西洛他唑联合氯吡格雷对冠状动脉药物涂层支架术后支架内再狭窄的影响

目的 探讨西洛他唑联合氯吡格雷抗血小板治疗对行冠状动脉(冠脉)药物涂层支架术患者支架内再狭窄(in-stent restenosis, ISR)的影响。方法 回顾性分析231例行冠脉药物涂层支架术且术后1年复查冠脉造影的冠心病患者的临床资料。根据不同的抗血小板治疗方案分为两组,其中214例术后1年内服用阿司匹林联合氯吡格雷(阿司匹林组),17例术后服用西洛他唑联合氯吡格雷(西洛他唑组),比较两组术后1年ISR的发生率及再次血运重建率。结果 两组患者的基线资料分析结果显示,西洛他唑组男性患者比例(88.2% vs 76.6%, P<0.001)及有消化道出血病史比例(35.3% vs 0.9%, P<0.001)明显高于阿司匹林组,其他临床资料差异无统计学意义(P>0.05)。支架术后1年,冠脉造影结果显示: 西洛他唑组与阿司匹林组ISR的发生率差异无统计学意义(29.4% vs 12.1%, P=0.06);西洛他唑组靶血管再次血运重建术与阿司匹林组无统计学差异(5.9% vs 6.1%, P=0.974);两组其他冠脉病变进展需行冠脉介入治疗(percutaneous coronary intervention, PCI)的患者比例亦无明显差异(17.6% vs 15.4%, P=0.734)。结论 对于行冠脉药物涂层支架术的患者,使用西洛他唑联合氯吡格雷抗血小板治疗与传统双联抗血小板治疗,预防ISR效果相当。对于消化道出血高风险或阿司匹林不耐受的人群,可考虑使用西洛他唑替代阿司匹林进行双联抗血小板治疗。     

西洛他唑对冠状动脉小血管病变支架术后患者的长期疗效

目的:探讨西洛他唑对冠状动脉小血管病变普通金属支架置入术后再狭窄的防治作用及长期临床疗效的影响.方法:193例接受冠状动脉支架术的患者随机分两组,二联组(阿斯匹林 氯吡格雷)98例,三联组(阿斯匹林 氯吡格雷 西洛他唑)95例.两组均服用阿斯匹林300 mg/d,1 mo后改为100 mg/d长期,以及氯吡格雷75 mg/d,3 mo;三联组术后加用西洛他唑200 mg/d,6 mo.患者于术后6 mo行冠脉造影随访和1a临床随访.结果:二联组和三联组术后6 mo造影再狭窄率分别为33%(17/52)和23%(12/53)(P>0.05).二组术后1a内因心、脑血管事件再住院率分别为26%和16% (P>0.05).两组均无严重出血等副作用,轻微出血亦无明显差异(2% vs 5%,P>0.05).结论:两组造影再狭窄率及1a内因心、脑血管事件再住院率无明显差异,出血等副作用无明显差异.支架术后常规抗血小板治疗基础上合用西洛他唑有降低再狭窄率的趋势.     

冠状动脉介入治疗术后三联抗血小板治疗的近期疗效

目的评价冠状动脉介入治疗（PCI）后应用西洛他唑联合阿司匹林和氯吡格雷三联抗血小板治疗方案的近期疗效和安全性.方法回顾性分析2001年10月至2005年4月沈阳军区总医院心内科接受PCI治疗的病例,共1103例患者于PCI后应用三联抗血小板治疗,对照组为同期PCI后服用阿司匹林联合氯吡格雷两联抗血小板治疗者2032例.比较两组患者PCI后30 d主要不良心脏事件（MACE）、亚急性血栓（SAT）和出血发生率.结果三联组接受支架治疗为91.3 % （1007/1103）,多支病变占 68.3 % （753/1103）,无保护左主干病变占 7.1 % （78/1103）.对照组接受支架治疗为89.1 % （1910/2032）,多支病变占 63.3 % （1286/2303,P〈0.01）,无保护左主干病变4.6 % （94/2032）,三联组均高于对照组 （P〈0.01）,慢性完全闭塞病变接受PCI的比例低于对照组[10.8% （119/1103） 比13.4 % （272/2032）,P〈0.05].两组术中均无死亡;三联组30 d病死率0.4 % （4/1103）, MACE发生率1.3 % （14/1103）均显著低于对照组1.6 % （32/1032）,2.6%（53/2032,P〈0.05）.两组SAT [0.7 % （8/1103） 比1.0 % （21/2032）]和30 d主要出血事件发生率[0.3 % （3/1103） 比0.2 % （4/2032）]差异均无统计学意义.结论 PCI后应用氯吡格雷、阿司匹林和西洛他唑三联抗血小板治疗是安全的,与常规氯吡格雷和阿司匹林两联抗血小板治疗相比可显著降低近期死亡和MACE发生率,但还需随机临床试验证实.     

经皮冠状动脉介入治疗术后不同抗血小板治疗方案疗效对比

目的对经皮冠状动脉介入治疗（PCI）术后不同抗血小板治疗方案疗效对比。方法将132例冠状动脉介入术后患者随机分入阿司匹林联合氯吡格雷双联组、阿司匹林氯吡格雷与西洛他唑三联组,双联组长期服用阿司匹林100 mg/d、氯吡格雷75 mg/d（12个月）,三联组患者在双联用药基础上再加用西洛他唑100 mg/d（6个月）,随访对比主要心脑血管事件发生率、血小板聚集率、药物不良反应发生情况。结果与双联组对比,三联组主要心脑血管事件（MACCE）发生明显降低,二磷酸腺苷（ADP）诱导的血小板聚集率与双联组差异有统计学意义（P〈0.05）,术后6个月三联组最小腔内径（MLD）和晚期管腔丢失与双联组比较差异有统计学意义（P〈0.05）,再狭窄率差异有高度统计学意义（P〈0.01）。结论冠心病患者行PCI术后在阿司匹林联合氯吡格雷基础上加用西洛他唑,可进一步防止支架内血栓形成,晚期管腔丢失减少,再狭窄率降低。     

Predictive value of antiplatelet resistance on early stent thrombosis in patients with acute coronary syndrome

Background  Despite outstanding antiplatelet properties of aspirin and clopidogrel, some patients taking these drugs continue to suffer complications. Antiplatelet resistance appears to be a new prognostic factor in acute coronary syndrome patients for clinical events associated with stent thrombosis (ST). However, there is no optimal method to identify it and assess its correlation to clinical outcomes. This study sought to evaluate the predictive value of antiplatelet resistance assessed by whole blood impedance aggregometry for the risk of early ST in patients with acute coronary syndrome who underwent coronary stenting.

Methods  Platelet responses to aspirin and clopidogrel in 86 patients with acute coronary syndrome were measured by whole blood impedance aggregometry. Spontaneous platelet aggregation was defined as antiplatelet resistance identified by the increased electrical impedance. The clinical endpoint was early stent thrombosis during 30-day follow-up after coronary stenting.

Results  The prevalence of aspirin resistance, clopidogrel resistance and dual resistance of combined clopidogrel and aspirin resistance were 19.8%, 12.8% and 5.8% respectively. Diabetes, female and higher platelet counts were more frequently detected in clopidogrel-resistant and dual-resistant patients. During 30-day follow-up, the patients with clopidogrel resistance and dual resistance had higher incidence of early stent thrombosis (18.2% vs. 1.3%, 40.0% vs. 1.2%, P <0.05). Binary Logistic Regression analysis indicated that dual resistance remained an independent predicator for early stent thrombosis (odds ratio 34.064, 95% CI 1.919–604.656, P=0.016).

Conclusions  Antiplatelet resistance assessed by whole blood impedance aggregometry is paralleled to clinical events, and dual antiplatelet resistance is an independent predicator for early stent thrombosis in patients with acute coronary syndrome. As a physiological assessment of platelet reactivity, whole blood impedance aggregometry is a convenient and accurate option for measuring antiplatelet resistance and hence predicting early stent thrombosis.

     

Earlier application of loading doses of aspirin and clopidogrel decreases rate of recurrent cardiovascular ischemic events for patients undergoing percutaneous coronary intervention

Background  Aspirin and clopidogrel resistance plays a significant role in the development of cardiovascular ischemic events for ninety patients undergoing percutaneous coronary intervention. Recent studies have indicated that increasing the dose of antiplatelet drugs maybe a potent method to improve the inhibition of platelet aggregation.

Methods  Thrombelastograph (TEG) determinations were used to evaluate the effect of antiplatelet therapy. According to the results, 90 patients were divided into three groups and given different doses of aspirin and clopidogrel. Thirty patients with both an inhibition rate of aspirin >50% and an inhibition rate of clopidogrel >50% were defined as the control group. Sixty patients with an inhibition rate for aspirin <50% and an inhibition rate for clopidogrel <50% were defined as the resistance group. Patients in resistance group were randomly assigned to be given a routine dose (100 mg aspirin plus 75 mg clopidogrel per day, which we called a resistance plus routine dose group, R+R) and a loading dose (200 mg aspirin and 150 mg clopidogrel per day, which we called resistance plus loading dose group, R+L) of antiplatelet therapy. A 12-month follow-up was observed to examine the change of inhibition rate of antiplatelet therapy and to estimate the relationship between inhibition rate and the occurrence of cardiovascular ischemic events.

Results  After 6 months of antiplatelet therapy, the inhibition rate of aspirin in the R+L group increased from (31.4±3.7)% to (68.6±7.1)%, which was significantly higher than that in R+R group, (51.9±8.2)% (P <0.01). The inhibition rate of clopidogrel in the R+L group increased from (22.1±3.8)% to (60.2±7.4)%, which was significantly higher than in the R+R group, (45.9±4.3)% (P <0.01). The occurrence rates of cardiovascular ischemic events, stent thrombosis, recurrent unstable angina and myocardial infarction in the R+R group were 20%, 36% and 17%, respectively. Occurrence was significantly increased compared with that in the control group, 3%, 10% and 1%, respectively (P <0.01). In contrast, the occurrence rates in the R+L group (10%, 23% and 6%, respectively) were attenuated compared with those in the R+R group (P <0.01), although still higher than in the control group (P <0.01).

Conclusions  Almost all of the cardiovascular ischemic events occurred in the first six months after percutaneous coronary intervention. According to the result of TEG determinations, earlier application of a loading dose of aspirin and clopidogrel can decrease the rate of recurrent cardiovascular ischemic events.

     

冠心病心绞痛患者经皮冠状动脉介入围手术期对阿司匹林和氯吡格雷抗血小板效应分析

摘要目的：观察因冠心病心绞痛行经皮冠状动脉介入治疗（PCI）的患者,分析比较不稳定型心绞痛（ua）与稳定型心绞痛（SA）患者PCI围手术期对阿司匹林和氯吡格雷的抗血小板效应。方法：人选2013年3月～6月在北京市石景山医院行PCI术的患者103例,根据病情分为UA组及SA组。其中UA58例,SA45例。2组患者在糖尿病、PCI支架置人个数方面无显著差异。PCI术前24h口服300mg氯吡格雷、300mg阿司匹林,PCI术后继续服用氯吡格雷75mg／d,阿司匹林100mg／d,术后24h测定血栓弹力图,分析阿司匹林、氯吡格雷的血小板抑制率。结果：UA组的血小板抑制率：氯吡格雷（66．41±17．24）％,阿司匹林（79．36±14．61）％;SA组血小板抑制率：氯吡格雷（74．65±16．24）％,阿司匹林（84．71±11．44）％。UA组的阿司匹林及氯吡格雷的血小板抑制率均低于SA组（P〈0．05）。结论：PCI术围手术期,UA患者对阿司匹林及氯吡格雷的抗血小板效应低于SA患者。     

Efficacy and safety of triple-antiplatelet therapy after percutaneous coronary intervention: a meta-analysis

Background The combination of cilostazol,aspirin and clopidogrel (triple antiplatelet therapy,TAT) after a percutaneous coronary intervention has been used as an alternative therapy.We performed a meta...     

细胞色素P4502C19基因检测对稳定性心绞痛患者左主干介入术后抗血小板治疗的指导价值

目的 对复杂冠状动脉左主干病变且细胞色素P4502C19（CYP2C19）基因为中间代谢的稳定性心绞痛患者,评价其经皮冠状动脉介入治疗（PCI）术后给予不同抗血小板治疗方案的有效性及安全性。方法 回顾性分析2015年2月~2017年2月福建医科大学附属协和医院心内科收治的行择期左主干PCI术且CYP2C19基因型检测为中间代谢型的稳定性心绞痛患者247例,根据服用药物分为氯吡格雷组152例（阿司匹林+氯吡格雷组）,替格瑞洛组95例（阿司匹林+替格瑞洛）。2组术前均给予阿司匹林+氯吡格雷各300 mg口服;替格瑞洛组术后给予替格瑞洛维持剂量90 mg口服,2次/d;氯吡格雷组术后给予氯吡格雷维持剂量75 mg口服,1次/d;2组术后阿司匹林维持剂量100 mg口服,1次/d。观察术后12个月内主要不良心血管事件（MACE）发生情况。结果 术后12个月时,替格瑞洛组MACE发生率明显低于氯吡格雷组,差异有统计学意义（2.1% vs 15.1%,P=0.001）;2组非血运重建性靶血管再狭窄、再发非心肌梗死性心绞痛、再发心肌梗死、靶血管再次血运重建比较,差异无统计学意义（P>0.05）。两组出血发生率无明显差异（P>0.05）。结论 对于复杂冠状动脉左主干病变且CYP2C19基因为中间代谢的稳定性心绞 痛患者,PCI术后使用阿司匹林联合替格瑞洛抗血小板治疗获益明显,较阿司匹林联合氯吡格雷能进一步降低MACE发生率,并不增加出血风险。     

血红蛋白水平对冠状动脉介入治疗急性ST段抬高心肌梗死患者远期预后的影响

目的 评价血红蛋白(Hb)水平对接受急诊冠状动脉介入治疗(PCI)急性ST段抬高心肌梗死患者远期临床预后的影响.方法 150例接受了急诊PCI急性ST段抬高心肌梗死患者纳入本研究,根据基线Hb水平分为两组:Hb＜ 120 g/L组(n=21)、Hb≥120 g/L组(n=129),临床随访3年,平均(41±16)个月,观察两组间主要不良心脏事件(MACE)发生率的差异.结果 两组在心肌梗死部位、梗死相关血管、双支血管病变、三支血管病变、Killip分级≥Ⅱ级、药物支架的比例、术后TIMI3级血流的比例,以及高血压、高血脂、吸烟、肥胖、阿司匹林和氯吡格雷使用比例等差异均无统计学意义(均P＞0.05).在Hb＜ 120 g/L组,平均年龄(岁)显著高于Hb≥120 g/L组(68.5±9.2比61.2±12.2,P＜0.0001);糖尿病比例显著高于Hb≥120 g/L组(47.62％比18.60％,P=0.0032);平均的症状发作至球囊打开时间(SOTB)(h)显著高于Hb≥120 g/L组(8.8±10.5比6.3±5.0,P＜0.0001);而平均左室射血分数(LVEF)(％)、完全血运重建的比例显著低于Hb≥120 g/L组(51.25±11.34比58.79±10.38,P＜0.0001;61.9％比86.8％,P=0.0045),其差异有统计学意义.多因素Logistic回归分析显示,LVEF是随访期主要不良心脏事件(MACE)发生的独立预测因素(P=0.0140),差异有统计学意义.临床随访期3年,MACE发生16例.Hb＜ 120 g/L组的MACE发生率显著高于Hb≥120 g/L组(33.33％比6.98％,P=0.0003);随访期间其全因病死率和心性病死率也显著高于Hb≥120 g/L组(28.57％比3.10％,P＜0.0001;23.81％比2.33％,P＜0.0001),差异有统计学意义.结论 在接受急诊PCI的急性ST段抬高心肌梗死患者中,Hb水平＜120 g/L患者,其随访期MACE发生率增加,全因病死率和心性病死率增加,远期预后差.     

A prospective multicenter parallel-controlled trial of TIVOLI biodegradable-polymer-based sirolimus-eluting stent compared to ENDEAVOR zotarolimus-eluting stent for the treatment of coronary artery disease: 8-month angiographic and 2-year clinical follow-up results

Background  Available drug-eluting stents (DES) have achieved great success in reducing restenosis rates. Recently, investigators have demonstrated that the durable polymer carrier plays a significant role in DES-related hypersensitive reaction and delays vessel healing. TIVOLI stent is a novel sirolimus-eluting coronary stent with biodegradable coating containing sirolimus and polylactic-co-glycolic acid (PLGA) polymer. The present study sought to evaluate the effectiveness and safety of the TIVOLI biodegradable-polymer-based sirolimus-eluting stent in treating patients with coronary artery disease. 

Methods  A prospective, multicenter clinical trial comparing TIVOLI biodegradable coated sirolimus-eluting stent with ENDEAVOR zotarolimus-eluting stent was conducted in 324 patients (TIVOLI group: 168 patients; ENDEAVOR group: 156 patients) at 12 centers in China to demonstrate the non-inferiority of in-stent late loss with TIVOLI stent compared to ENDEAVOR stent in subjects with a maximum of two de novo native coronary artery lesions (lesion length ≤40 mm, reference vessel diameter 2.25–4.00 mm). The primary end point was angiographic in-stent late loss at 8-month. The secondary end points were clinical outcomes at 2 years, including major adverse cardiac events (cardiac death, myocardial infarction, or target-lesion revascularization) and stent thrombosis.

Results  Angiographic late lumen loss at 8 months in the TIVOLI group was superior to the ENDEAVOR group (in-stent (0.25±0.33) mm vs. (0.57±0.55) mm, diff (95% CI) –0.23 (–0.32, –0.14), P <0.0001; in-segment (0.25±0.33) mm vs. (0.42±0.55) mm, diff (95% CI) –0.13 (–0.23, –0.02), P=0.0083). The rate of in-stent binary restenosis at 8 months was reduced from 8.6% in the ENDEAVOR group to 2.9% in the TIVOLI group (P=0.0229). Compared to ENDEAVOR stent, TIVOLI stent resulted in a significant reduction in target-lesion revascularization (4.2% vs. 9.6%, P=0.0495) at 2 years. The two-year major adverse cardiac events (MACE) rate was lower for the TIVOLI group, but not significantly different (6.6% vs. 10.9%, P=0.1630).

Conclusions  TIVOLI was superior to ENDEAVOR stent with respect to late lumen loss at 8 months, and it yielded both lower rates of angiographic binary restenosis at 8 months and target lesion revascularization (TLR) at 2 years. The MACE rate at 2 years was comparable in both groups.

     

经皮冠状动脉介入术后西洛他唑抗血小板治疗的临床随访研究

目的探讨阿司匹林不耐受患者在植入药物洗脱支架(DES)后改用西洛他唑和氯吡格雷联合抗血小板治疗的安全性和有效性。方法共入选植入DES的患者108例,均为冠状动脉简单病变,其中52例患者既往有阿司匹林不耐受情况,列入研究组,改用西洛他唑和氯吡格雷抗血小板治疗;其余56例患者列入对照组,给予阿司匹林和氯吡格雷抗血小板治疗。比较两组患者1年期主要不良心脏事件以及出血、胃肠道不良反应的发生率。结果主要终点发生率差异无统计学意义(P=0.68);研究组胃肠道不良反应少,差异有统计学意义(P=0.017)。结论患者植入DES后,改用西洛他唑+氯吡格雷抗血小板治疗,较少出现胃肠道不良反应,1年期主要心脏不良事件发生率差异无统计学意义。     

Drug-eluting stent for the treatment of small coronary lesion: comparison between sirolimus- and paclitaxel-eluting stent

Background  Patients with small coronary lesions are at increased risk for repeat interventions after coronary angioplasty and stenting. The efficacy of drug-eluting stents (DES) has been demonstrated to improve the outcomes of these patients and is a focus of interest. Currently, two platforms of DES are available (sirolimus-eluting stent (SES) and paclitaxel-eluting stent (PES)). However, it has less been known that DES, SES vs PES, is superior for the treatment of small coronary lesions.
Methods  In this retrospective study, 87 consecutive patients with 151 lesions underwent implantation of coronary SES (n=68) and PES (n=83). Quantitative coronary angiography (QCA) was performed at the time of stent implantation and subsequently at 8 months post-stenting. Small vessel disease was defined as lesions in vessels with diameter 2.5 mm measured by QCA. Major adverse cardiac events (MACE) including death, thrombosis, nonfatal myocardial infarction and target lesion revascularization (TLR) were compared between the two groups.
Results  Baseline clinical characteristics and angiographic parameters were similar between the two groups. At clinical and angiographic follow-up, overall thrombosis rates were similar in both groups (0 vs 1.2%, P>0.05). The TLR and in-segment restenosis were not significantly different (19.1% vs 25.3%; 10.3% vs 10.8%, P=0.365 and P=0.913 respectively) between the two groups. The in-stent restenosis rate, however, was significantly higher in the PES group (4.4% vs 21.7%; P=0.002). Similarly, the late loss was significantly higher in the PES group ((0.140.38) mm vs (0.490.61) mm; P<0.001).
Conclusions  In this small sample-size, non-randomized study, the data indicated that implantation of SES for the treatment of patients with small coronary lesion showed more favorable results in respect of restenosis compared with PES implantation.

     

CYP2C19基因多态性对接受椎动脉支架患者预后的影响

目的 探讨在椎动脉支架置入术后患者的CYP2C19基因型分布与椎动脉支架内再发狭窄、复发性卒中和出血等预后不良事件的关系。 方法 回顾性分析205例接受CYP2C19基因检测的椎动脉狭窄并行支架置入术患者的临床资料。根据CYP2C19基因型所致肝脏对药物代谢情况,将椎动脉支架置入术后患者分为快、中、慢代谢3组,观察预后。 结果 3组患者在接受氯吡格雷及阿司匹林双联抗血小板治疗前,血小板抑制率未达标(ADP%<50%)的患者数量比较,差别无统计学意义(P>0.05); 接受氯吡格雷及阿司匹林双联抗血小板治疗6月后,差别有统计学意义(P<0.05)。3组患者在椎动脉支架置入术后规律氯吡格雷及阿司匹林双联抗血小板治疗6月内椎动脉支架内再狭窄和复发性脑梗死患者数量比较,差别有统计学意义(P<0.05),但对于其常见副作用如颅内出血及胃肠道、牙龈等其他部位出血的患者数量比较,差别无统计学意义(P>0.05)。 结论 在椎动脉支架置入术后患者中,CYP2C19基因快代谢型使用氯吡格雷及阿司匹林双联抗血小板治疗预防椎动脉支架内再狭窄、复发性脑梗死的获益明显优于中代谢型和慢代谢型,且颅内出血及胃肠道、牙龈等其他部位出血影响不明显。在椎动脉支架置入术后常规使用氯吡格雷及阿司匹林双联抗血小板治疗的患者中,CYP2C19基因多态性为影响患者椎动脉支架内再狭窄和复发性脑梗死的重要危险因素。     

A high maintenance dose of clopidogrel improves short-term clinical outcomes in patients with acute coronary syndrome undergoing drug-eluting stent implantation

Background Recurrent ischemic events occurred even during routine use of 75 mg clopidogrel in addition to aspirin, that indicated a potentially insufficient maintenance dosage of clopidogrel. The aim of the present study was to evaluate the short-term efficacy and safety of a 150 mg maintenance dose of clopidogrel following a 600 mg loading dose in patients with an acute coronary syndrome （ACS） undergoing drug eluting stent （DES） implantation.
Methods Between November 2005 and November 2006, a total of 813 consecutive ACS patients undergoing DES implantation were enrolled. A 600 mg loading dose was administered before percutaneous coronary intervention （PCI） and patients were randomized to receive clopidogrel 75 mg or 150 mg for 30 days in addition to 300 mg aspirin daily. Primary end points were the composite of cardiac death, non-fatal myocardial infarction （MI） and urgent target vessel revascularization （UTVR）. Secondary end points included stent thrombosis （ST）, major and minor bleeding events at 30 days. Results At a follow-up period of 30 days, 4 （1.0%） patients in the 150 mg group and 9 （2.2%） patients in the 75 mg group （P 〉0.05） reached the primary end points. There was no significant difference in the incidences of MI （0.5% vs 1.2%, P〉0.05）, UTVR （0.7% vs 2.0%, P 〉0.05）, and cardiac death （0.2% vs 0.2%, P 〉0.05） between the two groups. The incidence of ST （0 vs 1.5%, P 〈0.05） was significantly lower in the 150 mg group than that in the 75 mg group. There were no significant differences between both groups regarding the risk of major （0.2% vs 0, P 〉0.05） or minor （0.5% vs 0.2%, P 〉0.05） bleedings.
Conclusion A high clopidogrel maintenance dose of 150 mg daily following a 600 mg loading dose for the first month after PCI procedure reduces the risk of ST and appears to be safe in patients with ACS undergoing DES implantation.     

Gender difference on five-year outcomes of EXCEL biodegradable polymer-coated sirolimus-eluting stents implantation: results from the CREATE study

Background The gender difference on long-term outcome in unselected patients after percutaneous coronary intervention (PCI) has not yet been fully investigated.This study aimed to evaluate the gender d...     

Comparison of paclitaxal vs. sirolimus eluting stents with bio-degradable polymer for the treatment of coronary bifurcation lesions: subgroup analysis from DKCRUSH-I and DKCRUSH-II studies

Background  The difference in clinical outcome between paclitaxal-eluting stents (PES) and sirolimus-eluting stents with bio-degradable polymer (SES-BDP) for bifurcation lesions remains unclear. The present study aimed to investigate the one-year clinical outcome after DK crush stenting using PES (Taxus^TM) vs. SES-BDP (Excel^TM) from our database.

Methods  A total of 275 patients (90 from the DKCRUSH-I and 185 from the DKCRUSH-II study) were studied. The primary endpoint was the occurrence of major adverse cardiac events (MACE) at 12 months; including cardiac death, myocardial infarction (MI), or target vessel revascularization (TVR). The rate of binary restenosis and stent thrombosis served as secondary endpoints.

Results  At follow-up, minimal luminal diameter (MLD) in the Taxus group was (2.11±0.66) mm, with resultant increased target lesion revascularization (TLR) 12.2% and TVR 14.4%, significantly different from the Excel group; (2.47±0.56) mm, P <0.001, 3.2%, P=0.006, 4.9%, P=0.019, respectively. As a result there was a significant difference in MACE between the Taxus (20.0%) and Excel (10.3%, P=0.038) groups. Overall stent thrombosis was monitored in 11 patients (4.0%), with five in the Excel group (2.7%) and six in the Taxus group (6.7%). All stent thrombosis in the Excel group was classified as early, and all were defined as late in the Taxus group.

Conclusion  The Excel stent had lower rate of stent thrombosis, TLR, TVR, and composite MACE at 12-month after an indexed stenting procedure, compared to the Taxus stent.

     

Midterm outcomes of prospective, randomized, single-center study of the Janus tacrolimus-eluting stent for treatment of native coronary artery lesions

Background Long-term efficacy and safety of tacrolimus-eluting stent （Janus） for treatment of coronary artery disease in percutaneous coronary interventions （PCI） ＂real wodd＂ is uncertain. The aim of this study was to evaluate the efficacy and safety of Janus stent for treating coronary heart disease in PCI daily practice, the safety of 4-month clopidogrel therapy after Janus stent implantation and the feasibility for treating patients with acute myocardial infarction （AMI） for first time. Methods From February 20, 2006 to August 26, 2006, a total of 200 patients were enrolled and randomly assigned to receive either Janus stent （n=100） or bare metal stent （Tecnic Carbostent, n=100）. All patients were administered with clopidogrel for 4 months and aspirin for life long after stenting. Results Baseline clinical and angiographic characteristics were comparable between the two groups. AMI was present in 37% of patients with Janus and 36% with Tecnic Carbostent. At an average of 246-day follow-up, major adverse cardiac events （MACE） was 6% with the Janus stent and 15% with the Tecnic Carbostent （P=0.038）. Primary events included 1 cardiac death, 1 myocardial infarction （MI） due to subacute stent thrombosis and 13 target lesion revasculadzations （TLR） due to restenosis in patients with Tecnic Carbostent and 6 TLR due to restenosis in patients with Janus stent. Although all patients had discontinued clopidogrel for an average of 126 days, there was no additional thrombotic event in the two groups. Conclusions Janus stent is efficient in reducing MACE compared with Tecnic Carbostent at an average of 8-month follow-up. Discontinuation of clopidogrel at 4 months after PCI is safe for patients with Janus stent, including AMI patients Long-term efficacy of Janus stent in reducing restenosis requires further study.     

抗血小板药对急性脑梗死患者血小板膜糖蛋白CD62P、CD63表达的调控作用

目的抗血小板药对急性脑梗死(ACI)患者血小板膜糖蛋白CD62P(α颗粒膜糖蛋白)、CD63(溶酶体膜蛋白)表达的调控作用。方法选取我院2014年6月至2015年6月70例ACI患者为研究对象,设为ACI组,另选取于我院体检的70例健康者为正常组;又将ACI患者抽签随机分为A组与B组,每组35例。A组给予氯吡格雷治疗,B组给予阿司匹林治疗。比较ACI组与正常组CD62P、CD63表达高低,记录A组与B组对CD62P、CD63表达的调控作用及血清高敏C反应蛋白(hs-CRP)、IL-6、IL-8水平。结果 ACI组血小板膜糖蛋白CD62P、CD63表达均高于正常组,有统计学意义(P0.05)。治疗14 d后A组血小板膜糖蛋白CD62P、CD63表达水平分别为(7.08±3.25)%、(5.19±2.24)%,均低于B组(8.98±3.02)%、(6.99±2.16)%,有统计学意义(P0.05)。治疗后A组hs-CRP水平低于B组,有统计学意义(P0.05)。结论 ACI患者CD62P、CD63表达水平较高,抗血小板药物可降低CD62P、CD63表达水平,且氯吡格雷作用效果优于阿司匹林,氯吡格雷还可降低患者炎症水平。