J Am Coll Cardiol:复杂靶病变患者行PCI术后 延长DAPT疗程能否带来获益?

2017-12-26 吴星 环球医学

2017年10月31日,发表于《J Am Coll Cardiol》上的一项研究,考察了经皮冠状动脉介入(PCI)治疗后,延长双抗血小板治疗(DAPT)的复杂性和结果。

2017年10月31日,发表于《J Am Coll Cardiol》上的一项研究,考察了经皮冠状动脉介入(PCI)治疗后,延长双抗血小板治疗(DAPT)的复杂性和结果。

背景:解剖学复杂靶病变行冠脉支架的患者,如果延长DAPT可能具有不同的风险和获益。

目的:旨在基于解剖学复杂靶病变的存在与否,评估PCI治疗后进行30个月vs 12个月DAPT的影响。

方法:在DAPT研究中,在入组患者(25416人)和随机分组患者(11554人)中,评估了心肌梗死(MI)或支架血栓和中度/严重出血的复合结局。复杂病变具有以下特征:无保护左主干,>2个病变/血管,长度≥30mm,侧枝分岔≥2.5mm,静脉旁路移植术,含血栓病变。根据复杂特征数量的增加评估事件,根据DAPT评分进行比较。

结果:纳入的具有多个复杂靶病变的患者在PCI后的首个12个月具有较高的MI或支架血栓发生率(3.9% vs 2.4%;P<0.001)。不论是否具有复杂解剖,12个月时无事件的患者中,12~30个月的MI或支架血栓的发生率均相似(3.5% vs 2.9%;P=0.07)。继续噻吩并吡啶超过12个月的患者中,与安慰剂相比,MI或支架血栓的减少在具有(2.5% vs 4.5%;HR,0.55;95% CI,0.38~0.79;P=0.001)和不具有(2.0% vs 3.8%;HR,0.52;95% CI,0.39~0.69;P<0.001)复杂解剖的患者中相似(P=0.81),中度/严重出血的增加也相似(P=0.44)。具有复杂解剖病变且持续噻吩并吡啶的患者中,与DAPT评分<2的患者相比,DAPT评分≥2的患者在MI(3.0% vs 6.1%;P<0.001),或支架血栓(1.7% vs 2.3%;P=0.42)的降低程度高得多(比较风险差异的P=0.03)。

结论:解剖学复杂靶病变与缺血性事件的增加相关,尤其是PCI后第一年。前12个月无事件的患者中,延长DAPT的获益在不论是否具有复杂病变的患者中相似。不论是否具有复杂病变的患者中,较高的DAPT评分可识别能从延长治疗中获益最多的患者。

原始出处:

Yeh RW, Kereiakes DJ, Steg PG, et al. Lesion Complexity and Outcomes of Extended Dual Antiplatelet Therapy After Percutaneous Coronary Intervention. J Am Coll Cardiol. 2017 Oct 31;70(18):2213-2223. doi: 10.1016/j.jacc.2017.09.011.

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