Objective:To explore the application and diagnostic value of low-dose scan technique of chest computed tomography(CT)combined with three dimensional(3D)reconstruction for ribs in chest trauma.Methods:A total of 118 patients with highly suspected rib fracture who admitted to the 904th Hospital of People's Liberation Army Joint Service Support Force were selected,and all cases underwent low-dose scan technique of chest CT combined with 3D reconstruction for ribs.The image qualities of chest CT scans with different low-doses combined with 3D reconstruction for ribs were analyzed,and the diagnostic accuracies among low dose scan technique of chest CT,3D reconstruction for ribs and the combination of them for chest trauma were compared.Results:Both the sharpness and clarity of the edges of the bronchi,blood vessels,lung parenchyma,interlobular septum,mediastinum and ribs were poorer,and the artifacts of soft tissue were more and the noise were more when the tube current of CT scan was 50 Ma.Both the sharpness and clarity of the edges of the bronchi,blood vessels,lung parenchyma,interlobular septum,mediastinum and ribs were general,and a part of soft tissues existed artifacts and the noise amounts were less when the tube current of CT scan was 70 Ma,which did not affect the diagnosis.The radiation dose as 50 mA was significantly higher than that as 70 mA,with a statistically significant difference(t=10.969,P<0.05).In 118 patients with chest trauma,the examination of low-dose scan technique of chest CT combined with 3D reconstruction for ribs indicated that there were 112 cases of rib fractures and 7 cases of costal cartilage fractures.In the examined 388 fractures of rib and costal cartilage,355 fractures(91.49%)were rib fractures and 33 fractures(8.51%)were costal cartilage fractures.In 118 patients with chest trauma,76 cases(64.41%)complicated with pulmonary contusions and lacerations,and 41 cases(35.75%)complicated with pleural effusion,and 10 cases(8.47%)complicated with thoracic vertebral fractures,and 6 cases(5.08%)complicated with splenic contusions and lacerations,and 5 cases(4.24%)complicated with mediastinal and subcutaneous emphysemas.The most direct imaging sign of rib fracture was visible and transparent low-density shadow.Chest CT scan can generally better display dislocation of the fractured end.The 3D reconstruction image showed a visibly line-like shadow on one side of rib if only one side of ribs fractured and the other side was intact.A total of 395 rib and costal cartilage fractures were confirmed by 3D reconstruction,which included 363 rib fractures(91.90%)and 32 costal cartilage fractures(8.10%).A total of 410 rib and costal cartilage fractures were confirmed by low-dose scan technique of chest CT combined with 3D reconstruction for ribs,which included 375 rib fractures(91.46%)and 35 costal cartilage fractures(8.54%).In the comparison of 418 rib injuries that were confirmed during surgery,the accuracy of low-dose scan technique of chest CT was 92.82%(388/418)in diagnosing rib and costal cartilage fractures,and the accuracy of 3D reconstruction for ribs was 94.50%(395/418)in diagnosing that,and the accuracy of low-dose scan technique of chest CT combined with 3D reconstruction for ribs was 95.69%(410/418)in diagnosing that.There was a significant difference in accuracy among the three types of examinations(x2=13.062,P<0.05).Conclusion:Low dose scan technique of chest CT combines with 3D reconstruction for ribs can be used in the diagnosis of chest trauma,which has higher accuracy and can provide reliable imaging information for clinical diagnosis and treatment.

Objective To evaluate the efficacy,safety and economy of centrally procured ceftazidime injection for treating pulmonary infections,and to provide a reference for clinical therapeutic decisions.Methods Based on the active monitoring and drug evaluation functions of the China Hospital Pharmacovigilance System(CHPS),a retrospective analysis was conducted.Electronic medical records of 203 patients treated with ceftazidime injection for pulmonary injections in our hospital from February 2021 to August 2022 were collected.Patients were divided into two groups based on the type of ceftazidime used,the centrally procured ceftazidime group(102 cases)and the non-centrally procured ceftazidime group(101 cases).Efficacy was evaluated by the effectiveness rate,safety by the incidence of adverse reactions,and economy by cost-effectiveness analysis.Differences between the two groups were compared.Results Treatment efficiency was 90.20%in the centrally procured group and 91.09%in the non-centrally procured group,with no statistically significant difference(P>0.05).The incidence of adverse reactions was 10.78%in the centrally procured group and 5.94%in the non-centrally procured group,with no statistically significant difference(P>0.05).The average cost-effectiveness ratio(C/E)was 1.56±0.86 in the centrally procured group and 18.96±9.38 in the non-centrally procured group,indicating a smaller C/E value for the centrally procured group.Sensitivity analysis results were consistent with the cost-effectiveness analysis results.Conclusion Centrally procured ceftazidime injection has equivalent efficacy and safety compared to non-centrally procured ceftazidime,with improved economic value.Therefore,the centrally procured variant should be given priority when using ceftazidime for the treatment of pulmonary infections.

mRNA vaccine technology has made significant progress in recent years, especially with the large-scale application driven by the COVID-19 pandemic. Moderna and Pfizer/BioNTech vaccines have become central tools in the global fight against the virus, demonstrating the potential of the mRNA platform for rapid design, production, and strong immune responses. These vaccines showcase the unique advantages of rapid response and effective protection. At the same time, mRNA technology still faces challenges, such as stability and targeted delivery. Future research will focus on improving the stability and safety of mRNA vaccine and expanding its application to more infectious diseases and cancer treatments. This article reviews platforms of mRNA vaccine, vaccine design, development of delivery system, and the application of mRNA vaccines, in order to enhance the understanding of professionals and accelerate the layout of this technology in vaccine research and application in China.

mRNA vaccine technology has made significant progress in recent years, especially with the large-scale application driven by the COVID-19 pandemic. Moderna and Pfizer/BioNTech vaccines have become central tools in the global fight against the virus, demonstrating the potential of the mRNA platform for rapid design, production, and strong immune responses. These vaccines showcase the unique advantages of rapid response and effective protection. At the same time, mRNA technology still faces challenges, such as stability and targeted delivery. Future research will focus on improving the stability and safety of mRNA vaccine and expanding its application to more infectious diseases and cancer treatments. This article reviews platforms of mRNA vaccine, vaccine design, development of delivery system, and the application of mRNA vaccines, in order to enhance the understanding of professionals and accelerate the layout of this technology in vaccine research and application in China.

Objective:This study aimed to reveal the distribution and course of the branches of the infraorbital nerve(IN),its communication relationship between the branches of the infraorbital nerve and facial nerve,so as to provide morphological basis for clinical implementation of accurate infraorbital nerve trunk in the infraorbital canal,regional facial anesthesia and facial surgery,so as to improve the success rate of maxillofacial surgery.Methods:25 adult cada-vers with formalin immobilized semi-face were selected.Exclude facial defect samples caused by tumor,trauma,deformity,surgery,etc.The length and diameter of the trunk of the infraorbital nerve and the length of the infraorbital canal were measured.The total number of infraorbital nerve and the number of branches were counted,and the course,distribution and communication relationship between infraorbital nerve and facial nerve were investigated.Results:The length of infraorbital nerve trunk ranged from 19.61 to 44.47 mm,with an average length of(23.33±4.95)mm.The length of infraorbital canal ranged from 9.49 to 31.21 mm,with an average length of(12.87±3.99)mm.The number of infraorbital nerve branches ranged from 5 to 12,and the average number was(7.29±2.29).The number of upper labial branches was the widest,ranging from 1 to 5,while the distribution area of eyelid branches was the narrowest.There are(were)a large number of intersections and anastomoses between the infraorbital nerve and the facial nerve,forming a complex multi-layer network structure.Conclusion:The infraorbital nerve trunk and the infraorbital canal va-ry in length.The number and distribution range of infraorbital nerve branches are not constant,and the communication relationship between infraorbital nerve and facial nerve is complicated.

Objective:To establish a new classification system for distal clavicle fracture and evaluate its clinical effectiveness.Methods:A retrospective case series study was conducted to analyze the clinical data of 101 patients with distal clavicle fracture admitted to First Affiliated Hospital of Nanjing Medical University from January 2015 to March 2022, including 57 males and 44 females, aged 19-86 years [(53.8±14.0)years]. Before treatment, patients were routinely subjected to bilateral anteroposterior radiography of the shoulder joints to measure the length of the fractured fragments, coracoclavicular distance, and acromioclavicular distance. According to the correlation between the location of the fracture line and the insertion of the coracoclavicular ligament, distal clavicle fracture was divided into three types: type I, with the fracture line lateral to the coracoclavicular ligament region; type II, with the fracture line in the coracoclavicular ligament region; type III, with the fracture line medial to the coracoclavicular ligament region. According to the injury severity of the coracoclavicular ligament and acromioclavicular ligament, type I was further subdivided into type IA, IB, IC and ID, and type II fracture was further subdivided into type IIA, IIB, IIC, IID and IIE. All the 101 patients were classified and randomly reclassified at an interval of 3 months by 10 senior and 10 junior shoulder surgeons according to the new classification method. Kappa coefficients were used to evaluate the inter- and intra-observer consistency of the new classification. Fifty-two patients with stable fracture (types IA, IB, IIC, and IID) were treated non-surgically, while 49 patients with unstable fracture (types IC, ID, IIA, IIB, IIE, and III) were treated surgically, including 26 patients with anatomic coracoclavicular ligament reconstruction, 9 with locking plate fixation, 8 with clavicle hook plate fixation, 4 with anatomic coracoclavicular ligament reconstruction combined with locking plate fixation, and 2 with anatomic coracoclavicular ligament reconstruction combined with tension screw fixation. The patients were assessed using the visual analogue scale (VAS) and Constant-Murley shoulder score before treatment and at 3, 6, 12, and 18 months after treatment. The coracoclavicular distance and acromioclavicular distance on the anteroposterior radiographs of the healthy and affected shoulder joints were measured at 3, 6, 12, and 18 months after treatment, and fracture healing time and complications were observed.Results:The length of the fractured fragments was 12.9 (9.7, 17.6)mm in patients with type I fracture, 24.7 (21.8, 27.8)mm in patients with type II fracture, and 43.6 (41.2, 46.9)mm in patients with type III fracture ( P<0.01). There were no significant differences in the coracoclavicular distance and acromioclavicular distance of the affected and healthy shoulders among the patients with types IA, IB, IIC, IID, and III fracture ( P>0.05); For the patients with types IC, IIA, IIB and IIE fracture, the coracoclavicular distance of the affected shoulder was significantly increased compared with that of the healthy shoulder ( P<0.01), while there was no significant difference in the acromioclavicular distance of the affected and healthy shoulders ( P>0.05). Both of the inter- and intra-observer consistency of the new classification was good. The inter- and intra-observer Kappa values were 0.69 and 0.71 respectively among the senior shoulder surgeons, and 0.61 and 0.64 respectively among the junior shoulder surgeons. All the patients were followed up for 18-104 months [28(23, 32)months]. At 3, 6, 12 and 18 months after treatment, the VAS scores of non-surgical patients were 3(2, 3)points, 2(1, 2)points, 1(0, 1)points and 0(0, 1)points respectively, significantly decreased compared with 6(5, 6)points before treatment ( P<0.01); the VAS scores of surgical patients were 3(2, 3)points, 2(1, 2)points, 1(1, 1)points and 0(0, 1)points respectively, significantly decreased compared with 6(5, 7)points before treatment ( P<0.01); the Constant-Murley shoulder scores of non-surgical patients were (76.6±5.3)points, (84.3±5.0)points, (88.4±4.0)points and (91.9±3.8)points respectively, significantly higher than (42.7±5.2)points before treatment ( P<0.01); the Constant-Murley shoulder scores of surgical patients were (77.4±4.6)points, (84.4±4.7)points, (87.6±3.7)points and (91.7±4.0)points respectively, significantly higher than (42.8±5.3)points before treatment ( P<0.01). At 3, 6, 12 and 18 months after treatment, the coracoclavicular distance of the affected shoulder in non-surgical patients was not significantly different from that before treatment ( P>0.05), while the acromioclavicular distance of the affected shoulder in surgical patients was significantly reduced compared with that before treatment ( P<0.01). There were no significant differences in the coracoclavicular distance of the healthy shoulder or bilateral acromioclavicular distance in non-surgical and surgical patients at 3, 6, 12, and 18 months after treatment compared with those before treatment ( P>0.05). Fractures were healed within 12 months after treatment in all the patients, without dislocation or subluxation of the acromioclavicular joint, internal fixation failure or internal fixator breakage. Eight patients treated with clavicular hook plate fixation had shoulder pain associated with limited mobility after operation, and all underwent a second operation to remove the clavicular hook plate at 12 months after operation. Conclusions:The new classification system for distal clavicle fracture is established, which comprehensively considers the position of the fracture line, injury of the coracoclavicular and acromioclavicular ligaments, and fracture stability. The new classification system exhibits good inter- and intra- observer consistency, and the effectiveness of its preliminary clinical application is satisfactory.

Objective:To explore the feasibility of circulating tumor cell (CTC) dual-antibody enrichment and dual-antibody detection for epithelial-mesenchymal phenotypes in patients with hepatocellular carcinoma (HCC), and investigate the clinical diagnostic value of CTC typing in evaluating postoperative recurrence and prognosis of HCC.Methods:Of 89 HCC patients who underwent surgical treatment in Zhejiang Jinhua Guangfu Tumor Hospital from March 2020 to January 2024 were enrolled into this study, including 73 males and 16 females, aged (64.4±9.5) years old. The peripheral blood samples of patients were collected before operation. Epithelial CTC, mesenchymal CTC and hybrid epithelial-mesenchymal CTC in blood samples of patients with HCC were enriched and detected by EpCAM/CSV double capture antibodies and PanCK/CSV double detection antibodies. Kaplan-Meier analysis was employed to assess recurrence-free survival (RFS) and overall survival (OS) rates. Univariate and multivariate Cox regression were used to analyze the effects of different types of CTC on postoperative RFS and OS.Results:The detection rates of total CTC, epithelial CTC, mesenchymal CTC and hybrid epithelial-mesenchymal CTC were 92.1% (82/89), 64.0% (57/89), 62.9% (56/89) and 55.1% (49/89), respectively. Multivariate Cox regression analysis showed that HCC patients with more mesenchymal CTC ( HR=2.408, 95% CI: 1.580-3.668) and hybrid epithelial-mesenchymal CTC ( HR=1.840, 95% CI: 1.004-3.371) in peripheral blood had higher postoperative recurrence risk (both P<0.05). Univariate Cox regression showed patients with more total CTC ( HR=1.426, 95% CI: 1.040-1.954, P=0.028) was associated with survival. Conclusion:The technique of epithelial-mesenchymal phenotypes analysis of circulating tumor cells based on dual-antibody capture and dual-antibody detection is feasible. The number of mesenchymal CTC and hybrid epithelial-mesenchymal CTC before operation is the influencing factor of postoperative recurrence in patients with hepatocellular carcinoma.

Objective:To evaluate the optimization effects of serratus anterior plane block (SAPB) combined with general anesthesia for thoracoscopic surgical ablation of atrial fibrillation (TSAAF).Methods:Eighty American Society of Anesthesiologists Physical Status classification Ⅰ-Ⅲ patients of either sex, aged >18 yr, with a body mass index of 18-30 kg/m 2, scheduled for elective TSAAF, were randomly assigned to either SAPB combined with general anesthesia group (SG group) or general anesthesia group (G group), with 40 cases in each group. SG group received ultrasound-guided bilateral SAPB with 0.375% ropivacaine 20 ml each before surgery, while G group did not receive block before operation. Both groups underwent general anesthesia. The time to the first analgesia pump use, the number of successfully delivered doses and requirement for rescue analgesia within 48 h after operation were recorded. Inspiratory spirometry was measured at preoperative day 1 (T 0), at the time of discharge from the recovery room (T 1), and at 24 and 48 h after operation (T 2, 3). The extubation time was also recorded. The usage of intraoperative remifentanil, norepinephrine and ephedrine, duration of recovery room stay, and occurrence of recurrent atrial fibrillation, delirium, respiratory depression, and nausea/vomiting within 48 h after operation, and length of postoperative hospital stay were recorded. Results:Compared to G group, the time to the first analgesia pump use was significantly prolonged, the number of successfully delivered doses was reduced within 48 h after operation, the rate of rescue analgesia was decreased, inspiratory spirometry was increased at T 1-3, the extubation time and length of postoperative hospital stay were shortened, and the recurrence rate of atrial fibrillation was decreased within 48 h after surgery in SG group ( P<0.05). No significant differences were found between the two groups regarding the intraoperative remifentanil consumption, usage rate of vasoactive drugs, and incidence of postoperative nausea/vomiting, delirium and respiratory depression ( P>0.05). Conclusions:Combination of SAPB and general anesthesia can effectively improve the postoperative analgesic effect and is helpful for the recovery in the patients undergoing TSAAF.

Human epidermal growth factor receptor 2 (HER2) -positive breast cancer is prone to metastasis and has a poor prognosis. In the context of the booming development of anti-HER2 targeted therapy, HER2-positive breast cancer has reduced recurrence and metastasis and improved prognosis. However, there are still some HER2-positive breast cancer patients who cannot benefit from anti-HER2-targeted therapy and continue to develop recurrent metastasis. Neoadjuvant therapy, surgical treatment, and the full range of adjuvant and palliative therapies enable HER2-positive breast cancer to benefit from them. Scholars from home and abroad have explored the treatment of HER2-positive breast cancer and have achieved some results. In this article, we review the current status and development of HER2-positive breast cancer treatment.

Background With the rise and deepening of positive psychology research, theoretical research on job burnout is also deepening worldwide, and some new theoretical models are proposed, such as the burnout-engagement continuum, but there is still a lack of empirical research and application in China. Objective To analyze the current situation and influencing factors of five profiles in the burnout-engagement continuum in working populations of China: job engagement, ineffective, overextended, disengaged, and burnout. Methods From August to October 2019 and June to September 2020, a total of 27344 subjects of key occupations in six typical industries, including teachers, firefighters, manufacturing workers, medical staff, flight attendants, and traffic police, were selected from 10 provinces (cities) in the eastern, middle, and western regions of China by multistage stratified cluster sampling method for cross-sectional investigation. Maslach Burnout Inventory-General Survey and Core Occupational Stress Scale were used to evaluate job burnout and occupational stress respectively. χ² test was used to compare rates of count data. Binary logistic regression was used for multivariate analysis of the five profiles. Results Among the subjects, 24.4%, 61.9%, 31.9%, 12.7%, and 11.8% were the prevalence rates of job engagement, ineffective, overextended, disengaged, and burnout, respectively. Flight attendants (35.7%), firefighters (29.0%), traffic police (28.5%), and manufacturing workers (26.5%) had high prevalence rates of job engagement profile. Medical stuff (62.9%) and manufacturing workers (61.8%) had high prevalence rates of ineffective profile. Teachers (39.2%), traffic police (37.2%), and medical stuff (35.5%) had high prevalence rates of overextended profile. Traffic police (17.9%), medical staff (14.3%), and teachers (13.4%) had high prevalence rates of disengaged profile. Traffic police (16.9%), medical staff (13.4%), and teachers (13.3%) had high prevalence rates of burnout profile. The results of multivariate analysis showed that gender, age, education level, marital status, weekly working hours, length of service, income per month, shift work, smoking, drinking, industry, and occupational stress entered into the regression equations of job engagement, ineffective, overextended, disengaged, and burnout. The risks of overextended (OR=1.456-2.970), disengaged (OR=1.306-4.092), and burnout (OR=1.302-4.102) among the high rating groups of the four factors of occupational stress were higher than those among the low rating groups. Flight attendants (OR=0.296) and firefighters (OR=0.329) had lower risks of burnout than teachers, and flight attendants (OR=0.392) and firefighters (OR=0.466) had lower risks of disengaged than teachers. Conclusion Among the prevalence rates of the five profiles in the burnout-engagement continuum in the 6 typical occupational populations in China, ineffective profile is the highest, followed by overextended, and burnout is the lowest. Gender, age, education level, marital status, weekly working hours, length of service, income per month, shift work, smoking, drinking, industry, and occupational stress have different effects on the five profiles, but industry and occupational stress have greater impacts on job burnout.