Related Experiment Video
Updated: Mar 11, 2026
Novel and Innovative Hybrid Technique for Type A Aortic Dissection
Published on: March 28, 2025
3D printing-guided stent grafting vs. Sun procedure in type B aortic dissection: a propensity score-matched
Shilin Liu1, Erna Sha2, Lei Duan2
1Department of Physical Examination and Health Management, The Second Affiliated Hospital of Xinjiang Medical University, Ürümqi, China.
Introduction:
To compare perioperative outcomes and long‑term effects of 3D printing-guided personalised stent grafting versus conventional Sun procedure in type B aortic dissection (TBAD).
Methods:
From January 2018 to October 2024, 150 TBAD patients were enrolled: 84 underwent 3D printing-assisted stent grafting and 66 received the Sun procedure. After 1:1 propensity score matching (PSM), 74 pairs with balanced baseline characteristics were analysed. Surgical metrics, perioperative and follow‑up complications, aortic remodelling, and patient satisfaction were assessed.
Results:
Post‑matching, baseline data showed no significant differences (p > 0.05). Compared with the Sun group, the 3D printing group had shorter operative time, reduced blood loss, lower 24‑h drainage, shorter ventilator support, ICU stay, and hospitalisation (all p < 0.05). Complication rates were lower and patient satisfaction higher (*p < 0.05). At 6 and 12 months, the 3D printing group demonstrated greater true lumen expansion and false lumen reduction at the aortic isthmus and pulmonary artery bifurcation (*p < 0.05), with no difference in thrombosis rates (p > 0.05).
Conclusions:
3D printing-assisted individualised stent grafting offers superior perioperative outcomes, fewer complications, enhanced aortic remodelling, and higher patient satisfaction compared with the Sun procedure, supporting its broader clinical application.
