Objective To explore the clinical features of subcutaneous fluid collection and post-operative headache after craniotomy and assess the efficacy and side effects of the millimeter wave treatment.MethodsA total of 32 neurosurgical patients with post-operative subcutaneous fluid collection were involved in this study and divided into traditional and millimeter wave treatment groups randomly. Subcutaneous fluid volume after 3 days, time for complete fluid absorption, time of hospital stay, incidence of related infections and severe headache between two groups were assessed.ResultsThe fluid reduction is 93.8% in the millimeter wave treatment group and 76.5% in the traditional treatment group 3 days after treatment (P<0.05); time for complete fluid absorption was also shorter in the millimeter wave treatment group; there is no infection in the millimeter wave treatment group and 3 cases in the traditional treatment group, millimeter wave treatment also reduced the occurrence of severe post-operative headache; there is no treatment-related side-effects in the millimeter treatment group.ConclusionMillimeter wave treatment is an efficacious and safe method for subcutaneous fluid collection after craniotomy, and can reduce the occurrences of related infections and post-operative pain.

Objective To observe the biomechanieal properties of tendons repaired by five suture techniques in different stage of healing process.Methods After establishing the zone Ⅱ FDP transection model in 2nd,3rd,4th too of both feet in female fowls,the ruptured tendons were repaired with Modified Kessler ( M K ),Kessler plus running ( K +R ),double-strand Kessler ( DK ),double loop (DT) and modified double loop (MT) methods,respectively.Passive and active mobilizations were applied on the 3rd day and 21st day postoperatively.Animals were executed postoperatively,on the 14th,21st and 35th days,respectively and both feet were harvested for biomechanical test.Results Anatomical findings included: The breakage incidence of K+R group was smaller than that of MK group.The excellent and good results of K+R and DK groups were higher compared with that of MK group.Biomechanical results showed: The MK group had the poorest biomechanical results in every stage of tendon healing (P＜0.05) except that the results from MK group on the 35th showed no statistical difference compared with that of MT and DT in extreme load;K+R group exbited the greatest extreme load and tensile strength (P＜0.05);Biomechanical test results from all groups showed significant differences on different testing point: 35th day＞21st day＞14th day(P＜0.05 );No significant differences were found in all groups between the immediate postoperative results onlst day and that from 14th day.ConclusionDuring the recovery of tendon,biomechanical properties returned to the immediate postoperative level on the 14th day and increased along with time.K+R group shows the superiority to the other methods in biomechanical properties as well as low breaking incidence ratein every stage of tendon healing.Kessler plus running is an effective method with high strength against breakage and great resistance to adhesion formation.

Objective To compare the biomechanical effect of several commonly used internal fixators in treating the femoral neck fractures so as to provide clinical basis for the selection of ideal internal fixation.Methods Twelve artificial PMMA femoral models were selected,and the central neck of the specimens was sawn with an electric saw at Pauwels angle of 70° to form adduction type femoral neck fracture models.After anatomic reduction,the specimens were fixed with dynamic hip screw ( DHS),three hollow screws,proximal femoral nail (PFN) and dynamic sleeve three-wing screw according to the operative approach,respectively.Instron-8874 servo-hydraulic mechanical testing machine was used to fix the specimens which simulated uniped standing.Fifteen key points on proximal femur were selected as test points and were given gradation loading at speed of 10 mm/min with linear load 0-1 200 N.The strain of each point under 1200 N load,head sink displacement under different loads and the strain of eight points on principal pressure side were measured.Results There was a peak at the eight resistance strain gage at 1200 N load and the strain values of the DHS,three hollow screws,PFN and dynamic sleeve three-wing screw were (700 ±35) μεz,(756 ± 14) με,( 1362 ± 136) με and (3024 ± 127) με,with statistical significance (P ＜ 0.01 ).Under the same load,the head sink displacement in the group of dynamic sleeve three-wing screw was greater than that of the hollow screws group and the PFN group ( P ＜0.01 ),but smaller thau that of the DHS group ( P ＜ 0.01 ).The strain values at the eight resistance strain gage in the group of dynamic sleeve three-wing screw was larger than that of the other three groups under the same load (P ＜ 0.01 ),and the strain values increased with the increase of load at the same fixation group.Conclusion Dynamic sleeve three-wing screw has good biomechanical stability for treatment of femoral neck fracture,which can be applied in the clinical practice.

Objective To assess the gastric contents before cesarean section using antral cross-sectional area (CSA) measured by ultrasonography.Methods One hundred and seventy-seven American Society of Anesthesiologists physical status Ⅰ-Ⅲ patients,aged 20-44 yr,undergoing cesarean section,were enrolled in this study.The antral CSA in the semi-recumbent and right lateral decubitus positions was measured through the ultrasound images of the antrum in the sagittal plane below xiphoid before anesthesia and qualitatively graded.Qualitative grade 0 was considered as the gold standard,and the receiver operating characteristic (ROC) curve of CSA in assessing the preoperative gastric contents was plotted.Results The critical value of ROC curve of CSA in the semi-recumbent position was 6.025 cm2.The critical value of ROC curve of CSA in the right lateral decubitus position was 9.095 cm2.Conclusion CSA ＜ 6.025 cm2 measured by ultrasonography in the semi-recumbent position or CSA＜9.095 cm2 measured by ultrasonography in the right lateral decubitus position can confirm that the gastric emptying state is achieved before cesarean section.

Objective: To explore the effect of working memory intervention training on working memory and literacy of children with developmental dyslexia,so as to provide a preference for practice of the trianing of working memory among children with dyslexia. Methods: A total of 32 children with dyslexia of grade 3-5 in a primary school in Guiyang were randomly divided into two groups: the study group (n=16) and the control group (n=16),and the software of training exercises of working memory was applied to conduct interventional trainings of different durations to 2 gruops of children. Results: Through the intervention training of working memory, the scores of literacy and working memory tasks in the study group (2 217.88±252.32, 105.13±7.68) were significantly higher than those in the control group (1 907.69 ± 545.15, 96.50 ± 11.04) (t=2.06, 2.56, P<0.05). Conclusion The working memory ability of children with dyslexia can be improved by working memory intervention training for a certain period of time. The intervention effect is not only significant in the trained working memory task, but also can be extended to other untrained contents such as literacy.

Objective:To analysis the effect of health-promoting lifestyle and patient activation on self-management among tumor patients with PICC of the intermission of chemotherapy, so as to provide a basis for the targeted caring intervention programs.Methods:Using cross-sectional survey methods, from January 2021 to December 2022, the tumor patients with PICC of the intermission of chemotherapy of Tianjin Third Central Hosptial were investigated, using the General Demographic Questionnaire, Cancer Patients PICC Self-management Scale, Health Promotion Lifestyle Profile Ⅱ and Patient Activation Measure. Pearson correlation analysis and multiple linear stepwise regression analysis were used to analyze the data, and the structural equation model between related factors were established.Results:A total of 251 patients were collected in the this study, the scores of self-management were (153.12 ± 20.33) points, health-promoting lifestyle were (98.58 ± 16.05) points, and patient activation were (50.52 ± 6.51) points. The dimensions scores and total scores of self-management were positively correlated with the health-promoting lifestyle and patient activation in tumor patients with PICC ( r values were 0.503-0.910, all P<0.01). Multiple linear regression analysis showed that the health-promoting lifestyle and the patient activation were the influencing factors of the patient's self-management ability ( t=2.67, 1365, both P<0.05). Pathway analysis results showed that patient activation played a partially mediating role between health-promoting lifestyle and self-management, the effect value was 0.33 (95% CI 0.301-0.557), accounting for 46.5% of the total effect. Conclusions:Health-promoting lifestyle and the patient activation were the influencing factors of the self-management ability of tumor patients with PICC, patient activation played a partially mediating role between health-promoting lifestyle and self-management.