Effect of intracoronary tirofiban in patients with ST-elevation myocardial infarction after primary percutaneous coronary intervention
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摘要: 目的:探讨冠状动脉 (冠脉) 使用替罗非班对急性ST段抬高心肌梗死 (STEMI) 患者在急诊冠脉介入治疗 (PCI) 术后TIMI血流、肌酸激酶同工酶 (CK-MB) 及肌钙蛋白 (TnT)、主要心血管不良事件 (MACE) 的影响。方法:将164例入选的行急诊PCI的STEMI患者随机分为冠脉使用替罗非班组 (冠脉组, 84例) 和静脉使用替罗非班组 (静脉组, 80例), 在急诊PCI术前及完成后测定梗死相关血管 (IRA) 的TIMI血流, 在发病12、24h采静脉血查CK-MB及TnT。观察PCI术后2h心电图ST段回落情况, 观察PCI术后3d出血事件。随访30d记录MACE。结果:与静脉组比较, 冠脉组明显改善PCI术后IRA的TIMI血流[(2.95±0.17):(2.84±0.22), P<0.05], 明显降低12、24h时的CK-MB与TnT水平 (均P<0.05), 明显增加PCI术后2h心电图ST段回落>70%的例数 (P<0.05)。两组术后出血事件及30dMACE没有显著差异。结论:对于行急诊PCI的STEMI患者, 与静脉使用替罗非班比较, 冠脉使用替罗非班可有效改善心肌灌注, 减小心肌梗死面积。Abstract: Objective: To explore the effect of intracoronary tirofiban on TIMI flow grade, creatine kinase MB (CK-MB), troponin T (TnT), major adverse cardiovascular events (MACE) in patients with ST-elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PCI).Method: All 164 patients with STEMI undergoing primary PCI were selected and randomized into intracoronary tirofiban group (n=84) and intravenous tirofiban group (n=80).TIMI flow grade on infarction related artery (IRA), CK-MB, and TnT were measured at baseline and after PCI.ST segment resolution was observed in 2hours after primary PCI.The incidence of bleeding complications was observed in 3days after primary PCI.The incidence of MACE was recorded at 30days after primary PCI.Result: Compared with intravenous tirofiban group, TIMI flow grade on IRA was significantly improved[(2.95±0.17) vs (2.84±0.22), P<0.05], the levels of CK-MB and TnT in 12 hours and 24hours after PCI were significantly decreased (all P<0.05), the incidence of ST segment resolution greater than 70%in 2hours after PCI was increased (P<0.05) in intracoronary tirofiban group.The incidence of bleeding complications and MACE at 30days after primary PCI was showed no significant difference between 2 groups.Conclusion: In patients with STEMI undergoing primary PCI, intracoronary tirofiban may improve myocardial reperfusion and decrease infarction size more effectively compared with intravenous tirofiban.
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