Xiaojun Li1, Hui Cai2, Xiaohai Cui3, Peilong Cao4, Jing Zhang3, Gang Li3, Jia Zhang3. 1. Second Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China lixj1975@fmmu.edu.cn. 2. Department of Anesthesia, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China. 3. Second Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China. 4. Department of Pathology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
Abstract
OBJECTIVES: Repositioning of the mediastinum with implantation of a prosthesis seems the favoured approach to treat late complications of pneumonectomy caused by mediastinal shift. However, the traditional prostheses are not designed specifically for use in the thoracic cavity, sometimes resulting in failure of treatment for many reasons. The aim of our study was to develop a novel prosthesis to promote prevention or treatment of late postpneumonectomy complications. METHODS: Using 3D printing technology, we created a novel mimetic lung model replicating the native one and then transplanted it into the thoracic cavity of postpneumonectomy dogs to maintain the original position of the mediastinum. Postoperative morbidity and mortality of late complications were compared between transplanted and non-transplanted groups. The safety and feasibility of implanting a 3D printed prosthesis were also evaluated by chest computed tomography (CT) scan and pathological examination. RESULTS: At the 1-year follow-up, pneumonectomy dogs with 3D printed lungs showed less morbidity and mortality of late complications. CT images indicated dynamic mediastinal shift in pneumonectomy-only dogs with enlarged contralateral lungs. Nevertheless, there was no obvious change in the position of the mediastinum in 3D printed lung transplanted individuals. Moreover, the 3D printed lungs did not cause any additional side effects and revealed good histocompatibility and tolerance of recipients. CONCLUSIONS: Our experiences indicated the safety, feasibility and efficacy of transplantation with 3D printed lungs for prevention of late postpneumonectomy complications and provided a practical and possibly unique clinical application of 3D printing technology for surgical therapy.
OBJECTIVES: Repositioning of the mediastinum with implantation of a prosthesis seems the favoured approach to treat late complications of pneumonectomy caused by mediastinal shift. However, the traditional prostheses are not designed specifically for use in the thoracic cavity, sometimes resulting in failure of treatment for many reasons. The aim of our study was to develop a novel prosthesis to promote prevention or treatment of late postpneumonectomy complications. METHODS: Using 3D printing technology, we created a novel mimetic lung model replicating the native one and then transplanted it into the thoracic cavity of postpneumonectomy dogs to maintain the original position of the mediastinum. Postoperative morbidity and mortality of late complications were compared between transplanted and non-transplanted groups. The safety and feasibility of implanting a 3D printed prosthesis were also evaluated by chest computed tomography (CT) scan and pathological examination. RESULTS: At the 1-year follow-up, pneumonectomy dogs with 3D printed lungs showed less morbidity and mortality of late complications. CT images indicated dynamic mediastinal shift in pneumonectomy-only dogs with enlarged contralateral lungs. Nevertheless, there was no obvious change in the position of the mediastinum in 3D printed lung transplanted individuals. Moreover, the 3D printed lungs did not cause any additional side effects and revealed good histocompatibility and tolerance of recipients. CONCLUSIONS: Our experiences indicated the safety, feasibility and efficacy of transplantation with 3D printed lungs for prevention of late postpneumonectomy complications and provided a practical and possibly unique clinical application of 3D printing technology for surgical therapy.
Authors: Blake N Johnson; Karen Z Lancaster; Gehua Zhen; Junyun He; Maneesh K Gupta; Yong Lin Kong; Esteban A Engel; Kellin D Krick; Alex Ju; Fanben Meng; Lynn W Enquist; Xiaofeng Jia; Michael C McAlpine Journal: Adv Funct Mater Date: 2015-09-18 Impact factor: 18.808
Authors: Michaela L Comrie; Gabrielle Monteith; Alex Zur Linden; Michelle Oblak; John Phillips; Fiona M K James Journal: PLoS One Date: 2019-03-25 Impact factor: 3.240