Analysis of the effectiveness of 3D printing technology in predicting the risk of coronary artery obstruc-tion during transcatheter aortic valve replacement through the femoral artery route
Li Lin
Cheng Shuai
Guo jing
Liang Shanfu
Wu Xiang
Lv Haoqing
Zhou Qiang
Zhang Shenwei
Abstract：Objective To evaluate the effectiveness of 3D printing technology in predicting the risk of coronary artery occlusion during transcatheter aortic valve replacement(TAVR)via femoral artery.Methods Clinical data were collected from 100 patients who had undergone transcatheter aortic valve replacement via femoral artery at the 7th People's Hospital of Zhengzhou from September 2017 to November 2021.For the retrospective analysis,45 patients exhibiting severe stenosis,with or without regurgitation,were selected.Data for the CT group were derived from computed tomography angiography(CTA),whereas the data for the 3D group were sourced from the aortic root models that had been reconstructed using 3D printing technology based on preoperative imaging data.Variables measured included the heights of the left and right coronary orifices,types of valve leaflets,degrees of stenosis,extent and distribution of calcification,and the anatomical structures of the aortic valve,such as the diameters of the valve annulus,the left ventricular outflow tract,and the ascending aorta at 4 cm from the valve.The objective was to ascertain if significant differences existed between the two data sets.Results Assessments were conducted using parameters such as annulus area,outflow tract area,sinus size,and coronary ostium height;no statistically significant differences were observed between the measurements obtained via 3D printing and CT(P＞0.05).However,3D printing demonstrated greater accuracy than CT in predicting the risk of coronary artery occlusion based on parameters including the long and short diameters of the annulus,annulus circumference,outflow tract circumference,calcification volume at the root,ascending aorta diameter,and sinus junction diameter,with these differences being statistically significant(P＜0.05).Conclusion 3D printing technology offers greater accuracy than CT imaging in predicting the risk of coronary artery occlusion during transcatheter aortic valve replacement via the femoral artery approach.
Keywords：Aortic stenosisSurgical aortic valve replacement3D printing technology
Publication Date：2024-11-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 1314-1317,1322 )