Under the"Four Specials"conditions(special environments,special tasks,special equipment,and special personnel),complex tightly-coupled human-machine systems exhibit distinct characteristics such as human-in-the-loop,frequent human-machine interactions,and significant mutual influence between humans and machines.These features lead to prominent and typical human related safety issues.Through aggregating knowledge from literature review,accident case studies,and engineering practice,this paper elaborates on the characteristics of complex tightly-coupled human-machine systems,clarifies the definition of human related safety(including its research subjects,topics,and methods),and provides a systematic analysis framework on the causes of human related safety from a whole life-cycle perspective of system development.Furthermore,theoretical hypotheses are proposed for human related safety,along with its fundamental scientific research questions and methods.

Objective:To explore the clinical efficacy and safety analysis of a novel laser localization technology assisted percutaneous puncture of trigeminal nerve microsphere capsule compression surgery for the treatment of primary trigeminal neuralgia.Methods:A retrospective selection was conducted on 63 patients with primary trigeminal neuralgia who underwent percutaneous puncture of the trigeminal nerve microsphere capsule compression surgery at the First Hospital of Hunan University of Chinese Medicine from January 2020 to December 2021. According to different surgical methods, they were divided into a new laser localization assisted puncture group (observation group) of 32 cases and a traditional barehanded localization puncture group (control group) of 31 cases. An analysis was conducted on the surgical time, puncture time, puncture frequency, intraoperative exposure to radiation, number of cases of poor balloon formation, and clinical efficacy within 6 months after surgery for two groups of patients. The prognosis of the patients was followed up at 6 months after surgery.Results:The surgical time, puncture time, puncture frequency, and intraoperative exposure of the observation group were all less than those of the control group, and the differences were statistically significant (all P<0.05). There was no statistically significant difference ( P>0.05) in the number of cases of poor balloon angioplasty between the observation group and the control group, as well as the pain score grading of the Barlow Neurological Institute (BNI) on the first day after surgery. Within 6 months after surgery, there was no statistically significant difference in the incidence of facial numbness, diplopia, masseter weakness, perilabial herpes, and recurrent pain between the two groups of patients (all P>0.05). Conclusions:Laser positioning technology can assist in precise puncture of the foramen ovale and accurate placement of balloons based on surgical experience, which helps to improve surgical safety, reduce postoperative complications and intraoperative radiation dose, and achieve satisfactory short-term follow-up results.

Background::Differentiated thyroid cancer (DTC) is commonly diagnosed in women of child-bearing age, but whether pregnancy influences the prognosis of DTC remains controversial. This study aimed to summarize existing evidence regarding the association of pregnancy with recurrence risk in patients previously treated for DTC.Methods::We searched PubMed, Embase, Web of Science, Cochrane, and Scopus based on the prespecified protocol registered at PROSPERO (CRD42022367896). After study selection, two researchers independently extracted data from the included studies. For quantitative data synthesis, we used random-effects meta-analysis models to pool the proportion of recurrence (for pregnant women only) and odds ratio (OR; comparing the risk of recurrence between the pregnancy group and the nonpregnancy group), respectively. Then we conducted subgroup analyses to explore whether risk of recurrence differed by response to therapy status or duration of follow-up time. We also assessed quality of the included studies.Results::A total of ten studies were included. The sample size ranged from 8 to 235, with participants’ age at pregnancy or delivery ranging from 28 to 35 years. The follow-up time varied from 0.1 to 36.0 years. The pooled proportion of recurrence in all pregnant patients was 0.13 (95% confidence intervals [CI]: 0.06-0.25; I2: 0.58). Among six included studies reporting response to therapy status before pregnancy, we observed a trend for increasingly higher risk of recurrence from excellent, indeterminate, and biochemically incomplete to structurally incomplete response to therapy ( Ptrend <0.05). The pooled risk of recurrence in the pregnancy group showed no evidence of a significant difference from that in the nonpregnancy group (OR: 0.75; 95% CI: 0.45-1.23; I2: 0). The difference in follow-up time (below/above five years) was not associated with either the proportion of recurrence in all pregnant patients ( P >0.05) or the OR of recurrence in studies with a comparison group ( P >0.05). Two included studies that focused on patients with distant metastasis also did not show a significant difference in disease recurrence between pregnancy and nonpregnancy groups (OR: 0.51 [95% CI: 0.14-1.87; I2: 59%]). Conclusion::In general, pregnancy appears to have a minimal association with the disease recurrence of DTC with initial treatment. Clinicians should pay more attention to progression of DTC among pregnant women with biochemical and/or structural persistence.Registration::PROSPERO, https://www.crd.york.ac.uk/PROSPERO/; No. CRD42022367896.

Objective To investigate the changes in serum levels of chemokine ligand 19(CCL19),soluble co stimulatory molecule B7-H3(sB7-H3),and soluble programmed death protein 1(sPD-1)in patients with recurrent oral ulcer(ROU)and their predictive value for recurrence.Methods A total of 320 patients with ROU accepted by our hospital from April 2021 to April 2022 were collected as the study subjects,namely the ROU group.During the same period,320 healthy volunteers without oral diseases who underwent physical ex-amination in our hospital were regarded as the reference group.Enzyme linked immunosorbent assay(ELISA)was applied to detect levels of CCL19,sB7-H3,and sPD-1 in serum.Pearson method was applied to analyze the correlation between the expression levels of CCL19,sB7-H3,and sPD-1 in the serum of ROU patients and the levels of interleukin-6(IL-6),interleukin-10(IL-10),and tumor necrosis factor-α(TNF-α).ROC curve was applied to analyze the predictive value of serum levels of CCL19,sB7-H3,and sPD-1 in patients with ROU for recurrence.Results Compared with the reference group,the serum levels of CCL19 and sPD-1 in the ROU group were obviously increased,while the level of sB7-H3 was obviously reduced(P＜0.05).The serum lev-els of IL-6,IL-10,and TNF-α in the ROU group were obviously higher than those in the reference group(P＜0.05).Correlation analysis showed that the levels of CCL19 and sPD-1 in the serum of ROU patients were positively correlated with the levels of IL-6,IL-10,and TNF-α,while the level of sB7-H3 was negatively corre-lated with the levels of IL-6,IL-10,and TNF-α(P＜0.05).Compared with the non recurrent group,the serum levels of CCL19 and sPD-1 in the recurrent group were obviously increased,while the level of sB7-H3 was ob-viously reduced(P＜0.05).The AUC of combined detection of CCL19,sB7-H3,and sPD-1 in serum for pre-dicting the recurrence of ROU patients was higher than the AUC of single detection of three factors[ZCCL19-the combination of the three-3.-294,P=0.001;ZsB7-H3-the combination of the three=4.348,P＜0.001;ZsPD-1-the combination of the three 4.990,P＜0.001].Conclusion CCL19 and sPD-1 are highly expressed in the serum of ROU patients,while sB7-H3 is lowly expressed.These three factors have certain value in predicting the recurrence of ROU.

Objective To analyze the effect of extracorporeal shock wave assisted drug therapy on clinical outcomes of patients with temporomandibular disorders(TMD).Methods A total of 86 TMD patients in our hospital from September 2018 to September 2019 were included and divided into group A(n=43)and group B(n=43)by random number table method.Group A(n=43)received oral glucosamine hydrochloride tablets on the basis of conventional treatment;group B(n=43)received extracorporeal shock wave therapy on the basis of group A.The pain degree,maximum mouth opening,temporomandibular joint function,temporomandibular joint bounce times,life quality and occurrence of adverse reactions were compared between the two groups.Results Compared with that before treatment,the visual analogue scale(VAS)scores,maximum mouth opening,temporomandibular joint dysfunction index(DI),palpation index(PI),Fricton craniomandibular index(CMI)level,joint bounce times and oral health impact scale(OHIP-14)score of two groups were significantly improved(P＜0.05),and all indexes in group B were significantly better than those in group A(P＜0.05).There was no significant difference in the incidence of adverse reactions between the two groups(P＞0.05).Conclusion Extracorporeal shock wave assisted drug therapy can effectively reduce joint bounce in TMD patients,relieve patients'pain,improve patients'life quality and temporomandibular joint function,and has good safety.

Objective:To compare the prognosis of percutaneous versus laparoscopic microwave ablation in patients with hepatocellular carcinoma (HCC) classified as Barcelona Clinic Liver Cancer (BCLC) stage 0 to A, and evaluate the impact of these two ablation modalities on treatment outcome.Methods:Clinical data of 198 patients with HCC of BCLC stages 0 to A undergoing microwave ablation treatment at the Second Hospital of Jiaxing and Shengjing Hospital of China Medical University from January 2011 to December 2018 were retrospectively analyzed, including 149 males and 49 females, aged (57.4±9.6) years. Patients were divided into two groups based on the treatment modality: percutaneous microwave ablation group ( n=133) and laparoscopic microwave ablation group ( n=65). Survival rates were calculated using the Kaplan-Meier method, and the log-rank test was used to compare survival rates. Univariate and multivariate analyses were performed using Cox regression to assess the impacts of percutaneous and laparoscopic microwave ablation on prognosis. Results:The median overall survivals for the percutaneous and laparoscopic microwave ablation groups were 54 months and 77 months, respectively. The 1-, 3-, and 5-year cumulative survival rates postoperatively were 95.6%, 67.3%, 47.4% for the percutaneous group, and 100.0%, 79.9%, 60.4% for the laparoscopic group, respectively, with the latter showing superior cumulative survival rates ( χ2=4.53, P=0.033). The median recurrence-free survival (RFS) was 27 months for the percutaneous group and 52 months for the laparoscopic group. The 1-, 3-, and 5-year RFS postoperatively were 67.4%, 41.1% and 32.8% for the percutaneous group, and 81.5%, 58.1%, and 46.7% for the laparoscopic group, respectively, with the latter showing superior RFS, and the difference was statistically significant ( χ2=7.20, P=0.007). Multivariate analysis indicated that percutaneous microwave ablation was associated with an increased risk of death ( HR=2.475, 95% CI: 1.423-4.305, P=0.001) and recurrence ( HR=1.996, 95% CI: 1.255-3.176, P=0.004). Conclusion:Laparoscopic approach was superior to percutaneous microwave ablation in patients with HCC of BCLC stages 0 to A, and percutaneous microwave ablation could be a risk factor for poor prognosis in these patients.

Objective:To investigate the clinical efficacy of over-the-top reconstruction combined with the modified Lemaire technique in the treatment of anterior cruciate ligament (ACL) injuries with pivot-shift positive.Methods:From March 2020 to October 2021, a total of 46 patients with ACL injury and pivot-shift test grade II or above were admitted to Xinhua Hospital Affiliated to Dalian University. There were 28 males and 18 females, aged 28.0±10.5 years (range, 15-45 years). All cases were unilateral, including 17 cases of left knee and 29 cases of right knee. The pivot-shift test showed that 30 cases were grade II and 16 cases were grade III, and the cause of injury was sports injury. The semitendinosus muscle and gracilis muscle were harvested, and the ACL was reconstructed with the over-the-top combined modified Lemaire technique. The International Knee Documentation Committee (IKDC) score, Lysholm score and KT-2000 side-to-side difference before and after operation were compared.Results:All patients successfully completed the operation and were followed up for 26.6±2.3 months (range, 24-28 months). The Lysholm scores of the patients at 3 months and 24 months after operation were 73.6±4.3 and 91.6±2.8, which were higher than those before operation (58.5±4.6), and the difference was statistically significant ( F=18.351, P<0.001). The IKDC scores of patients at 3 months and 24 months after operation were 59.0±2.0 and 91.8±3.2, respectively, which were higher than those before operation 50.3±2.8, and the difference was statistically significant ( F=17.290, P<0.001). The side-to-side difference of KT-2000 was 1.7±0.8 mm and 1.5±0.4 mm at 3 and 24 months after operation, respectively, which was lower than that before operation (5.9±1.1 mm), and the difference was statistically significant ( F=14.192, P<0.001). At 24 months after operation, 3 patients had pivot shift test grade I and 4 patients had Lachman test grade I, but they complained of good knee stability and did not receive further treatment. At the last follow-up, there were no complications such as incision and intra-articular infection, deep vein thrombosis, knee stiffness, quadriceps musculus ossificans myositis, and reconstruction ligament rupture. All patients returned to sports with an average time of 15.7±2.6 months (range, 12-24 months). Conclusion:Over-the-top reconstruction combined with the modified Lemaire technique for the treatment of ACL injury with positive pivot shift test effectively improves knee function and promotes the patient's return to sports, with a low incidence of surgical complications.

Objectives:To investigate clinical characteristics, outcomes and antimicrobial resistance of community-acquired Pseudomonas aeruginosa (CAPA) infections in Chinese pediatric patients. Methods:This retrospective study was conducted at 6 tertiary hospitals in China during January 2016 to December 2018. The clinical and microbiological data of CAPA infected hospitalized children in Hainan and in other regions were collected and compared, and the antimicrobial resistance patterns, clinical characteristics and antibiotic therapy were analyzed. Between different groups were compared using the Chi-square test and Mann-Whitney U test. Results:Among 91 patients, 63 cases were males, 28 cases were females, and 74 cases were from Hainan province, 17 cases were from other regians. The age of consultation was 22.5 (5.4, 44.0) months. Twenty-four cases (26%) had underlying diseases. Fever (79 cases (87%)) and cough (64 cases (70%)) were common initial symptoms. Other concomitant symptoms included wheezing 8 cases (9%), diarrhea 3 cases (3%) and vomiting 4 cases (4%). Twenty-eight cases (31%) had organ infections, including pneumonia 22 cases (24%), skin infection 5 cases (5%), meningitis, intra-abdominal infection and upper urinary tract infection each 1 case (1%). The resistance rate of CAPA isolates to cefepime (4% (4/90)), amikacin (1% (1/90)), ciprofloxacin (2% (2/90)) and levofloxacin (1% (1/89)) was low, and to ceftazidime, piperacillin, piperacillin-azobactam, carbapenem was 12% (11/90), 3/16, 18% (10/56) and 6% (5/90), respectively. Antimicrobial combination therapy accounted for 52% (47/91) of empirical therapy and 59% (52/88) of definite therapy. Two cases (2%) were hopeless discharged, and 3 cases (3%) died during hospitalization. The worse prognosis of CAPA infection is significantly different among children in other regions and in Hainan (4/17 vs. 1% (1/74), χ2=9.74, P<0.05). Conclusions:The invasive CAPA-infection has regional difference in incidence and prognosis in China. Clinical symptoms and signs are non-specific. CAPA strains isolated from pediatric patients display low level of resistance to most of the common antipseudomonal antibiotics. The proportion of poor prognostic outcome is lower in Hainan than in other regions.

Objective To investigate the prevalence of Helicobacter pylori(H.pylori)positivity in the urban areas of Chongqing and its relationship with age,season,and gender.Methods A total of 4,836 patients who underwent 14C-UBT testing at our hospital from April 2023 to March 2024 were selected.The detection rate of H.pylori and the infection status of H.pylori in different age groups,genders,and seasons were analyzed.Logistic regression analysis was performed on factors related to H.pylori infection identified in the univariate analysis.Results The positive detection rate of H.pylori in the 4,836 subjects was 29.3％,with a higher rate in males than in females,showing a statistically significant difference(P＜0.05).The highest positive detection rate of H.pylori was in the summer season,and the peak positivity rate for H.pylori was observed in the 30-39 age group.There was a statistically significant difference in the positive detection rate of H.pylori across seasons and among different age groups(P＜0.05).Multivariate logistic regression analysis indicated that gender,age,and season were all influential factors in the outcome of H.pylori infection(P＜0.05).Conclusion The prevalence of H.pylori infection in the urban areas of Chongqing is relatively low,and gender,age,and season are all influential factors for H.pylori infection.

Objective To explore the effect of lung protective ventilation strategy in artificial pneumothorax in full laparoscopic radical resection of esophageal cancer.Methods 88 patients were selected from January 2021 to March 2023 for the treatment of artificial pneumothorax with full laparoscopic radical resection of esophageal cancer.They were randomly divided into two groups.44 patients underwent conventional ventilation as the control group,and 44 patients underwent lung-protective ventilation strategy as the experimental group,and the different effects produced by the above different ventilation modes were analyzed.Results There were no significant differences in pH and partial pressure of carbon dioxide(PCO2)between the experimental group and the control group at the 10 min after endotracheal intubation(T1),1 h after single lung ventilation(T2),after surgery(T3),and 24 h after surgery(T4)(P＞0.05).The oxygenation index at the time points of T1,T2,T3 and T4,there were significant differences between the two groups(P＜0.05).The experimental group and the control group had significant differences in static lung compliance(Cs),plateau pressure(Pplat),and peak airway pressure(Ppeak)at the T1,T2,and T3 time points(P＜0.05).At T1,there were no significant differences in the levels of C-reaction protein(CRP),tumor necrosis factor-α(TNF-α),interleukin-8(IL-8),and interleukin-6(IL-6)between the experimental group and the control group at the time points(P＞0.05).There were significant differences of the above indicators between the two groups at T2,T3,and T4 time points(P＜0.05);The incidence of pulmonary complications was 25.00％in the control group compared with 9.09％in the experimental group,there was a significant difference(P＜0.05).Conclusion Tidal volume(VT)6 mL/kg+100.00％inhaled oxygen concentration+positive end-expiratory pressure 5 cmH2O+recruitment lung protective ventilation strategy used in artificial pneumothorax for full laparoscopic radical resection of esophageal cancer can significantly reduce intraoperative airway pressure and inhibit inflammatory reaction and increase ventilation safety.