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Objective@#To understand the status of blood-borne occupational exposure and protection among health care workers (HCWs) in dental practice, and provide evidence for making effective prevention.@*Methods@#From April 1 to 15, 2019, a stratified random sampling method was conducted to investigate the data of blood-borne occupational exposure among 221 dental HCWs in 2018, and Chi-squared Test was used to evaluate the differences of status on occupational exposure and protection among different professionals, such as nurses, doctors and trainees, and among different-grade hospitals.@*Results@#A total of 166 HCWs were exposed to occupational exposure 269 times, with the annual incidence of 75.11% (166/221) , and 37.55% (101/269) of exposures were reported. However, all source patients of exposures had failed to be traced. 89.59% (241/269) of exposures were sharp injuries. The top three instruments caused injuries were syringe/bilan needles, suture needles and vehicle needles, accounting for 35.68% (86/241) 、16.60% (40/241) and 16.18% (39/241) , respectively; and the top three exposure operations were removal/disposal of needles or instruments, suture/assisting suture and injection of anesthetic, accounting for 37.17% (100/269) 、22.30% (60/269) and 17.84% (48/269) , respectively. There were statistically significant differences among different professionals in occupational exposure frequency, reporting rate, the types of instruments caused injuries, exposure operations and hepatitis B vaccinated time (P<0.01) . The compliance rate of standard precautions, safe operation, post-exposure reporting and prevention, and training on occupational protection were generally poor among HCWs, with significant differences in different-grade hospitals (P<0.01) .@*Conclusion@#There is a high incidence, low reporting rate and poor self-protection of blood-borne occupational exposure among dental HCWs. Strongly suggesting that standard precautions, safe use and disposal of oral instruments, active post-exposure report and prevention must be improved for everyone.
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Objective: To investigate the association of periodontal diseases in pregnant women with preterm birth and low birth weight. Methods: 213 pregnant women aged 22-40 years were enrolled while receiving periodontal examination by 26 weeks of gestation. Periodontal measurements included plaque index(PLI),bleeding on probing (BOP),probing pocket depth(PD) and clinical attachment loss(CAL) were used as the criteria to classify the groups: healthy group(HG; n = 63),gingivitis group(GG; n = 74) and periodontitis group(PG; n = 76). At delivery,birth date and birth weight were recorded. Results: Preterm birth ratio in PG group is higher than that in HG group and GG group(P ＜ 0. 05). Conclusion: Periodontal disease may lead to preterm birth in pregnant women.
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Objective:To investigate the association of arginase Ⅰ(ArgⅠ)rs2781 666 G/T genotype with the susceptibility of mod-erate and severe chronic periodontitis(MSP)and coronary heart disease(CHD).Methods:DNA was obtained from buccal swabs of 50 patients with MSP,46 with CHD,42 with MSP and CHD,and 50 matched healthy controls.Genotypes of rs2781 666 G/T was analyzed by PCR-PFLP method.The genotype distribution in the 4 groups was compared.Results:Higher representation of ArgⅠrs2781 666 al-lele T was found in CHD group than that in the healthy control individuals(P <0.01 ),and there was no statistical differences among the other 3 groups.Conclusion:Allele T of ArgⅠrs2781 666 may be associated with CHD susceptibility.
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BACKGROUND:Nano-hydroxyapatite as a surface modification material that is bonded to the surface of the zirconia ceramics upon sintering at high temperature can improve bone-inducing activity and bone bonding strength of the zirconia ceramics. Moreover, the sintering temperature is crucial for performance and bonding of the composite. OBJECTIVE:To detect the shear strength of nano-hydroxyapatite ceramics coating bonded to zirconia ceramics at different sintering temperatures. METHODS:Nano-hydroxyapatite slurry was prepared using sol/gel technology. Thereafter, 20 zirconium green bodies were coated with nano-hydroxyapatite slurry and randomly divided into four groups. Then, the specimens were put into non-pressure sintering furnace and sintered at 1 300, 1 400, 1 500, and 1 550℃, respectively. At last, we measured the shear strength of al the specimens after sintering by universal testing machine, and analyze the type of fractures. RESULTS AND CONCLUSION: With the rising of sintering temperature, the shear strength of the specimens was gradualy increased, and there were significant differences between the four groups [(4.04±1.19), (6.60±0.95), (16.51±1.93), (80.47±19.31) MPa,P < 0.05]. Within the scope of 1 550℃, the sintering temperature was positively relative to the shear strength of specimens. These findings indicate that in the certain temperature range, the higher the sintering temperature, the greater the shear strength of the bonding interface between zirconia and nano-hydroxyapatite. When the sintering temperature is 1 550℃, the shear strength of the bonding interface is the highest.
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Cancer patients need not only advanced therapeutic method but also spiritual counseling. Therefore clinical nurses need to analyze the negative psychological status and discuss the effect of psychological support and intervention on the improvement of patients' psychological burden, thus to establish effective intervention plans for patients. A total of 30 patients with cancer were selected for study. They were divided into blank group, intervention group and control group. Patients in three groups were orally administrated amitriptyline if necessary. Patients in blank group directly filled in the form of self-perceived burden and self-made questionnaire of general material of patients. Different groups were interfered with psychological support in different patterns for 3 months. The differences of SPB experience, MCMQ and QLQ-CCC in two groups were compared respectively. It was found that SPB score of cancer patients in blank group was in moderate level of burden, while SPB score in intervention group and control group were relatively lower, and score of MCMQ and QLO-CCC in intervention group were higher than that in control group. It was concluded that the experience of self-perceived burden existed in most cancer chemotherapy patients. Psychological support and intervention can obviously reduce the SPB experience of cancer patients and improve patients' living quality
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Objective To investigate the life quality changes and influencing factors of acute coronary syn -drome after stent implantation .Methods 100 cases with acute coronary syndrome received stent implantation were selected .SF-36 life quality questionnaire was used to survey the patients′life quality before operation and 6 months af-ter operation,and the life quality changes and influence factors were analyzed .Results 6 months after operation,the physical activity ,mental health ,social activities ,physical pain ,physical function ,physical role ,energy and health score of the patients were higher than before operation (P<0.05).According to Logistic regression analysis ,female,type 2 diabetes,underwent percutaneous coronary intervention ,ST-T segment elevation myocardial infarction were the im-portant factors affecting patients′recovery(P<0.05).Conclusion 6 months after stent implantation,the life quality of the patients with acute coronary syndrome were improved obviously;the female and underwent percutaneous coro-nary intervention have positive influence on patients′recovery,while type 2 diabetes,ST-T segment elevation myocar-dial infarction affect patients′recovery in negative way .
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Objective To evaluate the effects of aerobic exercised on patients with depression.Methods Patients with depression according to the Chinese classification of mental disorders criteria were recruited during January 2011 to December 2012.Patients were divided into exercise group and control group randomly.The Hamilton Depression Rating Scale (HAMD) was used to evaluate the depressive symptom of patients.Patients in exercise group were divided into low intensity aerobic exercise,3 sessions per week and 5 sessions per week,and high intensity aerobic exercise 3 sessions per week and 5 sessions per week.Stretching exercises worked as a control.The four exercise groups were compared with stretching exercise group with efficiency.The control group was treated with pharmacotherapy and psychotherapy.The HAMD scores of aerobic exercise group with different intensity and frequency were compared with the scores of control group after the 1,2,4and 6 weeks of treatment.Results High-dose exercise was more effective in treating depression compared with stretching(P ＜ 0.05),but low-dose exercise did not produce the desired benefits.The scores of patients with high intensity aerobic exercise 3 sessions per week were significantly different from scores of control group after 6 weeks treatment,and the scores of HAMD were (10.72 ± 2.45) and (15.22 ± 4.13).The scores of patients with high intensity aerobic exercise 5 sessions per week were significantly different from scores of control group after 4 weeks treatment,and the scores of HAMD were (14.15 ± 3.25)and(18.31 ± 3.32).Conclusion High intensity and high frequency aerobic exercise could significantly reduce depressive symptoms.
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Difficult cases are frequently found at the department of internal medicine of large hospitals.Better quality of ward-rounds by these department heads is key to medical safety,to better operations,and to reducing medical disputes incurred by malpractice.Focusing on standardizing wardround behavior and medical records,the People's Liberation Army General Hospital established and applied the Quality Standards of Ward-rounds on difficulty cases,which scored expected outcomes of better quality of care and better patient satisfaction.
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Objective To investigate the clinical and neuroimaging features of Vogt-KoyanagiHarada syndrome ( VKH ).Methods Cerebrospinal fluid ( CSF ), neuroimaging examination, clinical manifestation and pharmacotherapy features were investigated in 5 patients diagnosed as VKH. ResultsAll 5 patients were diagnosed as uveitis in the early stage of disease.All patients suffered “ headache”.Meningeal irritation sign was appeared in 3 cases. The MRI enhanced scan of all 5 cases showed abnormal enhancement of meninges. CSF examination showed increased leukocyte number ((4--196) × 106/L). All patients were alleviatedwith combination therapyof high dose of steroid with cyclophosphamide.ConclusionsVKH is a systemic disease that usually involving the uvea, central nervous system, internal ear and the skin. MRI and CSF examination are valuable for diagnosis. High dose of steroid combined with cyclophosphamide is an effective therapeutic strategy.
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Objective To explore the efficacy and safety of anxiety, depression, insomnia and other psychological and physical symptoms after trazodone treated in patients with alcohol dependence. Methods 100 patients whose met the inclusion and exclusion criteria were divided into trazodone group and the placebo group with a randomized, double-blind, placebo-controlled method. Each of the patients was oral trazodone, or placebo 3 times a day, each time a course of treatment was 8 weeks. Hamilton Anxiety Scale ( HAM A) , Hamilton Depression Rating Scale(HAMD) , Pittsburgh Sleep Quality Index(PSQI) , side effects scale (TESS) score and the necessary examinations were used to assess. Survey the re-drink situation after 1 year. Results 81 patients completed treatment, 19 patients were discharged or lost due to early treatment failure loss. In Trazodone group (41 cases) , the HAMA, HAMD and PSQI score before treatment and after treatment, total scores decreased gradually after 2 weeks of the three score and comfort dose group (40 cases) were the difference was statistically significant (P 0. 05 ). Conclusion Improve trazodone treat alcohol dependence withdrawal anxiety, depression and insomnia effectively. Found no adverse drug reactions and the safety is high. Reduce the recovery drink.
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Objective To investigate some water soluble vitamin nutrition status of old people in Shangqiu and explore the improving ways. Methods A dietary survey was carried out and urinary VB1, VB2 and VC were test-ed. Results The intakes of VB1 ,VB2 and VC were much lower than the recommended amounts. Conclusion The intakes of VB1 ,VB2 and VC were seriously deficient in old people and preventive measures should be taken such as intaking fresh vegitable, fruits and coarse food grain.
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The developmental speed,scale,structure,and efficiency of postgraduate education in recent 20 years in military medical universities were described and compared with those in the other universities in China.We also discussed the advantages and insufficiency of postgraduate education in military medical universities and investigated primarily the mutual relationship between the speed,structure,and the scale,so as to lay basis for formulating the further developing strategies.
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OBJECTIVE:To observe the efficacy of the reduced glutathione against hepatic lesion induced by antituberculotic agents.METHODS:A total of 226 patients with pulmonary tuberculosis undergoing short- course chemotherapy were randomly assigned to receive antituberculotic agents plus reduced glutathione throughout the course(treatment group,n = 114 cases) or to receive Inosine plus Glucurolactone(control group,n = 112).The patients were followed for 3～6 months with the incidence of hepatic lesion compared between the two groups.RESULTS:There were significant differences between the treatment group and the control group in the incidence of hepatic lesion,6 cases(5.3%) in treatment group vs.29 cases (25.9%) in the control group(P
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D-glucosamine has biological activity. The progress in study and application of D-glucosamine derivatives in the field of biology and medicine was reviewed in this paper.
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Objective To isolate and determine the structures of chemical constituents from the roots and rootstalks of Rheum emodi.Methods The chemical constituents were isolated and purified by silica gel and polyamide column chromatography.Chemical methods and spectroscopic methods,such as 1H-NMR,13C-NMR,and MS spectra were used for the structure identification.Results Eighteen compounds were obtained.Sixteen of them were identified as:chrysophanol(1),physcion(2),?-sitosterol(3),emodin(4),aloe-emodin(5),rheumin(6),daucosterol(7),d-catechin(8),piceatannol(9),piceatannol-4'-O-?-D-glucopyranoside(10),piceatannol-4'-O-?-D-(6″-O-p-coumaroyl)-glucopyranoside(11),chrysophanol-8-O-?-D-glucopyranoside(12),physcion-1 and 8-O-?-D-glucopyranoside(13a and 13b),emodin-8-O-?-D-glucopyranoside(14),and sucrose(15).Meanwhile,one compound structure simi-lar to rhein was detected.Conclusion Compound 11 is a new compound named rheoside,compounds 13a and 13b are obtained from R.emodi for the first time.
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Objective To purify and rejuvenate the plant of Curcama kwangsiensis,improve the transplantation survival rate of cultivars,and make the convenience of storagement and management for the cultivars production.Methods The rhizome plantlet formation of C.kwangsiensis was induced by regulating both of macro-element and sucrose concentration in the MS culture medium.Results Both of them were very important influence factors on the rhizome plantlet formation of C.kwangsiensis.Media 1/2 MS and 6% sucrose were adaptable to the rhizome plantlet formation of C.kwangsiensis,had the best effects on the formation rate of the rhizome plantlet,diameter and direct transplanting rate of the rhizome plantlet.Both plantlet and root system development were stronger.Conclusion In the present research,it is successful in inducing the rhizome plantlet formation of C.kwangsiensis.