Objective To evaluate the value of linear array ultrasonic with high-frequency in the diagnosis of renal artery stenosis (RAS).Methods 1 828 patients who were doubted with RAS were studied.All of them were checked by ultrasonic with convex array probe and linear array probe.Results The sensitivity,specificity,false positive rate,false negative rate of convex array probe were 8.20％,97.10％,2.90％,21.80％.The sensitivity,specificity,false positive rate,false negative rate of linear array probe were 91.13％,99.80％,0.20％,8.87％.Conclusion Linear array with high-frequency can keep the measurement angle less than 60°,and can show the plaque,nature of the plaque and narrow rate of renal artery.It may be more helpful in the diagnosis of RAS.

Objective To solve the shortage of plane network using VLAN technology.Methods We introduces the characteristics of VLAN technology and discusses the partition methods of VLAN to realize the partition of whole hospital.Results The network structure was regulated effectively by using VLAN.Conclusion VLAN technology can not only realize the network flexible disposition,but also enhance the network security greatly.

ObjectiveTo study the nursing strategy and high risk factors of critically ill patients complicated with lower respiratory tract infection in department of neurosurgery. Methods672 critically ill patients in department of neurosurgery in our hospital from January 2007 to September 2011 were selected as research object,and the rate of lower respiratory tract infection and high risk factors were studied and analyzed,and they were taken care of with special nursing. Results54 cases of 672 patients were with lower respiratory tract infection,the rate was 8.04％.Infection rate of elderly patients,patients of poor nutrition state,patients with underlying diseases was higher than those of other patients.Infection rate of patients with invasive operation,sputum suction,application of respirator,longer operative time and oxygen inhalation time was higher than those of other patients.Infection rate of patients with longer hospitalization time,emergency operation,application of many antibiotics and complication of preoperative infection of other site was higher than those of other patients,there were significant differences.The infection was well controlled with special nursing and treatment,four patients died of primary diseases. ConclusionsThe high risk factors of critically ill patients complicated with lower respiratory tract infection in department of neurosurgery include personal factors,treatment operation factors and other factors,and it can be controlled by special nursing and treatment.

Objective:To observe therapeutic effect of lyophilized recombinant human brain natriuretic peptide (Lrh-BNP)on stress cardiomyopathy (SCM)complicated acute bump failure.Methods:A total of 23 patients with SCM complicated acute bump failure were randomly divided into routine treatment group (n=10,received routine treatment)and Lrh-BNP group (n=13,received Lrh-BNP based on routine treatment).Clinical symptoms and signs,cardiac function :left ventricular ejection fraction (LVEF),stroke volume (SV),cardiac index (CI),peak early diastolic velocity/peak late diastolic velocity (E/A)assessed by echocardiography before and after treatment, and total effective rate were compared between two group.Results:Total effective rate of Lrh-BNP group was sig- nificantly higher than that of routine treatment group (92.3% vs.80.0% ,P<0.05).There were no significant difference in cardiac function indexes between two groups before treatment (P>0.05 all);after treatment,com- pared with routine treatment group,there were significant rise in LVEF [(50.2±16.3)% vs.(59.4±14.1)%],SV [(39.5±10.4)ml vs.(48.3±12.5)ml],CI [(3.7±1.1)L min-1 m-2 vs.(4.6±1.4)L min-1 m-2 ]and E/A [(1.0±0.5)vs.(1.3±0.7)]in Lrh-BNP group,P<0.05 all.Conclusion:Lrh-BNP possesses significant thera- peutic effect on stress cardiomyopathy complicated acute left heart failure.

90%inasinglestep,andtheproteinyieldwas2.5mg/L.ConclusionPurifiedChsp60kDantigenisobtained,andtheantigenmightbeappliedtodetectantibodyinpatientsinfectedwithChlamydialtrachomatis,andwillcontributetostudytheroleofChsp60inimmunopathogenesis.

Objective: To establish the optimum preparation process for Suxiaoxintong Dropping Pills (Cortex moutan, Rhizoma Chuanxiong, Borneolum Syntheticum). Methods: The preparation conditions, such as the different kinds of primary substance, cooling agent, the proportion between the extracts and primary substance etc. were studied with L 18 (3 7) orthogonal design. Results: Six batches of the products prepared with the process on the experimental result were conformed to the standard of the Chinese pharmacopoeia. Conclusion: It has been proved that the process is available.

Due to the scarcity of resources of Ziziphi spinosae semen (ZSS), many inferior goods and even adulterants are generally found in medicine markets. To strengthen the quality control, HPLC fingerprint common pattern established in this paper showed three main bioactive compounds in one chromatogram simultaneously. Principal component analysis based on DAD signals could discriminate adulterants and inferiorities. Principal component analysis indicated that all samples could be mainly regrouped into two main clusters according to the first principal component (PC1, redefined as Vicenin II) and the second principal component (PC2, redefined as zizyphusine). PC1 and PC2 could explain 91.42%of the variance. Content of zizyphusine fluctuated more greatly than that of spinosin, and this result was also confirmed by the HPTLC result. Samples with low content of jujubosides and two common adulterants could not be used equivalently with authenticated ones in clinic, while one reference standard extract could substitute the crude drug in pharmaceutical production. Giving special consideration to the well-known bioactive saponins but with low response by end absorption, a fast and cheap HPTLC method for quality control of ZSS was developed and the result obtained was commensurate well with that of HPLC analysis. Samples having similar fingerprints to HPTLC common pattern targeting at saponins could be regarded as authenticated ones. This work provided a faster and cheaper way for quality control of ZSS and laid foundation for establishing a more effective quality control method for ZSS.

BACKGROUND: Anterior cervical decompression and fusion has been widely used in the treatment of multi-level cervical spondylotic myelopathy, but accompanied with lots of complications.OBJECTIVE: To investigate the efficacy of zero-profile interboby fixation system for multi-level cervical spondylotic myelopathy.METHODS: Seventy-one patients with multi-level cervical spondylotic myelopathy were randomly divided into two groups, and the patients in group A accepted zero-profile interboby fixation system, and group B accepted cage interboby fixation system. The Japanese Orthopaedic Association score, fusion rate, as well as the incidence of dysphagia and esophageal fistula were detected to compare the efficacy between two groups.RESULTS AND CONCLUSION: (1) All cases were followed-up for 3-34 months, average of 17.5 months. The excellent and good rate at the last follow-up showed no significant difference between two groups. (2) The final fusion rate did not differ significantly between two groups, but the fusion rate in the group A was significantly higher than that in the group B at 6 and 9 months postoperatively (P < 0.05). (3) There was one patient with mild dysphagia in the group A (3％), three mild, five medium, and two severe dysphagia in the group B (29％), which showed significant difference between two groups (P < 0.05). No internal fixation loosening occurred in the group A, but three cases in the group B. The blood loss, operation time and radiology times in the group A were significantly lower than those in the group B (P < 0.05). (4) These results suggest that the effect of these two surgical methods in promoting functional recovery of spinal cord and final fusion rate show no significant differences; however, the zero-profile interboby fixation system exhibits better postoperative stability and interim fusion rate, with lower incidence of dysphagia.

Objective The aim of this study was to describe the clinical outcomes and improvement of clivo-axial angle (CAA) during the posterior approach surgery of upper cervical anomaly instability patients.Methods All of 32 patients with symptomatic upper cervical anomaly instability were followed up from 2004 Apr.to 2014 Aug.in which 1 patient was excluded because of reoperation.There were 10 patients with OS odontiodeum,5 with odontoid deformity,4 with Klipple-Feil syndrome,4 with atlantoaxial dislocation,4 with atlantoaxial instability,1 with rheumatoid arthritis,1 with old odontoid fracture,1 with OS odontoideum and foramen magnum stenosis,1 with basilarinvagination and Klipple-Feil syndrome.They were all performed posterior reduction internal fixation and fusion,and then released spinal cord compression with the promotion of CAA.The patients were divided into two groups on the basis of decompression or not:non-decompression group 17 cases (male 8 cases,female 9 cases;age 13-65 years old,average 50.1 years old) and decompression group 14 cases (male 7 cases,female 7 cases;age 19-68 years old,average 49.6 years old).The CAA numbers were measured and compared.The clinic date was compared between preoperatively and postoperatively,which included Neck Disability Index and Nurick Classification System for Myelopathy.Results All patients were followed up,the follow-up time of non-decompression group was 0.7-10.7 years,average 2.9 years;the follow-up time of compression group was 0.3-5.5 years,average 2.9 years.Analysis of CAA,NDI and Nurick score were performed with t-test.The postoperative CAA,NDI and Nurick score improved significantly compared to preoperative ones.There was no difference between non-decompression group and decompression group.One patient felt nausea and vomited,one got soleal vein thrombosis,one had a swelling face and blurring vision and one had decompression syndrome after operation,all of these were improved using respectively therapy.No such serious complications as injury to vertebral artery,infection or internal fixation loosening occurred.Conclusion Neck ability and spinal cord function was significantly improved through increasing CAA for the upper cervical anomaly instability patients underwent posterior reduction internal fixation and fusion.

Objective To study the diagnostic value of relative parameters and time-relative-intensity curve(TRIC) in malignant and benign liver tumors with contrast-enhanced ultrasound(CEUS). Methods Fifty-nine focal liver lesions were examined with CEUS and drawed time-intensity curve(TIC) with QLAB software. The relative parameters of malignant and benign liver tumors were calculated and analysed. The relative intensity equaled the echo intensity of lesion substracted the encho intensity of liver. TRIC were drawed with time as abscissa and relative intensity as the ordinate. The types of TIRC were analysed comparatively in different groups (benign and malignant). Results There were significant differences in relative peak time, relative peak intensity, relative enhancement time and relative decline slope between malignant and benign lesions( P ＜0. 05). TRIC appeared quick-ascending and quick-descending types in the malignant lesions,the decline curve of TRIC droped down to 0 dB at (28.24 ± 8. 14)s and down to lowest - 8 dB continually, meanwhile fluctuated slightly. While TRIC appeared slow-ascending and slow-descending types in the benign lesions, the decline curve of TRIC droped down to the lowest 4 dB continually, meanwhile fluctuated slightly. Conclusions The relative parameters and TRIC are new quantitative indicators of CEUS for diagnosis of malignant and benign liver tumors.