Objective To investigate right ventricular(RV) dyssynchrony in patients with pulmonary hypertension(PH)by strain imaging.Methods Sixty PH patients were divided into three groups according to the pulmonary artery systolic pressure(PASP),20 healthy volunteers served as control group.RV structures parameters included RV end-diastolic area(RVEDA),end-systolic area(RVESA),the ratio of RV diameter and LV diameter(RVTD/LVTD).RV function parameters included RV fractional area change (RVFAC)and Tei index.RV strain parameters included the maxmal differences of the peak systolic strain(Max-ΔPST)and the maxmal differences of the time to peak systolic strain(Max-ΔT_(Q-S))of each segment.Results Compared with control group, Max-ΔT_(Q-S) and Max-ΔPST of PH groups were significantly larger (P<0.01).Max-ΔT_(Q-S) had strong correlations with PASP and RV structure and function parameters(P<0.01).Max-ΔPST had good correlations with PASP and Tei-index(P<0.05,P<0.01).Conclusions PH patients exhibit right ventricular dyssynchrony which correlates with right ventricular function and structure parameters.Right ventricular dyssynchrony parameters could evaluate right ventricular function in PH patients early by strain imaging.

Objective:To study the structure of medical students' professional psychological quality and to compile a questionnaire.Methods:Based on the grounded theory research and semi-structured interviews, the concept and structure of medical students' professional psychological quality were constructed, and the questionnaire of professional psychological quality of medical students with qualified reliability and validity was compiled. The medical students from multiple universities in Sichuan were tested by convenient sampling. A total of 300 valid questionnaires were collected for item analysis, 400 for correlation analysis and exploratory factor analysis, and 400 for confirmatory factor analysis and reliability analysis. SPSS 25.0 was used to perform correlation analysis, exploratory factor analysis, and reliability analysis, and AMOS 26.0 was used to make confirmatory factor analysis.Results:The questionnaire of medical students' professional psychological quality consisted of three subscales: professional psychological personality, professional psychological ability and professional identity, consisting of 13 secondary factors and 61 items. The total Cronbach's α=0.947, the internal consistency coefficients of the total questionnaire and the three subscales were from 0.845 to 0.947, and the correlation coefficients between the three subscales and the total questionnaire were from 0.850 to 0.869. The three factor model fitted well (GFI=0.945, AGFI=0.906, NFI=0.936, RFI=0.906, IFI=0.957, TLI=0.935, RMSEA=0.070). Conclusion:Professional psychological personality, professional psychological ability, and professional identity are the core structures of medical students' professional psychological quality. Medical students' professional psychological quality questionnaire has good content validity, structural validity and internal consistency reliability, which can be used as an effective tool to evaluate the professional psychological quality of medical students.

Lung cancer is the most common malignant tumor of the respiratory system， and its pathogenesis is still not fully understood. Despite the significant clinical efficacy achieved through treatments such as surgery， radiotherapy， chemotherapy， targeted therapy， and immunotherapy， they still come with many complications and significant adverse reactions. In recent years， numerous basic and clinical studies have confirmed the effectiveness of Chinese medicine in treating lung cancer. Chinese medicine features synergistic regulation through its multiple components， targets， pathways， and approaches. Active monomeric constituents in Chinese medicine are diverse， and their mechanisms of action are intricate， making it challenging to fully understand the mechanisms by which Chinese medicine prevents and treats lung cancer. Therefore， there is an urgent need to approach Chinese medicine intervention in lung cancer from a modern medical perspective， exploring the mechanisms of Chinese medicine intervention in lung cancer at the molecular biology and network pharmacology levels. According to traditional Chinese medicine （TCM）， the occurrence of lung cancer is predominantly attributed to factors such as deficiency of healthy Qi， presence of pathogenic factors， internal accumulation of heat-toxins， internal accumulation of phlegm-dampness， and Qi stagnation and blood stasis. Literature analysis reveals that Chinese medicine compound formulas for lung cancer predominantly include tonifying agents and heat-clearing and toxin-removing agents， such as Shashen Maidongtang， Xiaoyan prescription， and Feijinsheng prescription. The single herbs used mainly include heat-clearing， deficiency-tonifying， blood-activating， stasis-resolving， phlegm-resolving， cough-relieving， and asthma-calming categories. The use of Chinese medicine aligns with the TCM understanding of the etiology and pathogenesis of lung cancer. Studies have shown that TCM can regulate the expression of key molecules in lung cancer-related signaling pathways， such as the phosphatidylinositol 3-kinase/protein kinase B （PI3K/Akt）， nuclear factor-kappa B （NF-κB）， Wnt/β-catenin， mitogen-activated protein kinase （MAPK）， and Janus kinase/signal transducer and activator of transcription （JAK/STAT）， thereby exerting effects such as reducing lung cancer cell activity， blocking the cell cycle， inhibiting proliferation and invasion of lung cancer cells， inducing apoptosis in lung cancer cells， promoting cell autophagy， and reversing drug resistance， and intervening in the progression of lung cancer. This study systematically summarized recent research progress on how Chinese medicine monomers or formulas regulated the aforementioned signaling pathways and key protein expression to exert anti-lung cancer effects， aiming to elucidate the mechanisms by which Chinese medicine intervenes in the progression of lung cancer and provide insights and theoretical basis for further research and clinical application of Chinese medicine in lung cancer intervention.