AIM To establish LC-MS and GC-MS method and analyze the chemical constituents of Dendrobium huoshanense C.Z.Tang & S.J.Cheng flowers.METHODS LC-MS was performed on a Zorbax Eclipse C18 column(2.1 mm×100 mm,1.8 μm),with the mobile phase comprising of water(containing 0.1％formic acid)-acetonitrile flowing at 0.3 mL/min,and electrospray ionization was operated in both positive and negative ion modes.The GC-MS employed headspace solid-phase microextraction for sample preparation,and the analysis was performed on an HP-5MS column(30 m×0.25 mm,0.25 μm),with the following temperature program:initial temperature 50 ℃(held for 2 min),increased at 5 ℃/min to 180 ℃(held for 5 min),then raised at 10 ℃/min to 250 ℃(held for 5 min),and electron impact ion source was employed.RESULTS A total of 62 compounds were identified by LC-MS,including 35 flavonoids,4 coumarins,6 alkaloids,6 terpenoids,3 amino acids,2 polyphenols,2 ketones and 4 others.A total of 101 volatile components were identified by GC-MS,including ketones,aldehydes,alcohols,esters,ethers,and acid.CONCLUSION This method can comprehensively analyze the chemical constituents of D.huoshanense flowers,and provide a scientific basis for elucidating its pharmacodynamic material basis.

Creutzfeldt-Jakob disease(CJD)is a rapidly progressive and fatal neurodegenerative disorder caused by prions,with certain infectivity and iatrogenic transmission risks.With the rapid progress and application of new dia-gnostic biomarkers and detection methods,as well as the construction and improvement of surveillance and reporting systems,the detection of CJD in patients domestically and internationally has shown an increasing trend year by year.Due to its long incubation period and heterogeneity of early symptoms,early identification and diagnosis of the disease is difficult,increasing the risk of transmission within medical institutions.Currently,there is a lack of con-sensus on the infection prevention and control of CJD.In order to timely identify and diagnose CJD as well as effec-tively block its transmission in medical institutions,this consensus summarizes 15 clinical concerns and formulates 24 specific recommendations based on the latest domestic and international research findings and clinical evidence,as well as combines with clinical practice,aiming to standardize healthcare-associated infection prevention and control measures for CJD and reduce its transmission risk in medical institutions.

Objective:To share our experience of single-port transoral Da Vinci robotic surgery for laryngeal and pharyngeal benign tumors.Methods:Three patients aged over 18 years and diagnosed respectively with epiglottic cyst, aryepiglottic fold cyst and thyroglossal duct cyst at tongue base were included who received operations in Hainan Hospital of Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine (Boao Research Hospital of Hainan) between August 1, 2023 and April 10, 2024. There were 1 male and 2 females, with an average age of 59 years old. The clinical diagnosis of these 3 patients was respectively epiglottic cyst, aryepiglottic fold cyst and thyroglossal duct cyst at tongue base. Intraoperative conversion rate, blood loss, operation time, hospital stay, pain score and swallowing function score were analyzed.Results:All three patients successfully underwent the operations with the single-port Da Vinci robotic system. The clean-contaminated resection rate of the tumors was 100%. The conversion rate was nil. The blood loss was 0-7 ml. The operation time was 5-30 minutes. There were no adverse events such as loosening of teeth and soft tissue abrasions of pharyngeal side wall. The rate of oral feeding within 24 hours after surgery was 100%. No postoperative coughing, bleeding, or dyspnea occurred. The average length of hospital stay was 3.7 days. The VAS score decreased 3 days after surgery compared to 1 day after surgery. The swallowing function recovered 1 month after surgery.Conclusion:The single-port transoral robotic surgery for laryngeal and pharyngeal benign lesions is safe and efficient, with fewer complications.

Objective:To analyze the short-and medium-term clinical outcomes of Mako robotic-assisted posterior-lateral approach in complex primary total hip arthroplasty (THA).Methods:A retrospective case series analysis was conducted on 29 patients with complex hip conditions who underwent Mako robotic-assisted posterior-lateral approach at Department of Orthopaedics, the Second Affiliated Hospital of Zhejiang University School of Medicine from November 2020 to December 2024. The patient cohort included 14 cases of developmental dysplasia of the hip, 8 cases of ankylosed hip, 3 cases of traumatic hip arthritis, 3 cases of sequelae of purulent hip arthritis, and 1 case of synovial chondromatosis. There were 12 males and 17 females, with an age of (62.3±9.4) years (range:44 to 79 years). Surgical time, intraoperative blood loss, vascular and nerve injury, postoperative infection, and other complications were recorded. Preoperative and postoperative lower limb length discrepancy, combined offset difference (ΔCO), acetabular abduction angle, and acetabular anteversion angle were measured. The Harris hip score was recorded at regular follow-ups. Data comparison was conducted using the paired sample t-test. Results:All patients successfully underwent surgery with the Mako robotic system. The surgical time was (107.6±41.5) minutes (range:50 to 235 minutes), and the intraoperative blood loss was (165.5±147.7) ml (range:50 to 800 ml). All patients were followed up for a duration of (27.3±16.7) months (range:3 to 51 months). The planned intraoperative acetabular cup abduction angle was 40.1°±1.6° (range: 36° to 45°), and the measured postoperative acetabular cup abduction angle was 40.2°±3.5° (range: 33° to 54°), with no significant difference ( t=0.231, P=0.819). The planned intraoperative acetabular cup anteversion angle was 19.1°±3.9° (range: 15° to 25°), and the measured postoperative acetabular cup anteversion angle was 18.5°±3.4° (range: 10° to 26°), with no significant difference ( t=1.792, P=0.084). The difference in length of both lower limbs was (-17.6±15.0) mm (range:-50 to 10 mm) before operation and (-1.5±16.0) mm (range:-33 to 53 mm) after operation ( t=6.282, P<0.01)(positive values indicate that the surgical side is longer than the contralateral side). The ΔCO was (4.1±12.0) mm (range:-18 to 30 mm) before operation and (-2.2±13.3) mm (range:-44 to 17 mm) after operation, with statistically significant difference ( t=2.635, P=0.014). One patient experienced vascular injury with embolism postoperatively, while no other complications were observed in the remaining patients. No loosening, dislocation, or fracture of the prosthesis was noted during the follow-up period. The Harris function score was improved from (47.1±8.3) points(range:15 to 62 points) preoperatively to (73.0±5.5) points(range:57 to 83 points) at the three-month postoperative follow-up ( t=22.630, P<0.01). Conclusion:The use of Mako robotic assistance in complex total hip arthroplasty can enhance the accuracy of prosthesis placement, minimize lower limb length discrepancy, and improve hip joint function.

Body weight abnormalities, including overweight, obesity, and underweight, have become a dual public health challenge in Chinese adults: overweight and obesity lead to a variety of chronic complications, while underweight increases the risks of malnutrition, sarcopenia, and organ dysfunction. To systematically address these issues, multidisciplinary experts in endocrinology, sports science, nutrition, and psychiatry from various regions have held multiple weight management seminars. Based on the latest epidemiological data and clinical evidence, they expanded the guideline to include assessment and intervention strategies for underweight, in addition to the core content of obesity management. This guideline outlines the etiological mechanisms, evaluation methods, and multidimensional management strategies for overweight and obesity, covering key areas such as diagnosis and assessment, medical nutrition therapy, exercise prescription, pharmacological intervention, and psychological support. It is intended to provide a scientific and standardized approach to weight management across the adult population, aiming to curb the rising prevalence of obesity, mitigate complications associated with abnormal body weight, and improve nutritional status and overall quality of life.

Objective:To analyze the application effects of case-based learning (CBL) + Seminar teaching method based on Toulmin model in the education and teaching of clinical medicine innovation class.Methods:A total of 60 students from the clinical medicine innovation class at The Second Affiliated Hospital of Guangzhou Medical University from September 2021 to September 2023 were selected as research objects. These students were divided into control group ( n=30) and research group ( n=30) according to different teaching programs. The traditional teaching method was adopted in the control group, and the CBL + Seminar teaching method based on Toulmin model was adopted in the research group. The two groups were compared in terms of clinical knowledge, clinical skill, and clinical case analysis scores; changes in clinical thinking ability after teaching; and satisfaction with the teaching process. SPSS 22.0 was used for t-test and chi-square test. Results:The research group significantly outperformed the control group in clinical knowledge [(89.59±3.46) points vs. (83.23±3.02) points], clinical skill [(88.87±3.23) points vs. (83.62±3.13) points], and clinical case analysis [(89.73±3.51) points vs. (82.62±3.19) points] ( t=7.58, 6.39, 8.21, P<0.001). The clinical thinking ability after teaching was significantly higher in the research group compared to the control group [(258.49±13.36) points vs. (242.56±13.02) points] ( t=4.67, P<0.001). The overall satisfaction rate of teaching was significantly higher in the research group compared to the control group (100.00% vs. 80.00%, χ2=4.63, P=0.031). Conclusions:The CBL + Seminar teaching method based on Toulmin model can effectively improve student learning performance and clinical thinking ability, demonstrating a promising application value in the education and teaching of clinical medicine innovation class.

Objective:To explore the current status of self-disgust in female breast cancer patients and analyze its influencing factors, so as to provide reference for clinical intervention.Methods:Convenience sampling was used to select 283 female breast cancer patients who were hospitalized in Guangdong Provincial Hospital of Chinese Medicine from June to July 2024 for the study. A questionnaire survey was conducted using the General Information Questionnaire, Questionnaire for the Assessment of Self-Disgust (QASD), Family Avoidance of Communication about Cancer Scale, Body Image Scale, and the Chinese version of the Female Self-Advocacy in Cancer Survivorship. Factors influencing patients' self-disgust were analyzed using one-way analysis of variance and multiple linear regression.Results:The total score of QASD in female breast cancer patients was (33.77±7.64). Education level, sexual dysfunction after breast cancer, family avoidance of communication about cancer, body image and self-advocacy were influencing factors of self-disgust in female breast cancer patients ( P<0.05) . Conclusions:Self-disgust of female patients with breast cancer is at a medium to high level. It is recommended that nurses pay attention to the psychological status of patients with low level of education and sexual dysfunction after the disease, implement targeted psychological interventions to improve the family avoidance of communication about cancer and body image, and increase the awareness of self-advocacy, thus reducing the risk of self-disgust in female breast cancer patients.

Objective:To investigate the impact of postoperative complications on adverse outcomes following curative-intent resection for gallbladder cancer (GBC).Methods:The multi-center real-world study was conducted. The clinicopathological data of 629 patients with GBC, who were admitted to 14 medical centers including The First Affiliated Hospital of Army Medical University from the national multicenter database of Biliary Surgery Group of Elite Group of Chinese Journal of Digestive Surgery, from April 2020 to April 2024 were collected. There were 225 males and 404 females, aged (64±10)years. Patients underwent open curative-intent resection for GBC. Observation indicators: (1)surgery, postoperative complica-tions and adverse outcomes; (2) analysis of risk factors affecting postoperative adverse outcomes in patients and population attributable fraction (PAF). Missing data in predictor variables were addressed using multiple imputation with chained equations, while cases with missing outcome variables were addressed using the "multiple imputation then deletion (MID)" strategy. The severity of multicollinearity among independent variables was assessed using the variance inflation factor (VIF) test. Multivariable possion regression models with log link and robust error variance were construc-ted incorporating restricted cubic splines (3 knots) to address nonlinear relationships in continuous variables, calculating adjusted relative risk ( RR) with corresponding 95% confidence interval ( CI). Adjusted PAF was calculated for each imputed dataset using the AF package of R software, with subsequent pooling performed according to Rubin's rules. Results:(1) Surgery, postoperative complications and adverse outcomes. All 629 patients underwent curative-intent resection for GBC, of which 143 cases had postoperative complications, including 68 cases of intra-abdominal ascites, 39 cases of pulmonary infection, 21 cases of bile leakage, 12 cases of intra-abdominal hemorrhage, 11 cases of liver failure, 10 cases of pan-creatic fistula, 10 cases of wound infection, 10 cases of gastroparesis, 7 cases of cholangitis, 7 cases of sepsis. The same patient could have more than one kind of complication. Of 629 patients, there were 19 cases of postoperative 90-day death and 11 cases of missing data, 42 cases with post-operative 90-day reoperation and 7 cases with missing data, 44 cases with postoperative 90-day readmission and 3 cases with missing data, 155 cases with prolonged postoperative hospital stay and 3 cases with missing data. (2) Analysis of risk factors affecting the postoperative adverse outcomes in patients and PAF. Results of multivariate analysis showed that pulmonary infection and liver failure were independent risk factors for postoperative 90-day mortality ( RR=3.74, 12.15, 95% CI as 1.18-11.83, 1.98-74.48, P<0.05). Pulmonary infection demons-trated the highest PAF as 4.61% (95% CI as 3.94%-5.28%, P<0.05). Intra-abdominal ascites, pulmonary infection, bile leakage, and intra-abdominal hemorrhage were independent risk factors for post-operative 90-day reoperation ( RR=4.80, 3.62, 3.46, 4.99, 95% CI as 2.49-9.26, 1.42-9.21, 1.34-8.92, 1.55-16.06, P<0.05). Intra-abdominal ascites demonstrated the highest PAF as 8.65% (95% CI as 8.22%-9.08%, P<0.05). Intra-abdominal ascites, bile leakage, and liver failure were independent risk factors for postoperative 90-day readmission ( RR=6.20, 3.33, 14.33, 95% CI as 3.21-11.95, 1.33-8.35, 3.72-55.28, P<0.05). Intra-abdominal ascites demonstrated the highest PAF as 9.11% (95% CI as 8.85%-9.37%, P<0.05). Intra-abdominal ascites, pulmonary infection, bile leakage, liver failure, and wound infection were independent risk factors for prolonged postoperative hospital stay ( RR=2.29, 2.21, 2.26, 2.14, 3.35, 95% CI as 1.63-3.23, 1.41-3.46, 1.32-3.86, 1.11-4.13, 1.70-6.60, P<0.05). Intra-abdominal ascites demonstrated the highest PAF as 6.03% (95% CI as 5.71%-6.35%, P<0.05). Conclusion:Pulmonary infection is the most significant risk factor for postoperative 90-day mortality after curative-intent resection for GBC, while intra-abdominal ascites is the most significant risk factor for postoperative 90-day reoperation, postoperative 90-day readmission, and prolonged postoperative hospital stay.

Body weight abnormalities, including overweight, obesity, and underweight, have become a dual public health challenge in Chinese adults: overweight and obesity lead to a variety of chronic complications, while underweight increases the risks of malnutrition, sarcopenia, and organ dysfunction. To systematically address these issues, multidisciplinary experts in endocrinology, sports science, nutrition, and psychiatry from various regions have held multiple weight management seminars. Based on the latest epidemiological data and clinical evidence, they expanded the guideline to include assessment and intervention strategies for underweight, in addition to the core content of obesity management. This guideline outlines the etiological mechanisms, evaluation methods, and multidimensional management strategies for overweight and obesity, covering key areas such as diagnosis and assessment, medical nutrition therapy, exercise prescription, pharmacological intervention, and psychological support. It is intended to provide a scientific and standardized approach to weight management across the adult population, aiming to curb the rising prevalence of obesity, mitigate complications associated with abnormal body weight, and improve nutritional status and overall quality of life.

Objective To establish a stable,reliable,and clinically relevant porcine model of endotoxin-induced acute respiratory distress syndrome(ARDS).Methods Ten 8-month-old male Bama minipigs were deeply sedated,followed by invasive mechanical ventilation and electrocardiographic monitoring.Lipopolysaccharide(LPS)was intravenously pumped at 600 μg/(kg·h)for 3 hours,then maintained at 15 μg/(kg·h)thereafter.Dynamic monitoring was performed at five time points after LPS injection(LPS 0,1,3,5,and 8 h),including arterial blood gas analysis and chest computed tomography(CT)scans.Pathological examination of lung tissues obtained via bronchoscopic biopsy(HE staining and transmission electron microscopy)was conducted.These indicators were comprehensively used to evaluate the success of the animal model.Results At 5 hours after LPS administration,8 minipigs developed symptoms such as skin cyanosis,elevated body temperature,and respiratory distress.The oxygenation index decreased to<300 mmHg.Chest CT scans showed diffuse pulmonary infiltrates.Histopathology revealed alveolar edema and hyaline membrane formation.Transmission electron microscopy demonstrated disruption of pulmonary blood-air barrier,depletion of lamellar bodies in type Ⅱ pneumocytes,inflammatory cell infiltration,and exudation of plasma proteins and fibrin.Compared with LPS 0 h,at LPS 8 h,the oxygenation index and arterial blood pH were significantly decreased(P<0.001),while blood lactic acid and serum potassium were significantly increased(P<0.05);serum calcium and base excess were significantly decreased(P<0.05),and the lung injury score based on HE-stained lung sections was significantly increased(P<0.01).Conclusion The porcine ARDS model established by continuous LPS injection can dynamically simulate the pathophysiological characteristics and typical pathological manifestations of clinical septic ARDS,making it an effective tool to study the pathogenesis,prevention,and treatment strategies of septic ARDS.