限制性裸支架在急性Standford A型主动脉夹层中的应用

Efficacy of restrictive bare stent in the treatment of acute Standford type A aortic dissection

目的观察限制性裸支架释放于急性Standford A型主动脉夹层支架象鼻远端的应用效果。方法回顾性分析2016年11月至2018年2月我院大血管中心对急性Standford A型主动脉夹层需行主动脉弓置换+支架象鼻手术同期行限制性裸支架置入22例患者的临床资料,其中男19例、女3例,平均年龄34~68(49.72±8.05)岁。先将裸支架释放于胸降主动脉内,再将支架象鼻置于裸支架内,出院前复查主动脉血管CT造影,观察支架位置及并发症情况。结果 1例患者裸支架置入时阻力较大,自行脱出而放弃置入;余21例患者成功完成限制性裸支架置入。术后1例患者住院期间因大面积脑梗死而死亡,1例截瘫。生存并成功置入裸支架的20例患者均定期随访4~21(13.00±6.14)个月,随访期内无卒中、死亡。计算机体层扫描血管成像检查示支架形态、位置良好,无移位及Ⅲ型内漏发生,未见支架远端新发破口。结论作为支架象鼻手术的辅助治疗手段,限制性裸支架的使用能减少支架源性新发破口的发生且可以明显扩张支架象鼻远端血管真腔口径,主动脉重塑效果良好。

Objective To observe the efficacy of restrictive bare stent released on the distal end of the trunk of Standford type A aortic dissection. Methods The clinical data of 22 patients with Standford type A aortic dissection requiring aortic arch replacement and trunk surgery and selected for restrictive bare stent placement from November 2016 to February 2018 in our hospital were retrospectively analyzed. Among them, there were 19 males and 3 females, aged 34-68(49.72±8.05) years. The bare stent was released in the descending thoracic aorta, and the stented elephant trunk was placed in the bare stent. The aortic computerized tomography angiography was reviewed before discharge and the stent position and complications were observed. Results One patient failed to be implanted with bare stents due to a greater resistance and prolapse during implantation. Bare stents were successfully implanted in the remaining 21 patients. One patient died of large-area cerebral infarction after surgery and one patient suffered paraplegia. Twenty patients who survived and successfully implanted bare stents were followed up at regular intervals for 4-21(13.00±6.14) months. No stroke or death occurred during the follow-up. The computerized tomography angiography showed good stent morphology and position, and no displacement or type Ⅲ endoleak. No stent graft-induced new entry was found.Conclusion As an adjunct to stented elephant trunk, the use of restrictive bare stents can reduce the possibility of recurrence of a distal stent fracture, significantly expand the narrowest segment and true lumen caliber near the endoluminal graft. Aortic remodeling works well.