Objective To explore the clinical effect of cold treatment of replacement fluid in continuous blood purification(CBP)of patients with heat stroke.Methods Clinical data of 46 patients with heat stroke who were treated with CBP in Hainan Hospital of PLA General Hospital from July 2018 to September 2022 were retrospectively analyzed.The patients were assigned to control group(23 cases,conventional treatment for heat stroke and CBP with room temperature replacement fluid)and observation group(23 cases,conventional treatment for heat stroke and CBP with cooling replacement fluid).The body temperatures were compared between the two groups before treatment and 30 min,2 h,6 h,12 h and 24 h after treatment.The prothrombin activity(PTA),activated partial thromboplastin time(APTT),D-dimer(D-D),fibrinogen(FIB)and platelet count(PLT)before treatment and at 24 h(T1),3 d(T2)and 7 d(T3)after treatment,as well as the Acute Physiology and Chronic Health Evaluation Ⅱ(APACHEⅡ)score at 7 d after treatment were also compared between the two groups.Results There was no significant difference in temperature or coagulation function between the two groups before treatment(P>0.05).The temperature of the observation group was significantly different from that of the control group at 2 h,6h and 12h after treatment(P<0.05).After treatment,the levels of PTA,FIB and PLT in the observation group at T1,T2 and T3 were higher than those in the control group,while the level of D-D in the observation group was lower than that in the control group,and the APPT at T1 and T2 was significantly shorter than that in the control group(P<0.05).PTA,APPT,D-D,FIB and PLT of the two groups were improved after treatment(P<0.05).Conclusion The cold treatment of replacement fluid can quickly shorten the cooling time of patients with heat stroke during CBP,and significantly improve coagulation function.It is worthy of clinical promotion so as to improve the progrosis of patients with heat strok.

Objective To evaluate the clinical value of a nomogram based on biparametric MRI radiomics combined with apparent diffusion coefficient(ADC)values in predicting Gleason score(GS)of prostate cancer(PCa).Methods A retrospective analysis was conducted on MRI data of 105 PCa patients.The radiomics features were extracted from region of interest(ROI)delineated on ADC and T2WI images,and after screening features,the radiomics model was established and the Radiomics score(Radscore)was calculated.Clinical factors and Radscore were analyzed using logistic regression to identify independent predictors of GS,which were used to construct a combined model and plot nomogram.The area under the curve(AUC),decision curve analysis(DCA),and calibration curves were used to evaluate the performance of combined model,and compare it with radiomics model.Results A total of 214 radiomics features were extracted,and three features were selected to establish a radiomics model and calculate the Radscore.Radscore and ADC values were independent predictors for assessing GS,and a combined model was constructed based on these two factors.The AUC of the radiomics model and the combined model in the training set were 0.801 and 0.866,respectively;and the AUC in the test set were 0.767 and 0.838,respectively.The combined model had better predictive value,calibration,and clinical application value,and its predictive performance was better than that of the radiomics model.Conclusion The nomogram constructed based on biparametric MRI radiomics combined with ADC values can noninvasively distinguish PCa in Gleason low-middle-risk from high-risk.

Objective:It aims to deepen the understanding of the coupled and coordinated development of health investment and economic growth,and to provide a scientific basis for the development of health policies for China's ten largest urban ag-glomerations.Methods:Based on the provincial panel data of ten major urban agglomerations from 2013 to 2022,entropy weight method,coupled coordination degree model,spatial autocorrelation model and quantile regression model are used for analysis.Results:In observation period,the level of two-system coupling and coordination grows from 0.397 in 2013 to 0.645 in 2022;the global Moran's I decreases from-0.020 to-0.357.In the dynamic leapfrog analysis,22.2%of provinces and munici-palities experience positive leapfrogging,while 16.7%of provinces and municipalities show negative leapfrogging.Baesd on lo-calised Moran Index,the quantile regression results show that the proportion of the people in higher education,the level of ur-banization and the level of labor force have a positive influence on the level of coupling and coordination between these two sys-tems,with the β coefficient showing a tendency of increasing and then decreasing;medical research institutes have a negative influence on the level of coupling and coordination between these two systems on the 0.1-0.3 quantile;the level of foreign invest-ment has a positive influence on the 0.1 quantile,and the 0.6-0.8 quartile has a negative effect.GDP per capita has a weak ef-fect on the level of coordination between these two systems.Conclusion:The two-system coupling and coordination level of the ten major urban agglomerations shows an overall increase,but there are regional differences,and it is affected by the integra-tion of science and education,economic level and human resources.

Objective To observe the clinical efficacy of lumbar disc resection under unilateral biportal endoscopy(UBE)for calcified lumbar disc herniation(CLDH).Methods A retrospective analysis was conducted on 25 patients with single-segment CLDH who underwent lumbar disc resection under UBE from January 2020 to January 2022.The operation time,postoperative hospital stay,and postoperative complications were recorded.The visual analogue scale(VAS)score for low back and leg pain,Japanese Orthopaedic Association(JOA)score for the lumbar spine,and Oswestry disability index(ODI)were used to evaluate the efficacy before surgery,3 d after surgery,1 month after surgery,and at the last follow-up.At the last follow-up,the modified Macnab standard was used to assess the excellent and good rate.Results The patients were followed up for 12～24 months,with an average of(15.60±2.60)months.The average operation time was(58.67±10.73)min,and the postoperative hospital stay was(4.65±0.63)d.The VAS score,and ODI were lower,and JOA score was higher at 3 d after surgery,1 month after surgery,and the last follow-up compared with those before surgery,and the differences were statistically significant(P<0.05).At the last follow-up,according to the modified Macnab criteria,15 cases were rated as excellent,9 cases as good,and 1 case as fair.The excellent and good rate was 96.00%(24/25).Postoperative complications included a tear of the ventral dural sac of the nerve root,about 5 mm in length,without dural sac repair.The patient was instructed to stay in bed for 5 d after surgery and was given fluid replacement.The patient did not complain of discomfort such as headache when he got out of bed,and the postoperative MRI showed no massive epidural effusion.One patient had lower limb sensory disturbance and was treated with neurotrophic drugs,and recovered at the 1-month follow-up after surgery.Postoperative imaging examinations showed that the free calcified tissues were basically completely resected and the nerve roots were adequately decompressed.At the last follow-up,no recurrent cases were found.Conclusion Lumbar disc resection under UBE for CLDH is an effective and safe minimally invasive technique.

Objective To observe the clinical efficacy of lumbar disc resection under unilateral biportal endoscopy(UBE)for calcified lumbar disc herniation(CLDH).Methods A retrospective analysis was conducted on 25 patients with single-segment CLDH who underwent lumbar disc resection under UBE from January 2020 to January 2022.The operation time,postoperative hospital stay,and postoperative complications were recorded.The visual analogue scale(VAS)score for low back and leg pain,Japanese Orthopaedic Association(JOA)score for the lumbar spine,and Oswestry disability index(ODI)were used to evaluate the efficacy before surgery,3 d after surgery,1 month after surgery,and at the last follow-up.At the last follow-up,the modified Macnab standard was used to assess the excellent and good rate.Results The patients were followed up for 12～24 months,with an average of(15.60±2.60)months.The average operation time was(58.67±10.73)min,and the postoperative hospital stay was(4.65±0.63)d.The VAS score,and ODI were lower,and JOA score was higher at 3 d after surgery,1 month after surgery,and the last follow-up compared with those before surgery,and the differences were statistically significant(P<0.05).At the last follow-up,according to the modified Macnab criteria,15 cases were rated as excellent,9 cases as good,and 1 case as fair.The excellent and good rate was 96.00%(24/25).Postoperative complications included a tear of the ventral dural sac of the nerve root,about 5 mm in length,without dural sac repair.The patient was instructed to stay in bed for 5 d after surgery and was given fluid replacement.The patient did not complain of discomfort such as headache when he got out of bed,and the postoperative MRI showed no massive epidural effusion.One patient had lower limb sensory disturbance and was treated with neurotrophic drugs,and recovered at the 1-month follow-up after surgery.Postoperative imaging examinations showed that the free calcified tissues were basically completely resected and the nerve roots were adequately decompressed.At the last follow-up,no recurrent cases were found.Conclusion Lumbar disc resection under UBE for CLDH is an effective and safe minimally invasive technique.

Objective To evaluate the clinical value of a nomogram based on biparametric MRI radiomics combined with apparent diffusion coefficient(ADC)values in predicting Gleason score(GS)of prostate cancer(PCa).Methods A retrospective analysis was conducted on MRI data of 105 PCa patients.The radiomics features were extracted from region of interest(ROI)delineated on ADC and T2WI images,and after screening features,the radiomics model was established and the Radiomics score(Radscore)was calculated.Clinical factors and Radscore were analyzed using logistic regression to identify independent predictors of GS,which were used to construct a combined model and plot nomogram.The area under the curve(AUC),decision curve analysis(DCA),and calibration curves were used to evaluate the performance of combined model,and compare it with radiomics model.Results A total of 214 radiomics features were extracted,and three features were selected to establish a radiomics model and calculate the Radscore.Radscore and ADC values were independent predictors for assessing GS,and a combined model was constructed based on these two factors.The AUC of the radiomics model and the combined model in the training set were 0.801 and 0.866,respectively;and the AUC in the test set were 0.767 and 0.838,respectively.The combined model had better predictive value,calibration,and clinical application value,and its predictive performance was better than that of the radiomics model.Conclusion The nomogram constructed based on biparametric MRI radiomics combined with ADC values can noninvasively distinguish PCa in Gleason low-middle-risk from high-risk.

Objective:It aims to deepen the understanding of the coupled and coordinated development of health investment and economic growth,and to provide a scientific basis for the development of health policies for China's ten largest urban ag-glomerations.Methods:Based on the provincial panel data of ten major urban agglomerations from 2013 to 2022,entropy weight method,coupled coordination degree model,spatial autocorrelation model and quantile regression model are used for analysis.Results:In observation period,the level of two-system coupling and coordination grows from 0.397 in 2013 to 0.645 in 2022;the global Moran's I decreases from-0.020 to-0.357.In the dynamic leapfrog analysis,22.2%of provinces and munici-palities experience positive leapfrogging,while 16.7%of provinces and municipalities show negative leapfrogging.Baesd on lo-calised Moran Index,the quantile regression results show that the proportion of the people in higher education,the level of ur-banization and the level of labor force have a positive influence on the level of coupling and coordination between these two sys-tems,with the β coefficient showing a tendency of increasing and then decreasing;medical research institutes have a negative influence on the level of coupling and coordination between these two systems on the 0.1-0.3 quantile;the level of foreign invest-ment has a positive influence on the 0.1 quantile,and the 0.6-0.8 quartile has a negative effect.GDP per capita has a weak ef-fect on the level of coordination between these two systems.Conclusion:The two-system coupling and coordination level of the ten major urban agglomerations shows an overall increase,but there are regional differences,and it is affected by the integra-tion of science and education,economic level and human resources.

Objective To explore the predictive value of systemic immune inflammatory index(SII),systemic inflammatory response index(SIRI),neutrophil to lymphocyte ratio(NLR),lymphocyte to monocyte ratio(LMR),platelet to lymphocyte radio(PLR),albumin to globulin(AGR)and heat shock protein 90α(HSP90α)in Fuhrman grade of clear cell renal cell carcinoma(ccRCC).Methods From October 2019 to August 2022,212 patients who underwent surgical treatment for ccRCC were divided into low-grade tumor group and high-grade tumor group according to Fuhrman grade.The independent influencing factors of Fuhrman grading were determined by univariate and multivariate Logistic regression analysis,and the predictive value of each inflammatory index to Fuhrman grading was evaluated by drawing Receiver operating characteristic curve(ROC).We constructed the line chart prediction model and evaluated the effectiveness of the model.Results The preoperative levels of SII,PLR,AGR,HSP90α and the maximum diameter of tumor were significantly different between high-grade group and low-grade group(P＜0.05).Logistic regression analysis showed that the maximum diameter of tumor,PLR,AGR and HSP90α were independent influencing factors of Furhman grade.By drawing the ROC curve,it was found that the area under the curve(AUC)of PLR,AGR and HSP90α to predict Furhman grade were 0.641,0.675 and 0.696.In addition,the Furhman grade line chart prediction model had good prediction ability,the AUC was 0.789(95％CI:0.717～0.862),the sensitivity was 61.80％,and the specificity was 85.40％.Conclusions There was a significant correlation between inflammation-related indexes in peripheral blood and Furhman grade of clear cell renal cell carcinoma.The Furhman grade line chart prediction model based on the maximum diameter of tumor and peripheral blood inflammation index has good predictive ability.

Objective To explore the value of T2*mapping in quantitatively evaluate changes in knee joint cartilage and subchon-dral bone of new recruits before and after intensive training.Methods MRI scans of the right knee joint were performed three times on 20 new recruits:before intensive training,after one week of intensive training,and after one month of rest.The knee joint cartilage was divided into six regions:lateral femur(LF),medial femur(MF),lateral tibia(LT),medial tibia(MT),patella cartilage(PC),and trochlea cartilage(TC).Using the posterior angle of the meniscus as a boundary,LF and MF were divided into the cLF/cMF and pLF/pMF.Divid-ed into superficial zone(SZ)cartilage and deep zone(DZ)cartilage based on a thickness of 1/2 of the cartilage.The subchondral bone was divided into superficial bone(SB)within 5 mm of the joint cartilage,and deep bone(DB)within 6-10 mm of the joint cartilage.The T2*values of each region of cartilage and subchondral bone were evaluated through region of interest(ROI)analysis.Single fac-tor analysis of variance was used to compare the changes in T2*values.The LSD test method was used for inter-group comparison.Results After one week of intensive training,MT-SZ,cMF-SZ,PC-SZ,TC-SZ were significantly higher than before intensive training(P＜0.05).After one month of rest,there was no statistically significant difference in the T2*value of the cartilage area compared with before intensive training(P＞0.05).There was a trend of"rising first and then falling".There was no statistically signifi-cant difference in the T2*value of subchondral bone of the knee joint before intensive training and after one week of intensive training(P＞0.05).Compared with after one month of rest,except for cLF-DB,pLF-DB,trochlea cartilage-deep bone(TC-DB),the T2*value of the subchondral bone of the remaining knee joint increased before intensive training and after one week of intensive training,with sta-tistically significant differences(P＜0.05).Conclusion T2*mapping can display the changes in the ultrastructure and biochemical components of joint cartilage and subchondral bone after the new recruits intensive training,detect early injuries and conduct non-invasive quantitative evaluation.

Objective To explore the value of MR diffusion tensor imaging(DTI)in evaluating the effect of march training on the thigh muscles of recruits.Methods DTI scans of the right thigh were performed three times in forty recruits:before and after the march training and one month after the rest.Fractional anisotropy(FA)was measured on the cross-sectional images of the thigh muscles,including rectus femoris(RF),vastus medialis(VM),vastus lateralis(VL),vastus intermedius(VI),gracilis muscle(GM),sartorius muscle(SM),semitendinosus muscle(STM),semimembranosus muscle(SMM),long head of biceps femoris(LHBF)and short head of biceps femoris(SHBF).The percentage changes in FA values of each muscle after the training and rest were calculated.Paired samplet-tests were used to analyze the differences in FA among the thigh muscles at different time points,and one-way ANOVA was used to analyze the differences in the percentage changes of FA among the thigh muscles after the training and rest.Results Compared to pre-training,the FA values of all thigh muscles significantly decreased after the training,with statistical differences(P＜0.05).After the rest,the FA values of all thigh muscles recovered,but statistical differences remained in RF(P＜0.001),VM(P＜0.001),VL(P=0.001),STM(P=0.046),and LHBF(P=0.013).After the training and rest,the FA values of the recruits'thigh muscles showed a"decreasing first and then increasing"trend.There were statistical differences in the percentage changes of FA after the training and the recovery percentages of FA after the rest among the thigh muscles(P＜0.001,P＜0.001).Conclusion DTI may reflect the ultra-structure changes in the thigh muscles of recruits after the march training and provide a quantitative and noninvasive assessment of muscle micro-injuries.