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1.
背景:尽管血管近距离放射治疗是唯一批准用于治疗裸金属支架植入后再狭窄的方法,但是药物洗脱支架目前亦用于再狭窄的治疗。比较上述两种治疗方法各自优势的资料还很有限。 目的:与血管近距离放射治疗裸金属支架内再狭窄比较,评价西罗莫司(雷帕霉素)洗脱支架的安全性及有效性。 设计、地点及研究对象:于384例支架内再狭窄患者中进行前瞻性、多中心、随机试验。患者于2003年2月2004年7月入选自26家学院及社区医疗中心。本文资料均随访至2005年6月30日。 干预:血管近距离放射治疗(n=125)或植入西罗莫司洗脱支架(n=259)。 主要观测指标:术后9个月靶血管治疗失败(心源性死亡、心肌梗死或靶血管血运重建)。 结果:两组患者的基线特征匹配良好。血管近距离放射治疗组与西罗莫司洗脱支架组患者病变长度相似(均值[SD]分别为16.76[8.55]laln和17.22[7.97]mln;P=0.61)。血管近距离放射治疗组手术成功率为99.2%(124/125),西罗莫司(雷帕霉素)洗脱支架组为97.3%(250/257)(P=0.28)。血管近距离放射治疗组靶血管治疗失败率为21.6%(27/125),西罗莫司洗脱支架组为12.4%(32/259)(相对危险度[relativerisk,RR],1.7;95%可信区间[confidence interval,CI],1.1~2.8;P=0.02)。血管近距离放射治疗组靶病变需要血运重建发生率为19.2%(24/125),西罗莫司洗脱支架组为8.5%(22/259)(RR,2.3;95%CI,1.3~3.9;P=0.004)。在血管造影随访中,血管近距离放射治疗组分析节段血管造影再狭窄率为29.5%(31/105),西罗莫司洗脱支架组为19.8%(45/227)(RR,1.5;95%CI,1.0—2.2;P=007)。6个月随访时,西罗莫司洗脱支架组最小管腔直径大于血管近距离放射治疗组(均值[SD],1.52[0.63]mm比1.80[0.63]mm;P〈0.001),表明前者分析节段血管管腔净获益更大,其主要原因是植入支架以及无边缘再狭窄(0.68[0.60]mm比1.0[0.61]mm;P〈0.001)。结论:与血管近距离放射治疗裸金属支架内再狭窄比较,西罗莫司洗脱支架具有更好的临床及血管造影效果。  相似文献   

2.
背景:与裸金属支架比较,西罗莫司洗脱支架和紫杉醇洗脱支架可明显改善经皮冠状动脉血运重建术后血管造影结果和临床预后,但是对于再次出现的冠状动脉病变而言,目前还没有前瞻性、多中心研究。 目的:比较西罗莫司洗脱支架和紫杉醇洗脱支架的安全性和疗效。 设计:于2003年8月至2004年2月进行前瞻性、随机、对照试验(REALITY试验),在随访8个月时进行血管造影,12个月时进行临床随访。  相似文献   

3.
血小板──血管紧张素Ⅱ──血管内皮宋丽萍,葛明康,周陆(附属医院核医学科)血管内皮尤其是肺血管内皮能够合成血管紧张素Ⅱ(AⅡ),也可以激活和降解许多存在于血液中的血管活性物质[1]。因此,内皮不仅是个被动扩散的屏障,而且可以改变到达血管壁深层的血管活...  相似文献   

4.
目的:观察全部置入药物洗脱支架(DES)对冠状动脉介入治疗(PCI)多支架术患者临床结果的影响。方法:选取2004年5月1日至2009年4月30日接受冠状动脉多支架术治疗的患者共913例。根据置入支架的种类不同分为3组,分别记录三组病人的临床基本情况、冠状动脉病变的基础特征、支架置入的部位和种类、病人住院期间治疗情况及主要的心脑血管事件发生情况和出院后中位数的随访情况等,对比观察全部置入DES对PCI多支架术患者临床结果的影响。结果:全部置入DES组中既往有血管重建史的患者明显增多。单支病变全部应用DES多,占31.9%,三支病变应用DES和混合组为多,占42.3%,3组在2支病变中支架应用无差异;在左主干病变、前降支近端病变、开口病变、弥漫性病变及支架内再狭窄病变中BMS组比例最少。住院期间心脑血管不良事件(MACCE)发生率三组患者均较低。结论:全部置入DES在PCI多支架术中的应用是安全、有效的。  相似文献   

5.
目的评估接受药物洗脱支架(DES)治疗患者,持续双联抗血小板超过1年的潜在效益及风险。方法选择玉林市第二人民医院2005~2011年380例接受DES治疗的患者,随机分为两组,一组接受氯吡格雷+阿司匹林治疗,另一组单服阿司匹林;两组中患者至少12个月内未出现心或脑的主要不良反应事件以及严重出血;主要终点效应是心肌梗死或心源性死亡。结果双联抗血小板治疗持续2年的主要事件累积风险为1.8%,而单独使用阿司匹林组为1.2%(HR=1.65,95%CI为0.8~3.36,P=0.17)。两组在以下几方面的风险没有显著差异:心肌梗死、卒中、支架栓塞、再次血运重建、严重出血、全因死亡。结论在减少心肌梗死或心源性死亡发生率方面,接受药物支架置入患者持续双联抗血小板治疗12个月并不比单独使用阿司匹林者更有效。  相似文献   

6.
严红  钟明江 《循证医学》2009,9(6):349-353
1 文献来源 Stone GW, Lansky A J, Pocock S J, et al. Paclitaxel-eluting stents versus bare-metal stents in acute myocardial infarction [J]. N Engl J Med, 2009,360(19) : 1946-1959.  相似文献   

7.
目的探讨药物洗脱性支架(DES)和裸金属支架(BMS)治疗冠状动脉狭窄的远期疗效。方法对成功进行DES植入术患者2734例和BMS植入患者216例术后6个月、1年进行随访,观察其支架内再狭窄(ISR)发生率、急性心肌梗死发生率、冠状动脉旁路移植(CABG)或再次经皮冠状动脉介入治疗(PCI)治疗率、病死率,分析术后再狭窄的独立危险因素。结果术后6个月、1年时DES组ISR发生率均低于BMS组(9.58%vs 18.98%,18.32%vs 31.94%),差异有统计学意义(P<0.05);随访6个月时,急性心肌梗死发生率、CABG或再次PCI治疗率和病死率方面比较差异无统计学意义(P>0.05),但是随访1年后,其差异有统计学意义(P<0.05);多因素分析发现,支架直径≤3 mm、吸烟和年龄是支架植入术后发生再狭窄的独立危险因素。结论在冠状动脉狭窄的治疗中,DES的远期疗效优于BMS,但临床应用还需要进一步的循证医学研究证据。  相似文献   

8.
目的本研究通过比较糖尿病患者置入金属裸支架(bare metal stents,BMS)vs药物洗脱支架(drug eluting stents,DES)后发生死亡、心肌梗死(myocardial infarction,MI)、再次血运重建和支架血栓的情况,以评价糖尿病患者置入DES后的远期安全性和有效性。方法本研究于2003年7月~2005年12月连续入选了834例因冠心病合并糖尿病在首都医科大学附属北京安贞医院心内科行经皮冠状动脉介入治疗(percutaneous coronary intervention,PCI)的患者,按置入支架类型将患者分为DES组(n=583)和BMS组(n=251)。主要终点事件为24个月时全因病死率;次要终点事件为24个月时非致死性MI、再次血运重建以及主要不良心血管事件(major adverse cardiac events,MACE)的发生率。结果本研究结果经多因素回归分析显示,DES组明显降低了24个月时死亡[3.2%vs 5.1%,危险比(hazard ratio,HR)0.34,95%可信区间(confidential interval,CI)0.12~0.94,P=0.038]和心性死亡的风险(2.2%vs 4.4%,HR=0.29,95%CI:0.13~0.87,P=0.027),非致死性MI和心性死亡与非致死性MI复合终点发生风险比较差异无统计学意义;明确和可能的支架血栓的发生风险比较差异也没有统计学意义(1.9%vs 2.0%,HR=0.96,95%CI:0.51~2.17,P=0.351)。DES明显降低了再次血运重建的风险(10.5%vs 20.7%,HR=0.24,95%CI:0.11~0.78,P<0.001)和靶血管再次血运重建的风险(8.9%vs 17.1%,HR=0.33,95%CI:0.16~0.87,P<0.001);与BMS组比较DES组的MACE的风险也明显降低,差异有统计学意义(15.8%vs 27.9%,HR=0.19,95%CI:0.09~0.85,P<0.001);其主要与DES组患者的死亡和靶血管再次血运重建的风险降低有关。结论与BMS相比,DES可显著降低糖尿病患者的24个月时死亡、再次血运重建和MACE的风险,而未增加非致死性MI和支架血栓的风险。置入DES后死亡风险的降低原因,主要与DES降低再狭窄后的死亡和MI风险,获得更高的完全血运重建率以及未增加支架血栓的风险相关。  相似文献   

9.
冠状动脉支架后血栓形成的原因及防治进展   总被引:1,自引:0,他引:1  
陈国柱  史忠 《西部医学》2008,20(6):1296-1298
支架血栓形成(Stent Thrombosis,ST)是冠心病介入治疗的严重并发症,可对人体造成灾难性的后果。与普通金属支架(BMS)比较,药物洗脱支架(DES)可明显减少再狭窄率和靶病变的血运重建率。植入支架后可发生早期、晚期、极晚期支架血栓形成,其发生机制并不完全相同。抗血小板、抗凝、调脂治疗可能降低ST的发生率。个体化手术及个体化药物治疗,在解决冠脉血运重建的同时,可减少再狭窄率和降低ST的发生率。ST高危病人在植入支架后应该规律随访,加强对患者的健康教育。  相似文献   

10.
11.
Background Drug-eluting stents (DES) are the most common device used in percutaneous treatment of coronary artery disease. Recently, there has been an increased concern regarding their safety profile, in particular the late and very late stent thrombosis rate compared to bare metal stents (BMS). The aim of the study was to compare the reported incidence of late and very late stent thrombosis of DES and BMS in patients from published clinical studies with an extended follow-up period to four years.Methods A search strategy was developed to identify publications reporting on late or very late thrombosis of BMS and DES available through MEDLINE and Cochrane Library databases. Two independent reviewers appraised eligible studies and extracted data. Odds ratios (OR) were calculated for each outcome and presented with 95% confidence intervals (CI).Results Fourteen randomized controlled trials, which were at least single blinded, were identified. There was no difference in the incidence of late and very late stent thrombosis in patients treated with DES compared with patients treated with BMS (late OR 0.55, 95%Cl 0.23-1.31 and late/very late OR=1.08, 95%CI 0.61-1.91).Conclusions The safety profile of DES was similar to BMS in terms of stent thrombosis. We found no evidence of increased risk of late and very late thrombosis for DES.  相似文献   

12.
Background Early local platelet activation after coronary intervention identifies patients at increased risk of acute stent thrombosis (AST). However, early changes in platelet activation in coronary circulation following drug-eluting stent (DES) implantation have never been reported. Methods In a prospective study of 26 consecutive elective stable angina patients, platelet activation was analyzed by measuring soluble glycoprotein V (sGPV) and P-selectin (CD62P) before and after implantation of either DES or bare metal stent (BMS). All patients were pretreated with clopidogrel (300 mg loading dose) and aspirin (75 mg orally) the day before the procedure. Blood samples were drawn from the coronary ostium and 10 - 20 mm distal to the lesion site. Results Consistent with the lower baseline clinical risk, the levels of CD62P and sGPV were within normal reference range, both in the coronary ostium and distal to the lesion before percutaneous coronary intervention (PCI) procedure. The levels of CD62P and sGPV did not change significantly (CD62P: (31.1 ± 9.86) ng/ml vs (29.5 ± 9.02) ng/ml, P=0.319 and sGPV: (52.4 ± 13.5) ng/ml vs (51.8 ± 11.7) ng/ml, P=0.674, respectively) after stent implantation when compared with baseline. Changes in these platelet activation markers did not differ between stent types. Conclusions Intracoronary local platelet activation does not occur in stable angina patients before and immediately followina DES implantation when dual anti-Dlatelet is administered.  相似文献   

13.
目的探讨对药物洗脱支架(DES)置入后发生再狭窄(ISR)患者再次实施DES置入术的远期疗效和安全性。方法选择植入DES的冠心病患者,经冠状动脉造影检查证实发生再狭窄(ISR≥50%),并且再次置入DES治疗ISR介入手术成功的患者。985例DES-ISR患者根据狭窄类型分为局限性狭窄组130例(13.2%),弥漫性狭窄组699例(71.0%),闭塞性狭窄组156例(15.8%)。随访观察3组患者的远期(6个月、12个月)疗效及安全性。结果经过6个月的随访,局限性狭窄组患者主要不良心血管事件(MACE)的发生率为3.85%(5/130);弥漫性狭窄组患者MACE的发生率为2.72%(19/699);闭塞狭窄组患者MACE的发生率为3.21%(5/156),3组6个月的随访结果差异无统计学意义(P>0.05)。经过12个月的随访,局限性狭窄组患者MACE的发生率为13.08%(17/130);弥漫性狭窄组患者MACE的发生率为9.16%(64/699);闭塞狭窄组患者MACE的发生率为9.62%(15/156),3组12个月的随访结果差异亦无统计学意义(P>0.05)。结论目前对于DES-ISR患者来说,不论ISR的类型,再次置入DES都是一种有效的方法。  相似文献   

14.
冠状动脉小支架置入术对血小板功能及临床疗效的影响   总被引:1,自引:0,他引:1  
目的 通过术中采集冠状静脉窦血的方法 ,探讨冠状动脉内小支架置入术对冠脉循环中血小板功能的影响及临床应用的可行性 .方法  39例冠心病患者经冠状动脉造影证实至少有一支血管狭窄大于等于 5 0 % (直径法 ) ,术前进行充分抗血小板治疗后 ,按置入的支架大小分成直径在 2 .5~2 .75 mm之间的小冠脉支架组 (15例 )和支架直径在 3.0~ 4.5 mm之间的对照组 (2 4例 ) ,分别于术前、术中及术后 1min和 10 m in采集冠状静脉窦血 ,放免法测定血浆血小板 α-颗粒膜蛋白 (GMP- 140 )及血栓素 B2 (TXB2 )的浓度 .术后随访 6mo,比较两组的临床疗效 .结果 两组在球囊预扩张后即刻各血小板功能指标均轻度增高 ;支架置入后即刻小支架组GMP- 140由术前的 (7.5 5± 0 .36 ) μg· L- 1升至 (9.83± 0 .78)μg· L- 1 (P<0 .0 5 ) ,对照组由 (7.5 1± 0 .34 )μg· L- 1 升至(9.6 0± 0 .38)μg· L- 1 (P<0 .0 5 ) ;小支架组 TXB2 由术前的(2 47± 2 7) ng· L- 1 升至 (399± 2 3) ng· L- 1 (P<0 .0 1) ,对照组 TXB2 由 (2 33± 17) ng· L- 1升至 (385± 19) ng· L- 1 (P<0 .0 1) ;支架后 10 min两组 GMP- 140降至术前水平 ,TXB2 有下降趋势 .两组组间比较各个时间点血小板活性变化趋势一致 ,均无差异 .两组围手  相似文献   

15.
Background In response to the increasing concern with the safety of the drug-eluting stent (DES), the present study aimed to evaluate the long-term safety and efficacy of DES used for a Chinese patient population. Methods All patients, who underwent an index elective percutaneous coronary intervention with an implantation of either DES or bare-metal stent (BMS) in a single institution from April 2004 to December 2006, were included in the analysis. A propensity-score matching technique was applied to adjust and to minimize the impact of confounding factors. Results Overall, there were 1465 patients (20.2%) who had undergone an implantation of only BMS, and 5769 patients (79.8%) of only DES. The propensity-score matching technique set up 1321 pairs of patients for analysis. There were no significant differences between the rates of stent thrombosis (definite and probable) of the two groups (1.06% vs 1.21%, P=0.8580). Although rates of mortality and myocardial infarction (MI) during the 2-year follow-up period had not differed significantly, rates of death/MI (3.0% vs 4.5%, P=0.0263), target-lesion revascularization (TLR, 3.2% vs 8.5, P=0.0001), target-vessel revascularization (TVR, 5.8% vs 9.5%, P 〈0.0001) and any revascularization (10.0% vs 13.3%, P=0.0066) were significantly lower for the DES group than for the BMS group. Among the patients in whom devices were implanted for off-label indications, the propensity-score matched rates of stent thrombosis, mortality, MI, and death/MI were not significantly different, while rates of TLR, TVR and any revascularization were significantly lower for the DES group than for the BMS group. Conclusions During the 2 years of follow-up post stenting, DES use is associated with lower rates of death/MI, TLR, TVR and any revascularization, compared with BMS, in propensity-score matched Chinese patient populations. In the setting of off-label usage, DES use is also associated with similar advantages.  相似文献   

16.
目的探讨使用全覆膜支架行经颈静脉肝内门腔分流术(TIPS术)中支架分流道的两端长度与长期分流道通畅率、肝性脑 病(HE)、生存率之间的关系。方法回顾性分析2008年1月~2011年12月在我科行TIPS术患者53例,均采用直径8mm全覆膜 支架(Fluency支架,Bard)建立分流道,再视造影情况加以同等直径裸支架延长肝静脉端、门脉端。测量覆膜支架进入肝静脉长 度、门静脉长度(X1、X2),肝静脉、门静脉支架总长度(X3、X4),行COX回归分析其对TIPS术后道通畅率、生存率及肝性脑病发 生率的影响。结果全部患者均成功建立分流道,术前门脉压力(29.80±4.83)mmHg,术后门脉压力(19.00±3.92)mmHg,下降 (10.80±5.15)mmHg(t=13.44,P<0.01)。随访时间3~89 月,中位随访期64 月,平均39 个月。期间肝性脑病发生率为23%(12/ 53)。16例出现分流道再狭窄,5年累积一期通畅率分别为83%、75%、63%、62%、54%。5年累积生存率分别为79%、72%、72%、 69%、69%。通畅率COX回归分析显示X1有统计学意义(OR=0.42,P<0.01);生存率COX回归分析显示X4有统计学意义(OR= 1.50,P=0.021);肝性脑病影响因素分析均无统计学意义。结论使用Fluency覆膜支架行TIPS术,适当增加肝静脉端覆膜支架 长度、减少支架进入门静脉长度可提高分流道通畅率及生存率。  相似文献   

17.
冠状动脉钙化病变对药物洗脱支架植入后内膜增生的作用   总被引:1,自引:0,他引:1  
Zhang RY  Shen WF  Zhang JS  Yang ZK  Zhang Q  Hu J 《中华医学杂志》2006,86(16):1118-1121
目的利用血管内超声观察冠状动脉钙化病变对药物洗脱支架植入后内膜增生的作用。方法对97例(99处病变)冠心病患者在药物洗脱支架植入后8个月利用血管内超声(IVUS)测定支架近端、支架远端和支架内管腔最小处血管段外弹力膜(EEM)横截面积(CSA),支架内CSA,管腔CSA,新生内膜面积,支架最大直径及最小直径,并推算支架对称指数。根据IVUS检测血管钙化的情况将支架植入段血管分为钙化病变组和非钙化病变组,观察钙化病变对支架植入后内膜增生的作用。结果99处病变中有14例支架内内膜增生。与非钙化组患者比较,钙化病变组支架植入后支架两端支架内CSA相似:支架近端为(7·30±1·94)mm2和(6·58±1·96)mm2;支架远端为(6·74±2·02)mm2和(6·14±1·82)mm2。但支架内最小CSA明显减小[(6·10±1·87)mm2和(4·97±1·51)mm2,P<0·05]且对称性较差(对称指数0·92±0·07和0·87±0·09,P<0·05),但内膜面积反而显著减少(0·53±1·50)mm2与(0·02±0·20)mm2。结论冠状动脉药物洗脱支架治疗钙化病变支架扩张程度和对称性均较差,但是与非钙化病变患者比较,内膜增生反而减少。  相似文献   

18.
PTCA及血管内支架术中冠脉循环血小板功能的变化   总被引:11,自引:4,他引:7  
目的 探讨经皮腔内冠脉成形术(PTCA)及冠脉内支架术对冠脉循环中血小板功能的影响。方法 29例冠心病患者分成冠脉造影组(8例)和PTCA加支架组(21例),分别于术前及术后即刻采集冠状静脉窦血,采用比浊法测定血小板最大聚集率(MPAR),放免法测定血小板α-颗粒膜蛋白(GMP-140)及血栓素B2(TXB2)的浓度。并对PTCA及支架术中不同时间点血小板功能指标的变化情况进行了观察。结果 冠脉造影前后血小板功能指标无显著变化;PTCA及支架组在球囊预扩张即刻各血小板功能指标均轻度增高;支架后即刻显著升高(P<0.05),支架后10min有下降趋势。结论 冠脉造影对冠脉循环血小板功能无显著影响;PTCA及支架术中能使血小板功能激活。  相似文献   

19.
Background  Early clinical trials with the Endeavor zotarolimus eluting stent (ZES) in western populations demonstrated low rates of target lesion revascularization with a favorable safety profile including low late stent thrombosis with up to 5 years of follow-up. The aim of this clinical registry study was to evaluate real world clinical performance of the ZES coronary system in Chinese patients.
Methods  The China Endeavor Registry is a prospective, multicenter registry assessing the safety of the ZES system in a real world patient population. It was conducted at 46 centers in China in routine treatment of patients with coronary artery stenosis, including patients with clinical characteristics or lesion types that are often excluded from randomized controlled trials. The registry included 2210 adult patients who underwent single-vessel or multi-vessel percutaneous coronary intervention. The primary end point was the rate of major adverse cardiac events (MACE) at 12 months.
Results  The 12-month rate of MACE for all patients in the registry was 3.03%. Cardiac death or myocardial infarction rate was 1.28% and target lesion revascularization rate was 1.66%, non-target lesion target vessel revascularization (TVR) was 0.52%, TVR was 2.18%, and target vessel failure was 3.22%. There was only one case of emergent cardiac bypass surgery. The 12-month overall incidence of all Academic Research Consortium (ARC)-defined stent thrombosis was 0.43%.
Conclusion  Mid-term results from the real-world China Endeavor Registry suggest that Endeavor ZES was safe and effective in Chinese patients.
  相似文献   

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