0.05).But for the patients with wide-base vocal cord polyps,the effective rate of self-retaining laryngoscope group was higher than that of electronic laryngoscope(P

OBJECTIVE:To prepare Xiaocuo emulsion and to study its stability.METHODS:The formula and techniques were optimized with metronidazuo,cimetidine,chloramphenicol and salicylic acid as the chief ingredients,and with the uniformity of emulsion as the indicator.The stability test was performed using storage test and accelerated centrifugal test.RESULTS:The optimized formula was the following,5ml azone,4ml tween-80,1g metronidazole,2g cimetidine,2g chloramphenicol,1g salicylic acid and 100ml deionized water.CONCLUSION:The preparation is reasonable in formula,simple in preparative techniques,stable in quality and feasible in production.

Objective To investigate the changes in plasma concentrations of IL-6 and IL-10, pHi and the difference between tissue and arterial PCO2 [(P(t-a)CO2 ] during pulmonary surgery and the effects of thoracic epidural anesthesia on cytokine production and gut mucosal perfusion. Methods Twenty ASA class Ⅰ - Ⅱ patients undergoing elective pulmonary surgery, were randomly assigned to be operated upon under general anesthesia (group GA , n = 10) or under general anesthesia combined with thoracic epidural anesthesia (group GEA, n - 10) . Premedication in both groups consisted of pethidine 50mg and scopolamine 0.3 mg im 30 min prior to surgery and oral ranitidine 150 mg the night and 1 h before operation. Anesthesia was induced with fentanyl 2 ug?kg-1 , droperidol 1 mg, propofol 1.5-2.5 mg?kg-1 and succinylcholine 1-2 mg?kg-1 and maintained with inhalation of 1%-2.5% isoflurane and 50% N2O in oxygen and intermittent iv boluses of fentanyl and vecuronium. In GEA group epidural catheter was inserted through the needl placed at T7-8 or T8-9 and advanced cephalad for 2.5-3.0 cm. A loading dose of morphine 2 mg was given followed by epidural infusion of 0.4% ropivacaine at a rate of 6 ml?h-1 during maintenance of anesthesia and the concentration of isoflurance inhaled was reduced to 0.6%-1. 5% . Postoperative analgesia was provided by epidural infusion of 0.25% ropivacaine at 6-8 ml/2h until the morning of the 3rd postoperative day. Blood samples were taken before induction, at incision and 2 h, 4 h and 6 h after the incision and on the 1st and the morning of the 3rd postoperative day for determination of IL-6 ( by radioimmunoassay) and IL-10 (ELISA) . P(t-a)CO2 and pHi were assessed by tonometry before induction, at incision and 1 h, 2 h, 4 h and 6 h after the incision. Results (1) IL-6 and IL-10 increased significantly during operation as compared with the baseline value before induction in both groups and there was no significant difference between the two groups. (2) pHi decreased significantly during operation in both groups and there was no significant difference between the two groups. pHi was negatively correlated with IL-6. (3) P(t-a)CO2 increased significantly during operation in both groups and was negatively correlated with pHi. P(t-a)CO2 was significantly higher in GA group than that in GEA group at 4h after skin incision. Conclusion Pulmonary surgery elicits both pro- and and-inflammatory cytokine response which is not affected by thoracic epidural analgesia. Thoracic surgery leads to gut mucosal hypoperfusion of which P(t-a)CO2 is an indicator. Thoracic epidural anesthesia can improve gut mucosal perfusion. There may be some correlation between cytokine production and gut mucosal hypoperfusion.

Purpose To investigate the influence of single slow intravenous infusion of dexmedetomidine (Dex) on femoral artery color Doppler hemodynamics during the induction of general anesthesia. Materials and Methods Forty patients of elective abdominal surgery under general anesthesia were elected and randomly divided into Dex group and the control group, with 20 cases in each group. Dex (0.2 μg/kg) 20 ml was injected with intravenous infusion in Dex group, and 20 ml saline was infused in control group, the infusion time was 10 min;then intravenous injection of Sufentanil, Propofol and Rocuronium were performed in turn for the induction of general anesthesia and endotracheal intubation. Femoral artery peak systolic velocity (Vs), early diastolic reverse peak velocity (Vd), systolic diameter (Ds), diastolic diameter (Dd), systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP) and heart rate (HR) changes at each time point were observed and recorded. Results ① Compared with baseline, Vs increased and Vd decreased (P<0.05) 10 min after the infusion of Dex in Dex group;after induction, Vs and Vd in both of the two groups decreased, and the difference between the two groups was not statistically significant (P>0.05);Vs reduced significantly in both of the two groups at the intubation moment and 1, 3, 5 min after intubation, but the Dex group changed more smoothly (P<0.05), and Vd raised in both groups with the Dex group changing more smoothly (P>0.05);Ds and Dd of both groups did not change significantly at each time point (P>0.05). ② Compared with baseline, MAP and HR decreased (P<0.05) after the infusion of Dex in Dex group;after induction, MAP and HR of both groups decreased, and the difference between the two groups was not statistically significant (P>0.05); MAP and HR increased in both groups at intubation moment, but the Dex group changed more smoothly than the control group (P<0.05).③SBP, DBP and HR were negatively correlated with Vs (r=-0.507,-0.619,-0.750, P<0.05) in both groups; SBP, DBP and HR were positively correlated with Vd (r=0.821, 0.881, 0.883, P<0.05) in both groups;there was no significant correlation (r=0.419, P>0.05) between Vs and Vd. Conclusion Single slow intravenous infusion of Dex (0.2μg/kg) can accelerate the femoral artery Vs and slow down the Vd, resulting in more stable hemodynamics during the induction of general anesthesia.

Objective To analyse the stress distribution of distal-extension removable partial dentures supported by mini implants. Methods The finite element analysis models of conventional removable partial dentures ( CRPD) and mini implants supported removable partial dentures (ISRPD) were established by modular denture model. The stress distribution of abutments and supporting tissues was compared by finite element analysis software Abaqus 6.5.Results Under vertical loading, the stress of abutment teeth, mucosa of edentulous region and alveolar bone of ISRPD model was lower than that of CRPD model. Under oblique loading, the stress of each part of CRPD model and alveolar bone of ISRPD model significantly increased, while that of abutment teeth and parodontium of ISPRD model decreased. Conclusion The distal-extension removable partial dentures supported by mini implants work well in protecting the abutments and supporting tissues.

Objective To analyse the stress distribution of precision attachment dentures used in distal-extension edentulous cases. Methods The finite element models of conventional removable partial dentures and precision attachment dentures were established by modular denture model, and the models of precision attachment dentures were established with 4┬4 as one abutment or 43┬34 as two abutments. The stress distribution of abutments and supporting tissues was compared by finite element analysis software Abaqus 6.5.Results Under vertical loading or oblique loading, the stress of abutments and supporting tissues from attachment dentures with two abutments was significantly lower than that from attachment dentures with one abutment. The stress of conventional removable partial dentures significantly increased under oblique loading. Conclusion It is reasonable for the design of attachment dentures with two abutments for mandibular distal-extension edentulous cases.

OBJECTIVE:To investigate the significance of tacrolimus blood concentration monitoring to the therapy of mem-branous nephropathy. METHODS:41 patients with membranous nephropathy received tacrolimus,and the blood concentration of ta-crolimus reached to steady state. The trough concentration of tacrolimus was determined by EMIT. The patients were followed up, and clinical therapeutic efficacies were recorded. The relationship of blood concentration of tacrolimus with clinical efficacy was evaluated by SPSS 16.0 software. RESULTS:The blood concentration of tacrolimus was(7.47±2.74)ng/ml in complete remission (CR)group,(5.72±1.19)ng/ml in partial response(PR)group,and(3.30±1.08)ng/ml in no response(NR)group,with total remission rate of 75.61%. The blood concentration of CR group was the highest,followed by PR group and NR group,there was statistical significance among 3 groups(P<0.05). CONCLUSIONS:The clinical efficacy of tacrolimus in the treatment of nephrot-ic syndrome is correlate to the blood concentration intimately. Trough concentration monitoring of tacrolimus has important signifi-cance to the treatment of membranous nephropathy.

BACKGROUND:Hard palate mucosa serves as a main donor material in periodontal plastic surgery and its thickness is crucial for the surgical outcomes. OBJECTIVE: To analyze the thickness of hard palate mucosa in Han population, and analyze the consistency between cone-beam CT image analysis and trans-gingival probing method. METHODS: A total of 30 Han volunteers (300 teeth) were recruited, and the thickness of hard palate mucosa was measured using cone-beam CT image analysis or trans-gingival probing method, to analyze their consistency. RESULTS AND CONCLUSION: The two methods showed a higher consistency in the thickness of hard palate mucosa at the cuspid, first and second premolars as well as first and second molars. The thickness of the hard palate mucosa related to the distance from the gingival margin and tooth position, the thickness from the canine region to the second premolar region thickening gradually, and became the thickest at the second molar, and the thinnest at the cuspid. This study for the first time analyzed the thickness of hard palate mucosa in Chinese Han population, and confirmed there is a high consistency between cone-beam CT image analysis and trans-gingival probing method.

OBJECTIVE To promote the direction,administration and surveillance of nosocomial infection control in general hospital,and to prevent the onset of nosocomial infection and reduce its rate.METHODS Retrospective study was taken based on the data of 95193 cases from Jan 2003 to Jan 2007.RESULTS Nosocomial infection happened in 5024 patients and in 5545 cases-times out of 95193 cases,and the rate was 5.28% and 5.83%,respectively.Infection rate(8.49%)in internal medicine were the highest.The main infection site was lower and upper respiratory tract(the constituent ratio 30.66% and 23.20% respectively).CONCLUSIONS Diminishing or avoiding invasive process,using antibacterial drug rationally,promoting the surveillance of the key department and key patients are very important to control nosocomial infection.

Objective To observe the effects of low frequency electrical stimulation (LFES) on the proliferation of endogenous brain neural stem cells (NSCs) and on the expression of basic fibroblast growth factor (bFGF)and epidermal growth factor (EGF) in rats with acute cerebral infarction; to explore the therapeutic mechanism of LFES in improving neural function. Methods Fifty-four rats were randomly divided into a LFES group, a placebo stimulation group and a sham-operated group. Each group was further divided into 3rd day, 7th day and 14th day subgroups, with 6 rats in each subgroup. An acute cerebral infarction model was induced in the rats of the LFES and placebo stimulation groups by middle cerebral artery occlusion (MCAO). Three days after the operation, rats in the LFES group began LFES treatment (frequency 30 Hz, pulse width 250 μs, current intensity 3 mA, 10 min/d) ,while the placebo stimulation group was treated identically but without electricity. The rats in the sham-operated group had no special treatment. The expression of nestin positive cells in the subgranular zone of the hippocampus and the subventricular zone was detected by immunohistochemical staining. The expression of bFGF, EGF proteins and mRNA in the ischemic hemisphere was detected by Western blotting and RT-PCR analysis. A screen test was applied to evaluate motor function. Results Nestin-positive cells in the subgranular and subventricular zones of rats in the LFES group increased significantly more than in the placebo stimulation group at the 7th and 14th day. The expression of bFGF, EGF proteins and mRNA in the ischemic hemisphere was up-regulated compared to the placebo stimulation group at the 7th and 14th day. At the 14th day a difference in motor function was observed in rats in the LFES group compared with the placebo stimulation group. Conclusion LFES can promote the proliferation of endogenous brain NSCs and the expression of bFGF and EGF in rats with acute cerebral infarction. It can also improve motor function and enhance neural plasticity in the brain.