Objective To observe the effects of long-term Mulanquan exercise on antioxidative capacity and vasodilation.To elucidate the mechanism by which Mulanquan regulates endothelial endocrine function.To provide scientific evidence for Mulanquan's regulating blood pressure,improving cardiovascular function and preventing cardi- ovascular disease.Methods Forty-nine women volunteers were divided into an exercise group and a control group. They were fifty to sixty years old.The exercise group included 27 subjects who had practiced mulanquan regularly for at least two years.The control group comprised 22 subjects who had no habit of exercise.Their levels of serum ma- londialdehyde(MDA),superoxide dismutase(SOD),glutathione peroxidase(GSH-Px),catalase(CAT)and nitric ox- ide(NO)were quantitatively determined.Results①Serum MDA was lower in the exercise group than in the con- trol group,and the difference between the two groups was highly significant statistically.Serum SOD activity and GSH-Px activity in the exercise group were higher than in the control group,the differences between the two groups being highly significant statistically.There was no significant difference between the groups in serum CAT activity. The serum NO content of the exercise group was higher than that of the controls,with the inter-group difference statis- tically significant.②Serum NO content was positively correlated with SOD activity ,GSH-Px activity,and SOD/MDA, and negatively correlated with MDA content.Conclusion Long-term Mulanquan exercise can suppress lipid peroxi- dation in middle aged and aged women.It can help maintain high antioxidative capacity,increase the secretion of NO,and thus limit any decrease in endothelium-dependent vasodilatation,which will be good for regulating blood pressure and preventing cardiovascular disease.

Female ; Humans ; Maternal Health Services ; Maternal Mortality ; Pregnancy

OBJECTIVE： To observe the stability of mezlocillin sodium in 5％ glucose injection， glucose and sodium chloride injection and maintain solution for infants injection with different pH， over different periods and at 4℃ ， 25℃ ， 37℃ .METHODS： 9 solutions with different pH were made up by mezlocillin sodium and above-mentioned infusion fluids， according to 4 factors and 3 levels to make L9（34） orthogonal test.Then determination of mezlocillin sodium in each solution was carried out with ultraviolet spectrophotometry.RESULTS： The contents of mezlocillin sodium in above-mentioned solutions with different pH and at different temperature have not changed obviously over 0h-8h.CONCLUSION： Mezlocillin sodium is compatible with above-mentioned solutions.

Objective To observe the clinical features and visual function of recurrent neuromyelitis optica (NMO).Methods Thirty-four patients with NMO were enrolled in this retrospective case series study.The patients included two males and 32 females.The average first onset age was (35.03± 14.56) years old and the average recurrent rate were (4.24±2.45) times.The recurrent rate of optic neuritis (ON) ranged from two to 12 times.The recurrent rate of ON was two times in 15 eyes of 10 patients,≥three times in 37 eyes of 24 patients.Vision acuity,direct ophthalmoscope,fundus pre-set lens examination,visual field and visual evoked potential (VEP) were evaluated.Clinical features were observed.The abnormal rate of optic nerve including optic edema and atrophy; abnormal rate of visual field including decreasing retinal sensitivity,central and paracentral scotoma,ring scotoma,half field defects,tunnel visual field,visual field centrality constriction; abnormal rate of VEP including Prolonged latent phase and/or decreasing amplitude of P100 wave from patients of first episode or recurrence was analyzed.Serum NMO-IgG was detected from 28 patients hy indirect immunofluorescence technique to observe its positive rate.Results All patients were characterized by repeated episodes of ON and myelitis.The main clinical feature of ON was visual loss,and the main clinical features of myelitis included sensory disability,dyskinesia and vesicorectal disorder.Blindness rate was 41.67％ after the first attack of ON,33.33％ after two relapses,and 64.86％ after ≥ three relapses.The difference of blindness rate between first attack and two episodes was not significant (x2=0.270,P=0.603).However,the blindness rate in patients having ≥ three episodes was significantly higher than those having two episodes (x2=4.300,P=0.038).With recurrence rate increasing,the abnormal rate of the optic nerve (x2 =6.750,P =0.034) and VEP(x2 =6.990,P =0.030)increased.But the abnormal rate of visual field did not increase along with recurrent rate (x2 =0.660,P=0.718).Seropositive rate of NMO-IgG did not differ significantly between patients with first attack ON and that with recurrent ON (x2 =1.510,P =0.470).But the seropositive patients had significantly higher bilateral blindness rate than seronegative patients (x2=5.063,P=0.027).Conclusions NMO are characterized by recurrent ON and myelitis.Visual loss,sensory disability,dyskinesia and vesicorectal disorder are the main clinical features.With recurrence rate increasing,the blindness rate,abnormalities the optic nerve and the abnormity rate of VEP increase.Seropositive recurrent NMO patients have higher bilateral blindness rate than seronegative patients.

Objective: To design one kind of medical infusion pump. Methods: Based on single-chip microcomputer, 89C52, use the stepper motor to drive the semi extrusion micro flow pump. Results:During the infusion it can real-time monitor the block and bubble in the pipeline and alarm. It can accurately control the transfusion speed and infusion volume. With friendly man-machine interface it can display real-time infusion parameters and alarm signals. Conclusion: The infusion pump system has high precision and reliability, perfect function, and it is easy to use. Clinical practices show that it can effectively reduce the workload of the clinical nursing staff and improve work efficiency. It has high application value.

Objective To explore the clinical features,maternal and fetal outcome in preeclampsia complications.(Methods)Clinical data of 86 cases of preeclampsia complications in heart,liver,kidney and brain were analyzed retrospectively.All the patients were divided into two groups: early onset preeclampsia(EOPE) group,36 cases,onset gestational weeks

Abstract: Objective　To determine the rate of nasal carriage Staphylococcus aureus among healthcare workers in Department of Infectious Diseases department of the First Affiliated Hospital of Xi'an Jiaotong University Hospital, and to perform characterization on isolated strains. Methods　A cross-sectional study was performed on 86 healthcare workers from February 2022 to June. Nasal swabs were collected from the healthcare workers, and S. aureus were identified after incubation. Antibiotic susceptibility, including chlorhexidine and mupirocin, was assessed by disk diffusion and minimal inhibitory concentration method. The PCR technique was used to detect the biocide resistance genes (qacAB, smr, lmrS mepA, and sepA), virulence genes (pvl, fnbA/fnbB, sea, seb, sec, sed, tst, eta, etb) and mecA gene. SCCmec typing and multilocus sequence typing was performed. For mupirocin-resistant strains, PCR amplification and sequencing were used to identify whether the strains had ileS gene mutations or carried resistant genes (mupA and mupB). Results　S. aureus was isolated from 37 of the 86 healthcare workers (43.02%) , including 13 methicillin-resistant Staphylococcus aureus (MRSA) strains. The strains showed low resistance rates to levofloxacin (2.70%, 1/37), chloramphenicol (8.11%, 3/37), tetracycline (8.11%, 3/37), gentamicin (10.81%, 4/37), and ciprofloxacin (10.81%, 4/37). A total of 17 strains were identified as multidrug-resistant strains. Four SCCmec types were identified in MRSA strains, with the type II being the most frequent (53.85%, 7/13), followed by type IV (30.77%, 4/13). ST59 (46.15%, 6/13) was the most frequent among MRSA strains, while ST5 (41.67%, 10/24) was the most frequent among methicillin-susceptible S. aureus (MSSA) strains. sea was the most frequent virulence gene (56.76%, 21/37). sepA and mepA were detected in all 37 isolates. One Staphylococcus aureus strain was not sensitive to chlorhexidine, two strains had the missense mutation V588F (G1762T) and showed low level resistance to mupirocin, and one strain carrying mupA gene was highly resistant to mupirocin. Conclusion　The nasal colonization rate of Staphylococcus aureus among healthcare worker in the investigated hospital was high, indicating a risk for nosocomial infections. Strengthened monitoring and decolonization treatment should be carried out to reduce these risks.

Background Nowadays,glaucoma is the major cause of irreversible blindness worldwide and the second cause of global visual loss.To accurately obtain the anterior chamber depth (ACD)is of helpful for screening primary angle-closure glaucoma (PACG).ObjectiveThe aim of this study is to explore the difference and agreement in the measurement of ACD between Scheimplug Imaging System (Pentacam)and ultra-sonographic biomicroscope (UBM).MethodsSeventy-seven eyes of 77 PACG patients aged (69.96±7.87)were divided into two groups.Thirty-seven eyes with acute primary angle-closure glaucoma (APACG)were assigned to group 1,and forty eyes with chronic primary angle-closure glaucoma (CPACG)were assigned to group 2.Central ACD was measured with Pentacam and UBM,respectively.The Bland-Altman method was used to evaluate the agreement of the two methods.ResultsThe ACD values measured by Pentacam and UBM were (1.6467±0.2687)mm and (1.5601±0.2677)mm respectively in APACG,indicating a significant difference (t=-7.259,P<0.01)and a positive linear correlation between the results of these two methods (r=0.939,P<0.01).The ACD values measured by Pentacam and UBM were (2.0622±0.2317)mm and (1.9648±0.2176)mm respectively in CPACG eyes with a significant difference between them(t=-10.433,P<0.01)and a significant linear correlation between these two outcomes (r=0.967,P<0.01).The Bland-Altman method showed that the two modalities had comparable results for ACD.ConclusionPentacam,as a new 3-dimensional mathematical model of the anterior segment,presents some different results from UBM in the measurement of ACD,but it is not clinically significant.Combination of Pentacam and UBM may be available for the clinical measurement of ACD.

Objective To assess the effectiveness of continuous aspiration of subglottic secretions (CASS)in preventing ventilator-associated pneumonia.Methods The relevant randomized controlled trials were searched in the Cochrane Library,Pubmed,CNKI,VIP and Wanfang databases.The experimental group received CASS and the control group did not(NASS group).Two reviewers selected studies according to the inclusion and exclusion criteria,the quality of studies was critically appraised and data were extracted by two reviewers independently.Meta-analysis was conducted by using RevMan 5.2.Results Sixteen randomized controlled trials met the inclusion criteria and enrolled 2 576 patients.According to the meta analysis,compared with NASS,CASS reduced the incidence of ventilator-associated pneumonia,shortened the length of stay in the intensive care unit and the duration of mechanical ventilation.There was no effect on hospital mortality.Conclusions Continuous aspiration of subglottic secretions appears effective in preventing ventilator-associated pneumonia,decreasing the duration of intensive care unit length of stay and mechanical ventilation among critically ill patients with mechanical ventilation.