Early results of 3D printing-assisted stent with in-vitro pre-fenestration technique in the treatment of complex type B aortic dissection
10.3969/j.issn.1002-1671.2024.12.027
- VernacularTitle:3D打印辅助支架体外预开窗技术治疗复杂B型主动脉夹层的早期结果
- Author:
Zichen WU
1
;
Wenliang WANG
;
Hao XU
;
Hongtao LIU
Author Information
1. 徐州医科大学附属医院介入放射科,江苏 徐州 221006
- Keywords:
aortic dissection;
3D printing;
endovascular repair;
fenestration
- From:
Journal of Practical Radiology
2024;40(12):2050-2053
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the clinical efficacy and postoperative aortic changes of 3D printing-assisted stent with in-vitro pre-fenestration technique in the treatment of complex type B aortic dissection.Methods A retrospective analysis was conducted on 28 patients with complex type B aortic dissection who underwent thoracic endovascular aortic repair(TEVAR)using stent with in-vitro pre-fenestration technique.The patients were divided into two groups based on the methods of stent with in-vitro pre-fenestration:the 3D printing-assisted stent pre-fenestration group(3D printing group)consisting of 13 patients and traditional stent pre-fenestration group(traditional group)consisting of 15 patients.Various parameters,including hospital duration,surgical duration,duration of stent pre-fenestration in vitro,dose of contrast agent,intraoperative blood loss,immediate postoperative internal leakage rate,30 d postoperative internal leakage rate,30 d postoperative mortality,and the change rate of true and false lumen diameter[the change rate of true and false lumen diameter=(postoperative true and false lumen diameter-preoperative true and false lumen diameter)/preoperative true and false lumen diameter× 100％],were compared between the two groups.Results Compared with the traditional group,the 3D printing group exhibited a considerable reduction in surgical duration[(148.46±27.20)min vs(175.46±22.04)min,P＜0.05].Additionally,the 30 d postoperative type Ⅰ internal leakage rate was lower in the 3D printing group(X2=4.044,P=0.044).Moreover,the change(dilation)rate of true lumen diameter in stent coverage section showed a notable increase in the 3D printing group(P＜0.05).Conclusion The use of 3D printing-assisted stent with in-vitro pre-fenestration has been proven to be safe and effective in the treatment of complex type B aortic dissection.It offers notable advantages,including the reduction of surgical duration,a lower risk of type Ⅰ internal leakage and significant redilation of the true aortic lumen after surgery.
