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find Author "TIAN Wei" 12 results
  • COMPARISON OF CANNULATED SCREWS FIXATION WITH DIFFERENT REDUCTION METHODS AT DIFFERENT TIME POINTS FOR DISPLACED FEMORAL NECK FRACTURES IN TERMS OF FRACTURE HEALING

    Objective To compare the therapeutic effect of cannulated screws fixation at different time points through different reduction methods on the heal ing of displaced femoral neck fractures. Methods From January 1997 to September 2007, 240 patients with displaced femoral neck fracture were treated, including 121 males and 119 females aged 22-79 years old (average 56 years old). All cases were fresh and close fractures. According to the fractured part, there were 133cases of subcapital fracture, 64 of transcervical fracture and 43 of basal fracture. According to Garden classification, there were 105 cases of type III and 135 of type IV. Cannulated screws fixation was performed on all the patients, and the time from injury to operation was 6 hours to 7 days. Fifty-five cases received closed reduction and 59 cases received l imited open reduction as emergency treatment, while 65 cases received closed reduction and 61 cases received l imited open reduction as selective operation. Different groups were compared in terms of the heal ing rate of fracture, the excellent and good rate of reduction as well as the excellent and good rate of fixation. Results There was no significant difference between the closed reduction and the l imited open reduction in terms of operation time and bleeding volume (P gt; 0.05). Postoperatively, all wounds healed by first intention, no infection was observed, avascular necrosis of femoral head occurred in 44 cases, and the rate of avascular necrosis of femoral head in the l imited open reduction at emergency group was less than that of other 3 groups (P lt; 0.01). All the patients were followed up for 12-72 months (average 38 months), 193 cases got fracture heal ing at 10-23 months after operation (average 14 months). For the closed reduction as emergency operation group, the l imited open reduction as emergency operation group, the closed reduction as selective operation group, and the l imited open reduction as selective operation group, the heal ing rate of fracture was 74.55%, 91.53%, 69.23% and 86.89%, respectively; the excellent and good rate of reduction was 73.73%, 94.92%,70.77% and 91.80%, respectively; the excellent and good rate of fixation was 76.36%, 93.22%, 73.85% and 88.52%, respectively. The heal ing rate of fracture, the excellent and good rate of reduction as well as the excellent and good rate of fixation in the l imited open groups were higher than that of the closed reduction groups (Plt; 0.01), and there was no significant difference between the emergency operation groups and the selective operational groups (Pgt; 0.05). Conclusion The reduction methods have significant influences on the heal ing of fractures after cannulated screws fixation of the displaced femoral neck fracture, and the operation time has no obvious effect on fracture heal ing.

    Release date:2016-09-01 09:05 Export PDF Favorites Scan
  • Non-leaching, broad-spectrum antibacterial poly (ε-caprolactone)/gelatin-QAS nanofiberous membranes for wound dressing

    5–20 wt% trimethoxysilylpropyl octadecyldimethyl ammonium chloride (QAS) was used to modify Poly (ε-caprolactone) (PCL)-gelatin hybrid to fabricate non-leaching antibacterial nanofiber membranes (PG-Q) by electrospinning. The results from scanning electron microscopy (SEM) and transmission electron microscopy (TEM) indicated that the QAS leaded to phase separation between the QAS and PCL. Hydrophilic test demonstrated that the PG-Q nanofiber membranes had hydrophobic surface, which was help for peeling off the dressing from the wound. Additionally, the physical and chemical cross-linking between the QAS/PCL and QAS/gelatin were confirmed by Fourier transform infrared (FTIR), which were good for long lasting antibacterial effect. The PG-Q membranes also showed excellent cell-biocompatibility. Furthermore, compared with pure PCL nanofiber membrane, the PG-Q nanofiber membranes, especially PG-Q15 (QAS: 15 wt%) and PG-Q20 (QAS: 20 wt%), showed a considerable increase in the bacteriostatic rate of S. aureus and P. aeruginosa (more than 99% after 12 h). Therefore, electrospinning non-leaching antibacterial nanofiber membranes could be an optimal choice for antibacterial wound dressing.

    Release date:2018-08-23 03:47 Export PDF Favorites Scan
  • Evaluation of the operation status of clinical departments in a hospital by using comprehensive evaluation model

    ObjectiveTo evaluate the operation status of the clinical departments of a hospital through the establishment of the evaluation index system and comprehensive evaluation model.MethodsThe data on workload, service difficulty, service efficiency, health economics and other related indicators of the clinical departments of a hospital from January to June 2018 were collected. The comprehensive evaluation model was constructed by comprehensive scoring method. The data of each index were centralized, then the comprehensive evaluation model of clinical departments was established and the scores were calculated by weighted summation. Microsoft Excel 2010 and SPSS 17.0 software were used for data processing.ResultsThere were certain differences in comprehensive scores and detailed indicators among different clinical departments. Ranked by comprehensive scores, the top three surgical departments were Department of Thoracic Surgery (1.45), Department of Breast Surgery (1.32), and Department of Vascular Surgery (1.22), and the top three internal departments were Department of Oncology (5.76), Department of Cardiology (3.47), and Department of Hematology (3.41).ConclusionsIn general, there are some differences in the operating conditions among different departments. There are also differences in the detailed indicators among different departments. The results can be used to find out problems and gaps, and finally improve the operation of the departments.

    Release date:2020-02-03 02:30 Export PDF Favorites Scan
  • Impact of diagnosis-related group / diagnosis-intervention packet medical insurance payment method reform on hospitals and the improving strategies of hospitals

    Judging from the latest policies related to the medical insurance payment reform of the state and Sichuan province, the reform of medical insurance diagnosis-related group (DRG)/diagnosis-intervention packet (DIP) payment methods is imperative. The impact of DRG/DIP payment method reform on public hospitals is mainly analyzed from the aspects of hospital cost accounting and control, quality of filling in the first page of medical cases, coding accuracy, standard of medical practice, development of diagnosis and treatment technology innovation business, multi-departmental linkage mechanism, competition between hospitals, performance appraisal mechanism, and negotiation and communication mechanism. We should put forward hospital improvement strategies from the top-level design of the whole hospital and from the aspects of improving the quality of the first page of the cases and the quality of the coding, strengthening the cost accounting and control of the disease, carrying out in-hospital and out-of-hospital training, establishing a liaison model, finding gaps with benchmark hospitals, enhancing the core competitiveness of innovative technologies, and improving internal performance appraisal, etc., to promote the high-quality development of hospitals.

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  • Association between anesthesia regimen and postoperative infection in patients undergoing cardiac surgery: A retrospective cohort study

    Objective To evaluate the association between anesthesia regimen (volatile or intravenous anesthetics) and postoperative infection in adult cardiac patients undergoing cardiac surgery. MethodsThe clinical data of 496 elective adults undergoing cardiac surgery under cardiopulmonary bypass from June 2019 to June 2020 in West China Hospital of Sichuan University were retrospectively analyzed, including 251 females and 245 males with an average age of 54.1±11.4 years. American Society of Anesthesiologists grade was Ⅰ-Ⅲ. There were 243 patients in a volatile group with sevoflurane or desflurane, and 253 patients in an intravenous anesthesia group with propofol. The primary outcome was the incidence of infection within 30 days after cardiac surgery, including pulmonary infection, surgical site infection, sepsis, and urinary tract infection. The secondary outcomes were duration of mechanical ventilation, incidence of reintubation, ICU stay, postoperative length of hospital stay and total hospitalization cost. Results A total of 155 (31.3%) patients developed postoperative infection within 30 days, with an incidence of 32.9% in the volatile group and 29.6% in the intravenous anesthesia group. There was no statistical difference in the incidence of infection (RR=1.111, 95%CI 0.855 to 1.442, P=0.431) or the secondary outcomes (P>0.05) between the two groups. Conclusion The anesthesia regimen (volatile or intravenous anesthetics) has no association with the risk of occurrence of postoperative infection in adult patients undergoing elective cardiac surgery with cardiopulmonary bypass.

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  • Influence of intraoperative fluid volume on pulmonary complications in patients undergoing minimally invasive endoscopic esophagectomy

    Objective To evaluate the effect of intraoperative fluid infusion volume on postoperative pulmonary complications (PPCs) in patients after minimally invasive endoscopic esophageal carcinoma resection. Methods From June 2019 to August 2021, 486 patients undergoing elective minimally invasive endoscopic esophagectomy for esophageal cancer were retrospectively screened from the electronic medical record information management system and anesthesia surgery clinical information system of West China Hospital of Sichuan University. There were 381 males and 105 females, with a median age of 64.0 years. Taking the incidence of pulmonary complications within 7 days after operation as the primary outcome, the correlation between intraoperative fluid infusion volume and the occurrence of PPCs within 7 days was clearly analyzed by regression analysis. ResultsThe incidence of pulmonary complications within 7 days after surgery was 33.5% (163/486). Regression analysis showed that intraoperative fluid infusion volume was correlated with the occurrence of PPCs [adjusted OR=1.089, 95%CI (1.012, 1.172), P=0.023], especially pulmonary infection [adjusted OR=1.093, 95%CI (1.014, 1.178), P=0.020], and pleural effusion [adjusted OR=1.147, 95%CI (1.007, 1.306), P=0.039]. Pulmonary infection was significantly less in the low intraoperative fluid infusion group [<6.49 mL/(kg·h), n=115] compared with the high intraoperative fluid infusion group [≥6.49 mL/(kg·h), n=371] (18.3% vs. 34.5%, P=0.023). Intraoperative fluid infusion volume was positively associated with death within 30 days after surgery [adjusted OR=1.442, 95%CI (1.056, 1.968), P=0.021]. Conclusion Among patients undergoing elective minimally invasive endoscopic esophageal cancer resection, intraoperative fluid infusion volume is related with the occurrence of PPCs within 7 days after the surgery, especially pulmonary infection and pleural effusion, and may affect death within 30 days after the surgery.

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  • Outcome of thoracoscopic lobectomy for stageⅠ/Ⅱnon-small cell lung cancer

    Objective To evaluate the efficacy and safety of total thoracoscopic lobectomy for patients with stage Ⅰ/Ⅱ non-small cell lung cancer (NSCLC). Methods The clinical data of 138 NSCLC patients from January 2013 to June 2015 in Shaanxi People's Hospital were retrospectively analyzed. There were 88 males and 50 females with an average age of 57.4±8.8 years, ranging from 44 to 76 years. According to the operation methods, they were divided into a video-assisted thoracoscopic surgery (VATS) group (thoracoscopic lobectomy in 63 cases) and a thoracotomy group (conventional open chest surgery in 75 cases). The intra- and postoperative clinical data, surgical complications and pulmonary function were compared. Results There was no significant difference in the operation time, intraoperative lymph node dissection groups, intraoperative lymph node dissection number between two groups (P>0.05). The blood loss, postoperative drainage volume, duration of postoperative analgesia, Numeric Rating Scale for pain and hospital stay in the VATS group were significantly lower than those of the thoracotomy group (P<0.05). The pre- and postoperative FVC%pred and FEV1%pred in both groups were compared and there was no significant difference (P>0.05). However the postoperative FVC%pred and FEV1%pred in both groups significantly reduced compared with preoperative ones (P<0.05). Complication rate of thoracoscopic group was significantly less than that of the thoracotomy group (20.63%vs. 32.00%,χ2=3.974,P=0.046). Conclusion Thoracoscopic lobectomy for NSCLCⅠ/Ⅱpatients is reliable, and achieves rapid postoperative recovery as well as less complications.

    Release date:2017-03-24 03:45 Export PDF Favorites Scan
  • Docetaxel injection and Capecitabine tablets combined with Oxaliplatin injection in postoperative chemotherapy for esophageal cancer

    Objective To investigate the efficacy of Docetaxel injection and Capecitabine tablets combined with Oxaliplatin injection in chemotherapy for patients after esophageal cancer surgery. Methods We retrospectively analyzed the clinical data of 101 patients with esophageal cancer who underwent radical surgery from June 2010 to December 2012, including 58 males and 43 females. According to the different treatment methods they were divided into a study group (58 patients, 32 males and 26 females, postoperatively receiving Docetaxel injection, Capecitabine tablets, Oxaliplatin injection and chemotherapy) and a control group (43 patients, 26 males and 17 females, taking Docetaxel injection and Capecitabine tablets for 4 consecutive courses). We compared the difference in the outcomes between the two groups. Results There was no significant difference in the level of serum anticancer antigen (CEA), carbohydrate antigen 125 (CA125), carbohydrate antigen 199 (CA199) and squamous cell carcinoma antigen (SCC) before chemotherapy between two groups (P>0.05). After chemotherapy, the level of serum CEA, CA125, CA199, SCC in the study group was significantly lower than that in the control group (P<0.05). The 1-year survival rate of the study group was 92.59% and the 2-year survival rate was 70.37%, which were not significantly different from those of the control group (P>0.05). The 3-year survival rate of the study group was significantly higher than that of the control group (57.41 %vs. 32.43%, P<0.05). The mean survival time of the study group was longer than that of the control group (31 monthsvs. 22 months, P=0.001). Conclusion Docetaxel injection and Capecitabine tablets combined with Oxaliplatin injection for the treatment of esophageal cancer surgery can significantly reduce levels of tumor markers in serum after esophageal cancer surgery, and is favorable for the long-term survival of patients, but adverse reactions should be noted.

    Release date:2017-11-01 01:56 Export PDF Favorites Scan
  • Long-term clinical efficacy of cervical artificial disc replacement for cervical spondylotic radiculopathy

    ObjectiveTo evaluate the long-term efficacy and influencing factors of cervical artificial disc replacement (CADR) for patients with cervical spondylotic radiculopathy (CSR).MethodsThe data of 29 CSR patients who underwent Bryan artificial disc replacement between December 2003 and December 2007 and followed up more than 10 years were retrospectively analysed. There were 16 males and 13 females with an average age of 54.1 years (range, 40-70 years). The disease duration was 2-144 months (mean, 19.2 months). CT and MRI were performed before operation to identify the compression segments (C3, 4 in 2 cases, C4, 5 in 6 cases, C5, 6 in 18 cases, C6, 7 in 3 cases) and the compression factors. According to the compression factor, the patients were divided into 2 groups: 14 patients with cervical disc herniation were in the group A and 15 patients combined with osteophyte were in the group B. There was no significant difference in gender, age, disease duration, and compressed level between 2 groups (P>0.05). The radiographic and clinical evaluation indexes were recorded before operation and at last follow-up. The radiographic evaluation indexes included the global cervical and segmental range of motion (ROM), loss of ROM (ROM<3°) at last follow-up, Cobb angle and incidence of local kyphosis, paravertebral ossification (PO) grading. The clinical evaluation indexes included neck disability index (NDI) and overall efficacy (Odom’s score).ResultsAll patients were followed up 121-153 months (mean, 130 months). The results of radiographic evaluation indexes showed that within group comparison, except that the Cobb angle of the operated level was significantly decreased (P<0.05) in both 2 groups, there was no significant difference in global cervical ROM and segmental ROM between preoperation and last follow-up (P>0.05). Except that the loss of ROM (ROM<3°) at last follow-up and high-grade PO at last follow-up in group B were significantly higher than those in group A (P<0.05), there was no significant difference in other radiographic evaluation indexes between 2 groups (P>0.05). The results of clinical evaluation indexes showed that the NDI was significantly improved in both groups (P<0.05) at last follow-up. There was no significant difference in the NDI at preoperation and at last follow-up, the decline of NDI at last follow-up, and the overall efficacy evaluated by Odom’s score between 2 groups (P>0.05). The excellent and good rate of overall efficacy reached 100% in both groups.ConclusionCADR has satisfied long-term efficacy in treating CSR. The maintenance of segmental mobility was better in patients with disc herniation than in patients with disc herniation and osteophyte.

    Release date:2018-05-30 04:28 Export PDF Favorites Scan
  • Effect of ventilation mode on pulmonary complications after thoracoscopic lung resection: A retrospective cohort study

    Objective To evaluate the association between pressure-controlled ventilation-volume guaranteed (PCV-VG) mode and volume-controlled ventilation (VCV) mode on postoperative pulmonary complications (PPCs) in patients undergoing thoracoscopic lung resection. Methods A retrospective cohort analysis of 329 patients undergoing elective thoracoscopic lung resection in West China Hospital of Sichuan University between September 2020 and March 2021 was conducted, including 213 females and 116 males, aged 53.6±11.3 years. American Society of Anesthesiologists (ASA) grade wasⅠ-Ⅲ. The patients who received lung-protective ventilation strategy during anesthesia were divided into a PCV-VG group (n=165) and a VCV group (n=164) according to intraoperative ventilation mode. Primary outcome was the incidence of PPCs during hospitalization. Results A total of 73 (22.2%) patients developed PPCs during hospitalization. The PPCs incidence of PCV-VG and VCV was 21.8% and 22.6%, respectively (RR=0.985, 95%CI 0.569-1.611, P=0.871). Multivariate logistic regression analysis showed that there was no statistical difference in the incidence of PPCs between PCV-VG and VCV mode during hospitalization (OR=0.846, 95%CI 0.487-1.470, P=0.553). Conclusion Among patients undergoing thoracoscopic lung resection, intraoperative ventilation mode (PCV-VG or VCV) is not associated with the risk of PPCs during hospitalization.

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