hours after onset and group 2 (n = 185) with normal CRP (<0.3 mg/dL) within 6 hours after onset. All were treated by primary percutaneous transluminal coronary angioplasty with provisional stenting. RESULTS: There were no significant differences in baseline characteristics between the 2 groups. In-hospital adverse coronary events, including coronary reocclusion, reinfarction, target vessel revascularization, and death, were significantly more frequent in group 1 (22.4%) than in group 2 (4.3%, P <.005), and bailout stenting was performed significantly more frequently in group 1 (61. 2%) than in group 2 (37.8%, P <.005). In contrast, there were no significant differences between the 2 groups in parameters that represent myocardial damage, including peak creatine kinase and left ventricular ejection fraction. CONCLUSION: CRP levels within 6 hours after the onset of AMI reflect the vulnerability of culprit coronary lesions and predict adverse coronary events after primary PTCA/stenting.     

Association of C-reactive protein and myocardial perfusion in patients with ST-elevation acute myocardial infarction

This study sought to evaluate the relation between C-reactive protein (CRP) on admission of patients with acute myocardial infarction (AMI) and myocardial perfusion as defined by postintervention angiographic myocardial blush grade (MBG) and their impact on subsequent mortality. The patient population comprised 191 consecutive patients with AMI undergoing PTCA within 12h of symptom onset on a native vessel. Patients were divided based on the CRP level on admission (Rolf Greiner BioChemica, Germany, cutpoint for the assay CRP: 5mg/l) into a group with elevated CRP (>or=5mg/l) and a group with normal CRP. Angiographic myocardial blush grade (MBG) after revascularization of the infarct-related artery was determined to evaluate myocardial reperfusion. Revascularization of the infarct-related artery was successful in 176 (92.6%) patients. The frequency of impaired perfusion (MBG 0-2) was higher in the elevated CRP group than in the normal CRP group (74.5% versus 59.7%, respectively, p=0.046). Elevated CRP on admission was an independent predictor of impaired myocardial perfusion (MBG 0-2, OR 1.92, 95% CI 1.02-4.01, p=0.042) in addition to age >70 years. Elevated CRP (OR 2.64, 95% CI 1.26-5.53, p=0.009) and MBG 0-2 (OR 4.58; 95% 1.73-12.20, p=0.002) were independent predictors of mortality during a 22.4+/-15.3 months follow-up in addition to heart rate on admission >100 beats/min (OR 3.07; 95% CI 1.30-7.25, p=0.009). In sequential Cox models, the predictive power of clinical data and MBG for mortality (model chi-squared 18.3) was strengthened by the inclusion of CRP levels (model chi-squared 24.3). In conclusion, there is a relation between elevated admission CRP and impaired reperfusion in the myocardium subtended to the infarct-related artery. The combination of clinical data, myocardial reperfusion levels after primary angioplasty for AMI and admission CRP increases the predictive value for subsequent survival.     

Effect of statin therapy before Q-wave myocardial infarction on myocardial perfusion

Recent studies emphasized the non-lipid-lowering effects of hydroxymethylglutaryl coenzyme A reductase inhibitors on endothelial function, inflammation, and platelet activation in patients with stable atherosclerosis. This study sought to evaluate the impact of statin pretreatment in patients with acute myocardial infarction (AMI) on level of systemic inflammation and myocardial perfusion. A total of 253 consecutive patients undergoing primary angioplasty on a native vessel within 12 hours of AMI were divided into a group with statin pretreatment (n = 86) and control patients (n = 167). Angiographic myocardial blush grade (MBG) after revascularization of the infarct-related artery was determined to evaluate myocardial perfusion. Statin pretreatment was associated with a lower frequency of increased C-reactive protein (>or=5 mg/L) on admission compared with the control group (48% vs 64%; p = 0.019). The frequency of normal perfusion (MBG 3) was higher in the statin-pretreatment group than the control group (45% vs 26%, respectively; p <0.001). Statin pretreatment was an independent predictor of normal myocardial perfusion (MBG 3; odds ratio 2.53, 95% confidence interval 1.15 to 9.53, p = 0.022) in addition to age 相似文献   

心型脂肪酸结合蛋白对急性心肌梗死患者主要不良心脏事件的预测价值

目的观察血浆心型脂肪酸结合蛋白（heart-type fatty acid-binding protein,H-FABP）的峰值浓度对急性心肌梗死（AMI）患者主要不良心脏事件（MACE）的预测价值。方法入选2010年1月至2011年6月入院距发病时间2h以内的AMI患者60例,于入院即刻至发病10h期间,每2h测定1次血浆H-FABP的浓度。根据H-FABP峰值水平的平均值将患者划分为H-FABP高值组和低值组,比较两组患者发病后1个月、1年的主要不良心脏事件（严重心力衰竭、恶性心律失常、再发心肌梗死、心源性死亡、靶病变血管重建）的发生率。结果与H-FABP低值组相比,H-FABP高值组发病后1个月、1年,MACE及严重心力衰竭的发生率更高,差异有统计学意义（P〈0.05）;其他MACE两组间无统计学差异。结论 H-FABP酶峰水平的升高对AMI患者严重心力衰竭的发生有一定预测价值。