Kaul Pankaj, Adluri Krishna, Javangula Kalyana, Baig Wasir
Yorkshire Heart Centre, Leeds General Infirmary, Great George Street, Leeds, LS1 3EX, UK.
J Cardiothorac Surg. 2009 Feb 24;4:12. doi: 10.1186/1749-8090-4-12.
A 59 year old man underwent mechanical tricuspid valve replacement and removal of pacemaker generator along with 4 pacemaker leads for pacemaker endocarditis and superior vena cava obstruction after an earlier percutaneous extraction had to be abandoned, 13 years ago, due to cardiac arrest, accompanied by silent, unsuspected right atrial perforation and exteriorisation of lead. Postoperative course was complicated by tricuspid valve thrombosis and secondary pulmonary embolism requiring TPA thrombolysis which was instantly successful. A review of literature of pacemaker endocarditis and tricuspid thrombosis along with the relevant management strategies is presented. We believe this case report is unusual on account of non operative management of right atrial lead perforation following an unsuccessful attempt at percutaneous removal of right sided infected pacemaker leads and the incidental discovery of the perforated lead 13 years later at sternotomy, presentation of pacemaker endocarditis with a massive load of vegetations along the entire pacemaker lead tract in superior vena cava, right atrial endocardium, tricuspid valve and right ventricular endocardium, leading to a functional and structural SVC obstruction, requirement of an unusually large dose of warfarin postoperatively occasioned, in all probability, by antibiotic drug interactions, presentation of tricuspid prosthetic valve thrombosis uniquely as vasovagal syncope and isolated hypoxia and near instantaneous resolution of tricuspid prosthetic valve thrombosis with Alteplase thrombolysis.
一名59岁男性因起搏器心内膜炎和上腔静脉梗阻接受了机械性三尖瓣置换术,并移除了起搏器发生器及4根起搏导线。13年前,因心脏骤停不得不放弃早期的经皮导线拔除术,当时伴有无症状、未被察觉的右心房穿孔和导线外露。术后病程因三尖瓣血栓形成和继发性肺栓塞而复杂化,需要进行组织型纤溶酶原激活剂(TPA)溶栓治疗,且立即取得成功。本文对起搏器心内膜炎和三尖瓣血栓形成的文献以及相关管理策略进行了综述。我们认为该病例报告不同寻常,原因如下:在经皮拔除右侧感染的起搏导线尝试失败后,右心房导线穿孔采用了非手术治疗;13年后在胸骨切开术时偶然发现穿孔导线;起搏器心内膜炎表现为上腔静脉、右心房内膜、三尖瓣和右心室内膜沿整个起搏导线路径有大量赘生物,导致功能性和结构性上腔静脉梗阻;术后因抗生素药物相互作用,很可能需要使用异常大剂量的华法林;三尖瓣人工瓣膜血栓形成独特地表现为血管迷走性晕厥和单纯性低氧血症;使用阿替普酶溶栓后三尖瓣人工瓣膜血栓形成几乎立即得到缓解。