Objective:To explore the significance of blood dialysis device for real-time monitoring of dialysate temperature.Methods: Nikkiso DBB-27-type hemodialysis device was selected as a subject for discussion, analyzed and discussed the working principle, main structure and functional characteristics of the mixture ratio of dialysate and temperature monitor and combined with one case of temperature troubleshooting case.Results: Temperature monitoring was essential to ensure the stable running of dialysate mixture ratio and the temperature of the dialysate.Conclusion: The dialysate temperature has an important effect on renal fibrosis in end-stage hemodialysis patients, it is necessary to monitor the dialysate temperature and mixture ratio. Dialysis device heating degas proportioning system through surveillance system linked to the dialysis unit normal, stable operation, provide safe and reliable dialysis treatment for patients.

Objective To evaluate the capability of strain rate imaging(SRI)for monitoring regional systolic deformation and synchronicity of left ventricle after coronary artery bypass graft(CABG)and for evaluating effect of surgery and predicting restenosis.Methods The values of systolic strain rate(SRsys),systolic strain(Ssys)and post systolic strain index(PSI)in 5 segments supplied by left anterior descending coronary artery were measured in study group(60 patients with coronary artery disease)at 1 day before and 10 days,1 month,3 months and 6 months after CABG.Forty healthy participants served as a baseline control group.The regional myocardial function before and after CABG was compared and analyzed.Results The peak values of SRsys and Ssys decreased before CABG in study group.In 52 of the 60 patients,SRsys and Ssys in the graft segments increased gradually and showed statistical significance in most studied segments at 3 and 6 months after surgery.In the above 52 patients,value of PSI increased before CABG and reduced significantly in all analyzed segments at 6 months after surgery.The restenosis of graft artery was suspected in 8 patients by SRI and the positive predictive value was 75%.The diagnosis sensitivity of SRI parameter method was higher than that of 2-dimensional echocardiography and the sensitivity of Ssys was higher than that of SRsys.Conclusions SRI can be used to quantitatively assess the regionsl systolic deformation and synchronicity and monitor the improvement of myocardial function after CABG and determine the effect of surgery and predict restenosis of graft artery.

Objective To evaluate the changes of ventricular synchrony in patients with acute myocardial infarction(AMI)before and after percutaneous coronary intervention(PCI)by speckle tracking imaging(STI).Methods Thirty patients with AMI were examined by traditional echocardiography and STI before and 5 d,1 month after PCI.Myocardial imaging of left ventricular apical long views and parasternal left ventricular short axis views were recorded and stored.The time to peak longitudinal systolic and diastolic strain rate(TS-SRL,TE-SRL)and to peak radial systolic and diastolic strain rate(TS-SRR,TESRR)were measured respectively.The differences of the maximum and minimum systolic and early diastolic peak time(TSL-diff,TER-diff)and the standard deviation(TSL-SD,TER-SD)in 18 longitudinal segments were calculated.And the differences and standard deviation of TS-SRR and TE-SRR(TSR-diff,TSR-SD,TER-diff,TER-SD)were calculated also.These parameters were compared before and after PCI.Results Compared with before and 5 d after PCI,the values of TSL-diff,TSL-SD,TEL-diff and TEL-SD in 1 month after PCI were decreased significantly(P＜0.01).TSR-diff,TSR-SD,TER-diff and TER-SD were decreased also and the differences had statistical significance(P＜0.01).The cardiac synchronized index and LVEF values showed good negative correlation.Conclusions The systolic and diastolic synchrony of left ventricle in AMI patients was abnormal.STI can evaluate left ventricular synchronized function and the changes before and after PCI to assess the effect of PCI.

Objective To investigate CT image features of pleomorphic adenoma and adenolymphoma,and to improve the diagno-sis accuracy.Methods CT data of 1 3 cases of pleomorphic adenomas and 9 cases of adenolymphomas confirmed by pathology were retrospectively analyzed and compared.Results All 1 3 cases of pleomorphic adeonoma were solitary lesions,in which 1 1 cases were located in the non posterior inferior quadrant,and 1 1 cases showed persistent or delayed enhancement,with “slowly forward and slowly quit”enhancement performance.In all of the 9 cases of adenolymphoma,3 cases were multiple lesions.In total of 1 3 lesions, 9 lesions were located in the posterior inferior quadrant,and 9 lesions were significantly enhanced in the arterial phase and enhance-ment was decreased in the delayed phase,which showed “quickly forward and quickly quit”.Conclusion CT image features of pleo-morphic adenoma and adenolymphoma are different.Most of lesions can be diagnosed correctly before surgery by using image fea-tures with clinical information.

Objective To study the X-ray and CT representations of primary malignant lymphoma of bone.Methods X-ray and CT representations of primary malignant lympoma of bone in 27 cases proved by operation and pathology,combined with clinic manifestations,operation and pathology were analysed.Results The tumors located in vertebra were 14 cases(51.9%),in tubular bone were 9 cases(33.3%).The imaging findings included bone destroy in 85.7%,bone sclerosis in 7%;only 4 cases appeared light periosteous reaction;one case appeared multiple focuses.Conclusion When the dissolved bone destruction without periosteous reaction,presented soft tissue mass in vertebras or tubular bone are showed on X-ray films or CT,the possibility of bone lymphoma shonld be considered,but this neoplasm is lack of characteristic imaging features.

Objective:To investigate the preventive efficacy of pirfenidone in esophageal stent-related restenosis and the related underlying mechanisms.Methods:Twenty-four rats underwent esophageal stent placement were included in this study. The rats were randomly assigned to three groups, with 8 rats in each group. The three groups were set to receive placebo, 150 mg/kg pirfenidone and 300 mg/kg pirfenidone daily by oral administration for 28 days, respectively. Twenty-eight days after stent placement, the stented esophagi were harvested for histological examinations. The number of epithelial layers, the thickness of submucosal fibrosis, the percentage of granulation tissue area, the degree of inflammatory cell infiltration, the degree of collagen deposition, and the α-SMA staining scores were evaluated. One-way ANOVA was performed for the statistical comparison of the number of epithelial layers, the degree of inflammatory cell infiltration, the degree of collagen deposition and the α-SMA staining scores among these three groups. The Kruskal-Wallis H test was used for comparison of the thickness of submucosal fibrosis and the percentage of granulation tissue area among the three groups. Results:Gross pathological findings showed that both pirfenidone groups had significantly less luminal fibrotic tissue formation and restenosis than placebo group. The percentage of granulation tissue areas in placebo group, 150 mg/kg and 300 mg/kg pirfenidone groups were 57.23%±25.68%, 21.80%±6.65% and 12.18%±6.37%, respectively. Both pirfenidone groups showed significantly less granulation tissue areas than placebo group ( P<0.01). The degree of inflammatory cell infiltration, the degree of collagen deposition and the α-SMA staining scores were 3.28±0.55, 3.38±0.63 and 2.75±0.38 in placebo group, 2.30±0.46, 2.36±0.58 and 2.00±0.42 in 150 mg/kg pirfenidone group, and 1.86±0.38, 1.91±0.41 and 1.57±0.28 in 300 mg/kg pirfenidone group, respectively. Both pirfenidone groups showed significantly less inflammatory cell infiltration, collagen deposition and α-SMA staining scores than placebo group ( P<0.01). Conclusion:Pirfenidone can suppress esophageal stent-related restenosis in rats by significantly inhibiting inflammation, myofibroblast activation and proliferation, and fibrotic tissue formation.

Objective:To compare the effects of auricular point intradermal needling with auricular point sticking on digestive symptoms and quality of life in patients undergoing platinum-based chemotherapy regimens. Methods:Ninety-six patients receiving platinum-based chemotherapy were randomly assigned to three groups using the random number table method,with 32 cases in each group.The control group received conventional nursing care plus 5-hydroxytryptamine receptor antagonist,and the other two groups received additional auricular point intradermal needling or sticking.For the three groups of participants,the acute and delayed vomiting and nausea severity,quality of life,and the additional antiemetic consumption rate were observed. Results:The three groups had no significant differences in the acute vomiting frequency and nausea severity and appetite(P>0.05)but had significant differences in the delayed vomiting frequency and nausea severity(P<0.05);the auricular point intradermal needling group won over the auricular point sticking group.The three groups showed significant differences in comparing the appetite in the delayed stage(P<0.05);both auricular point intradermal needling and sticking groups showed advantages over the control group(P<0.05),but no significant difference existed between the auricular point intradermal needling and sticking groups(P>0.05).There were significant differences in comparing the functional living index-emesis(FLIE)score in both acute and delayed stages among the three groups(P<0.05)and the result favored the auricular point intradermal needling group over the auricular point sticking group(P<0.05).The additional antiemetic consumption rate was higher in the control group than in the other groups(P<0.05). Conclusion:Based on the conventional nursing and 5-hydroxytryptamine receptor antagonist,adding either auricular point intradermal needling or auricular point sticking can lower the vomiting frequency and nausea severity in the delayed stage and improve appetite in patients receiving platinum-based chemotherapy regimen,but they have no notable impact on digestive symptoms in the acute stage;auricular point intradermal needling is superior to auricular point sticking in comparing the overall efficacy.Both auricular point intradermal needling and auricular point sticking can enhance the quality of life in patients undergoing chemotherapy and reduce their additional antiemetic consumption.

Biological chemistry of Chinese herbal germplasm resources (BCCHGR) is a new cross-discipline formed from rapid development of modern science and technology and its application in the area of Chinese herbal resources. BCCHGR was defined as probing and understanding biological processes like heredity, gene transcription, expression and metabolism of Chinese herbal germplasm, at the interface of biochemistry, molecular biology and chemistry, elu-cidating the nature of Chinese herbal germplasm using as TCM medicine as well as the forming mechanism thereof. In this paper, the scientific background, definition, significance and contents of BCCHGR were discussed to depict a preliminary picture of BCCHGR and arouse popular consideration and discussions.

Objective To evaluate left ventricular myocardial function of rabbit after ischemiareperfusion using speckle tracking imaging (STI),and to explore the myocardial protect effects of ischemia postconditioning (I-PostC) on reperfusion injury.Methods 24 Japanese rabbits were divided into ischemiareperfusion group (group Ⅰ) and I-PostC group (group Ⅱ) randomly.The characteristic changes of left ventricular global and regional myocardial strain and twist function of two groups were evaluated quantitatively by STI and compared with pathological results.Results ① Global longitudinal systolic strain rate(GLSrsys),global longitudinal systolic strain (GLSsys) and global longitudinal peak strain(GLSp) decreased in both groups,longitudinal systolic strain rate(SrLsys),longitudinal systolic strain(SLsys) and longitudinal peak strain(SLp) in the lateral wall of left ventricle decreased significantly and negative peak of SrLivr and PSI increased after the left ventricular branch of coronary artery was occluded;The values of Ptw and untwR of left ventricle were smaller.② After the artery was released,GLSp recovered in group Ⅱ,which was not seen in group Ⅰ.The values of SrLsys,SLsys and SLp increased significantly and negative peak of SrLivr and PSI decreased in group Ⅱ.However,only Slsys and SLp rebounded in group Ⅰ.Between the 2 groups,SrLsys andSLp in group Ⅱ were higher than that of group Ⅰ (P＜0.05 or 0.01),and SrLivr was lower compared with group Ⅰ (P ＜0.05).In group Ⅱ,Ptw and untwR changed back to a normal range (P ＜0.05 or 0.01),and no index has changed in group Ⅰ ;Between the 2 groups,Ptw and untwR in group Ⅱ were higher than that of group Ⅰ (P ＜0.05).③ The sensitivity and specificity of GLSrsys,GLSsys,SrLsys,SLsys and Ptw to detect rabbit myocardial infarction were 81.3 ％ and 75.0 ％,62.5 ％ and 81.2％,87.5％ and 87.5％,93.8％ and 75.0％,81.3％ and 68.7％ respectively.Conclusions STI may provide a promising approach to evaluate the global and regional myocardial function.It also can observe the protect effects of I-PostC on myocardial reperfusion injury accurately.

Objective:To explore the relationship between mobile phone addiction and perceived stress, negative emotion, social support and psychological capital in college students, especially to clarify the internal mechanism of these variables.Methods:A total of 836 college students were investigated with mobile phone addiction index scale, positive psychological capital questionnaire, stress perception scale, positive and negative emotion scale and perceived social support scale.SPSS 22.0 software was used for correlation analysis and SPSS-PROCESS was used to analyze the mediating effect and moderating effect.Results:(1)The scores of psychological capital and perceived stress were(123.38±17.96)and(38.76±6.39)respectively, and the scores of negative emotion, social support and mobile phone addiction were(22.46±6.45), (63.36±12.40)and(39.31±10.01)respectively.Psychological capital was negatively correlated with perceived stress, negative emotion and mobile phone addiction( r=-0.66, -0.37, -0.28, all P<0.01).Perceived stress was positively correlated with negative emotion and mobile phone addiction( r=0.50, 0.38, both P<0.01).Social support was positively correlated with psychological capital( r=0.50, P<0.01), while negatively correlated with perceived stress, negative emotion and mobile phone addiction( r=-0.41, -0.30, -0.12, all P<0.01).(2)Psychological capital influenced mobile phone addiction by the mediating effect of perceived stress( β=-0.20, SE=0.03, 95% CI: -0.27--0.13).In addition, psychological capital influenced mobile phone addiction through the chain mediating effect of perceived stress and negative emotion( β=-0.04, SE=0.01, 95% CI: -0.06--0.01).Moreover, the mediating effect of psychological capital on stress perception was moderated by social support. Conclusion:Perceived stress and negative emotion are important mediations between psychological capital and mobile phone addiction.Social support can moderate the effect of psychological capital on perceived stress.