Three-dimensional printing enhances preparation for repair of double outlet right ventricular surgery

Abstract

Objective: To assess the clinical value of three-dimensional (3D) printing technology for treatment strategies for complex double outlet right ventricle (DORV).Methods: Twenty-five patients with complex double outlet right ventricle were enrolled in this study. The patients were divided into two groups: 3D printing group (eight patients) and a non-3-D printing control group (17 patients). The cardiac images of patients in the 3D printing group were transformed to Digital Imaging and Communications and were segmented and reconstructed to create a heart model. No cardiac models were created in the control group. A Pearson coefficient analysis was used to assess the correlation between measurements of 3D printed models and computed tomography angiography (CTA) data. Pre-operative assessment and planning were performed with 3D printed models, and then operative time and recovery time were compared between the two groups. The 3D printing technique is a process of creating 3D solid objects from digital files and this technology has been applied to cardiovascular surgery in recent years. 3D printing technology can print precise heart models which can provide detailed information of intracardiac and extracardiac structures.This has aided in the surgical resection of cardiac tumors and has been used to assist in the repair of type A dissections. 2,3 This study was undertaken to assess the role of 3D printed models in planning pre-operative strategies for the surgical repair of DORV.CONGENITAL HEART DISEASE 24 |

Type A interrupted aortic arch and type III aortopulmonary window with anomalous origin of the right pulmonary artery from the aorta

“…To overcome this potential complication, some have advocated the routine use of patch augmentation of the translocated pulmonary artery. Unfortunately, right pulmonary artery stenosis may still occur in spite of using the patch as seen in our patient . Others have tried to prevent right pulmonary artery stenosis by using the defects from the aortopulmonary window for the aortic and right pulmonary artery anastomosis.…”

“…Echocardiography and CT angiography are essential in making the diagnosis of these complex lesions. Three‐dimensional printing has also been shown to be valuable in helping to plan the reconstruction of these complex congenital anomalies . Early surgical repair is advocated to prevent the development of pulmonary hypertension which may lead to death .…”

Pseudoaneurysm formation after valve sparing root replacement in children with Loeys-Dietz syndrome

“…After establishing cardiopulmonary bypass, pseudoaneurysms can be repaired through three principle methods: (1) direct closure of the ostium using pledgeted sutures; (2) closure of the ostium using patches; and (3) aortic graft replacement . 3D imaging and multi‐dimensional modeling more accurately delineate the anatomy of pseudoaneurysms and dissections, and have been shown to facilitate the repairs of pediatric patients undergoing complex congenital procedures . Direct closure is generally reserved for small, uncomplicated defects while patch repair is indicated in patients with larger defects .…”

3D printing and modeling of congenital heart defects: A technical review

“…One of the most common uses of 3D printing in medicine is creating CHD anatomical models due to the complex anatomical relationships of vital structures. These models can be used as a visualization and simulation tool for surgical training, to improve patient education, and to enhance crossspecialty communication (Biglino et al, 2015;Yoo, Spray, Austin, Yun, & van Arsdell, 2017;Zhao, Zhou, Fan, Li, Liang, & Dong, 2018).…”