Objective:To explore the construction of an evaluation model for aortic root anatomy and calcium burden in patients with bicuspid aortic valve (BAV) stenosis before transcatheter aortic valve replacement (TAVR) based on deep learning (DL) algorithms.Methods:A retrospective collection of 362 BAV stenosis patients who underwent TAVR from September 2023 to May 2024 was performed. All patients underwent cardiac CT angiography. The patients were divided into training group ( n=104), internal validation group ( n=206), and external validation group ( n=52). A DL model was trained on the training dataset to assess aortic root anatomy and calcification burden. The evaluation included the segmentation accuracy of the algorithm, the measurement performance of key anatomical structures (i.e., valve leaflets and type-1 and type-2 fusion raphe), and calcification burden, as well as the measurement efficiency. Overall segmentation performance was assessed using the average Dice coefficient (ADC). The fine-scale segmentation quality was validated by the 95th-percentile Hausdorff distance (HD-95) and the average symmetric surface distance (ASSD). The consistency of the measurement results was assessed using the Pearson correlation coefficient and the intraclass correlation coefficient ( ICC) with a two-way mixed model for absolute agreement. In addition, the total time and total mouse movement distance required for manual assessment versus the DL model on the validation datasets were recorded and compared. Results:The algorithm demonstrated excellent segmentation performance on aortic root anatomical targets, achieving outstanding consistency within both internal and external validation datasets (0.955

Objective:To explore the construction of an evaluation model for aortic root anatomy and calcium burden in patients with bicuspid aortic valve (BAV) stenosis before transcatheter aortic valve replacement (TAVR) based on deep learning (DL) algorithms.Methods:A retrospective collection of 362 BAV stenosis patients who underwent TAVR from September 2023 to May 2024 was performed. All patients underwent cardiac CT angiography. The patients were divided into training group ( n=104), internal validation group ( n=206), and external validation group ( n=52). A DL model was trained on the training dataset to assess aortic root anatomy and calcification burden. The evaluation included the segmentation accuracy of the algorithm, the measurement performance of key anatomical structures (i.e., valve leaflets and type-1 and type-2 fusion raphe), and calcification burden, as well as the measurement efficiency. Overall segmentation performance was assessed using the average Dice coefficient (ADC). The fine-scale segmentation quality was validated by the 95th-percentile Hausdorff distance (HD-95) and the average symmetric surface distance (ASSD). The consistency of the measurement results was assessed using the Pearson correlation coefficient and the intraclass correlation coefficient ( ICC) with a two-way mixed model for absolute agreement. In addition, the total time and total mouse movement distance required for manual assessment versus the DL model on the validation datasets were recorded and compared. Results:The algorithm demonstrated excellent segmentation performance on aortic root anatomical targets, achieving outstanding consistency within both internal and external validation datasets (0.955

Objective:To investigate pediatric colonoscopy procedures and the associated changes in the disease spectrum.Methods:The clinical data of 1 087 children who underwent pediatric colonoscopy at the Second Affiliated Hospital of Nanjing Medical University and Yili Prefecture Friendship Hospital Affiliated to Nanjing Medical University from January 2012 to December 2022 were retrospectively collected. Patients were divided into 0-3 ( n=165), 4-6 ( n=307), 7-10 ( n=275) and 11-14 ( n=340) years groups according to their age, and also divided into two time periods according to the examination time point, 2012-2017 ( n=302) and 2018-2022 ( n=785) groups. Indicators that were observed and analyzed included the primary reasons for colonoscopy, types and proportions of abnormalities, distribution of cases and symptoms by period and age group, and disease diagnosis and treatment before and after colonoscopy. Results:A total of 1 238 colonoscopies were completed in 1 087 children. Blood in the stool was the most common cause (337/1 087, 31.00%). The most abnormalities were found in intestinal polyps (190/1 087, 17.48%) and inflammatory bowel disease (IBD) (181/1 087, 16.65%), as well as in 95 cases (95/1 087, 8.74%) who were confirmed autism and requested colonoscopy placement for fecal microbiota transplantation (FMT). There were differences in case distribution and symptoms among different age groups: polyps were most common in the 0-3 years group (75/165, 45.45%), and IBD was most common in the 11-14 years group (97/340, 28.53%). Compared with 2012-2017, during 2018-2022, the proportion of colonoscopies for polyps in children decreased [from 49.67% (150/302) to 5.10% (40/785), P<0.001], while the proportion for IBD increased [from 12.25% (37/302) to 18.34% (144/785), P=0.016], and autism requiring colonoscopic duct placement for FMT increased [from 2.32% (7/302) to 11.21% (88/785), P<0.001]. Conclusion:Pediatric colonoscopy plays an important role in the diagnosis and treatment of pediatric diseases. With the increasing clinical application demands, diversified procedures such as pre-FMT colonoscopic duct placement are becoming important directions for the future development of pediatric colonoscopy.

A survey on mental health status was conducted during October 2021 to January 2022 among grade 2017—2021 medical students majored in general practice who received 3+2-year education integrated undergraduate study and residency training for assistant physicians in a medical school in Jiangsu province. The SCL-90 and the self-made scale were used to investigate the mental health status and the results were compared with the national norm, the norm of national physicians, and the norm of medical students in Jiangsu province. A total of 125 valid questionnaires were recovered, and the positive detection rate of SCL-90 scale was 17.6%. Compared with the national norm in 2015, the scores of forcing ( t=-2.47), the interpersonal sensitivity ( t=-2.00), the hostile ( t=-2.65), the paranoid( t=-3.14) and the psychiatric factor( t=-2.45) of the study group were significantly lower than those of the norm ( P<0.05). Compared with the norm of national physicians and the norm of medical students in Jiangsu province, the scores of all the items except the fear factor were lower than those of the norms ( P<0.05). In the study group there were no significant differences in the total score and all factors among students with different genders, different training stages, and different background. The total score of SCL-90 scale was negatively associated with the study performance and clinical skill mastery ( r=-0.18) and the sense of achievement ( r=-0.23, P<0.05). The study shows that the mental health status of this group of students is generally better than that of the several norms.

Objective To investigate the value of SpyGlass single-operator choledochoscopy system in the diagnosis and treatment of patients with unexplained biliary stricture, complex bile duct stones, or other biliary tract diseases. Methods A retrospective analysis was performed for the clinical data of the patients with biliary tract diseases who were diagnosed and treated with SpyGlass in The Second Affiliated Hospital of Nanjing Medical University from December 2017 to June 2020. For the patients with biliary stricture, the biliary lesions were fully visualized under the guidance of SpyGlass, and SpyBite biopsy was performed if necessary; the patients with bile duct stones were treated with SpyGlass-guided direct-view laser lithotripsy; for the patients with gallbladder disease, the cystic duct was superselected with the assistance of SpyGlass. The SpyGlass system was analyzed in terms of its sensitivity, specificity, and accuracy rate in diagnosis and treatment, lithotripsy success rate, stone clearance rate, procedure success rate, and incidence rate of complications. Results A total of 58 patients underwent SpyGlass procedure. SpyGlass was used to evaluate biliary stricture of unknown nature in 44 (76%) patients; SpyGlass visual impression had a diagnostic sensitivity of 92% (24/26), a specificity of 94% (17/18), and an accuracy of 93% (41/44), and SpyBite biopsy had a diagnostic sensitivity of 71% (15/21), a specificity of 92% (11/12), and an accuracy of 79% (26/33). SpyGlass was used for the treatment of bile duct stones in 8 patients (14%), with a lithotripsy success rate of 83% (5/6) and a stone clearance rate of 88% (7/8). A guide wire under the SpyGlass system was to superselect the cystic duct in 5 patients (9%), with a procedure success rate of 80% (4/5). In one patient (1%), SpyGlass was used to assist the removal of common bile duct stones after liver transplantation and the treatment of bile duct anastomotic stricture. A total of 5 patients (9%) experienced complications after surgery. Conclusion The SpyGlass choledochoscopy system is accurate, safe, and effective in the diagnosis and treatment of unexplained biliary stricture, complex bile duct stones, and other biliary tract diseases.

Objective: To evaluate the methodology, safety and clinical applications of colonic transendoscopic enteral tubing (TET) as a new method of fecal microbiota transplantation (FMT) and colonic administration. Methods: This prospective study included patients who underwent colonic TET for FMT and(or) colonic administration in the Second Affiliated Hospital of Nanjing Medical University from October 2014 to December 2018. The TET procedure time, success rate, retention time of TET tube, factors influencing TET tube retention, adverse events and satisfaction degree were evaluated. Results: A total of 257 patients underwent TET, among whom 130 patients (50.6%) for microbiota tronsplantation, 8 patients (3.1%) for colon-drip medication, 118 patients (45.9%) for FMT and colon-drip medication, and 1 patient (0.4%) without treatment after TET. The TET procedure time was 10.0±2.8 min. The number of endoscopic clips used was 3.5±1.0. The success rate of the TET procedure was 100.0% (257/257). The retention time of TET tube for 160 patients maintaining the tube for treatment was 9.3±3.8 days. Multivariate analysis indicated that endoscopic clip type (P=0.001) was an independent influencing factor for the retention time of the tube. A total of 9 patients (3.5%) reported adverse events of mild anus discomfort, 4 patients (1.6%) of mobile inconvenience, 3 (1.2%) of anal pain, 2 (0.8%) of mild abdominal pain, 2 (0.8%) of mild bloating, and 1 (0.4%) of mild anal bleeding. No severe adverse events were observed in this study. The total satisfaction degree on colonic TET was 97.3% (250/257) in all patients. Conclusion The colonic TET, a safe and easy-operating endoscopic interventional technology with a high degree of patients satisfaction, can be used for colonic delivering of FMT and medications for various diseases.

Skin injuries always disturb people's normal life, even seriously damage the body health. Thus, it is very necessary to use medical dressings to protect and treat skin wounds. Compared with traditional dressings, novel biological dressings develop more rapidly and their application scope is gradually expanding. Collagen is a natural biological material that can promote wound healing and it also has unique functional advantages in care and treatment. At present, collagen-based medical dressings has become one of the preferred choices to assist wound healing. The authors summarize the source, functional advantages and product classification of collagen-based dressings, and introduce the characteristics and applications of various collagen-based dressings, to provides a reference for further research of the collagen-based wound dressings.

Objective: To survey the resident participation in community health management service and its influencing factors. Methods: A survey on the resident participation in community health management service with self-designed questionnaire was conducted during January to March 2018 among residents in one of the subdistricts in Nanjing Gulou district. The questionnaire includes basic information of residents, understanding health management service, and the participation in the health management. Results: Total 500 questionnaire were distributed, 449 copies were retrieved and 402 were valid. The rates of engagement in health archives, management of blood pressure, blood glucose and blood lipids, attending health education, regular health check-up, health follow-ups, and equipping family medicine kits were 62.2% (250/402), 71.0% (286/402), 49.5% (199/402), 59.9% (241/402), 72.6% (292/402), 66.9% (269/402), respectively. The rates of engagement of health archives, attending health education, regular health check-up and equipping family medicine kits for healthy residents were higher than those with chronic diseases (χ²=6.31, 4.09, 10.83, 10.83; P<0.05). The logistic regression analysis suggested that age, income, and understanding health management services were independent influence factors for resident active participation in health management. Conclusion The survey indicates that the young, high-income and healthy residents are more likely to participate in health management service, and the overall resident participation needs to be further improved.

Objective To investigate the demands and needs of patients contracting for family doctor service in Nanjing Gulou district. Methods A questionnaire survey was conducted between July and December 2017 among residents in Nanjing Gulou district. The questionnaire included basic information of residents, willingness to sign service contract with family doctors, annual outpatient needs, demands of service mode, expectation for family doctor service, and willingness to pay. Results A total of 420 questionnaires were distributed and 415 questionnaires were valid. Multivariate analysis of variance suggested that age, income, and understanding of signing family doctor service were independent factors influencing signing intention (P<0.05).The variance analysis trend test indicated that the healthy people had highest willingness of signing, followed by the patients and the pregnant women (F=6.82, P<0.01). The number of annual outpatient service needs for healthy population, hypertensive patients, diabetic patients and pregnant women was(2.64±3.48),(7.02±4.80),(9.98±5.37)and(11.20±4.33)respectively (F=77.94, P<0.01). The average need of outpatient visit for health males was higher than that for females (P<0.01). There were significant differences in outpatient needs between patients with non-complicated hypertensionand complicated hypertension (P<0.01). The most anticipated services for healthy people were health records (74.26％,101/136), medical appointments (56.62％,77/136), and physical check-up (56.62％,77/136);those were management of blood glucose, blood pressure and body weight (70.13％, 108/154), regular testing (66.88％,103/154), follow-up supervision (66.23％,102/154) for chronic patients;those were regular physical examination (80.26％, 61/76), follow-up supervision (50.00％, 38/76) and health records (46.05％, 35/76) for pregnant women. The most popular health communication channel is WeChat, accounting for 44.10％(183/415), followed by outpatient clinic, telephone and internet services, accounting for 37.11％(154/415), 31.57％(131/415)and 11.08％(46/415)respectively. Among those who chose WeChat, 81.4％(149/183) were under 45 years old. And 86.27％(358/415)of people were willing to pay for corresponding signing fees. Conclusion Age, income, and understanding of general practice will affect residents′ willingness to sign the service contract with family doctors. Gender, disease spectrum and number of illnesses affect residents′outpatient service needs. Individualized family doctor service should be provided for people with different health needs.

Objective To learn the relationship and operating mechanism between medical staff's loyalty and patient satisfaction.Methods Medical staff and inpatients of a tertiary hospital in Nanjing were sampled at a 1:2 ratio for study,with 840 questionnaires released and 269 valid questionnaires recovered;medical staff service quality as perceived by inpatients served as the intermediate variable,with Mplus7.0 used to build a structural formula model for an empirical study of the relationship between staff loyalty and patient satisfaction.Results Staff loyalty exerts certain positive influence on patient satisfaction and staff service quality ( P < 0.001 ); service quality also exerts some positive influence on patient satisfaction (P<0.001);staff loyalty indirectly exerts positive influence(P<0.001)via the service quality as perceived by patients(mediation effect value 0.364 > direct effect value 0.143).Conclusions Structural formula model can reveal the relationship and extent of the influence of staff loyalty on patient satisfaction.This indicates that hospitals should enhance the loyalty,medical competence and communication skills of their medical staff for higher patient satisfaction.