Department of Cardiovascular Surgery, Methodist DeBakey Heart & Vascular Center, The Methodist Hospital, Houston, TX, USA.
J Vasc Surg. 2012 Jul;56(1):201-4. doi: 10.1016/j.jvs.2011.12.084. Epub 2012 Apr 12.
Late presentation of aortic injuries secondary to internal fixation hardware is uncommon and generally associated with pseudoaneurysm formation. We herein present a case of transmural migration of a pedicle screw into the descending thoracic aorta, which was revealed incidentally by computed tomography scan after almost 4 years of hardware implantation. Approximately 75% of the pedicle screw was exposed to the bloodstream, and was successfully removed using endovascular segmental exclusion to avoid aortic cross-clamping and an open approach via left thoracotomy. This case illustrates the successful repair of an iatrogenic aortic injury using a hybrid technique.
内固定硬件导致的主动脉损伤后期表现并不常见,通常与假性动脉瘤形成有关。本文报告 1 例椎弓根螺钉经壁内迁移至降主动脉,在植入内固定硬件近 4 年后,经计算机断层扫描偶然发现。约 75%的椎弓根螺钉暴露于血流中,通过血管内节段性隔离成功取出,避免了主动脉阻断和经左开胸的开放手术。该病例说明采用杂交技术成功修复医源性主动脉损伤。