Objective: To compare the effects of 12 week Tai Chi combined with inspiratory muscle resistance training on cardiopulmonary function among male college students in health care classes, so as to provide a reference for improving the cardiopulmonary function of the students. Methods: From March to May 2025, 72 male students from the physical education health care classes at North University of China were selected and randomly divided into the control group ( n =25), the Tai Chi group ( n = 24), and the Tai Chi combined with inspiratory muscle resistance training group (combined group, n =23) by random number table method. The control group maintained normal living habits, the Tai Chi group underwent 12 weeks of Tai Chi exercise (three sessions per week, 90 minutes per session), and the combined group received 12 weeks of Tai Chi training (three sessions per week, 60 minutes per session) combined with 30 minutes of inspiratory muscle resistance training. Cardiovascular function[heart rate(HR), stroke volume(SV), cardiac output(CO), mean systolic pressure(MSP), mean diastolic pressure(MDP), vascular elastic dilatation coefficient (VDC), total peripheral resistance (TPR), viscosity (V)], pulmonary function [vital capacity (VC), forced vital capacity (FVC), maximum minute ventilation volume (MVV), forced expiratory volume in one second (FEV1), FEV1/FVC] and heart rate variability (HRV) [HR, standard deviation of the normal to normal intervals (SDNN), root mean square successive difference (RMSSD), low frequency (LF), high frequency (HF), LF/HF] of the three groups of subjects were tested before and after the experiment, the data were analyzed using analysis of covariance. Results: There were no statistically significant differences in any indicators among the three groups before the intervention ( F =0.00-2.49, all P >0.05). After the intervention, except FEV1/FVC, MDP and V, there were statistically significant differences of pulmonary function, cardiovascular function and HRV indicators among the three groups ( F =4.38-62.93, all P <0.05). Compared with the control group [(VC ( 3.28± 0.30)L, FVC (3.20±0.29)L, MVV (107.01±9.55)L, SV (65.68±2.34)mL, CO (5.36±0.18)L/min, VDC (0.40±0.03), step index (50.64±3.11), MSP (133.17±6.47)mmHg, TPR (1 281.34±100.78)dyn ·s ·cm -5 ], the VC [(3.43±0.24, 3.69±0.21)L], FVC [(3.34±0.16, 3.46±0.20)L], MVV [(112.54±8.95, 117.11±6.37)L], SV [(71.75±4.20, 75.39±3.71)L/time], CO[( 5.53± 0.14, 5.58±0.15)L/min], VDC (0.43±0.03, 0.44±0.02) and step index (53.38±5.77, 56.17±4.91) in the Tai Chi group and the combined group significantly increased, while the MSP [(120.17±6.42, 118.04±12.99)mmHg] and TPR [( 1 227.01 ±107.25, 1 217.69±64.93)dyn ·s ·cm -5 ] significantly decreased (all P <0.05). The HRV showed improvement. Moreover, compared with the Tai Chi group, VC, FVC, MVV, FEV1[(2.99±0.14，3.05±0.15)L], SV, step index, RMSSD[( 45.41± 9.59，52.82±7.67)ms] and HF [(2.74±0.13，2.87±0.16)ms 2] increased, while HR [(77.17±6.01, 73.83± 3.71)beats/min ] decreased in the combined group (all P < 0.05 ). Conclusion Twelve weeks of Tai Chi exercise and Tai Chi combined with inspiratory muscle resistance training can improve the cardiopulmonary function of male college students in health care classes, and the effect of the combined training is superior to that of Tai Chi training alone.

Objective To investigate the predictive value of derived neutrophil lymphocyte ratio(dNLR)and non-high-density lipoprotein cholesterol/high-density lipoprotein cholesterol ratio(NHHR)for in-hospital outcomes of acute myocardial infarction(AMI)patients after PCI.Methods A total of 206 AMI patients undergoing PCI in our department from January 2021 to December 2023 were recruited,and according to their outcomes after PCI,they were divided into a good prognosis group(174 cases)and a poor prognosis group(32 cases).The clinical data were collected,and the dNLR and NHHR values were calculated.ROC curve was plotted to evaluate the predictive value of dNLR,NHHR and their combination for in-hospital outcomes of AMI pa-tients after PCI.Multivariate logistic regression analysis was applied to identify the influencing factors for in-hospital outcomes of AMI patients after PCI.Results The poor prognosis group had significantly higher Gensini score,larger proportions of NYHA Classes Ⅲ+Ⅳ and multi-vessel lesions,and elevated dNLR and NHHR,and lower LVEF value than the good prognosis group(P＜0.05,P＜0.01).The AUC value of dNLR,NHHR and their combination in predicting in-hospital outcomes of AMI patients after PCI was 0.758(95％CI:0.713-0.808),0.812(95％CI:0.767-0.857)and 0.914(95％CI:0.869-0.964),respectively.Multivariate logistic regression analysis showed that LVEF(OR=2.519,95％CI:1.249-5.082,P=0.010),multi-vessel lesions(OR=2.323,95％CI:1.358-3.975,P=0.002),dNLR(OR=3.031,95％CI:1.793-5.126,P=0.001),and NHHR(OR=3.480,95％CI:1.873-6.465,P=0.001)were influencing factors for in-hospital outcomes in AMI patients after PCI(P＜0.05).Conclusion High dNLR and NHHR values are closely associated with poor outcomes in AMI patients after PCI,and their combination may be an indicator to predict the outcomes after PCI.

Objective To observe the clinical efficacy of Zishen Shujing decoction in the treatment of kidney deficiency and liver depression type premature ovarian failure(POF).Methods A total of 70 female POF patients who visited the Fourth Clinical Medical College of Guangzhou University of Traditional Chinese Medicine from July 2023 to April 2024 were selected as the research subjects,they were divided into traditional Chinese medicine(TCM)treatment group(n=35)and Western medicine treatment group(n=35)by using a random number table method.Western medicine treatment group was treated with femostone,and TCM treatment group was treated with Zishen Shujing decoction.Differences of TCM syndrome scores and clinical efficacy were compared between two groups before and after treatment,and changes of peripheral blood follicle-simulating hormone(FSH),anti-Müllerian hormone(AMH),anal follicle count(AFC)and interleukin(IL)-4,IL-6 before and after treatment were compared.Results The effective rate of TCM treatment group was higher than that of Western medicine treatment group,the difference was statistically significant(P<0.05).The TCM syndrome scores after treatment were lower than before treatment,and TCM treatment group was lower than Western medicine treatment group,the difference was statistically significant(P<0.05).After treatment,FSH levels in two groups were lower than before treatment,AMH and AFC levels were higher than before treatment,and improvement of hormone levels,AMH and AFC in TCM treatment group was better than that in Western medicine treatment group,with statistical significance(P<0.05).After treatment,the anti-inflammatory factors IL-4 were increased,and the pro-inflammatory factors IL-6 were decreased,and the increase effect of anti-inflammatory factors and the decrease effect of pro-inflammatory factors in TCM treatment group were better than those in Western medicine treatment group with statistical significance(P<0.05).Conclusion Zishen Shujing decoction can improve the clinical symptoms,serum hormone levels of POF patients with kidney deficiency and liver depression,improve ovarian function,reduce immune inflammation,reduce oxidative stress,and effectively improve the quality of life of patients.

Objective To investigate the predictive value of derived neutrophil lymphocyte ratio(dNLR)and non-high-density lipoprotein cholesterol/high-density lipoprotein cholesterol ratio(NHHR)for in-hospital outcomes of acute myocardial infarction(AMI)patients after PCI.Methods A total of 206 AMI patients undergoing PCI in our department from January 2021 to December 2023 were recruited,and according to their outcomes after PCI,they were divided into a good prognosis group(174 cases)and a poor prognosis group(32 cases).The clinical data were collected,and the dNLR and NHHR values were calculated.ROC curve was plotted to evaluate the predictive value of dNLR,NHHR and their combination for in-hospital outcomes of AMI pa-tients after PCI.Multivariate logistic regression analysis was applied to identify the influencing factors for in-hospital outcomes of AMI patients after PCI.Results The poor prognosis group had significantly higher Gensini score,larger proportions of NYHA Classes Ⅲ+Ⅳ and multi-vessel lesions,and elevated dNLR and NHHR,and lower LVEF value than the good prognosis group(P＜0.05,P＜0.01).The AUC value of dNLR,NHHR and their combination in predicting in-hospital outcomes of AMI patients after PCI was 0.758(95％CI:0.713-0.808),0.812(95％CI:0.767-0.857)and 0.914(95％CI:0.869-0.964),respectively.Multivariate logistic regression analysis showed that LVEF(OR=2.519,95％CI:1.249-5.082,P=0.010),multi-vessel lesions(OR=2.323,95％CI:1.358-3.975,P=0.002),dNLR(OR=3.031,95％CI:1.793-5.126,P=0.001),and NHHR(OR=3.480,95％CI:1.873-6.465,P=0.001)were influencing factors for in-hospital outcomes in AMI patients after PCI(P＜0.05).Conclusion High dNLR and NHHR values are closely associated with poor outcomes in AMI patients after PCI,and their combination may be an indicator to predict the outcomes after PCI.

Objective To observe the clinical efficacy of Zishen Shujing decoction in the treatment of kidney deficiency and liver depression type premature ovarian failure(POF).Methods A total of 70 female POF patients who visited the Fourth Clinical Medical College of Guangzhou University of Traditional Chinese Medicine from July 2023 to April 2024 were selected as the research subjects,they were divided into traditional Chinese medicine(TCM)treatment group(n=35)and Western medicine treatment group(n=35)by using a random number table method.Western medicine treatment group was treated with femostone,and TCM treatment group was treated with Zishen Shujing decoction.Differences of TCM syndrome scores and clinical efficacy were compared between two groups before and after treatment,and changes of peripheral blood follicle-simulating hormone(FSH),anti-Müllerian hormone(AMH),anal follicle count(AFC)and interleukin(IL)-4,IL-6 before and after treatment were compared.Results The effective rate of TCM treatment group was higher than that of Western medicine treatment group,the difference was statistically significant(P<0.05).The TCM syndrome scores after treatment were lower than before treatment,and TCM treatment group was lower than Western medicine treatment group,the difference was statistically significant(P<0.05).After treatment,FSH levels in two groups were lower than before treatment,AMH and AFC levels were higher than before treatment,and improvement of hormone levels,AMH and AFC in TCM treatment group was better than that in Western medicine treatment group,with statistical significance(P<0.05).After treatment,the anti-inflammatory factors IL-4 were increased,and the pro-inflammatory factors IL-6 were decreased,and the increase effect of anti-inflammatory factors and the decrease effect of pro-inflammatory factors in TCM treatment group were better than those in Western medicine treatment group with statistical significance(P<0.05).Conclusion Zishen Shujing decoction can improve the clinical symptoms,serum hormone levels of POF patients with kidney deficiency and liver depression,improve ovarian function,reduce immune inflammation,reduce oxidative stress,and effectively improve the quality of life of patients.

Objective:To investigate the related factors of restlessness during the anesthesia recovery period in children with patent ductus arteriosus after interventional surgery.Methods:The clinical data of 92 pediatric patients with patent ductus arteriosus who underwent cardiac catheterization at Children's Hospital, Zhejiang University School of Medicine from November 2019 to October 2020 were retrospectively analyzed. These patients were divided into two groups based on the occurrence of restlessness during the anesthesia recovery period: a control group ( n = 67, without restlessness) and an observation group ( n = 25, with restlessness). Clinical data from both groups were collected and compared. Univariate and multivariate analyses were conducted to identify independent risk factors for restlessness during the anesthesia recovery period among pediatric patients with patent ductus arteriosus after interventional surgery. Results:Univariate analysis revealed no statistically significant differences in gender, age, temperament type, surgical duration, resuscitation room stay time, as well as blood pressure, heart rate, and blood oxygen saturation during the anesthesia recovery period between the two groups (all P > 0.05). However, the use of dexmedetomidine during surgery, preoperative anxiety, postoperative pain, and the use of antagonists were identified as risk factors for postoperative restlessness among pediatric patients with patent ductus arteriosus after interventional surgery χ2 = 9.03, 4.95, 5.84, 11.49, all P < 0.05). Multivariate regression analysis results further revealed that preoperative anxiety, postoperative pain, and the use of antagonists were independent risk factors for postoperative restlessness ( OR = 2.870, 4.083, 6.975, P = 0.029, 0.004, 0.002, 95% CI = 1.114-7.389, 1.555-10.722, 2.052-23.711), while intraoperative use of dexmedetomidine served as a protective factor ( OR = 0.318, P = 0.021, 95% CI = 0.120-0.839, all P < 0.05). Conclusion:The intraoperative use of dexmedetomidine, preoperative anxiety, postoperative pain, and the use of antagonists are identified as independent risk factors for postoperative restlessness in pediatric patients with patent ductus arteriosus after interventional surgery. It is crucial for clinicians to be aware of these factors and take preventive measures during the anesthesia recovery period to minimize the potential for harm resulting from postoperative restlessness.

Objective:To understand the status of HIV-2 infection and the epidemiological characteristics of HIV-2 infected individuals in Hunan province.Methods:The stock blood samples with HIV-2 indicative bands in the original records of 15 AIDS confirmation laboratories in Hunan province from 2003 to 2020 were collected. The samples were tested by Mikrogen GmbH (HIV 1+ 2) antibody comfirmatory kit (Germany). And meanwhile the epidemiological data of the first HIV test and the epidemiological follow-up records of the cases who could be contacted were collected.Results:A total of 378 samples with HIV-2 indicative bands were collected, involving 363 individuals. Serological test result showed that 326 cases (89.81%) were HIV-1 antibody positive, 18 cases (4.96%) were HIV-2 antibody positive, 12 cases (3.31%) were HIV antibody positive but could not be typed, 6 cases (1.65%) were HIV antibody uncertain and 1 case (0.28%) was negative for HIV-1/2 antibody. There were 15 cases from Xiangtan city and the other 3 cases from Changsha city among the 18 HIV-2 antibody positive individuals. The result of epidemiological investigation showed that there were 12 males (66.67%) and 6 females (33.33%), with a male-to-female ratio of 2∶1. The average age of the first detection was (56.94±12.52) years, in the males the age ranged from 33 to 76 years and in the females the age ranged from 44 to 66 years. The male age span was larger than that of the female. There were 10 married cases (55.56%) including one couple, 6 divorced or widowed cases (33.33%), 2 cases (11.11%) with unknown marital status. There were 13 cases from hospital monitoring (72.22%), 2 cases each from prison detention and blood screening in volunteer donors (22.22%), and 1 case from spouse screening (5.56%). These samples were tested for the first time in 2005, 2009, 2013, 2014, 2018, and 2020, with 1 case each, 6 cases in 2016, 2 cases in 2017, and 4 cases in 2019. By the end of 2020, 9 cases were alive and 9 cases were dead or missing. Three cases have accepted antiviral treatment. Of the 7 cases that could be followed up, all admitted heterosexual transmission, 6 cases denied any history of traveling abroad, and 1 case denied any history of foreign sexual intercourse.Conclusions:HIV-2 epidemic has lasted for a long time in Hunan province, local infection is not an occasional case, and there is a possibility of long-term clustering epidemic spread. This suggests that the country should strengthen the surveillance, detection, diagnosis and treatment of HIV-2 research and pay attention to the risk of HIV-2 transmission.

OBJECTIVE: To establish a headspace gas chromatography-mass spectrometry method for the determination of 14 chlorinated hydrocarbons in urine. METHODS: The urine sample 4.00 mL and anhydrous sodium sulfate 3.00 g were added into a 10.00 mL headspace bottle, then the headspace bottle was maintained at 70 ℃ for 40.0 min. After headspace pretreatment, 14 chlorinated hydrocarbons in headspace air were separated in the DB-5 MS capillary column of the gas chromatography and detected by mass spectrometer. RESULTS: There was a good linear relationship of 14 chlorinated hydrocarbons in urine in the range of 0.62-1 630.00 μg/L. The linear correlation coefficient was greater than 0.999 0.The minimum detectable concentration was 0.19-0.43 μg/L and the minimum quantitative concentration was 0.62-1.44 μg/L. The average recovery rate was 89.8%-107.1%. The within-run relative standard deviation(RSD) was 4.0%-8.5% and the between-run RSD was 6.3%-9.1%. Urine samples can be stored at 4 ℃ or-8 ℃ for 3 days and below-20 ℃ for 7 days. CONCLUSION: This method is rapid, simple, sensitive, accurate and has little interference,which can be used as a method for detecting 14 kinds of chlorinated hydrocarbons in urine samples of patients with occupational poisoning.

Objective:To study the characteristics of the lens turbidity after long-term exposure to low intensity 635nm laser.Methods:Cluster sampling method was adopted to select 812 employees in a laser leveler workshop in a city of Guangdong Province from January 2014 to December 2018. They were divided into the control group, diffuse reflection (DR) group and direct vision (DV) group for retrospective observation and analysis of lens turbidity. The laser irradiation intensity of each group was investigated, the position and shape of lens opacity were analyzed, and the influencing factors were statistically analyzed with the repeated measurement data of dichotomy.Results:The laser irradiance and radiant exposure of DV group were between 0.72×10 -4 and 9.92×10 -4 mW/cm 2 and between 2.61×10 -2 and 1.53 J/cm 2, respectively. The subjects were mainly diagnosed with lens turbidity lesion, especially for the DV group. Most of lesions occurred in the pole and periphery of the anterior cortex. The lesions exhibited multipoint patterns with greyish white color. The turbidity rates in DV group (before work and work for 1, 2, 3 years) were 0%, 1.99% (8/402) , 4.98% (20/402) and 6.72% (27/402) , respectively, in the order of observation points. The statistical analysis of single factor effect showed that the turbidity rate was higher in DV group and higher in the second year in the DV group ( P<0.01) . Multi-factor analysis of the laser effect on the lens showed that the main effect between groups, between the observation point were statistically significant ( P<0.05) , but no statistical significance in the interaction between group×observation points ( P>0.05) . Conclusion:Lens turbidity lesion can be caused by long-term exposure to low intensity 635 nm laser, so the product safety classification should be strictly strengthened. It is necessary to strengthen the protection of laser photochemical damage in the production process.

Objective:To study the characteristics of the lens turbidity after long-term exposure to low intensity 635nm laser.Methods:Cluster sampling method was adopted to select 812 employees in a laser leveler workshop in a city of Guangdong Province from January 2014 to December 2018. They were divided into the control group, diffuse reflection (DR) group and direct vision (DV) group for retrospective observation and analysis of lens turbidity. The laser irradiation intensity of each group was investigated, the position and shape of lens opacity were analyzed, and the influencing factors were statistically analyzed with the repeated measurement data of dichotomy.Results:The laser irradiance and radiant exposure of DV group were between 0.72×10 -4 and 9.92×10 -4 mW/cm 2 and between 2.61×10 -2 and 1.53 J/cm 2, respectively. The subjects were mainly diagnosed with lens turbidity lesion, especially for the DV group. Most of lesions occurred in the pole and periphery of the anterior cortex. The lesions exhibited multipoint patterns with greyish white color. The turbidity rates in DV group (before work and work for 1, 2, 3 years) were 0%, 1.99% (8/402) , 4.98% (20/402) and 6.72% (27/402) , respectively, in the order of observation points. The statistical analysis of single factor effect showed that the turbidity rate was higher in DV group and higher in the second year in the DV group ( P<0.01) . Multi-factor analysis of the laser effect on the lens showed that the main effect between groups, between the observation point were statistically significant ( P<0.05) , but no statistical significance in the interaction between group×observation points ( P>0.05) . Conclusion:Lens turbidity lesion can be caused by long-term exposure to low intensity 635 nm laser, so the product safety classification should be strictly strengthened. It is necessary to strengthen the protection of laser photochemical damage in the production process.