Objective To explore the utility of CT for the evaluation of abdominal aortic calcification(AAC)in chronic kidney disease(CKD).Methods Laboratory examination indexes and abdominal plain CT imaging of 132 CKD stage 3-5 patients were analyzed retrospectively.The ACC score was evaluated according to quantitative method,the risk factors related to AAC were analyzed.Results In correlation analyses,AAC score was positively correlated with creatinine(Cr)level,CO2 combining power(P＜0.05),and negatively corrected with albumin(ALB).Logistic regression analysis showed that Cr level were risk factors for AAC,and ALB were protective factors.Conclusion Based on abdominal plain CT images,Cr level,CO2 combining power and ALB level are related to AAC.Quantitative method based on CT has a high application value in evaluating AAC.

Objective To create risk predictive models of healthcare-seeking delay among imported malaria patients in Jiangsu Province based on machine learning algorithms, so as to provide insights into early identification of imported malaria cases in Jiangsu Province. Methods Case investigation, first symptoms and time of initial diagnosis of imported malaria patients in Jiangsu Province in 2019 were captured from Infectious Disease Report Information Management System and Parasitic Disease Prevention and Control Information Management System of Chinese Center for Disease Control and Prevention. The risk predictive models of healthcare-seeking delay among imported malaria patients were created with the back propagation (BP) neural network model, logistic regression model, random forest model and Bayesian model using thirteen factors as independent variables, including occupation, species of malaria parasite, main clinical manifestations, presence of complications, severity of disease, age, duration of residing abroad, frequency of malaria parasite infections abroad, incubation period, level of institution at initial diagnosis, country of origin, number of individuals travelling with patients and way to go abroad, and time of healthcare-seeking delay as a dependent variable. Logistic regression model was visualized using a nomogram, and the nomogram was evaluated using calibration curves. In addition, the efficiency of the four models for prediction of risk of healthcare-seeking delay among imported malaria patients was evaluated using the area under curve (AUC) of receiver operating characteristic curve (ROC). The importance of each characteristic was quantified and attributed by using SHAP to examine the positive and negative effects of the value of each characteristic on the predictive efficiency. Results A total of 244 imported malaria patients were enrolled, including 100 cases (40.98%) with the duration from onset of first symptoms to time of initial diagnosis that exceeded 24 hours. Logistic regression analysis identified a history of malaria parasite infection [odds ratio (OR) = 3.075, 95% confidential interval (CI): (1.597, 5.923)], long incubation period [OR = 1.010, 95% CI: (1.001, 1.018)] and seeking healthcare in provincial or municipal medical facilities [OR = 12.550, 95% CI: (1.158, 135.963)] as risk factors for delay in seeking healthcare among imported malaria cases. BP neural network modeling showed that duration of residing abroad, incubation period and age posed great impacts on delay in healthcare-seek among imported malaria patients. Random forest modeling showed that the top five factors with the greatest impact on healthcare-seeking delay included main clinical manifestations, the way to go abroad, incubation period, duration of residing abroad and age among imported malaria patients, and Bayesian modeling revealed that the top five factors affecting healthcare-seeking delay among imported malaria patients included level of institutions at initial diagnosis, age, country of origin, history of malaria parasite infection and individuals travelling with imported malaria patients. ROC curve analysis showed higher overall performance of the BP neural network model and the logistic regression model for prediction of the risk of healthcare-seeking delay among imported malaria patients (Z = 2.700 to 4.641, all P values < 0.01), with no statistically significant difference in the AUC among four models (Z = 1.209, P > 0.05). The sensitivity (71.00%) and Youden index (43.92%) of the logistic regression model was higher than those of the BP neural network (63.00% and 36.61%, respectively), and the specificity of the BP neural network model (73.61%) was higher than that of the logistic regression model (72.92%). Conclusions Imported malaria cases with long duration of residing abroad, a history of malaria parasite infection, long incubation period, advanced age and seeking healthcare in provincial or municipal medical institutions have a high likelihood of delay in healthcare-seeking in Jiangsu Province. The models created based on the logistic regression and BP neural network show a high efficiency for prediction of the risk of healthcare-seeking among imported malaria patients in Jiangsu Province, which may provide insights into health management of imported malaria patients.

Objective:To investigate the effect of Jiaomu Gualou Decoction combined with bisoprolol on myocardial microcirculation and oxidative/antioxidant balance in patients with heart failure.Methods:A total of 128 patients with heart failure who met the inclusion criteria from March 2020 to February 2021 in Dagang Hospital of Traditional Chinese Medicine, Binhai New Area, Tianjin were divided into 2 groups by random number table method, with 64 in each group. On the basis of conventional treatment, the control group was given oral bisoprolol, and the study group was given Jiaomu Gualou Decoction and oral bisoprolol. Both groups were treated continuously for 4 weeks. TCM syndrome scores were performed before and after treatment. The left ventricular ejection fraction (LVEF), left ventricular end-systolic diameter (LVESD), and left ventricular end-diastolic diameter (LVEDD) were detected by ultrasonic diagnostic equipment, and the frequency, duration and total myocardial ischemia load of the 24-hour ECG were recorded. Lipid peroxide (LPO) was detected by fluorescence method, SOD, MDA and GSH-Px were detected by colorimetric method. The adverse events were recorded and clinical response was evaluated.Results:The response rate was 93.75% (60/64) in the study group and 79.69% (51/64) in the control group, and the difference between the two groups was statistically significant ( χ2=5.49, P=0.019). After treatment, the scores of shortness of breath, phlegm, sternocostal fullness, and fatigue in the study group were significantly lower than those in the control group ( t values were 8.48, 8.15, 8.86, and 6.88, respectively, all Ps<0.001). After treatment, the LVEF of the study group [(53.26±5.18)% vs. (48.65±5.27)%, t=4.99] was significantly higher than that of the control group, and the LVESD [(42.59±3.26) mm vs. (46.98±3.55) mm, t=7.29], LVEDD [(52.79±4.15) mm vs. (57.48±4.60) mm, t=6.06] significantly lower than the control group ( P<0.01). After treatment, frequency of ST segment fall [(2.51±0.42) times/24 h vs. (3.79±0.55) times/24 h, t=14.80], duration [(15.26±3.45) min/24 h vs. (22.65±3.71) min/24 h, t=11.67] and total myocardial ischemia load [(25.79±5.13) mm/min vs. (38.02±5.44) mm/min, t=13.09] were significantly lower than those in the control group ( P<0.01). After treatment, the levels of serum GSH-Px and SOD in the study group were significantly higher than those in the control group ( t values were 10.97, 14.37, respectively, all Ps<0.001), while the levels of LPO and MDA were significantly lower than those in the control group ( t values were 7.50, 11.04, respectively, all Ps<0.001). During the treatment period, the incidence of adverse events was 4.69% (3/64) in the study group and 7.81% (5/64) in the control group, with no significant difference between the two groups ( χ2=0.13, P=0.715). Conclusion:The Jiaomu Gualou Decoction combined with bisoprolol can improve the cardiac function and myocardial microcirculation in patients with heart failure, promote the body's oxidation/antioxidant balance, relieve the clinical symptoms of patients, and improve the response effect safely.

Objective:To explore the application value of online and offline interactive teaching combined with three-dimensional quality theory mutual evaluation in the standardized residency training of general practitioners.Methods:Twenty-four general practitioners who were trained in The Second Hospital of Tianjin Medical University from January 2019 to December 2019 were selected as the control group, receiving traditional teaching; another 22 residents who were trained from March 2020 to February 2021 were selected as the observation group, taking online and offline interactive teaching combined with mutual evaluation of three-dimensional quality theory. After the training, the theoretical knowledge, skill operation and case analysis assessment scores, clinical ability and teaching satisfaction were compared between the two groups. SPSS 25.0 software was used for t test and rank sum test. Results:There was no significant difference in the scores of theoretical knowledge assessment, operation skills assessment, and case analysis assessment between the two groups before the training. After the training, the scores of the two groups were all increased, and the observation group had higher scores than the control group ( P<0.05). There was no significant difference in the scores of each dimension in the Direct Observation of Procedural Skills (DOPS) scale between the two groups before training, while after training, the scores of each dimension in the DOPS scale of the two groups were increased ( P<0.05), and the scores in the observation group were higher than those in the control group. The difference of mutual evaluation results after the training between the two groups was statistically significant, and the results of the observation group were higher than those of the control group ( P<0.05). Conclusion:The application of online and offline interactive teaching combined with mutual evaluation of three-dimensional quality theory in the standardized residency training of general practitioners can help improve the theory, skill practice, case analysis assessment performance and clinical ability of residents, and also obtain higher teaching satisfaction.

Objective To retrospectively investigate the characteristics of background parenchymal enhancement(BPE)in the contralateral breast following neoadjuvant chemotherapy(NAC)and whether BPE could help predict tumor response in early stage of advanced breast cancer. Methods Data from 161 patients who were diagnosed with unilateral breast cancer and then underwent NAC before surgery were analyzed retrospectively from August 2014 to December 2016.All the patients underwent both bilateral breast MRI scan with contrast enhancement. Two experienced radiologists independently categorized the patients' levels of BPE into four categories (1=minimal, 2=mild, 3=moderate, 4=marked) at baseline and after the 2nd cycle of NAC. All the patients were divided in to pathologic complete response (pCR) group and non-pCR group according to the histopathologic tumour response.The status of estrogen receptor(ER), progesterone receptor (PR) and human epidermal growth factor receptor 2 (HER2) were recorded before underwent NAC.The t test and Pearson chi-squared test were used to compare the baseline characteristics of the pCR and Non-pCR groups.The kappa test was used to test the inter-observer agreement.The Wilcoxon test was used to test for changes of BPE categories after NAC.The Mann-Whitney U test was used to test the difference of BPE between pre-and post-menopausal status. Associations were evaluated using Binary logistic regression models. Results Fifty nine patients achieved pCR, and 102 patients had residual disease (non-pCR). Age, tumor size, distribution of size, menopausal status and lymph node showed no significance between pCR and non-pCR groups(all P>0.05),while only ER/PR status and HER2 status had a significant difference (P>0.05 in both). Inter-observer agreement regarding BPE categorization was moderate and substantial before and after NAC(Kappa value 0.644 and 0.708).The level of BPE was higher in premenopausal than post-menopausal women both at baseline and after the 2nd cycle of NAC(P<0.01). Decreased BPE was observed in 106 cases(premenopausal 60 cases and postmenopausal 46 cases),and no change in BPE were observed in 55 cases (premenopausal 27 cases and postmenopausal 28 cases). A significant reduction in BPE was observed after the 2nd NAC cycle in the overall cases, pre-and post-menopausal cases (all P<0.01). Logistic model showed that hormonal receptor (HR) negative and HER-2 receptor at baseline and the change of BPE after NAC were the independent factors for predicting pCR. Conclusions Regardless of the menopausal status, BPE showed a reduction after NAC, and it can serve as an additional imaging biomarker of tumour response at an early stage of NAC.

Objective To investigate the possibility of neutrophil-to-lymphocyte ratio (NLR),platelet-to-lymphocyte ratio (PLR) and mean platelet volume (MPV) as biomarker for early atherosclerosis in patients with newly diagnosed type 2 diabetes.Methods 420 newly diagnosed type 2 diabetes were enrolled in the study.They were divided into three groups:patients with normal carotid artery were group A (n =152),patients with unilateral carotid plaque were group B (n =138),patients with bilateral carotid plaque were group C (n =130).Their neutrophil,lymphocyte,mean platelet volume,lipid and glucose,carotid intimal medial thickness (CIMT),ankle brachial index (ABI) were all performed in these individuals.Results Compared with group A,the age,systolic pressure,neutrophil count (NC),platelet count (PLT),NLR,PLR,low density lipoprotein-cholesterol (LDL-C),total cholesterol (TC),fasting blood glucose (FBG),hemoglobin A1c (HbA1c) and CIMT were higher while ABI were lower in group B and group C;Compared with group B,the age,systolic pressure,NC,PLT,NLR,PLR,LDL-C,TC,CIMT and were higher while ABI was lower in group C (P ＜ 0.05).CIMT was positively correlated to age,systolic pressure,NLR,PLR,LDL-C,TC,FBG and HbA1c (P ＜ 0.05) while ABI was negtively correlated to age,NLR,PLR,LDL-C,FBG and HbA1c (P ＜ 0.05).In multiple linear regression analyses,after adjustment for age,lipid,glucose and so on,NLR and PLR were also significantly correlated to CIMT and ABI.Conclusions NLR and PLR were significantly correlated with CIMT and ABI in newly diagnosed type 2 diabetes.Therefore,NLR and PLR may have the potential to serve as biomarkers for early arteriosclerosis in type 2 diabetic patients.

Objective To investigate the diagnostic value and characteristics of breast lesion in digital breast tomosynthesis (DBT) in combination with synthesized two-dimensional (2D) images. Methods The prospective study enrolled women older than 18 years with clinically suspected breast lesion.One hundred and sixty seven patients with 177 lesions confirmed by biopsy or surgery were included. All the patients underwent full-field digital mammography(FFDM)and DBT examinations,and synthesized 2D images(V-preview)were reconstructed from DBT.The images of FFDM,V-preview images and DBT plus FFDM, V-preview images were analyzed. The breast imaging reporting and data system (BI-RADS) and characteristic for predicting benign and malignant lesion were also evaluated.The average glandular dose for a single mammographic view between FFDM and DBT was recorded.The Nonparametric Z test was used to compare the differences among four different mammographic images in BI-RADS.The differential diagnostic performance among different mammography was evaluated by ROC analysis.Independent t test was used to compare the average glandular dose between FFDM and DBT.Results One hundred three benign lesions and 74 malignant lesions were confirmed. Compared with FFDM images alone or plus DBT,the diagnostic values of V-preview images alone/or plus DBT were not significantly different(Z=0.187 and 0.226,P=0.851 and 0.821), but compared with V-preview, the diagnostic values of V-preview images plus DBT revealed significant difference(Z=3.546,P<0.01).The area under ROC for V-preview plus DBT were 0.899,and the sensitivity,specificity,and accuracy were 90.5%,89.3%,and 89.3%,separately.For the average glandular dose, there was no significant difference between FFDM (1.48 ± 0.52) mGy and DBT (1.56 ± 0.39) mGy examination(t=1.714,P=0.087).Conclusion Synthesized 2D images from DBT,which may eliminate the need for FFDM,in combination with DBT can improve the diagnostic efficiency.

ObjectiveTo assess the effects of constraint-induced movement therapy(CIMT) on sub-acute stroke patients with upper extremity motor dysfunction.Methods63 patients with hemiplegia after stroke were divided into two groups: control group(31 cases) and CIMT group(32 casese). The two groups received the regular rehabilitation training for 14 d. Then the control group went on the the regular rehabilitation training, while the CIMT group received CIMT for 14 d. All patients were assessed by the Action Research Arm Test(ARAT) and Fugl-Meyer(FMA) on the first day, the 15th day and the 30th day after the treatment.ResultsARAT score and FMA scores were higher in CIMT group than in the control group 30 d after the treatment and in CIMT group 15 days after the treatment(P<0.001).ConclusionCIMT is more effective to improve the upper limb motor function of the sub-acute stroke patients than the regular rehabilitation training.

Objective To investigate the prevalence of metabolic syndrome (MS) and its components among the elderly at Tanggu community in Tainjin. Methods The elderly inhabitants were drawn out randomly from one community at Tanggu in Tianjin to examine the MS-related indexes. There were 623 samples with complete data aged (67.4±6.0) years, including 261 males with mean age of (68.3±6.1) years and 362 females with mean age of (66.9±6.0) years. Diagnosis of MS was done by criteria of Chinese Medical Association Diabetes Branch in 2004. Results The standardized prevalence of MS for the elderly in the community was 18.5% with the highest risk group aged 60～69 years. Standardized prevalences of hypertension, high triglycerides, high blood sugar, overweight, obesity, low HDL-C were 49.5%, 38.8%, 25.3%, 42.0%, 4.2%, 3.0% in the elderly. Conclusions The prevalence of MS in the elderly is lower in Tanggu community in Tianjin than in Shanghai, Foshan in Guangdong, Qingdao in Shandong and Beijing city. The condition in female is more severe than in male, the highest prevalence occurs in hypertension, and overweight, high triglycerides and high blood sugar follow it, but few of them are obesity, low HDL-C is fewer too.

Objective To discuss the values of three screening methods for the detection of early breast cancer,and to analyze the features of the screening cancer.Methods The first screening of breast cancer were performed in 5307 women who aged from 20 to 76 years with median age of 49 years.The three screening methods included physical examination with ultrasound and mammography,physical examination with mammography and mammography only.The rate of recall,biopsy,cancer detection of three methods were analyzed and the mammographic findings were reviewed Chi-square test or Fisher's exact test were used for the statistics.Results The recall rates were 4.90% (49/1001),6.90%(166/2407)and 4.48% (85/1899) in three methods respectively,the biopsy rates were 1.60% (16/1001),1.04% (25/2407) and 0.63%(12/1899),the cancer detection rates were 0.50% (5/1001),0.17% (4/2407) and 0 (0/1899).There were statistical differences among the three groups (X2=12.99,6.264,8.764,P < 0.05).Physical examination with ultrasound and mammnography had the highest cancer detection rate,ten breast cancers were detected and 8 were early stage breast cancer.Of seven cancers detected by mammography,only two were found by ultrasound.A cluster of calcifications were found in 2 cases,linear calcifications in 2 cases.One case presented as a asymmetric density,one as a asymmetric density with calcifications,one as multiple nodules with a duster of calcifications.Two breast cancers presented as asymmetric density were missed on mammography and diagnosed correctly after retrospective review.Conclusion Physical examination with ultrasound and mammography is the best method for breast cancer screening.The breast cancer can be detected by mammography earlier than other methods.