• Liyun Zhao, Sijie Zhou, Taibing Fan, Bin Li, Weijie Liang, and Haoju Dong.
• Department of Cardiovascular Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, China.
• J Card Surg. 2018 Jan 1; 33 (1): 24-27.

ObjectiveTo assess the clinical value of three-dimensional (3D) printing technology for treatment strategies for complex double outlet right ventricle (DORV).MethodsTwenty-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.ResultsThere was good correlation (r = 0.977) between 3D printed models and CTA data. Patients in the 3D printing group had shorter aortic cross-clamp time (102.88 vs 127.76 min, P = 0.094) and cardiopulmonary bypass time (151.63 vs 184.24 min; P = 0.152) than patients in the control group. Patients with 3D printed models had significantly lower mechanical ventilation time (56.43 vs 96.76 h, P = 0.040) and significantly shorter intensive care unit time (99.04 vs 166.94 h, P = 0.008) than patients in the control group.Conclusions3D printed models can accurately demonstrate anatomic structures and are useful for pre-operative treatment strategies in DORV.© 2018 Wiley Periodicals, Inc.

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