ObjectiveTo investigate the accuracy of multiple discriminant analysis （MDA） versus fibrosis-4 （FIB-4） in assessing liver fibrosis degree in patients with HBV infection， as well as the possibility of MDA as an indicator for disease progression. MethodsA total of 263 patients with HBV infection who underwent liver biopsy in The First Affiliated Hospital of Guangxi Medical University from April 2010 to April 2024 were included， and their clinical data were collected. According to the results of pathological examination， they were divided into non-significant fibrosis group （F<2） with 126 patients and significant fibrosis group （F≥2） with 137 patients. The correlation of MDA and FIB-4 with liver fibrosis degree was analyzed， and MDA and FIB-4 were compared in terms of their accuracy in assessing significant liver fibrosis. A total of 62 patients completed follow-up， and according to the presence or absence of progression to liver cirrhosis at the last follow-up visit， they were divided into progressive group with 21 patients and non-progressive group with 41 patients； the efficacy of MDA and FIB-4 in diagnosing disease progression was analyzed and compared. The independent-samples t test was used for comparison of normally distributed continuous data between groups， and the Mann-Whitney U test was used for comparison of non-normally distributed continuous data between groups； the Kruskal-Wallis H test was used for comparison between multiple groups， and the Bonferroni method was used for further comparison between two groups. The chi-square test was used for comparison of categorical data. The Spearman’s correlation coefficient was used for correlation analysis. The Wilcoxon signed rank sum test was used for the analysis of baseline data and data at the end of follow-up， and the binary Logistic regression analysis was used to investigate the influencing factors for progression to liver cirrhosis. The receiver operating characteristic （ROC） curve was used to investigate the diagnostic efficacy of indicators， the Z-test was used for comparison of the area under the ROC curve （AUC）， and the paired chi-square test was used for comparison of the sensitivity， specificity， and accuracy of the two indicators. ResultsThe correlation coefficient between FIB-4 and liver fibrosis degree was 0.378， while the correlation coefficient between MDA and liver fibrosis degree was -0.325 （both P<0.001）. FIB-4 had an AUC of 0.688， a sensitivity of 64.96%， a specificity of 68.87%， a positive predictive value of 67.42%， a negative predictive value of 63.36%， an accuracy of 65.40%， and a cut-off value of 1.01， while MDA had an AUC of 0.653， a sensitivity of 52.55%， a specificity of 78.57%， a positive predictive value of 72.73%， a negative predictive value of 60.37%， an accuracy of 65.02%， and a cut-off value of 0.29， suggesting that compared with FIB-4， MDA had a lower sensitivity （P=0.004） and a higher specificity （P=0.001）. The progressive group had a significantly higher age than the non-progressive group at baseline （t=2.611， P=0.011）. For the progressive group， there was an increase in FIB-4 and a reduction in MDA from baseline to the end of follow-up （both P<0.001）， while the non-progressive group showed no significant changes （both P>0.05）. The multivariate Logistic regression analysis showed that aspartate aminotransferase （odds ratio ［OR］=0.940， 95% confidence interval ［CI］： 0.885‍ ‍—‍ ‍0.998， P<0.05） and MDA （OR=0.445， 95%CI： 0.279‍ ‍—‍ ‍0.710， P<0.001） were independent influencing factors for disease progression. MDA had an AUC of 0.893 and an optimal cut-off value of -0.01 in diagnosing the disease progression of liver cirrhosis. ConclusionMDA has a comparable accuracy to FIB-4 in the diagnosis of significant liver fibrosis， and MDA<-0.01 has a high accuracy in diagnosing the progression of liver fibrosis to liver cirrhosis， which can help to reduce the need for liver biopsy in clinical practice.

OBJECTIVE To build a Tibetan-language medication service platform based on “internet+” and evaluate its effect on improving medication compliance and safety of Tibetan patients with chronic disease. METHODS Medication guidance contents of commonly used drugs in the outpatient department were summarized， translated and recorded in Tibetan-language or video to form a “text-audio-video” multi-dimensional “internet+ ” Tibetan-language medication service platform. A total of 387 Tibetan outpatients with chronic disease in our hospital after the implementation of “internet+” Tibetan-language medication service platform （from January 2024 to June 2024） in our hospital were selected as the intervention group， and 387 Tibetan outpatients before the implementation （from January 2023 to June 2023） were selected as the control group. Patients in the control group received conventional window-based Chinese-language medication services， while patients in the intervention group received both conventional window-based Chinese-language medication service and “internet+ ” Tibetan-language medication service. The medication compliance of patients was evaluated using the 12-item Medication Compliance Scale. A six-level causality assessment was conducted as the principles for analyzing adverse drug reactions （ADR） set by the National Center for ADR Monitoring. Additionally， statistics were compiled on the occurrence of ADR that were assessed as “definite”“probable” or “possible” in the causality assessment. RESULTS The proportion （31.0%） of patients with good medication compliance and compliance scores [39.0 （37.0，42.0）] of patients in the intervention group were significantly better than control group [7.0%， 21.0（19.0， 23.0）]（ P＜0.05）. There were no statistically significant differences in the incidence of various types of ADR or the overall incidence between the two groups （P＞0.05）. CONCLUSIONS The “internet+” Tibetan-language medication service platform is constructed successfully； the service can effectively improve the medication compliance of Tibetan-language patients， but its effect on improving the medication safety of patients is limited.

Lung transplantation is the ultimate therapeutic option for end-stage pulmonary diseases such as interstitial pneumonia, chronic obstructive pulmonary disease and pneumoconiosis. Currently, the shortage of allogeneic lung donors significantly limits the opportunity for end-stage lung disease patients to receive lung transplantation. In recent years, with the rapid development of biomedical engineering technologies, especially the major breakthroughs in genetic modification and cloning, xenogeneic lung transplantation has shown important potential for clinical translation. Among them, genetically modified pigs have become the most promising xenogeneic lung source due to the close similarity of organ size and physiological characteristics to humans, and the ability to perform targeted gene knockouts (such as α-Gal antigen knockout) to reduce the occurrence of hyperacute rejection. This article focuses on the research progress of porcine xenogeneic lung transplantation, systematically reviews the latest achievements and challenges in animal experiments and human trials, and introduces the technical experience accumulated by Shenzhen Third People's Hospital in the porcine-to-monkey xenogeneic lung transplantation model, in the hope of providing practical references for future research in this field.

Objective To observe the value of residual neural network(ResNet)-101-feature pyramid network(FPN)model based on CT for differentiating benign and malignant lung nodules.Methods Totally 2 040 lung nodules in 2 000 patients were retrospectively enrolled,including 1 150 benign and 890 malignant nodules.The nodules were divided into training set(n=1 632)and test set(n=408)at the ratio of 8∶2,the former including 881 benign and 751 malignant ones,while the latter including 269 benign and 139 malignant ones,respectively.Taken ResNet-101 as the backbone network,combined with FPN,a classification model was established based on chest CT,and the efficiency of this model alone and combined with evaluation of physicians for differentiating benign and malignant lung nodules were evaluated.Results Among 269 benign lung nodules in test set,ResNet-101-FPN model alone correctly diagnosed 214 nodules(214/269,79.55%),while combined with evaluation of physicians correctly diagnosed 230 ones(230/269,85.50%).For 139 malignant nodules in test set,ResNet-101-FPN model alone correctly diagnosed 124 nodules(124/139,89.21%),while combined with evaluation of physicians correctly diagnosed 131 ones(131/139,94.24%).The sensitivity,accuracy and precision of ResNet-101-FPN model combined with evaluation of physicians for distinguishing benign and malignant lung nodules were all higher,while the specificity of the combination was lower than those of ResNet-101-FPN model alone,but the differences were not significant(all P＞0.05).Conclusion ResNet-101-FPN model could be used to distinguish benign and malignant lung nodules based on CT.Combining with evaluation of physicians could improve diagnostic efficiency of this model.

Objective To observe the value of right ventricle modified myocardial performance index(RV-Mod-MPI)for evaluating maternal obstetric antiphospholipid syndrome(OAPS)involving fetal right ventricular function.Methods Forty-five pregnant women with maternal OAPS(OAPS group)and 60 healthy pregnant women(control group)were prospectively enrolled.Fetal RV-Mod-MPI was obtained with tricuspid and pulmonary valve flow images by applying pulsed wave Doppler(PW).Late pregnancy conditions and data of newborns after delivery were recorded.The indexes were compared between groups.Receiver operating characteristic curve was drawn,and the area under the curve(AUC)was used to assess the efficacy of fetal RV-Mod-MPI for predicting adverse pregnancy outcomes in OAPS group.Results Compared with those in control group,OAPS group had higher fetal RV-Mod-MPI values,lower newborn birth weight and lower Apgar score at 1 min after birth,as well as higher probability of adverse pregnancy outcomes(all P＜0.05).The AUC of fetal RV-Mod-MPI for predicting adverse pregnancy outcome in OAPS group was 0.726.Conclusion RV-Mod-MPI could be used to evaluate maternal OAPS involving fetal right ventricular function and predict adverse pregnancy outcomes.

Objective:To assess respondents' understanding of the items in the Neck Dissection Impairment Index (NDII) through cognitive interviews and to revise the items accordingly.Methods:Totally 30 postoperative neck dissection patients returning for follow-up at Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University from November 2023 to February 2024, were selected by purposive sampling for two rounds of cognitive interviews. Based on the interview results, the Chinese version of the NDII was revised.Results:The Chinese version of the NDII included ten items. The first round of interviews identified issues such as "incomplete expression, abstract language, and written form, " leading to revisions of five items. The second round of interviews showed that all respondents understood the revised items, and no new suggestions for modification were made.Conclusions:Cognitive interviews can improve respondents' comprehension of the Chinese version of the NDII, identify cognitive biases caused by cultural differences and improper linguistic expressions during the translation process, and enhance the understanding and acceptance of the scale's content among the target population.

Objective:To comprehensively search and summarize the evidence on critical ultrasound nursing practice training courses, with the aim of providing a basis for critical ultrasound nursing practice training.Methods:Taking the evidence-based clinical translation model of Fudan University Centre for Evidence-based Nursing as the theoretical framework, the evidence was retrieved, evaluated, and summarized to determine the evidence to be introduced into clinical practice, forming a training program for critical ultrasound nursing practice. From July to August 2023, 25 experts from 10 provinces/municipalities across the country were selected for two rounds of consultation to determine the practical training course system for critical ultrasound nursing.Results:A total of 14 articles were included, including one clinical decision, nine expert consensus, and four systematic reviews. In the two rounds of consultation, the positive coefficients of experts were 90.0% (27/30) and 92.6% (25/27), the authority coefficients of experts were 0.956 and 0.964, and the coefficients of Kendall's harmony were 0.303 and 0.350 ( P<0.01), respectively. The final practical training course system for critical ultrasound nursing included five first-level indicators, 25 second-level indicators, and 67 third-level indicators. Conclusions:Ultrasound examination is a complex skill. The construction method of the practical training course system for critical ultrasound nursing is scientific, reasonable, with strong practicality in content, which can provide reference for the development and evaluation of critical ultrasound nursing training courses.

Endothelial cells have important physiological functions and regulatory effects related to the occurrence and development of various diseases. Piezo1 is a mechanically sensitive ion channel protein, which is widely distributed in various tissues of the body and participates in the occurrence and development of various diseases. Piezo1 is highly expressed in endothelial cells and plays an important regulatory role in endothelial cell function. This article reviews the structure and function of Piezo1, the physiological function and pathological damage mechanism of endothelial cells, and the role of endothelial cell Piezo1 in various diseases, in order to understand the function and regulation mechanism of endothelial cell Piezo1, and provide new targets and strategies for the treatment of related diseases.

Objective:To explore the effect of identifying pelvic lymph nodes by different injection of indocyanine green (ICG) during fluorescent laparoscopic radical cystectomy.Methods:The data of 54 male bladder cancer patients admitted to the First Hospital of Shanxi Medical University from September 2021 to September 2022 were analyzed. Preoperative cystoscopic biopsy all revealed a pathological diagnosis of urothelial carcinoma. All patients underwent fluorescent laparoscopic radical cystectomy plus pelvic lymph node dissection.They were divided into 3 groups according to the annotated route: 6 in the medial malleolus injection group, 68(61, 73) years; 4 in the perineal injection group, 67(59, 74) years; 44 in the medial malleolus and perineum, 64(45, 78) in the combined injection group. Under general anesthesia, patients were placed in the supine position with 0.3 to 0.5 ml of subcutaneous ICG solution (2.5 mg/ml) injected from 1.0 to 1.5 h before surgery. In the medial malleolus injection group, 0.3 to 0.5 ml (0.75 mg/place) was injected at 2 cm above the medial malleolus and 0.3 to 0.5 ml (0.75 mg/place) at two symmetrical sites above the anus. Intraoperatively, 4K fluorescent laparoscopy was used to observe the color development of the injection site and lymphatic vessels in vitro, and then to observe the development of pelvic lymph nodes in vivo.Results:In 3 groups, inguinal lymph nodes were developed about 30 min after ICG injection, and 1 h later, the longest (4.5±0.3) h. The external iliac and common iliac lymph nodes, the obturatorius lymph nodes in the perineal injection group, and the inguinal, obturatorius, external iliac, internal, anterior sacral, and common iliac lymph nodes in the medial malleolar and perineal injection group. In this study, in 54 cases, the postoperative pathological examination confirmed that the removed fluorescently labeled tissue was lymph node tissue, and the lymph node detection rate was 100%. The postoperative stage was pT 2, 14, 32 pT 3 and 8 pT 4; 4 pNx, 44 pN 0, 5 pN 1and 1 pN 2. In the medial malleolar injection group, 2 patients staged pT 2, 3 stage pT 3, 1 stage pT 4; 1stage pNx stage, 4 stage pN 0 and 1 stage pN 1 stage. In the perineal injection group, 4 patients had postoperative pathological stage pT 3N 0; in the medial malleolar and perineal injection group, 12 pT 2, 25 and 7 pT 3; 3 pNx, 36 pN 0, 4 pN 1 and 1pN 2. Conclusions:ICG injection through the perineum and subcutaneous labeling of pelvic lymph nodes, and the simple malleolus or perineal injection can not completely develop the pelvic lymph nodes. The combined injection could fully develop the pelvic lymph nodes, which may accurately guide the operator to locate, identify and remove pelvic lymph nodes.

Objective To explore the epidemiological characteristics and cost structure of hospitalized patients with acute exacerbation of chronic obstructive pulmonary disease(AECOPD)in a tertiary comprehensive hospital in Xi'an from 2014 to 2023.Methods The first page information of AECOPD inpatients in a hospital from January 2014 to December 2023 was col-lected(n=6 748),and the distribution of their demographic characteristics and clinical characteristics as well as the composition of hospitalization expenses were retrospectively analyzed,and the structural change degree was used to analyze the structural change of hospitalization expenses in different years.Results AECOPD patients diagnosed and hospitalized accounted for 4.81 ‰ of all hospitalized patients in this institution from 2014-2023,the proportion of AECOPD inpatients showed a continuous downward trend during 10 years(x2=1 083.351,P＜0.001);The distribution of gender,occupation,medical payment meth-ods,and sources of AECOPD inpatients in different years showed statistical differences(P＜0.05);There is a statistical differ-ence in the seasonal distribution of AECOPD inpatients in different years(x2=157.328,P＜0.001);There is a statistical difference in the average length of hospital stay among AECOPD inpatients in different years(x2=83.463,P＜0.001);There were statistically significant differences in the proportion of hospitalizations,admission conditions,comorbidities or complications,history of drug allergies,and readmission plans among AECOPD patients in different years(P＜0.05);There is a statistical difference in the outcomes of hospitalized AECOPD patients in different years(x2=153.367,P＜0.001);The average hospital-ization cost of AECOPD patients gradually increased from 2014-2016,and gradually decreased from 2016-2023(P＜0.01);The hospitalization expenses of AECOPD patients in different years are mainly based on drug expenses and diagnostic expenses;The overall degree of structural change(DSV)of average hospitalization expenses for AECOPD patients from 2014-2022 was 41.62％,with the highest DSV of hospitalization expenses in 2012-2013(22.69％)and the lowest DSV in 2017-2018(4.23％);The proportion of drug expenses in the average hospitalization cost of AECOPD patients continued to decline,while diagnostic expenses,hygiene material expenses,medical service expenses,and nursing expenses showed an overall increasing trend from 2014-2023.Conclusion The proportion and mortality rate of hospitalized AECOPD patients have shown an overall downward trend in the past 10 years;The proportion of hospitalized AECOPD patients in the age group of 70-79 is the highest,mainly distributed in winter;The overall average hospitalization cost over the past 10 years has shown a downward trend,with drug and diagnostic expenses as the main components.Drug expenses have been decreasing year by year,while diagnostic expen-ses have been increasing year by year.This indicates that medical policy reform plays a significant role in optimizing the hospitali-zation cost structure and controlling unreasonable cost growth.