Objective To evaluate the clinical effect of the simple syringomyelia patients with syringopleural shunt (SPS) and syringosubarachnoid shunt (SSS).Methods Twenty-eight patients with syringomyelia were selected as our subjects.Of which,18 patients were operated with SPS and 10 cases were with SSS.The therapy effect was compared between groups.Results All patients were checked with MRI 3 months after the operations and showed that syrinx cavity was significantly narrow of all patients.At early stage (48 h) after surgery 9 cases in SPS and 4 cases in SSS were showed the decrease syrinx cavity.Among patients with SPS,15 cases (83.3％) had the symptoms and signs improved,1 case (5.5％) withno changes,1 case (5.5％) with worse effect,and 1 cases(5.5％) occurred the tethered spinal cord.Meanwhile,among,patients with SSS,8 cases(80.0％) had the symptoms and signs improved,1 case(10.0％) with no changes,and 1 case (10.0％) with worse effect.There were 4 patients with pneumothorax in SPS group after operations,and the lung compression ratios were less than 5％.These cases were not taken any special treatment for the pneumothorax.All patients in two groups had not been infected and pleural effusions.No cases had taken the tube plugging.Conclusion The simple syringomyelia patients with the spine injury should take the cavity shunt.The SPS has some advantages because it can provide the partly negative pressure.But it should be certified by more cases and a long-time follow up.

Objective To investigate the relationship between cognitive function and emotional status in functional constipation patients.Methods Thirty-five functional constipation patients (the functional constipation group) and 24 healthy controls (the HCs) were enrolled in an event-related potential (ERP),behavior and electroeneephalogram study while performing an oddball auditory task.Response time,accuracy,latency and P300 amplitude were compared between the two groups.The Hamilton depression rating scale (HAMD-17),Hamilton anxiety scale (HAMA),symptom check list-90 (SCL-90) and Eysenck personality questionnaire (EPQ) were administered prior to the oddball task.Results The average HAMD-17,HAM A and SCL-90 (the somatization,obsessive-compulsive disorder,depression,anxiety and psychosis dimensions) scores of the functional constipation group differed significantly from those of the HCs.The intro-extraversion and neurosis dimensions of the EPQ were also significantly different.There was no significant difference in response time or latency between the two groups.The ERP results showed that the P300 amplitudes at the F3 and F7 sites were significantly different between the functional constipation group and the HCs.But there was no significant difference in P300 latencies at F3 or F7 between the two groups.Conclusions The findings suggest that patients with functional constipation are more susceptible to depression and anxiety,as well as somatization,obsessive-compulsive tendencies and other neurotic personality characteristics.Patients may employ psychological defense mechanisms to avoid the depression and anxiety.The ERP results imply there may be the implicit cognitive dysfunction with emotion in patients with functional constipation.

Objective To investigate the biological properties of human amniotic mesenchymal stem cells (hAMSCs) which were preconditioned with phosphodiesterase-5 inhibitor (Vardenfil). Methods hAMSCs were in vitro isolated and cultured, hAMSCs were pre-treated with vardenfil in final concentration of 10 μmol/L. The morphology of Vard-hAMSCs was observed, and the immunological characteristics, proliferative capacity, and ability of anti-oxidative damage of hAMSCs and Vard-hAMSCs were analyzed by flow cytometry. Double labeling immunofluorescent staining was used to count the differences of differential potential between neural cells of hAMSCs and Vard-hAMSCs. Results (1)Flow cytometry revealed that both hAMSCs and Vard-hAMSCs positively expressed CD90、CD105 and CD73, and negatively expressed CD34、CD45、CD11b and HLA-DR. The SPF and PI in Vard-hAMSCs group were (0.57 ± 0.40)% and (2.20 ± 1.60)% respectively, there was no statistical significance compared with hAMSCs group; (2)After 4 hours treated by H2O2, the apoptosis rate in Vard-hAMSCs group were (7.67 ± 0.82)%,which were markedly lower than that in the hAMSCs group and specific blocker group; (3)Under the same induction condition, positive rates of MAP-2 and GFAP in Vard-hAMSCs group were (49.8 ± 6.42)%and (55.2 ± 6.10)% respectively detected by double labeling immunofluorescent staining, which were significantly higher than the control group. Conclusion The strategy that hAMSCs are treated with vandenfil can enrich the ability of anti-oxidative damage and the differential potential for neural cells in a certain time, and the morphology, immunological characteristics, proliferative capacity of Vard-hAMSCs have no significant change. It suggests that pre-treatment with vandenfil may provide a optimized experimental strategey for hAMSCs which were used to treat nervous system disease.

Objective To evaluate the clinical value of endoscopic palliative stents drainage in patients with unresectable carcinoma at pancreas head.Methods Endoscopic stents placement was Derformed in 197 patients with unresectable pancreas head carcinoma,from August 2003 to August 2007,and the clinieal data was studied retrospectively.Results Bile duct obstruction was present in all patients.in which 126 were accompanied with dilation of distal pancreatic duct,91 with atrophy of pancrea body and tail. Stent placement in pancreatic duct Was performed in 108 patients with a Success rate of 96.4%,and placement in bile duct was performed in all patients with a success rate of 99.0%.In 195 patients with successful stent placement,jaundice dissolved after the procedure.Of 101 patients who had abdominal pain,complete pain alleviation Was achieved in 98,partially alleviation achieved in 3. Serum amylase level increased after the operation in 24 cases,which resumed tO normal value after corresponding managements.All Datients received a lifelong follow-up at mean duration of 373.57±157.35 days,with a longest survival time of 842 days.Conclusion Endoscopic palliative stents drainage is safe and effective in patients with unresectable Dancre.atie carcer,which miight increase survival rate and improve life quality.

Objective To investigate the changes of electrode impedance,threshold(THR),maximum comfortable level(MCL),and dynamic range(DR),providing the basis for debugging after operation in congenital deaf children. Methods A respective study was carried out on 20 cases of congenital deaf children who were implanted with cochlear Med?EL SONATAti100. The measurements and changing ranges of electrode imped?ances,THR,MCL and dynamic range during the operation and at postoperative one month,three months,and six months were statistically analyzed. Results Electrode impedances were the lowest during the operation and the highest at one month after operation(P<0.01). The electrode imped?ance for the apical cochlear group was statistically different from that for other groups at one month(P<0.05). After three and six months,there were statistically significant differences between groups(P<0.01). THR at six months was lower than that at three months(P<0.05). MCL at three months was higher than that at one month(P<0.01). DR showed an increasing trend(P<0.05). There was no correlation of perioperative and post?operative electrode impedance with THR,MCL,and DR(P>0.05). Conclusion The electrode impedances varied due to different electrode posi?tion. The vales of THR,MCL and DR were unrelated with electrode impedance. DR was gradually increasing,MCL reached steady state earlier than THR. It is important that THR should be debugged at three months after operation and MCL should be debugged at six months.

BACKGROUND: Dynamic hip screw (DHS) is a standard internal fixation for intertrochanteric fracture, whereas the patient combined with osteoporosis, cut-out incidence of lag screw is common. The articles in China and abroad indicate bone cement augmentation of DHS to achieve firm fixation. As for normal bone, no reports is published that whether bone cement augmentation is effective.OBJECTIVE: To investigate the biomechanics of DHS with bone cement augmentation for the fixation of intertrochanteric fracture specimen that has a normal bone density.DESIGN, TIME AND SETTING: Bilateral contrast observation study of the same sample was performed in the Laboratory of Biomechanics, Hebei Orthopaedic Research Institute (Shijiazhuang, Hebei Province, China) between March and April In 2005.MATERIALS: Bilateral upper femora from the embalmed male cadaver were provided by Anatomy Department of Hebei Medical University (China). X-ray scan results proved the absence of tuberculosis, anatomical deformity and tumor.METHODS: Twenty-four matched pairs of the upper femora (48 sides) were used to make the specimens of the intertrochanteric fracture of type A2. The right femur specimens were fixed with DHS augmented by bone cement, as the augmentation group (The screw track of femoral neck was expended by curette, and the femoral head facing upwards were injected with 2mL low viscosity bone cement. Then lag screw was wrested to keep the position unchanged till the bone cement coagulated. Placing barrel, compressing through tighten tail screw, and cortical screw fixing side-plate were. followed). And the left femur specimen was fixed with DHS conventional fixation, as the control group. The bending and torsional tests were performed in the two groups.MAIN OUTCOME MEASURES: The maximum load and the maximum torque in the two groupsRESULTS: The maximum load and the maximum torque were (3852.1602±143.6031) N and (15.5+2.6) Nm in the augmentation group, and (3702.9667±133.8601) N and (14.7±3.4) Nm in the control group. There was no significant difference in the biomechanical effects between the two groups (P>0.05).CONCLUSION: The augmenting fixation with bone cement for intertrochanteric fracture specimen has no significant effect on the strength of DHS fixation or on the overall stability of the fractured bone in normal bone density.

Object Through performing the service satisfaction survey,to learn their interest claim and discover the service defects ,so as to provide advice and countermeasures.Method Using field survey methods and statistics analysis to study.Result The satisfaction of relatives of pediatric patients at the level of "relatively good" and "good" is about 60% both in medical treatment environment and equipment ,over 70% in medical treatment effect,doctor capacity,nursing capacity and overall assessment,but only 5.1% in medical expenses.Conclusion Relatives of pediatric patients have high satisfaction in treatment capability of medical staff,medical treatment effect as well as overall assessment ,normal satisfaction in medical environment and equipment,but lowest satisfaction in medical expenses,and the satisfaction in tertiary hospital is not high.Relatives in some districts demand much in some aspects,such as improving hospital environment,attaching importance to ward hygiene ,improving service attitude,and providing single ward ect.

Objective To investigate CT findings of hepatic necrosis and regeneration after liver failure.Methods Five patients with liver failure underwent CT scan before orthotopic liver transplantation.These findings were retrospectively reviewed and correlated with gross specimen and pathologic findings obtained after transplantation.Results Among 5 cases,the CT appearances of liver failure can be divided into 3 types.(1)Massive confluent aggregate foci in 2 patients demonstrated low attenuation and high attenuation as geographical patlerns on CT scans before contrast enhancement.respectively.The histopathological liver changes showed massive necrosis and regencratinn. Regions of necrosis enhanced to attenuation greater than that of normal liver parenchyma in portal-venous phase,the regions of regeneration enhanced to attenuation greater than that of normal liver parenchyma in arterial phase on postcontrast CT images.(2)In 2 patients,diffuse nodules of liver demonstrated high attenuation on plain CT scans,which was nodular necrosis and nodular regeneration pathologically.All enhanced to attenuation greater than that of normal liver parenchyma in arterial phase.The former showed hypointensity in portal-venous phase and equilibrium phase.The latter enhanced to attenuation equal to that of normal liver parenchyma in portalvenous phase and equilibrium phase on postcontrast CT images.(3)Multiple small foci in 1 case demonstrated low attenuatiun on precontrast CT images and enhanced to hyperintensity in portal-venous phase and isointensity in arterial phase and equilibrium phase on postcontrast CT images.The histopathological liver changes showed multiple necrosis.Conclusion Liver failure may reveal characteristic imaging patterns at CT.

Objective To evaluate the imaging findings of congenital anomalies of inferior vena eava (IVC) with 64-slice spiral CT. Methods Between January 2008 and May 2009, 6986 patients who had routine abdominal 64-row multi-detector computed tornography were retrospectively analyzed for congenital anomalies of IVC. Results Among 6986 cases, 25 cases with congenital anomalies of IVC were identified. Six case were left IVC, showing IVC left to the aorta inferior to the renal hilum. Ten cases were double IVC, showing two IVC besides the aorta inferior to the renal hilum. Five cases were abnormal renal vein, showing retroaortic and circumaortic left renal vein. Two cases were IVC interruption with collateral circultion by azygous or hemiazygous vein, contrast-enhanced CT scan showing deficiency of the IVC between hepatic and renal hilums, the enlarged azygos vein communicating with IVC at renal level and the hepatice vein draining into the right atrium. Venography showed that IVC draining into the superior vena cava through azygous or hemiazygous veins. One case was interruption of the IVC with portal vein continuation, contrastenhanced CT scan showing the communication between the IVC and portal vein. One case was hemiazygos continuation of a left IVC, contrast-enhanced CT scan demonstrating dilatation hemiazygos continuation of a left IVC and jointed the azygos vein. Conclusion The 64-slice spiral CT can be a diagnostic standard for congenital anomalies of inferior vena cava.

Objective To evaluate the pulmonary imaging features in patients with severe or critical severe A H1N1 influenza. Methods Clinical and imaging findings of 18 cases with H1N1 pneumonia were retrospectively analyzed. These patients were divided into 2 groups including severe group (n=11) and critical group (n=7). Results Among the severe group, bilateral ill-defined nodules and patch shadows were found in 8 cases, local ill-defined patchy was shown in 3 cases, and consolidation of right inferior lung was demonstrated by CT scan in 1 case. Among the critical group, diffuse ground-glass attenuation with partial consolidation were found in bilateral lungs of 4 cases, subcutaneous emphysema was observed in 1 case. CT showed diffuse ground-glass attenuation and nodular like consolidation in bilateral inferior lungs in 1 case, and other 3 cases showed diffuse consolidation of bilateral lungs. Conclusions The radiologic findings of severe and critical severe pulmonary infections with H1N1 include ill-defined nodules and patch shadows of bilateral lung in sever patients, diffuse peribronchial ground-glass opacity and multifocal consolidation in critical severe patients. The radiologists should learn the features of H1N1 pneumonia on thoracic plain film and CT to make diagnosis in time.