Department of Clinical Medicine, Cardiovascular Sciences and Immunology, Federico II University, Naples, Italy.
J Cardiovasc Med (Hagerstown). 2009 Nov;10(11):875-8. doi: 10.2459/JCM.0b013e32832e669a.
Distal embolization during percutaneous coronary intervention (PCI) of saphenous vein graft (SVG) lesions is associated with a high risk of myonecrosis and myocardial infarction. PCI guidelines advocate the use of distal embolic protection devices, when technically feasible, in patients undergoing PCI for SVG disease. To date, alternative management strategies are not fully investigated. We report a case of an 84-year-old male patient with acute coronary syndrome who underwent PCI for a quite occlusive stenosis of an SVG on the first diagonal branch of the left anterior descending artery complicated by wide endoluminal thrombosis with poor antegrade coronary blood flow and absent opacity of the distal first diagonal vessel. A strategy of delayed PCI after upstream, 48 h long tirofiban administration in order to obtain a thrombus burden reduction was decided. After tirofiban administration, a high-level thrombus resolution was obtained, with a significant improvement in coronary flow, and a successful PCI with stenting was performed. There was neither clinical nor instrumental periprocedural sign of ischemia, and the patient remained asymptomatic throughout his hospital stay. Preprocedural tirofiban administration followed by PCI with stenting of an SVG thrombotic lesion without a distal protection device might be a well-tolerated and feasible option for patients with degenerated SVG disease. Further studies are needed to further expand our findings.
经皮冠状动脉介入治疗(PCI)中隐静脉桥(SVG)病变的远端栓塞与肌坏死和心肌梗死的风险增加相关。PCI 指南主张在 SVG 疾病患者接受 PCI 时,在技术上可行的情况下使用远端栓塞保护装置。迄今为止,替代管理策略尚未得到充分研究。我们报告了一名 84 岁男性患者的病例,该患者因左前降支第一对角支的 SVG 相当闭塞性狭窄而发生急性冠脉综合征,该狭窄伴有广泛的腔内血栓形成,前向血流较差,第一对角支远端不透光。决定采用上游 48 小时长替罗非班给药的延迟 PCI 策略,以减少血栓负荷。替罗非班给药后,血栓得到高度溶解,冠状动脉血流显著改善,并成功进行了 PCI 支架置入术。围手术期既没有临床缺血的迹象,也没有仪器缺血的迹象,患者在整个住院期间都没有症状。在没有远端保护装置的情况下,对 SVG 血栓性病变进行替罗非班预给药后再进行 PCI 支架置入术,可能是一种耐受良好且可行的选择,适用于 SVG 病变退行性变的患者。需要进一步的研究来进一步扩大我们的发现。