Omar Hesham R, Mangar Devanand, Sullebarger J Thompson, Sprenker Collin, Camporesi Enrico M
Internal Medicine Department, Mercy Hospital and Medical Center, Chicago, IL, USA.
Department of Anesthesiology, Tampa General Hospital, Tampa, FL, USA.
J Cardiol Cases. 2013 Dec 13;9(2):57-60. doi: 10.1016/j.jccase.2013.10.004. eCollection 2014 Feb.
Very late stent thrombosis is a feared complication after drug-eluting stent (DES) implantation. Several factors related to the patient, generation and type of the deployed stent, procedure, and premature antiplatelet withdrawal are known to contribute to this complication. Herein, we describe a case of a Jehovah's witness patient who developed simultaneous two-vessel 1st generation DES thrombosis 5.4 and 3.5 years after deployment [with sparing of the bare metal stent (BMS)] in the immediate post-operative period secondary to clopidogrel withdrawal. The case was complicated by ST-segment elevation myocardial infarction, cardiogenic shock, and a ventricular fibrillation cardiac arrest requiring urgent percutaneous coronary intervention. The acute thrombosis of DESs with sparing of the BMS exemplify how they are more prone to this complication due to delayed endothelialization of stent struts and neoinitimal coverage. < Extreme caution should be excercised when attempting to withdraw antiplatelets immediately before surgery in patients with drug eluting stents even if the recomended 12-month period of dual antiplatelet therapy has elapsed because of the risk of very late stent thrombosis.>.
晚期支架血栓形成是药物洗脱支架(DES)植入术后令人担忧的并发症。已知与患者、所植入支架的代际和类型、手术过程以及过早停用抗血小板药物等几个因素会导致这种并发症。在此,我们描述了一例耶和华见证会患者的病例,该患者在植入第一代DES后5.4年和3.5年同时出现双支血管血栓形成(裸金属支架未受累),这发生在术后即刻因停用氯吡格雷所致。该病例并发ST段抬高型心肌梗死、心源性休克和心室颤动心脏骤停,需要紧急经皮冠状动脉介入治疗。DES急性血栓形成而BMS未受累,例证了由于支架小梁的内皮化延迟和新生内膜覆盖,DES更容易发生这种并发症。<对于植入药物洗脱支架的患者,即使推荐的12个月双联抗血小板治疗期已过,在手术前即刻试图停用抗血小板药物时也应极其谨慎,因为存在晚期支架血栓形成的风险。>