Objective To evaluate the non-invasive cardiac output measurements by electric impedance in critically illpatients. Methods Cardiac output measurements by impedance and Doppler ultrasonography were performed in 38 pa-tients in ICU. Results There was a significant correlation (r =0. 908 ) between impedance and ultrasonography for car-dio output measurement. Conclusion There is close agreement between electric impedance and ultrasonography in themeasurement of cardiac output in the patients. The electric impedance measurement is a noninvasive,feasible, handy, con-tinuous and cheap measurement of cardiac output.

Objective To investigate the difference of the protein expression in serum of rats with acute edematous pancreatitis (AEP) and acute necrotizing pancreatitis (ANP),and to investigate serum marker for acute pancreatitis severity.Methods The model of AEP and ANP was induced by retrograde injection of 4％ or 5％ sodium taurocholate into the biliopancreatic duct.Weak cation exchange (WCX2) and surface enhanced laser desorption/ionization time of flight mass spectrometry ( SELDI TOF MS) was used to investigate the difference of the protein expression in serum of rats with AEP and ANP.Results Thirty-eight spectral peak clusters which had significantly different signal intensities between AEP and ANP sera at mass charge ratio between 1000-50 000(P ＜0.05) were detected.The peak clusters at 9500 and 9700 in the sera of AEP were higher than that in ANP rata.Conclusions Serum analysis with SELDI-TOF MS can detect the difference of the protein expression in rats with AEP and ANP.The decreased expression of the protein of molecular weight of 9500 and 9700 may be a signal of AEP transition into ANP.

Objective To explore the consistency and significance of optical coherence tomography (OCT) and clinical and histopathological findings in adoptively transferred uveitis in mice.Methods The adoptively transferred experimental autoimmune uveitis (EAU) model was established by intraperitoneal injection of antigen-specific T cells in C57BL/6 mice.Since 9 days after transferred,inflammation of eyes was observed by indirect ophthalmoscope with +90D lens and record clinical scores every 3 days.The disease was divided into 6 phases including onset phase,early phase,pre-peak phase,peak phase,resolution phase and late phase of EAU,which respectively corresponding to clinical score 0.5,1.0,1.5-2.0,2.5-3.0,1.0-2.0 and less than 1.0.Since 9 days after transferred,the retina and retinal thickness (RT) was measured by spectralis OCT about 1 disc from the disc edge in 10 time points including 9,11,16,21,25,30,35,40,50 and 60 days after transferred.The OCT score was recorded as from 0.0 to 4.0.After transferred 9,21 and 60 days,the mice were killed and eye balls were examined in histology.OCT score,clinical score and histology in the mouse were compared and analyzed.Results The disease was divided into onset phase,early phase,pre-peak phase and peak phase of EAU,which respectively corresponding to 9,16,21 and 26 days after transferred.In four phases,OCT score were 0.5,1.0,2.0 and 4.0 respectively.After transferred 30 days,which was in resolution phase of EAU,the inflammation cells in vitreous were decreased and OCT score was 3.0.After transferred 60 days,which was in late phase of EAU,inflammation cells in vitreous were disappeared and retina was atrophic topically.The histology showed the vitreous has slight inflammation cells and retinal structure was normal at onset of EAU.The vitreous has massive inflammation cells and retina structure was disorder at pre-peak of EAU.And in resolution phase of EAU,the inflammation cells in vitreous were slightly and retina was atrophic and thinned.The data in this study demonstrated that OCT score was well correlated with clinical score in EAU (r=0.957 9,P＜0.000 1).Conclusion OCT and clinical and histopathological findings in adoptively transferred uveitis in mice were consistency and OCT is contribute to evaluate the disease dynamically and quantifiably.

Objective To observe the brain regions activated during calculation in patients with left temporal lobe epilepsy (TLE) and in normal subjects.Methods Functional magnetic resonance imaging (fMRI) was applied.Sixteen right-handed persons with left TLE were selected as the left TLE group,and sixteen healthy volunteers were recruited as a control group.The fMRI data was collected as each subject performed simple additions,subtractions and abdication subtractions.Statistical parametric mapping was used to compare the activated brain regions between the two groups.Results The error rate in the calculations was significantly higher in the left TLE group,and their average reaction time was significantly longer.There were aslo significant differences between the two groups in terms of brain activation patterns.Compared with the control group,the left TLE group exhibited hypo-activity in regions such as the left paracentral lobule,the posterior central gyrus,the bilateral inferior parietal lobule,the left angular gyrus,the bilateral supramarginal gyrus,the left middle frontal gyrus,the left superior gyrus,and also in the bilateral posterior cingulate,insular lobule,superior and inferior temporal gyrus,right hippocampus,parahippocampal gyrus,thalamus and cerebellum.The TLE subjects exhibited hyper-activity in the bilateral superior parietal lobule,the bilateral anterior cingulate,as well as in the right,middle and inferior frontal gyrus.Conclusion Our results support a significant functional reorganization of calculation-related neuronal networks within and between the hemispheres in TLE patients.The frontal and parietal lobes may play a compensatory role in the reorganization of the calculation function.Task-related fMRI technology can provide useful information for non-invasive assessment of mathematical computing and cognitive function in TLE patients.

ObjectiveTo introduce the application of slender narrow subcutaneous fascia pedicle flap in repairing the cavity of conchs wound in microtia plasty,and to investigate its survival mechanism.MethodsThe all 6 congenital microtia cases were repaired with the concha compound flap up rotation.The all microtia concha wounds were repaired with the slender narrow pedicle.The lateral maxillocevicai fasciotaneous flap with its slender subcutaneous fascia pedlcle located in front of auricle.The size of the flaps ranged from 3.0 cm × 3.0 cm to 4.0 cm × 4.5 cm,The width and length of the pedicle ranged 1.0-1.5 cm and 3.5-4.5 cm.Results6 cases of the slender narrow subcutaneous fascia pedlcle flaps all survived,with primary wound healing and ideal appearance.ConclusionsThis slender narrow subcutaneous fascia pedlcle flap does not contain any major blood vessel,which is dissected easily in the operation.Due to its slender narrow pedicle,the flap rotation is also easy and its coverage area is large,without cat ears.The postoperative appearance (color,lexture,cosmetic aspect)is satisfactory.The slender narrow flap is an extraordinary new design and is ideal for the cavity of concha wound repair in the microtia plasty.

Objective: To study therapeutic effects of simvastatin on vascular endothelial cell dysfunction in patients with coronary heart disease (CHD). Methods: According to LDL-C level, a total of 90 CHD patients were divided into simvastatin 20mg group (n=37, LDL-C≥2.5mmol/L), simvastatin 10mg group (n=35, 1.8mmol/L≤LDL-C<2.5mmol/L) and routine treatment group (n=18, LDL-C<1.8mmol/L). Their course of treatment was 8 weeks. Color Doppler ultrasound diagnostic instrument was used to measure flow-mediated dilation of brachial artery (FMD), and nitrate reductase method was used to measure concentration of nitric oxide (NO) in all CHD patients. Serum concentrations of TC, TG, LDL-C and HDL-C were routinely measured. Results: After treatment of eight weeks, compared with before treatment, there were significant decrease in concentrations of TC, TG and LDL-C (P<0.05 all), and significant increase in HDL-C level (P<0.05 all) in simvastatin 20mg and 10mg group, but there were no significant difference in above-mentioned all indexes between simvastatin 20mg and 10mg groups, P>0.05 all; Compared with routine treatment group, there were significant improvement in FMD [(6.01±0.49)% vs. (9.01±0.39)% vs. (9.01±0.47)%，P<0.01 all] and significant increase in serum NO concentration [(38.97±8.89)μmol/L vs. (47.67±10.89) μmol/L vs. (45.61±9.09) μmol/L，P<0.05 all] in simvastatin 20mg and 10mg group; But there were also no significant difference in serum NO and FMD between simvastatin 20mg and 10mg groups, P>0.05 all. Conclusion: Simvastatin can increase NO concentration and improve vascular endothelial cell dysfunction in CHD patients. Its mechanism may be related with lipid-lowering effect, but independent of its lipid-lowering effect

Objective To introduce a new and practical method of treating blepharoptosis with direct suspension of the frontal muscle-fascia improvement. Methods 22 cases of blepharoptosis were corrected by direct suspension of the frontal muscle-fascia in which the dynamia still came from frontal muscle.Through double-fold eyelid incision, the frontal muscle-fascia was dissected from the subcutaneous tissue and a 1.5 cm length incision of the frontal muscle-fascia was cut under the supraorbital margin. And through the incision, the frontal muscle-fascia on the superficies of periosteum was dissected 1.5 cm to the upper margin of orbital, and then the frontal muscle-fascia was pulled down and fixed to the levator muscle aponeurosis directly by mattress sutures, with the tension being adjusted to a moderate degree. Results 22 cases of blepharoptosis were cured by primary healing with this method. The patients were followed up for 3 to 6 months with satisfactory results and no recurrence. Conclusion Compared with the traditional methods,this one may decrease the damage to the upper lid and frontalis area, leaving no risk of damaging the vessels or nerves. The technique is simple and the curative effect is affirmed. It can be used to treat any blepharoptosis patient with normal frontal muscle function.

Objective To reveal the relationship between a certain ratio of the length to width of a slender narrow pedicle and random flap in survival area with an experimental study. Methods 25 pigs were randomly divided into 5 groups. The ratio of length to width of slender narrow pedicle in 5 groups was different and every ratio's slender narrow pedicle was carrying 5 different sizes of random flaps. In each group, these 5 flaps were created randomly in each pigs' bilateral back. The flaps were evaluated with the general observation, fluorescence examination, blood flow ECT test, and computerized analysis of survival area. Results When the ratio of the length to width of the slender narrow pedicle was constant, along with the flap area increased, the flap survival area also increased, but when the flap reached a certain area, the distal flap would develop necrosis, the flap survival area would not reduce; when the flap size remained unchanged, along with the ratio of the length to width of the slender narrow pedicle increased, the flap survival area was not affected, but, when the ratio of the length to width of the slender narrow pedicle increased to a certain limit, distal flap would lead to necrosis, and the flap survival area would reduce. Conclusion The slender narrow pedicle flap is a new and practical random flap. The pedicle of random flap can be designed as slender shape, and the ratio of pedicle width to flap length is far less than traditional ratio. Increasing the flap size or ratio of the length to width of a slender narrow pedicle in a certain extent will not lead to flap necrosis.

Objective To explore the feasibility for the tissue dispersion quantitative analysis software of ultrasonic strain elastography in diagnosing benign or malignant of thyroid lesions.Methods Eighty-two patients with 98 lesions were examined by ultrasonic strain elastography.There were 11 parameters of elastography imaging obtained by the tissue dispersion quantitative analysis software,including average relative strain value(MEAN),standard deviation of relative strain value(SD),area ratio of low-strain region (AREA％),complexity(COMP),kurtosis(KURT),skewness (SKEW),contrast (CONT),entropy(ENT),inverse different moment (IDM),angular second moment (ASM),correlation (CORR).The receiver operating characteristic (ROC) curve was constructed if there were statistically significant differences between benign and malignant lesions,and the areas under the ROC curve were got.Results All parameters except CORR had statistically significant between the groups of benign and malignant thyroid lesions (P ＜0.05).The AREA％ and IDM were the best valuable parameters,the areas under the curve(AUC) of which were 0.965 and 0.908,respectively.Their cut-off point were 81.96％ and 0.42,the sensitivity and specificitywere 98.4％ and 89.2％,91.8％ and 86.5％,respectively.Conclusions The tissue dispersion quantitative analysis software is helpful in the evaluation of benign ormalignant of thyroid lesions,parameters of AREA％ and IDM has the highest relationship with pathology and good diagnostic value.

BACKGROUND:Edaravone as an antioxidant protective effect on nerve cells injured by hydrogen peroxide has been confirmed, but its protective effect on oxidative damage to bone marrow stromal cells has not been reported in-depth. OBJECTIVE:To investigate the regulatory effects of edaravone on oxidative injury to bone marrow stromal cells. METHODS:Bone marrow samples were extracted from the long bone of New Zealand rabbits by the method of washing the pulp cavity, then subjected to the density gradient centrifugation and adherent screening to obtain bone marrow stromal stem cells in vitro. The bone marrow stromal cells at 3 passage were divided into five groups:blank group, treated with low-glucose Dulbecco’s modified Eagle’s medium containing 10%fetal bovine serum and 1%double antibody;dexamethasone group, treated with cellculture medium containing 1×10-7 mol/L dexamethasone;50, 100, 300 mg/L edaravone groups, cultured in cellculture medium containing 1×10-7 mol/L dexamethasone and 50, 100, 300 mg/L edaravone, respectively. After culture, MTT method and flow cytometry were used to detect the proliferative level and cellcycle of cells. RESULTS AND CONCLUSION:Compared with the control and dexamethasone groups, edaravone significantly enhanced the cellproliferation. Edaravone played a protective role in bone marrow stromal cells. When the concentration was 50 mg/L, edaravone began to play a regulatory role (P<0.05), and this effect was certainly associated with the concentration of edaravone. When the concentration was up to 100 mg/L, edaravone showed a better protective role (P<0.01). However, with increasing concentration, this protective effect was not further increased, but decreased slightly. Results indicated that high-concentration dexamethasone can induce oxidative injury to bone marrow stromal cells, and edaravone can protect the cells against this oxidative damage by antioxidant role.