Objective In order to know first aid awareness and training needs of non-medical college students in Shiyan city,and to provide the basis for an efficient first-aid training.Methods A total of 1063 non-medical colleges in Shiyan city were surveyed by random sampling method.Results 64.61％ of students awared of their own lack of knowledge of first aid,only 3.8 ％ feel rich;based on the first aid knowledge they obtained at present,46.92 ％ did not hesitate to rescue the stranger.After receiving systematic training,the rate rise to 78.9 ％,68.09 ％ of students worried about their lack of first aid skills were the biggest obstacle for them to implement of rescue;98.3％ of the students asked to undergo first aid training,92.27％ of students like approach first aid skills was hands-on model.33.03％ of students believe that medical schools were the best institutions to undertake emergency training,23.46％ of students chose the hospital.Conclusion Non-medical college students in Shiyan city have a bad awareness for firstaid knowledge and a strong desire for training.It is necessary that relevant departments will formulate targeted training programs to improve college students' first-aid response and improve regional emergency level.

Objective To compare the value of 7 different thyroid imaging reporting and data systems(TI-RADS)for differentiating benign and malignant thyroid nodules under the context of Hashimoto thyroiditis(HT).Methods A total of 338 thyroid nodules in 200 HT patients were enrolled,including 167 benign and 171 malignant ones.Kwak-TIRADS,American Thyroid Association(ATA)guideline,American Association of Clinical Endocrinologists(A ACE)/American College of Endocrinology(ACE)/Associazione Medici Endocrinologi(AME)guideline,K-TIRADS of Korean Society of Thyroid Radiology,EU-TIRADS of European Thyroid Association,American College of Radiology(ACR)-TIRADS and 2020 Chinese guidelines for malignant risk stratification of thyroid nodules by ultrasound proposed by the superficial organs and vessels group of the ultrasound medicine branch of the Chinese Medical Association(C-TIRADS)were used for grading of benign and malignant thyroid nodules.Taken pathological results as gold standards,the diagnostic efficacy of 7 kinds of TI-RADS were analyzed.Results The sensitivity of Kwak-TIRADS,ATA guideline,A ACE/ACE/AME guideline,K-TIRADS,EU-TIRADS,ACR-TIRADS and C-TIRADS for differentiating benign and malignant thyroid nodules under the context of HT was 97.08％,98.25％,99.42％,95.91％,99.42％,90.06％and 99.42％,respectively,the specificity was 88.02％,83.23％,82.04％,88.02％,82.04％,86.83％and 84.43％,respectively,and the area under the curve(AUC)was 0.946,0.913,0.907,0.934,0.909,0.916 and 0.960,respectively.The sensitivity of C-TIRADS,EU-TIRADS and A ACE/ACE/AME guideline were all higher than that of K-TIRADS and ACR-TIRADS(all P＜0.05),and the specificity of Kawk-TIRADS and K-TIRADS were both higher than that of C-TIRADS,ATA guideline,EU-TIRADS and AACE/ACE/AME guideline(all P＜0.05),while AUC of C-TIRADS and Kawk-TIRADS were both higher than that of the rest 5 kinds of TI-RADS(all P＜0.05).According to Kwak-TIRADS,ATA guideline,AACE/ACE/AME guideline,K-TIRADS,EU-TIRADS,ACR-TIRADS and C-TIRADS,the malignant rate of different grades nodules identified with the same TI-RADS were significant different(all P＜0.05),which all raised with the increase of TI-RADS grade.Conclusion C-TIRADS and Kawk-TIRADS had better value for differentiating benign and malignant thyroid nodules under the context of HT,among which C-TIRADS had higher sensitivity and Kawk-TIRADS had higher specificity.

BACKGROUND:Although traditional therapies,including drugs and surgery,cannot repair the damaged myocardial tissue,the mortality rate of myocardial infarction remains high.Stem cells provide the possibility to solve this problem due to their self-renewal and multi-directional differentiation potential. OBJECTIVE:To analyze the research progress of stem cell therapy for myocardial infarction in recent ten years by bibliometric analysis. METHODS:The related articles on stem cells and myocardial infarction published in SCI-E and SSCI from January 1,2012 to December 1,2022 in the Web of Science database were searched.EXCEL,CiteSpace and VOSviewer software were used to make statistical and visualization analyses of the data such as the number of publications,authors,institutions,journals,countries and keywords. RESULTS AND CONCLUSION:A total of 3 210 core articles were published,and the total number increased year by year.hausenloy,derek j.is the author with the largest number of publications,China is the country with the largest number of publications,and the Fourth Military Medical University is the institution with the largest number of publications.The research hotspots in this field are changing from cell experiments and animal experiments to clinical trials.In the past ten years,research in this field has been highly popular and still has great development prospects.It is necessary to promote international and inter-agency exchange and learning,and further explore the role of stem cells in the treatment of myocardial infarction.