Objective To investigate the impact of catheter ablation(CA)combined with left atrial appendage closure(one-stop procedure)on cardiac function in atrial fibrillation(AF)patients,and analyze the risk factors for late AF recurrence after one-stop pro-cedure.Methods A total of 225 patients who visited the Inner Mongolia Autonomous Region People's Hospital for AF from January 2020 to December 2023 were included,and they were divided into the one-stop procedure group(n=93)and the CA group(n=132)ac-cording to the procedure,and 55 patients with matching clinical baseline characteristics were respectively screened out at a ratio of 1:1 by the method of propensity score matching,namely the CA group(n=55)and the one-stop procedure group(n=55),and the changes in cardiac function between the two groups were compared between preoperative and 1-year postoperative periods.Risk factors for late post-operative recurrence of AF and their predictive value in the one-stop procedure group were assessed using multivariate Logistic regression analysis and receiver operating characteristic(ROC)curve.Results At 1 year postoperatively,N-terminal B-type natriuretic peptide(NT-proBNP),left atrial internal diameter(LAD),and left ventricular end-diastolic diameter(LVEDD)were significantly lower and left ventricular ejection fraction(LVEF)was significantly higher in both groups compared with the preoperative period(P＜0.05),but there was no statistically significant difference in the improvement degree of cardiac function between the two groups at 1 year postopera-tively(P＞0.05).The results of the univariate analysis showed that there were statistically significant differences in NT-proBNP,LAD,and left ventricular end-systolic diameter(LVESD)in the one-stop procedure late postoperative recurrence group compared with late postoperative non-recurrence group(P＜0.05),and the results of multivariate Logistic regression analysis showed that the preoperative NT-proBNP(OR=1.075,95％CI:1.029-1.124,P=0.001)and preoperative LAD(OR=1.222,95％CI:1.094-1.365,P＜0.001)were the risk factors for late recurrence of AF after one-stop procedure.The results of the ROC curve analysis showed that the area under the curve(AUC)of NT-proBNP,LAD,and the combination of the two in predicting late recurrence of AF after one-stop procedure were 0.788,0.772 and 0.846,respectively,with a sensitivity of 84.4％,68.8％and 87.5％,and a specificity of 68.9％,78.7％and 77.0％,respectively.Conclusion Both one-stop procedure and CA can significantly improved cardiac function in patients with AF with comparable results.Preoperative LAD enlargement and NT-proBNP elevation are independent risk factors for late recur-rence of AF after one-stop procedure,and the combination of the two can effectively improve the efficacy of AF recurrence risk assess-ment.

Objective To determine the effect of non-high-density lipoprotein cholesterol(non-HDL-C)on all-cause and cause-specific mortality in an ≥60-year-old elderly population.Methods A total of 16 642 older adults(≥60 years)were subjected from the National Health and Nutrition Examination Survey between 1999 and 2018.According to the tertile of non-HDL-C level,the par-ticipants were divided into tertile 1(＜3.15 mmol/L,n=5499),tertile 2(3.15-4.06 mmol/L,n=5499),and tertile 3 groups(＞4.06 mmol/L,n=5644).The occurrences of all-cause,cardiovascu-lar,and non-cardiovascular death were identified as the study endpoint.Cox proportional hazards regression,Kaplan-Meier survival and restricted cubic spline curve analyses were applied for sta-tistical study.Results An obvious L-shaped associations were observed in non-HDL-C level with risks for all-cause,cardiovascular,and non-cardiovascular death.After adjusting multivariable,the tertile 1 group had significantly higher risks for all-cause,cardiovascular,and non-cardiovascular death than the tertile 2 group(HR=1.123,95％CI:1.054-1.200,P=0.000;HR=1.142,95％CI:1.024-1.292,P=0.027;HR=1.113,95％CI:1.033-1.210,P=0.011).Kaplan-Meier survival analysis showed that the tertile 1 group had notably lower survival rate than the tertile 2 group and the tertile 3 group(P＜0.01).Threshold effect analysis revealed that when non-HDL-C level was lower than 3.36,3.18 and 3.59 mmol/L,respectively,the risk of all-cause,cardiovascular,and noncardiovascular mortality was increased.Conclusion In the elderly ≥60-year-old population,non-HDL-C level exhibited a L-shaped association with all-cause and cause-specific mortality,and＞3.18 mmol/L is regarded as a rational range.

Objective To analyze the occurrence and risk factors of needlestick and sharps injuries(NSIs)among oral health care workers(HCWs).Methods NSIs reported by West China Hospital of Stomatology from 2020 to 2023 were collected,and factors relevant to NSIs were analyzed.Results A total of 391 cases of NSIs were repor-ted.Only one case of injury was caused by a sterile device,while the remaining 390 cases were caused by contamina-ted devices.There were 85,107,113,and 86 cases in 2020,2021,2022,and 2023,respectively.Most NSIs oc-curred among interns(n=235,60.1％).294 cases(75.2％)of NSIs occurred among HCWs who had less than 3 years of clinical experience.The distribution of NSIs among 235 interns in different months showed that NSIs ac-counted for a relatively high proportion from April to June and July to September,and the difference was statistica-lly significant(P＜0.05).The ventral side of the left thumb was the most common site of NSIs(n=53,13.6％),followed by the ventral side of the right index finger(n=45,11.5％)and the ventral side of the left index finger(n=44,11.3％).The most common devices involved in NSIs were various types of syringe needles(n=84,21.5％),followed by various types of dental burs(n=76,19.4％)and suture needles(n=49,12.5％).Injuries mainly oc-curred during the treatment process(n=212,54.2％)and in the department of endodontics(n=86,22.0％).This study didn't find any occupational bloodborne infection case caused by NSIs.Conclusion NSIs mainly occur among inexperienced oral interns,and devices causing NSIs are related to the treatment process.

Objective To investigate the impact of catheter ablation(CA)combined with left atrial appendage closure(one-stop procedure)on cardiac function in atrial fibrillation(AF)patients,and analyze the risk factors for late AF recurrence after one-stop pro-cedure.Methods A total of 225 patients who visited the Inner Mongolia Autonomous Region People's Hospital for AF from January 2020 to December 2023 were included,and they were divided into the one-stop procedure group(n=93)and the CA group(n=132)ac-cording to the procedure,and 55 patients with matching clinical baseline characteristics were respectively screened out at a ratio of 1:1 by the method of propensity score matching,namely the CA group(n=55)and the one-stop procedure group(n=55),and the changes in cardiac function between the two groups were compared between preoperative and 1-year postoperative periods.Risk factors for late post-operative recurrence of AF and their predictive value in the one-stop procedure group were assessed using multivariate Logistic regression analysis and receiver operating characteristic(ROC)curve.Results At 1 year postoperatively,N-terminal B-type natriuretic peptide(NT-proBNP),left atrial internal diameter(LAD),and left ventricular end-diastolic diameter(LVEDD)were significantly lower and left ventricular ejection fraction(LVEF)was significantly higher in both groups compared with the preoperative period(P＜0.05),but there was no statistically significant difference in the improvement degree of cardiac function between the two groups at 1 year postopera-tively(P＞0.05).The results of the univariate analysis showed that there were statistically significant differences in NT-proBNP,LAD,and left ventricular end-systolic diameter(LVESD)in the one-stop procedure late postoperative recurrence group compared with late postoperative non-recurrence group(P＜0.05),and the results of multivariate Logistic regression analysis showed that the preoperative NT-proBNP(OR=1.075,95％CI:1.029-1.124,P=0.001)and preoperative LAD(OR=1.222,95％CI:1.094-1.365,P＜0.001)were the risk factors for late recurrence of AF after one-stop procedure.The results of the ROC curve analysis showed that the area under the curve(AUC)of NT-proBNP,LAD,and the combination of the two in predicting late recurrence of AF after one-stop procedure were 0.788,0.772 and 0.846,respectively,with a sensitivity of 84.4％,68.8％and 87.5％,and a specificity of 68.9％,78.7％and 77.0％,respectively.Conclusion Both one-stop procedure and CA can significantly improved cardiac function in patients with AF with comparable results.Preoperative LAD enlargement and NT-proBNP elevation are independent risk factors for late recur-rence of AF after one-stop procedure,and the combination of the two can effectively improve the efficacy of AF recurrence risk assess-ment.

Objective To analyze the occurrence and risk factors of needlestick and sharps injuries(NSIs)among oral health care workers(HCWs).Methods NSIs reported by West China Hospital of Stomatology from 2020 to 2023 were collected,and factors relevant to NSIs were analyzed.Results A total of 391 cases of NSIs were repor-ted.Only one case of injury was caused by a sterile device,while the remaining 390 cases were caused by contamina-ted devices.There were 85,107,113,and 86 cases in 2020,2021,2022,and 2023,respectively.Most NSIs oc-curred among interns(n=235,60.1％).294 cases(75.2％)of NSIs occurred among HCWs who had less than 3 years of clinical experience.The distribution of NSIs among 235 interns in different months showed that NSIs ac-counted for a relatively high proportion from April to June and July to September,and the difference was statistica-lly significant(P＜0.05).The ventral side of the left thumb was the most common site of NSIs(n=53,13.6％),followed by the ventral side of the right index finger(n=45,11.5％)and the ventral side of the left index finger(n=44,11.3％).The most common devices involved in NSIs were various types of syringe needles(n=84,21.5％),followed by various types of dental burs(n=76,19.4％)and suture needles(n=49,12.5％).Injuries mainly oc-curred during the treatment process(n=212,54.2％)and in the department of endodontics(n=86,22.0％).This study didn't find any occupational bloodborne infection case caused by NSIs.Conclusion NSIs mainly occur among inexperienced oral interns,and devices causing NSIs are related to the treatment process.

Objective To determine the effect of non-high-density lipoprotein cholesterol(non-HDL-C)on all-cause and cause-specific mortality in an ≥60-year-old elderly population.Methods A total of 16 642 older adults(≥60 years)were subjected from the National Health and Nutrition Examination Survey between 1999 and 2018.According to the tertile of non-HDL-C level,the par-ticipants were divided into tertile 1(＜3.15 mmol/L,n=5499),tertile 2(3.15-4.06 mmol/L,n=5499),and tertile 3 groups(＞4.06 mmol/L,n=5644).The occurrences of all-cause,cardiovascu-lar,and non-cardiovascular death were identified as the study endpoint.Cox proportional hazards regression,Kaplan-Meier survival and restricted cubic spline curve analyses were applied for sta-tistical study.Results An obvious L-shaped associations were observed in non-HDL-C level with risks for all-cause,cardiovascular,and non-cardiovascular death.After adjusting multivariable,the tertile 1 group had significantly higher risks for all-cause,cardiovascular,and non-cardiovascular death than the tertile 2 group(HR=1.123,95％CI:1.054-1.200,P=0.000;HR=1.142,95％CI:1.024-1.292,P=0.027;HR=1.113,95％CI:1.033-1.210,P=0.011).Kaplan-Meier survival analysis showed that the tertile 1 group had notably lower survival rate than the tertile 2 group and the tertile 3 group(P＜0.01).Threshold effect analysis revealed that when non-HDL-C level was lower than 3.36,3.18 and 3.59 mmol/L,respectively,the risk of all-cause,cardiovascular,and noncardiovascular mortality was increased.Conclusion In the elderly ≥60-year-old population,non-HDL-C level exhibited a L-shaped association with all-cause and cause-specific mortality,and＞3.18 mmol/L is regarded as a rational range.

Objective To analyze the risk factors of nosocomial infection among the patients in neuro-surgical ICU,and to construct the risk prediction model to provide reference for the prediction of nosocomial infection in neurosurgical ICU patients.Methods The clinical data of 280 patients admitted and treated in the neurosurgery ICU of this hospital from January 2021 to December 2022 were retrospectively analyzed.The pa-tients were divided into the infection group and non-infection group based on whether or not nosocomial infec-tion occurring,140 cases in each group.A total of 196 patients were extracted as the training set by a ratio of 7︰3 for constructing the model,while the remaining 84 patients served as the validation set for conducting the internal verification.The logistic regression was used to analyze the risk factors of nosocomial infection in the neurosurgery ICU patients,and a predictive model was established.The receiver operating characteristic (ROC) curve was drawn to evaluate the predictive effect of the model.Results The multivariate logistic re-gression analysis indicated that old age,long surgery time,catheter use and glucocorticoids use were screened as the main risk factors of nosocomial infection occurrence in neurosurgery ICU patients.The nomogram mod-el was constructed based on the results of multivariate analysis,the area under the curve of training set and validation set were 0.796 and 0.875,respectively.The correcting model reflected good consistency between actual diagnosis and predictive diagnosis.Conclusion The model constructed in this study has the high predic-tive value for the nosocomial infection occurrence risk in the patients of the neurosurgery ICU.

Objective:Human leukocyte antigen(HLA)B27 is a susceptibility allele of ankylosing spondylitis(AS),and HLA-B27 antigen typing is an important indicator for clinical diagnosis of AS,but current typing methods such as sequence specific primer polymerase chain reaction(PCR-SSP)still possess limitation.Therefore,this study aims to analyze the correlation between B27 subtypes and susceptibility to AS in Hunan Province by applying high-resolution polymerase chain reaction-sequence-based typing(PCR-SBT). Methods:Peripheral blood of 116 patients with suspected AS(suspected AS group)and 121 healthy volunteers(control group)admitted to the Second Xiangya Hospital from January 2020 to December 2020 were collected for HLA-B genotyping by PCR-SBT.Among the patients in the suspected AS group,23 patients were finally diagnosed with AS(confirmed AS group),and the remaining 93 undiagnosed patients served as the non-confirmed AS group.PCR-SBT and PCR-SSP were used to detect HLA-B27 typing in 116 patients with suspected AS,and the results of the 2 methods were compared. Results:The HLA-B27 allele frequency in the suspected AS group was significantly higher than that in the control group[11.63%vs 2.48%;P<0.001,odds ratio(OR)=5.18,95%confidence interval(CI)2.097 to 12.795].B*27:04,B*27:05,B*27:06,and B*27:07 were detected in the suspected AS group and the control group.The frequency of the B*27:04 allele in the suspected AS group was significantly higher than that in the control group(9.48%vs 1.24%;P<0.001,OR=8.346,95%CI 2.463 to 28.282).The positive rate of B27 in the suspected AS group and the confirmed AS group(B27+/+ and B27+/-)was significantly higher than that in the control group(χ2=16.579,P<0.001;χ2=94.582,P<0.001,respectively).Among the confirmed AS group,21 were HLA-B27 carriers,and the B27 positive rate in the confirmed AS group was 91.3%.PCR-SBT could achieve high resolution typing of the HLA-B gene locus,with higher sensitivity,specificity,positive predictive value,negative predictive value,and accuracy than PCR-SSP. Conclusion:PCR-SBT typing analysis shows a strong correlation between HLA-B * 27:04 and AS in Hunan province.The PCR-SBT method can be used as the preferred option for the auxiliary diagnosis of clinical AS.

Biapenem is a carbapenem antibiotic， and can be used for the treatment of sepsis， pneumonia， lung abscess， chronic respiratory lesions secondary infection， complex urinary tract infection and pyelonephritis， etc. This article reviewed the studies on the pharmacokinetics， pharmacodynamics and therapeutic drug monitoring （TDM） of biapenem. The pharmacokinetic parameters of biapenem are not significantly different in healthy subjects， and there is no accumulation after multiple doses of biapenem. However， there are large differences in pharmacokinetic parameters in patients with severe disease and patients with abnormal renal function compared with healthy subjects， which leads to conventional treatment regimens not achieving the desired outcome. In terms of pharmacodynamics， biapenem can improve the rate of reaching the target value by increasing the frequency of administration and prolonging the infusion time. For patients with anuria in end-stage renal disease， dosing intervals can be extended to avoid drug accumulation. However, for patients with severe infection, a daily dose of 1.2 g still can not control infections caused by Acinetobacter baumannii or Pseudomonas aeruginosa, which limits its use in patients with severe disease. It is recommended to implement TDM in severe patients and patients with abnormal renal function， and explore the best dosing regimen for biapenem in combination with pharmacokinetic models to ensure that the time that the free blood concentration of biapenem remains above minimum inhibitory concentration as a percentage of the time between doses （%fT＞MIC） is within the effective range，so that biapenem can exert a greater efficacy in severe patients and patients with abnormal renal function. For medical institutions that cannot carry out TDM， the efficacy of biapenem can be maximized by increasing the frequency of administration and prolonging the infusion time. For infections caused by P. aeruginosa， A. baumannii and Serratia marcescens with high drug resistance rates， it is recommended to combine or replace other antibiotics.

The promise of regeneration therapy for restoration of damaged myocardium after cardiac ischemic injury relies on targeted delivery of proliferative molecules into cardiomyocytes whose healing benefits are still limited owing to severe immune microenvironment due to local high concentration of proinflammatory cytokines. Optimal therapeutic strategies are therefore in urgent need to both modulate local immunity and deliver proliferative molecules. Here, we addressed this unmet need by developing neutrophil-mimic nanoparticles NM@miR, fabricated by coating hybrid neutrophil membranes with artificial lipids onto mesoporous silica nanoparticles (MSNs) loaded with microRNA-10b. The hybrid membrane could endow nanoparticles with strong capacity to migrate into inflammatory sites and neutralize proinflammatory cytokines and increase the delivery efficiency of microRNA-10b into adult mammalian cardiomyocytes (CMs) by fusing with cell membranes and leading to the release of MSNs-miR into cytosol. Upon NM@miR administration, this nanoparticle could home to the injured myocardium, restore the local immunity, and efficiently deliver microRNA-10b to cardiomyocytes, which could reduce the activation of Hippo-YAP pathway mediated by excessive cytokines and exert the best proliferative effect of miR-10b. This combination therapy could finally improve cardiac function and mitigate ventricular remodeling. Consequently, this work offers a combination strategy of immunity modulation and proliferative molecule delivery to boost cardiac regeneration after injury.