Objective To compare the feasibility and safety of video-assisted thoracoscopic surgery (VATS) under non-intubated, intravenous anesthesia with spontaneous ventilation. Methods A total of 80 patients undergoing VATS (48 wedge resections, 8 sympathectomies, 24 pleural biopsies) between January 2015 and June 2017 were included. Those patients were randomized into two groups. The 40 patients were enrolled as a treatment group (19 males and 21 females at age of 23.3±10.2 years) and received surgery under non-intubated intravenous anesthesia with spontaneous ventilation. And the other 40 patients were enrolled as a control group (21 males and 19 females at age of 22.2±9.9 years) and received surgery under routine intravenous anesthesia with intubated ventilation. Results Comparing with the control group, the patients of the treatment group had lower white blood cell count (5.8×109±2.4×109 vs. 7.3×109±3.6×109, P<0.001), lower gastrointestinal adverse reaction rate (7.5%vs. 27.5%, P=0.002), lower sore throat rate (5.0% vs. 30.0%, P<0.001), lower cough grade (0.9±0.3vs 2.1±0.5, P<0.050), shorter drainage time (1.8±1.6 dvs. 3.7±1.8 d, P<0.050) and shorter hospital stay (2.3±1.8 dvs. 5.8±2.3 d, P<0.050). Conclusion Video-assisted thoracoscopic surgery under non-intubated, intravenous anesthesia with spontaneous ventilation is safe and feasible, which also has certain advantages in reducing the postoperative complications and promoting patients' quick recovery from surgery.
Objective To study digitize design of custom-made radial head prosthesis and to verify its matching precision by the surgery of preoperative three-dimensional (3-D) virtual replacement. Methods Six healthy adult volunteers (3 males and 3 females, aged 25-55 years with an average of 33 years) received slice scan of bilateral elbow by Speed Light 16-slice spiral CT. The CT Dicom data were imported into Mimics 10.0 software individually for 3-D reconstruction image, and the left proximal radial 3-D image was extracted, the mirror of the image was generated and it was split into 2 pieces: the head and the neck. The internal diameter and the length of the radial neck were obtained by Mimics 10.0 software measurement tools. In Geomagic Studio 12 software, the radial head was simulated to cover the cartilage surface (1 mm thickness) and generated to an entity. In UG NX 8.0 software, the stem of prosthesis was designed according to the parameters above and assembled head entity. Each custom-made prosthesis was performed and verified its matching precision by the surgery of preoperative 3-D virtual replacement. Results Comparing the morphology of 6 digitize custom-made prostheses with ipsilateral radial heads by the 3-D virtual surgery, the error was less than 1 mm. The radial head prosthesis design on basis of the contralateral anatomy was verified excellent matching. Conclusion The 3-D virtual surgery test and the digitized custom-made radial head prosthesis will be available for clinical accurate replacement.
Objective To explore the risk factors and treatment associated with postoperative hemorrhage after pancreaticoduodenectomy. Methods The clinical data of 78 patients undergoing pancreatieoduodeneetomy from May 2009 to October 2011 were retrospectively analyzed in Xinhua Hospital, Shanghai Jiao Tong University School of Medicine. Results The incidence of postoperative hemorrhage was 10.3％ （8/78）. Among these eight patients, intra-abdominal hemorrhage occurred in two cases （one case of early and delayed hemorrhage respectively）, and gastrointestinal hemorrhage occurred in 6 cases （one and five cases of early and delayed hemorrhage respectively）. Univarlate analysis showed that operative blood loss, postoperative celiac infection, pancreatic fistula, and pancreaticogastrostomy were significantly associated with postoperative hemorrhage. Multivariate analysis identified for vailables as independent factors associated with postoperative hemorrhage, namely, pancreaticogastrostomy, postoperative celiac infection, and pancreatic fistula. Conclusions Skillful operation, prevention of pancreatic fistula, and control celiac infection are important for reducing postoperative hemorrhage. Proper treatments should be used according to the site, onset, and severity of hemorrhage. To prevent its occurrence is the key of treatment.