Objective To investigate the protective effects of mitochondrial preconditioning in pericytes(PC)against pulmonary vascular leakage in septic rats.Methods ① 128 specific-pathogen-free SD rats(equal gender,200±20 g)were randomized into:Sham group(postoperative tail vein injection of 0.5 mL saline),Sepsis(Sep)group(CLP+saline),PC group(CLP+untreated PC:106 cells/rat),and Mito-PC group(CLP+PC preconditioned with 2 μg mitochondria/104 cells for 12 h).Assessments included:PC lung colonization(flow cytometry),pulmonary barrier function(Evans blue assay),lung histopathology(HE staining),serum organ injury markers[cTnT(cardiac),urea/creatinine(renal)],and inflammatory cytokines(TNF-α,IL-6).② MSC-derived mitochondria were validated by electron microscopy/flow cytometry;primary retinal PCs from weaned SD rats were purity-verified(confocal microscopy).In vitro groups:Control(PC),Mito-PC,PC+H2O2(0.5 μmol/L,4 h),and Mito-PC+H2O2.Antioxidant capacity was assessed via pentose phosphate pathway(PPP)activity,NADPH levels,G6PD activity,and NADP+/NADPH ratio.Results① Compared with Sham,Sep group showed significant increase in pulmonary leakage(Evans blue P<0.05),severe lung injury,elevated serum markers(TNF-α,IL-6,cTnT,urea,creatinine all P<0.05),0％72 h survival.PC group showed partial improvement(P<0.05).Mito-PC group demonstrated significant reduction in vascular leakage(P<0.05 vs PC group),improved histopathology and organ function(P<0.05),attenuated inflammation(P<0.05),higher 72 h survival rate(P<0.05).② Mitochondrial preconditioning significantly enhanced PPP activation and NADPH-mediated antioxidative capacity,Mito-PC+H2O2 vs PC+H2O2 showed improved cell viability(P<0.05),Mito-PC vs PC showed increased G6PD activity(P<0.05),decreased NADP+/NADPH ratio(P<0.05).Conclusion Mitochondrial preconditioning potentiates pericyte-mediated protection against sepsis-induced pulmonary vascular leakage through enhanced pentose phosphate pathway activity.Mitochondrial preconditioning potentiates pericyte-mediated protection against sepsis-induced pulmonary vascular leakage through enhanced pentose phosphate pathway activity.

Objective To assess the incidence of contrast-induced nephropathy(CIN)in patients with chronic thromboembolic pulmonary hypertension(CTEPH)after receiving balloon pulmonary angioplasty(BPA),and to evaluate the effect of the contrast agents on renal function.Methods A total of 143 CTEPH patients,who received BPA at the China-Japan Friendship Hospital of China from December 2018 to May 2022,were enrolled in this study.The clinical data,hemodynamic indicators,and serum creatinine(SC)concentrations within one week before and 48-72 h after BPA were collected.The estimated glomerular filtration rate(eGFR)was calculated according to the Modification of Diet in Renal Disease(MDRD)formula.The SC concentration and eGFR changes before and after each BPA procedure were compared.The incidence of CIN and its risk factors were evaluated,and the changes in hemodynamics,SC and eGFR after the initial and last time of BPA treatment were analyzed.Results A total of 192 BPA procedures were performed in 115 CTEPH patients,including 88 BPA procedures in males and 103 BPA procedures in females.The mean amount of contrast agent used for each BPA was(145.58±47.26)mL.After BPA,12 patients developed 13 times of CIN,with an incidence of 6.8％.There was no significant differences(P＞0.05)in the baseline characteristics and SC concentration before BPA between CIN patients and non-CIN patients.In terms of the hemodynamic indexes,the mixed venous oxygen saturation(SvO2)in CIN patients was significantly lower than that in non-CIN patients(58.58％±10.38％vs.66.15％±8.02％,P=0.002),and no statistically significant differences(P＞0.05)in the other hemodynamic indexes existed between CIN group and non-CIN group.No statistically significant differences in SC concentration and eGFR existed before and after each BPA procedure.In patients who had received several BPA procedures,significant improvements in the SC[(78.09±18.760)μmol/L vs.(82.26±21.37)μmol/L,P＜0.001]and eGFR[(86.08±21.22)mL/(min·1.73 m2)vs.(82.07±22.05)mL/(min·1.73 m2),P=0.007]was achieved when compared with their baseline values.Conclusion CTEPH patients may develop CIN after receiving BPA treatment.After receiving several BPA treatments the patient's clinical symptoms and hemodynamics can be improved,and the patient's renal function is also significantly improved.

Objective:To analyze the eye lens dose and annual effective dose to interventional radiation workers in some hospitals of Xinxiang city from 2020 to 2022, and to ascertain the dose to interventional radiation workers.Methods:By using TLDs, the eye lens dose Hp(3) and annual effective dose Hp(10) were monitored for three consecutive years in six hospitals in Xinxiang city. The lens doses and annual effective doses to intervention radiation workers in different years in different-level hospitals and departments were analyzed. Results:From 2020 to 2022, a total of 117 people were monitored. The left eye lens dose range was 0.12-164.24 mSv, and the right eye lens dose range was 0.07-51.64 mSv. The average annual dose was 8.56 mSv for left eye lens and 4.49 mSv for right eye lens The average annual dose distribution in the MDL-5 mSv range for the left and right eye lens was 60.68% and 73.50%, respectively. 9.41% (11 people) of the left eye lens doses exceeded 20 mSv. The annual effective doses range was 0.11-31.27 mSv, with average annual dose of 2.56 mSv. The proportion of average annual effective doses mainly distributed in the range of MDL to 1.25 mSv was 52.14%, with 2.56% annual effective dose exceeding 20 mSv. There was no significant difference in left and right eye lens dose and annual effective dose between the tertiary hospitals and the secondary hospitals in three years ( P>0.05). Compared with different departments, the cumulative per capita dose in three years was statistically significant (left eye H=11.42, right eye H=13.72, annual effective dose H=25.94, P<0.05). The lens dose and annual effective dose in neurology department were lower than those in cardiology department and comprehensive intervention department ( Zcardiology department=-3.33, -3.78, -4.83, P<0.05; Zcomprehensive intervention department=-2.71, -2.63, -4.39, P<0.05). Conclusions:Most of the annual equivalent dose and annual effective dose to eye lens of the interventional radiation workers in Xinxiang city meet the national limits, but some of them have higher doses and exceed the national limits. It is suggested that the routine and continuous monitoring of eye lens doses to interventional radiologists should be strengthened while routine monitoring of annual effective dose, and attention should be paid to the eye lens and annual effective dose to interventional radiologists in secondary hospitals to improve the awareness of protection.

With the optimization of surgical technologies and postoperative management regimens, the number of lung transplantation has been significantly increased, which has become an important treatment for patients with end-stage lung disease. However, due to the impact of comprehensive factors, such as bronchial ischemia and immunosuppression, the incidence of airway stenosis after lung transplantation is relatively high, which severely affects postoperative survival and quality of life of lung transplant recipients. In recent years, with the improvement of perioperative management, organ preservation and surgical technologies, the incidence of airway stenosis after lung transplantation has been declined, but it remains at a high level. Early diagnosis and timely intervention play a significant role in enhancing clinical prognosis of patients with airway stenosis. In this article, the general conditions, diagnosis, treatment and prevention of airway stenosis after lung transplantation were reviewed, aiming to provide reference for comprehensive management of airway stenosis after lung transplantation and improving clinical prognosis of lung transplant recipients.

Objective To explore the influencing factors of the career plateau among hospital administrators,to provide scientific reference for enhancing the quality of hospital management and operation.Methods The interview data were analyzed by grounded theoretical research methods.It conducted semi-structured interviews with 22 tar-get objects and conducted qualitative research on the influencing factors of hospital administrators'career plateau with the help of NVivo 11.0 software.Results After a three-level coding,114 initial concepts,30 subcategories,10 main categories,and 3 core categories were summarized.A theoretical model was developed,encompassing three dimensions:aggravating factors,dissipating factors,and convertible factors.Conclusion The career plateau of hospi-tal administrators is affected by a complex interplay of aggravating,dissipating and convertible factors.Hospitals need to provide regular vocational training to cultivate organizational loyalty for their employees.Hospital administra-tors should engage in proactive career planning and skill diversification.and the government should coordinate the es-tablishment of links between hospitals and the external system to promote the openness and connection of the healthcare system to the outside world.

Objective To explore the influencing factors of the career plateau among hospital administrators,to provide scientific reference for enhancing the quality of hospital management and operation.Methods The interview data were analyzed by grounded theoretical research methods.It conducted semi-structured interviews with 22 tar-get objects and conducted qualitative research on the influencing factors of hospital administrators'career plateau with the help of NVivo 11.0 software.Results After a three-level coding,114 initial concepts,30 subcategories,10 main categories,and 3 core categories were summarized.A theoretical model was developed,encompassing three dimensions:aggravating factors,dissipating factors,and convertible factors.Conclusion The career plateau of hospi-tal administrators is affected by a complex interplay of aggravating,dissipating and convertible factors.Hospitals need to provide regular vocational training to cultivate organizational loyalty for their employees.Hospital administra-tors should engage in proactive career planning and skill diversification.and the government should coordinate the es-tablishment of links between hospitals and the external system to promote the openness and connection of the healthcare system to the outside world.

Objective To explore the influencing factors of the career plateau among hospital administrators,to provide scientific reference for enhancing the quality of hospital management and operation.Methods The interview data were analyzed by grounded theoretical research methods.It conducted semi-structured interviews with 22 tar-get objects and conducted qualitative research on the influencing factors of hospital administrators'career plateau with the help of NVivo 11.0 software.Results After a three-level coding,114 initial concepts,30 subcategories,10 main categories,and 3 core categories were summarized.A theoretical model was developed,encompassing three dimensions:aggravating factors,dissipating factors,and convertible factors.Conclusion The career plateau of hospi-tal administrators is affected by a complex interplay of aggravating,dissipating and convertible factors.Hospitals need to provide regular vocational training to cultivate organizational loyalty for their employees.Hospital administra-tors should engage in proactive career planning and skill diversification.and the government should coordinate the es-tablishment of links between hospitals and the external system to promote the openness and connection of the healthcare system to the outside world.

Objective To explore the influencing factors of the career plateau among hospital administrators,to provide scientific reference for enhancing the quality of hospital management and operation.Methods The interview data were analyzed by grounded theoretical research methods.It conducted semi-structured interviews with 22 tar-get objects and conducted qualitative research on the influencing factors of hospital administrators'career plateau with the help of NVivo 11.0 software.Results After a three-level coding,114 initial concepts,30 subcategories,10 main categories,and 3 core categories were summarized.A theoretical model was developed,encompassing three dimensions:aggravating factors,dissipating factors,and convertible factors.Conclusion The career plateau of hospi-tal administrators is affected by a complex interplay of aggravating,dissipating and convertible factors.Hospitals need to provide regular vocational training to cultivate organizational loyalty for their employees.Hospital administra-tors should engage in proactive career planning and skill diversification.and the government should coordinate the es-tablishment of links between hospitals and the external system to promote the openness and connection of the healthcare system to the outside world.

Objective To explore the influencing factors of the career plateau among hospital administrators,to provide scientific reference for enhancing the quality of hospital management and operation.Methods The interview data were analyzed by grounded theoretical research methods.It conducted semi-structured interviews with 22 tar-get objects and conducted qualitative research on the influencing factors of hospital administrators'career plateau with the help of NVivo 11.0 software.Results After a three-level coding,114 initial concepts,30 subcategories,10 main categories,and 3 core categories were summarized.A theoretical model was developed,encompassing three dimensions:aggravating factors,dissipating factors,and convertible factors.Conclusion The career plateau of hospi-tal administrators is affected by a complex interplay of aggravating,dissipating and convertible factors.Hospitals need to provide regular vocational training to cultivate organizational loyalty for their employees.Hospital administra-tors should engage in proactive career planning and skill diversification.and the government should coordinate the es-tablishment of links between hospitals and the external system to promote the openness and connection of the healthcare system to the outside world.

Objective To explore the influencing factors of the career plateau among hospital administrators,to provide scientific reference for enhancing the quality of hospital management and operation.Methods The interview data were analyzed by grounded theoretical research methods.It conducted semi-structured interviews with 22 tar-get objects and conducted qualitative research on the influencing factors of hospital administrators'career plateau with the help of NVivo 11.0 software.Results After a three-level coding,114 initial concepts,30 subcategories,10 main categories,and 3 core categories were summarized.A theoretical model was developed,encompassing three dimensions:aggravating factors,dissipating factors,and convertible factors.Conclusion The career plateau of hospi-tal administrators is affected by a complex interplay of aggravating,dissipating and convertible factors.Hospitals need to provide regular vocational training to cultivate organizational loyalty for their employees.Hospital administra-tors should engage in proactive career planning and skill diversification.and the government should coordinate the es-tablishment of links between hospitals and the external system to promote the openness and connection of the healthcare system to the outside world.