Objective To study and analyze the clinical efficacy of metoprolol combined with trimetazidine in the treatment of coronary heart disease and heart failure. Methods 80 patients with coronary heart disease and heart failure treated in our hospital from January 2015 to December 2016 were selected and randomly divided into the control group and the experimental group, with 40 cases in each group. The control group received routine treatment, including diuretics and angiotensin converting enzyme inhibitors, and the experimental group was treated with trimetazidine combined with metoprolol. The therapeutic effects of the two groups were compared and analyzed. Results After the corresponding treatment, 5 patients in the experimental group were invalid. In the control group, 14 patients were ineffective. The effective rate of treatment in the experimental group (87.5％) was significantly higher than that in the control group (65.0％), the differences were statistically significant (P<0.05). After treatment, the LVEF in the experimental group was (50.4 ± 7.7)％, and the LVEF in the control group was (45.1 ± 7.0)％. In addition, the LVEDD and LVESD indexes and LVEF in the experimental group were better than those in the control group, the differences were statistically significant (P<0.05). Conclusion The clinical effect of trimetazidine combined with metoprolol in the treatment of coronary heart disease and heart failure is better. It can improve the efficiency of treatment to some extent, and has the significance of further promotion and application.

Objective To explore the relationship between sperm DNA fragmentation rates and male infertil-ity.Methods Case -control study was used .Sperm DNA fragmentation rates were compared between the primary infertile males for unknown reasons (n=126) and the males whose spouses undergoing delivery in three months (n=100).Results Sperm DNA fragmentation rate of the research group was (11.95 ±4.89) %.Sperm DNA fragmenta-tion rate of the control group was (10.07 ±3.56) %.Significant difference was found between the two groups on sperm DNA fragmentation rate(t=-3.326,P=0.001).The 226 men were divided into group A with sperm DNA fragmentation rates<10%(n=130) and group B with sperm DNA fragmentation rates≥10%(n=96).The percent-age of male infertility in group A was significantly lower than that in group B (50.00%vs 61.62%) (χ2 =4.105, P=0.043).Conclusion Correlation is found between sperm DNA fragmentation rates and male infertility .

Objective To establish a HPLC method for simultaneous determination of seven constituents in Pifubingxuedu tablet.Methods The determination was performed on Kromasil-C18 column (4.6 mm × 250 mm, 5 μm).The mobile phase was acetonitrile-0.5％ phosphoric acid aqueous solution with a flow rate of 0.8ml/min.The detector was PDA and detection wavelength was set at 245,325,403 nm, respectively.Results A method has been established for the determination of chlorogenic acid, hydroxy Safflower Pigment A, paeoniflorin, forsythiaside A, ferulic acid, berberine and glycyrrhizin acid in one run by HPLC.Their average contents and RSD in each Pifubingxuedu tablet were 0.299 5 mg/tablet (2.25％);0.700 0 mg/tablet(1.33％);0.429 2 mg/tablet (1.21％);0.039 1 mg/tablet (2.34％);0.014 8 mg/tablet(2.23％);0.209 0 mg/tablet (2.06％);0.272 7 mg/tablet (2.68％), respectively.Conclusion The established method is simple, convenient, accurate and reliable.It is suitable for the quality control of Pifubingxuedu tablet.

Objective:To observe the feasibility of evaluating right ventricular (RV) function by the method based on left ventricle (LV) pressure-strain ring (PSL) technique in patients with systemic lupus erythematosus (SLE), and to evaluate the efficacy of non-invasive PSL in the diagnosis of dysfunction of both LV and RV.Methods:Thirty-nine patients were enrolled with SLE who were admitted to the Affiliated Hospital of Inner Mongolia Medical University from March 2020 to September 2021 and 57 sex- and age-matched healthy controls underwent assessment by conventional echocardiography, two-dimensional speckle tracking imaging (2D-STI) and myocardial work (MW). The echocardiographic parameters were compared between the groups. The correlations between RVMW parameters and conventional echocardiographic parameters, and between MW parameters and SLEDAI-2K score were analyzed by Spearman correlation analysis.Results:①The two groups did not show any difference at the conventional echocardiographic parameters of the LV systolic function ( P>0.05). In the SLE group, tricuspid regurgitation maximal velocity (TR V max) and right ventricular index of myocardial performance (RIMP) increased, tricuspid annular plane systolic excursion (TAPSE) and tricuspid annular S′ (S′ tv) decreased (all P<0.05), and others did not show statistical difference (all P>0.05). ②The 2D-STI parameters: There were no significant differences in left ventricular global longitudinal strain (LV GLS) ( P>0.05), however RVGLS decreased ( P<0.05). ③The MW parameters of LV and RV: including global constructive work (GCW), global work index (GWI), global wasted work (GWW), and global work efficiency (GWE). In SLE group, LV GWE, RV GWE decreased and LV GWW, RV GWW increased ( P<0.05), others were no significant differences ( P>0.05). ④The correlation analysis: RV GWI positively correlated with TR V max ( rs=0.481). RV GCW positively correlated with TR V max ( rs=0.587). RV GWW positively correlated with right atrial area (RAA) and TR V max ( rs=0.429, 0.610), negatively correlated with S′ tv ( rs=-0.342). RV GWE positively correlated with S′ tv ( rs=0.326) and negatively correlated with RAA ( rs=-0.462) (all P<0.05). SLEDAI-2K score was negatively correlated with LV GLS ( rs=-0.333) and LV GWI ( rs=-0.326) ( P<0.05). Conclusions:The study has shown the impaired systolic function of both LV and RV in patients with SLE. PSL technique, especially RVMV based on LV PSL technique might emerged as a novel measure to evaluate systolic dysfunction in SLE patients.

Objective: To evaluate, the method of different packing layer and sealing mode for the packaging of the infectious wastes in order to achieve better autoclave sterilization effect. Methods: In the autoclave cycles P4 and P9, different packing layer (single, double and triple) and sealing mode (slightly folded, autoclave tape, nylon tape closure) were applied to the internal infectious waste sterilization, biological indicators were used to detect the effect of autoclave sterilization of the upper, middle and lower layers, respectively. Results: 1) In the autoclave cycle P4, the triple autoclave bags packaging sealing method was based on the slight folding, autoclave tape, and nylon taple, the biological indicator negative rate of the internal infectious waste in the upper layer, the middle layer and the lower layer were respectively in the upper layer 100%, 0%, 0%, in the middle layer 67%, 20%, 0%, and in the lower layer was 0%. The double autoclave bags packaging sealing method was based on the slight folding, autoclave tape, and nylon taple, the biological indicator negative rate of the internal infectious waste in the upper layer, the middle layer and the lower layer were respectively the in the upper layer 100%, 85%, 0%, the middle layer 45%, 0%, 0%, and the lower layer 10%, 0%, 0%. the single autoclave bag packaging sealing method wa based on the slight folding, autoclave tape, and nylon taple, the biological indicator negative rate of the internal infectious waste in the upper, middle and lower layers were respectively the upper layer 100%, 100%, 0%, the middle layer 70%, 45%, 0%, and the lower layer 12.5%, 0%, 0%. (2) In the autoclave cycle P9, the triple autoclave bags packaging sealing method was based on the slight folding, autoclave tape, and nylon taple, the biological indicator negative rate of the internal infectious waste in the upper layer, middle and lower layers were respectively the upper layer all 100%, the middle layer 100%, 100%, 70%, and the lower layer 100%, 100%, 30%. The double autoclave bags packaging sealing method was based on the slight folding, autoclave tape, and nylon taple, the biological indicator negative rate of the internal infectious waste in the upper, middle and lower layers were respectively the upper layer all 100%, the middle layer all 100% and the lower layer is 100%, 100%, and 60%. The single autoclave bag packaging sealing method was based on the slight folding, autoclave tape, and nylon taple, the biological indicator negative rate of the internal infectious waste in the upper, middle and lower layers were all 100%. Conclusions When autoclave is recommended for sterilization of infectious waste, the best effect was achieved with a single unsealed autoclave bag. If it is necessary to seal, the autoclave bag should not be completely sealed, avoiding incomplete penetration of steam into the interior space, otherwise the infectious waste can not be completely sterilized.

Objective:To evaluate the application value of left ventricular pressure-strain loop (PSL) in patients with rheumatoid arthritis (RA) by the PSL.Methods:From April 2020 to June 2021, 75 RA patients(case group) and 35 healthy physical examination person(control group) were selected from the Affiliated Hospital of Inner Mongolia Medical University.According to the disease activity scores 28(DAS28) joint disease range of activity score, the patients were divided into low range of activity group (16 cases), medium range of activity group (35 cases) and high range of activity group (24 cases). Echocardiographic examinations were performed on all patients, conventional ultrasound data were collected and the left ventricular PSL technology was used to analyze the myocardial work parameters, including global work index (GWI), global constructive work (GCW), global waste work (GWW) and global work efficiency (GWE). The mean values of myocardial work index (MWI), constructive work (CW), waste work (WW) and work efficiency (WE) were calculated. The differences of myocardial work parameters between the case groups and the control group were compared, and the correlation analysis of myocardial work parameters with global longitudinal strain of left ventricle(LVGLS), left ventricular ejection fraction(LVEF) and DAS28 scores were conducted.Results:①There were no statistically significant differences of clinical data between each case group and the control group (all P>0.05). ②Compared with the control group and low disease activity group, the LVGLS of medium and high disease activity groups decreased obviously (all P<0.05). ③The GWI and GCW of the medium and high disease activity groups were significantly lower than those of the control group (all P<0.05), and there were no statistically significant differences of GWW and GWE between the case groups and the control group (all P>0.05). The mid-segment MWI, apical MWI and CW of the medium and high disease activity case groups, and the mid-segment CW of the medium disease activity case group were lower than those of the control group (all P<0.05). ④In the case group, GWI, GCW and LVEF were significantly and positively correlated ( rs1=0.253, P=0.008; rs2=0.261, P=0.024), and were significantly negatively correlated with LVGLS ( rs1=-0.525, P<0.001; rs2=0.455, P<0.001). There were no significant correlations between myocardial work parameters and DAS28 score (all P>0.05). Conclusions:PSL can early reflect to the impaired cardiac function of RA patients with moderate and high disease activity, and provide a new imaging method for clinical evaluation of the cardiac function of patients.

Objective: To investigate the relationship between maternal disease in early pregnancy of women of childbearing age and congenital heart disease of neonates. Methods: A cross-sectional design was used in this study and stratified multistage random sampling method was used. A questionnaire survey was conducted in the childbearing-aged women during 2010-2013 in Shaanxi province. Propensity score (PS) matched (1∶1) analysis was used to match participants with diseases to those without disease in early pregnancy. Through the control of the confounders step by step, a logistic regression model was established to evaluate the ORs of congenital heart disease according to the independent variable of maternal disease. Results: A total of 28 680 pairs of mothers and infants were included in this study, the proportion of the women with disease in early pregnancy was 20.25% (5 807). After PS matching, 5 436 pairs were matched. After adjusting all confounding factors, the multivariable logistic regression analysis results showed that maternal disease (OR=1.86, 95%CI: 1.23-2.81), especially cold (OR=2.19, 95%CI: 1.46-3.28), gynecological disease (OR=4.74, 95%CI: 2.03-11.09) and diabetes (OR=14.00, 95%CI: 1.64-119.21), in early pregnancy were the risk factors for congenital heart disease of neonate. Conclusion In women of childbearing age, disease in early pregnancy, especially cold, gynecological disease and diabetes, can increase the risk of congenital heart disease in neonates.

Autoantibody-related congenital heart block (ACHB) is a passively acquired autoimmune disease developing in fetuses after exposuring to maternal anti-Ro/Sj?gren's syndrome type A (SSA) antibody and/or anti-La/SSB antibody transported across the placenta, which contributes to fetal heart conduction system damage and signal conduction block at the atrioventricular node. However, fetal atrioventricular block does not necessarily occur with the presence of maternal autoantibodies, indicating its complex pathogenesis. This review focuses on the theories of calcium channels and apoptosis, the influence of other maternal factors and environmental changes on ACHB and the roles of natural killer cells and human leukocyte antigen in ACHB, aiming to provide reference for further study on the pathogenesis.

Nowadays,the application of ultrasound is not only used in clinical imaging,but also extended in the study of drug delivery.Diagnostic ultrasound combined with microbubbles can effectively open the biological barriers,which can enhance the targeted delivery of drugs and be beneficial to the combination of ultrasound and disease treatment.This review summarizes the biological effects of ultrasound,the characteristics of ultrasound microbubbles and the potential ability that solving the biological barrier problems in cancer therapy by using ultrasound targeted microbubble destruction,hoping to provide some reference for the further development of therapeutic ultrasound as a safe and effective drug targeted delivery strategy.