ObjectiveTo investigate the safety and feasibility of enhanced recovery after surgery (ERAS) in radical gastrectomy. MethodsThe Cochrane library, PubMed, EMBASE, and Chinese biomedical literature databases were searched to identify randomized controlled trails including patients undergoing radical gastrectomy surgery who were treated by ERAS or traditional methods.The five outcome variables were the time to passage of first flatus and first defecation, the length of postoperative hospital stay, medical cost, and postoperative complications. ResultsFifteen published reports involving 1 533 participants met the inclusion criteria.Compared with traditional methods, ERAS had better outcomes with shorter time to the passage of flatus (WMD=-26.557 hours, 95%CI:-34.097～-19.018, P < 0.05), shorter time to the passage of defecation (WMD=-34.071 hours, 95%CI:-53.449～-14.693, P < 0.05), shorter postoperative hospital stay (WMD=-2.824 days, 95%CI:-3.638～-2.010, P < 0.05), less medical cost (WMD=-0.342 ten thousand yuan, 95%CI:-0.501～-0.184, P < 0.05), and lower postoperative complication rate (RR=0.597, 95%CI: 0.435-0.820, P < 0.05).Especially, ERAS had a significant lower rate of postoperative digestive tract complications (RR=0.492, 95%CI: 0.350-0.693, P < 0.05).However, there were no significant differences between two methods in the incidence of complications including postoperative pulmonary infection, infection or liquefaction of incision, fistula of anastomosis, and postoperative readmission rate (P > 0.05). ConclusionsThe application of ERAS in the perioperated period of radical gastrectomy surgery shortens the time to passage of first flatus and first defecation, the postoperative hospital stay, as well as lowers the medical cost, and the postoperative complication rate.The results suggest that ERAS is safe and effective in perioperated period of radical gastrectomy and it is very promising in clinical application.
ObjectiveTo review the current research status of in situ three-dimensional (3-D) printing technique and future trends. MethodsRecent related literature about in situ 3-D printing technique was summarized, reviewed, and analyzed. ResultsBased on the cl inical need for surgical repair, in situ 3-D printing technique is in the preliminary study, mainly focuses on in situ dermal repair and bone and cartilage repair, and succeeds in experiments, but there are still a lot of problems for cl inical application. ConclusionWith the development of in situ 3-D printing technique, it will provide patients with real-time and in situ digital design and 3-D printing treatment with a timely and minimally invasive surgical repair process. It will be widely used in the future.
ObjectiveTo explore the effectiveness of excision and reconstruction of bone tumor by using operation guide plate made by variety of three-dimensional (3-D) printing techniques, and to compare the advantages and disadvantages of different 3-D printing techniques in the manufacture and application of operation guide plate. MethodsBetween September 2012 and January 2014, 31 patients with bone tumor underwent excision and reconstruction of bone tumor by using operation guide plate. There were 19 males and 12 females, aged 6-67 years (median, 23 years). The disease duration ranged from 15 days to 12 months (median, 2 months). There were 13 cases of malignant tumor and 18 cases of benign tumor. The tumor located in the femur (9 cases), the spine (7 cases), the tibia (6 cases), the pelvis (5 cases), the humerus (3 cases), and the fibula (1 case). Four kinds of 3-D printing technique were used in processing operation guide plate:fused deposition modeling (FDM) in 9 cases, stereo lithography appearance (SLA) in 14 cases, 3-D printing technique in 5 cases, and selective laser sintering (SLS) in 3 cases; the materials included ABS resin, photosensitive resin, plaster, and aluminum alloy, respectively. Before operation, all patients underwent thin layer CT scanning (0.625 mm) in addition to conventional imaging. The data were collected for tumor resection design, and operation guide plate was designed on the basis of excision plan. Preoperatively, the operation guide plates were made by 3-D printing equipment. After sterilization, the guide plates were used for excision and reconstruction of bone tumor. The time of plates processing cycle was recorded to analyse the efficiency of 4 kinds of 3-D printing techniques. The time for design and operation and intraoperative fluoroscopy frequency were recorded. Twenty-eight patients underwent similar operations during the same period as the control group. ResultsThe processing time of operation guide plate was (19.3±6.5) hours in FDM, (5.2±1.3) hours in SLA, (8.6±1.9) hours in 3-D printing technique, and (51.7±12.9) hours in SLS. The preoperative design and operation guide plate were successfully made, which was used for excision and reconstruction of bone tumor in 31 cases. Except 3 failures (operation guide plate fracture), the resection and reconstruction operations followed the preoperative design in the other 28 cases. The patients had longer design time, shorter operation time, and less fluoroscopy frequency than the patients of the control group, showing significant differences (P<0.05). The follow-up time was 1-12 months (mean, 3.7 months). Postoperative X-ray and CT showed complete tumor resection and stable reconstruction. Conclusion3-D printing operation guide plates are well adapted to the requirements of individual operation for bone tumor resection and reconstruction. The 4 kinds of 3-D printing techniques have their own advantages and should be chosen according to the need of operation.
ObjectiveTo summarize the latest research development of the application of digital design and three-dimensional (3-D) printing technique on individualized medical treatment. MethodsRecent research data and clinical literature about the application of digital design and 3-D printing technique on individualized medical treatment in Xi'an Jiaotong University and its cooperation unit were summarized, reviewed, and analyzed. ResultsDigital design and 3-D printing technique can design and manufacture individualized implant based on the patient's specific disease conditions. And the implant can satisfy the needs of specific shape and function of the patient, reducing dependence on the level of experience required for the doctor. So 3-D printing technique get more and more recognition of the surgeon on the individualized repair of human tissue. Xi'an Jiaotong University is the first unit to develop the commercial 3-D printer and conduct depth research on the design and manufacture of individualized medical implant. And complete technological processes and quality standards of product have been developed. ConclusionThe individualized medical implant manufactured by 3-D printing technique can not only achieve personalized match but also meet the functional requirements and aesthetic requirements of patients. In addition, the individualized medical implant has the advantages of accurate positioning, stable connection, and high strength. So 3-D printing technique has broad prospects in the manufacture and application of individualized implant.