Hip fracture in the elderly is characterized by high incidence, high disability rate, and high mortality and has been recognized as a public health issue threatening their health. Surgery is the preferred choice for the treatment of elderly patients with hip fracture. However, lower extremity deep venous thrombosis (DVT) has an extremely high incidence rate during the perioperative period, and may significantly increase the risk of patients′ death once it progresses to pulmonary embolism. In response to this issue, the clinical guidelines and expert consensuses all emphasize active application of comprehensive preventive measures, including basic prevention, physical prevention, and pharmacological prevention. In this prevention system, basic prevention is the basis of physical and pharmacological prevention. However,there is a lack of unified and definite recommendations for basic preventive measures in clinical practice. To this end, the Orthopedic Nursing Professional Committee of the Chinese Nursing Association and Nursing Department of the Orthopedic Branch of the China International Exchange and Promotive Association for Medical and Health Care organized relevant nursing experts to formulate Expert consensus on perioperative basic prevention for lower extremity deep venous thrombosis in elderly patients with hip fracture ( version 2024) . A total of 10 recommendations were proposed, aiming to standardize the basic preventive measures for lower extremity DVT in elderly patients with hip fractures during the perioperative period and promote their subsequent rehabilitation.

Objective To compare the morphology differences in small shadows of occupational pneumoconiosis (hereinafter referred to as "pneumoconiosis") between computed tomography (CT) and digital radiography (DR) imaging. Methods A total of 1 010 pneumoconiosis patients were selected as the research subjects using a judgment sampling method. Chest DR imaging and CT imaging were performed on patients, and the differences in small shadow morphology between the two images were compared. Results In both DR and CT images of patients, circular small shadows identified as p, q, and r shapes accounted for 76.2%, 11.5%, and 1.3%, respectively, while irregular small shadows were identified in 1.8% of cases. There was medium high consistency between DR and CT in detecting these four types of small shadow morphology (Kappa=0.72, P<0.01). The detection rate of irregular small shadows (including interlobular septal thickening, ground-glass opacity, and/or centrilobular emphysema) by CT images was 54.0% (545/1 010), with 88.6% (483/545) of these cases also showing small circular shadows. Irregular small shadows in CT images were mostly identified as p small circular shadows in DR images, accounting for 88.8% (484/545). The results of DR and CT images for p/p, p/q, q/p, q/q, q/r, r/q and r/r in small circular shadows showed medium high consistency (Kappa =0.52, P<0.01). Conclusion The results of CT and DR imaging for pneumoconiosis with small shadow were of medium high consistency, with CT demonstrating advantages in detecting irregular small shadow morphology of pneumoconiosis. CT images can be used to describe the shape of circular small shadow as DR images, and irregular small shadow can be described as interlobular septal thickening, ground-glass opacity, and/or centrilobular emphysema.

Objective To evaluate the reliability of nailfold videocapillaroscopy (NVC) in patients with Raynaud's phenomenon (RP). Methods A total of 302 participants with RP at Sichuan Provincial People's Hospital were examined using NVC with a 200× magni-fication to acquire images from six digits (the second,third,and fourth fingers of both hands) of patients with RP,and 3805 NVC images were obtained. Five rheumatologists assessed the obtained NVC images separately,using the European League against Rheumatism Study Group on Microcirculation in Rheumatic Diseases standardized capillaroscopy evaluation chart. Two months later,the same rheumatolo-gists re-evaluated one-fifth of the randomly selected patients. The intraclass correlation coefficient was used to analyze the inter-and intra-observer reliability. Results When evaluating NVC images,the inter-observer and intra-observer reliabilities of the five researchers were good,and the intraclass correlation coefficient values were 0.724-0.930 (P<0.001) and 0.841-0.939 (P<0.001),respectively. In the subgroup analysis of different patterns of NVC images,four out of five investigators showed moderate to good inter-observer agreement,and only one beginner had poor agreement in identifying normal,non-specific,and early patterns. Conclusion Rheumatologists with dif-ferent experience levels showed good agreement in evaluating NVC images in patients with RP,suggesting that NVC examination has good reliability and reproducibility.

Objective To evaluate the reliability of nailfold videocapillaroscopy (NVC) in patients with Raynaud's phenomenon (RP). Methods A total of 302 participants with RP at Sichuan Provincial People's Hospital were examined using NVC with a 200× magni-fication to acquire images from six digits (the second,third,and fourth fingers of both hands) of patients with RP,and 3805 NVC images were obtained. Five rheumatologists assessed the obtained NVC images separately,using the European League against Rheumatism Study Group on Microcirculation in Rheumatic Diseases standardized capillaroscopy evaluation chart. Two months later,the same rheumatolo-gists re-evaluated one-fifth of the randomly selected patients. The intraclass correlation coefficient was used to analyze the inter-and intra-observer reliability. Results When evaluating NVC images,the inter-observer and intra-observer reliabilities of the five researchers were good,and the intraclass correlation coefficient values were 0.724-0.930 (P<0.001) and 0.841-0.939 (P<0.001),respectively. In the subgroup analysis of different patterns of NVC images,four out of five investigators showed moderate to good inter-observer agreement,and only one beginner had poor agreement in identifying normal,non-specific,and early patterns. Conclusion Rheumatologists with dif-ferent experience levels showed good agreement in evaluating NVC images in patients with RP,suggesting that NVC examination has good reliability and reproducibility.

Objective:To establish a risk prediction model for prolonged mechanical ventilation in adult heart transplant recipients.Methods:This study used structured language to query hospital electronic medical record systems. From January 2004 to December 2021, 957 adult recipients undergoing cardiac transplantation at Fuwai Hospital of the Chinese Academy of Medical Sciences were selected as the study subject using a convenience sampling. This study collected basic information, past history, preoperative blood creatinine, preoperative total bilirubin, preoperative ventilation assistance, and intraoperative donor heart cold ischemia time. The enrolled patients were divided into a training group ( n=717) and a validation group ( n=240) in a ratio of 3∶1. Based on the training group data, a risk prediction model was constructed using two-way stepwise Logistic regression. The prediction performance of the model was evaluated using the area under the receiver operating characteristic (ROC) curve, sensitivity and specificity based on the validation group data. Results:A total of 957 adult heart transplant recipients were included, and 18.39% (176/957) of them experienced prolonged mechanical ventilation (>24 hours) after surgery. Based on the model established by the training group data, 7 independent risk factors for prolonged mechanical ventilation after surgery were clarified, including age ≥ 60 years old ( OR=1.820), history of blood transfusion ( OR=5.237), previous cardiac surgery ( OR=2.826), preoperative total bilirubin≥ 34.2 μmol/L ( OR=1.861), preoperative ventilator assistance ( OR=9.421), preoperative intra-aortic balloon pump assistance ( OR=1.826), intraoperative donor heart cold ischemia time≥ 360 min ( OR=2.093) ( P<0.05). The area under the curve of the model was 0.676 (95% confidence interval was 0.581 to 0.770), with a sensitivity of 0.500, and a specificity of 0.796. Conclusions:Based on the data of adult heart transplant recipients from a single center, this study established a relatively simple and objective risk prediction model that can predict the prolonged mechanical ventilation in adult heart transplant recipients, and has good clinical value.

Objective:To construct a bundle nursing program to prevent mechanical circulatory support infection after adult heart transplantation.Methods:This study followed the process of formulating the bundle nursing program, determined the theme of bundle nursing and established a multidisciplinary support system. Based on literature research and theoretical analysis, a preliminary strategy draft was prepared. Delphi method was used to conduct two rounds of expert consultation for 16 experts, and calculate the weight of each item. Combined with expert opinions and pilot feedback, the final draft of bundle nursing program for prevention of mechanical circulation support infection after adult heart transplantation was finally formed.Results:The final bundle nursing program for prevention of mechanical circulation support infection after adult heart transplantation included 4 first-level indexes and 7 second-level items, and the importance and clinical applicability of each item were more than 3.50. The positivity of the experts was high, the authority coefficient was 0.73 and 0.87, and the coordination coefficient was 0.216 and 0.125, respectively ( P<0.05) . Conclusions:The bundle nursing program constructed in this study to prevent mechanical circulation support infection after adult heart transplantation is scientific and practical. Further confirmatory research will be carried out to provide evidence for the prevention of mechanical circulation support infection after heart transplantation.

Objective:To explore the related factors of nutritional status in hospitalized elders with mental disorders.Methods:A total of 584 elders with mental disorders admitted to Beijing Huilongguan Hospital from June 2020 to June 2021 were selected by convenience sampling method. General questionnaire, Barthel Index Scale, Frailty Phenotype, Mini Nutritional Assessment, Simple Physical Fitness Scale (SPFS) , Family Function Assessment Scale were collected. Univariate analysis and Pearson correlation analysis were used to analyze the related factors of patients' nutritional status. Multivariate correspondence analysis was performed for significant variables in univariate analysis.Results:The incidence of malnutrition in hospitalized elders with mental disorders was 51.88% (303/584) , and patients were divided into three groups according to nutritional status, including good nutritional status group, risk of malnutrition group, and malnutrition group for statistical analysis. Univariate analysis showed that there were significant differences in age, diagnosis, frailty, smoking, drinking, BMI, Barthel score, SPPB, family function among three groups ( P<0.01) . Correlation analysis showed that BMI ( r=0.144, P<0.01) , Barthel index ( r=0.087, P<0.05) , family social function ( r=0.257, P<0.01) and nutritional status were positively correlated with nutritional status, while age ( r=-0.252, P<0.01) , frailty ( r=-0.216, P<0.01) were negatively correlated with nutritional status. Multiple correspondence analysis showed that dementia, over 81 years old, frailty, impaired activities of daily living, and family dysfunction were the related factors of malnutrition; schizophrenia, 71-80 years old, pre-debility, good ability of daily living were the associated factors of good nutritional status; bipolar disorder, 60-70 years old were the associated factors of malnutrition. Conclusions:The health supervision and nutrition screening of hospitalized elders with mental disorders should be strengthened, and targeted nutritional intervention strategies should be adopted for patients with different mental disorders, so as to reduce the health problems.

COVID-19 pandemic caused by SARS-CoV-2 infection severely threatens global health and economic development. No effective antiviral drug is currently available to treat COVID-19 and any other human coronavirus infections. We report herein that a macrolide antibiotic, carrimycin, potently inhibited the cytopathic effects (CPE) and reduced the levels of viral protein and RNA in multiple cell types infected by human coronavirus 229E, OC43, and SARS-CoV-2. Time-of-addition and pseudotype virus infection studies indicated that carrimycin inhibited one or multiple post-entry replication events of human coronavirus infection. In support of this notion, metabolic labelling studies showed that carrimycin significantly inhibited the synthesis of viral RNA. Our studies thus strongly suggest that carrimycin is an antiviral agent against a broad-spectrum of human coronaviruses and its therapeutic efficacy to COVID-19 is currently under clinical investigation.

Objective? To discuss the effects of creatiue story therapy of the inpatients with moderate dementia. Methods? From January 2017 to June 2018, a total of 40 patients with moderate dementia from a ClassⅢ Grade A psychiatric hospital were selected as the research subjects. All the subjects were randomly divided into experimental group and control group, with 20 cases in each group. The control group was given routine nursing, while the experimental group received creatiue story therapy on the basis of routine nursing. The intervention lasted for 7 weeks. The Mini-mental State Examination (MMSE), Chinese Version of the Cohen-Mansfield Inventory (CMAI-CV) and Chinese Version of the Cornell Scale for Depression in Dementia (CSDD-CV) were applied to compare the effects of the two groups. Results? There was no significant difference in the total score of the MMSE scale between the two groups after 7 weeks (P＞0.05). The total score of CMAI-CV was (118.15±8.21) and the score of CSDD-CV was (4.01±1.34) in the experimental group after intervention, where were both lower than the control group, and the differences were statistically significant (t=-4.417,-6.535;P＜0.01). Conclusions? Creatiue story therapy can effectively improve cognitive function, reduce aggressive behaviors and improve depression in patients with moderate dementia.

[Objective] To investigate the effects of the bioactive constituents of green tea polyphenols epigallocatechin gallate (EGCG) on low density lipoprotein receptor (LDLR) function of HepG2 cells.[Methods] The optimal concentration and cell proliferation of HepG2 cells were determined by CCK8 assay,and Western blotting was used to determine LDLR and PCSK9 protein levels,respectively,and LDL uptake in HepG2 cells was detected by fluorescence microscope.[Results] EGCG elevated LDLR protein expression,reduced PCSK9 protein expression and promoted LDL uptake in HepG2 cells.[Conclusion] EGCG may increase LDLR abundance by down-regulating PCSK9 protein and attenuating LDLR protein degradation,which providing a new approach for lipid lowering therapy.