Many accessories to the ventilator such as the humidifier and the artificial nose are widely used and applied. In clinical medicine engineering, doctors and medical engineers have to be integrated to perform patient-centered care and to accomplish the functional structure based on the patient's essential physiological indexes. The scientific quality control has to be implemented during the operation, maintenance and sterilization of the equipment, thus iatrogenic infection can be avoided and medical diagnosis and treatment can be enhanced.

Objective To investigate the effects of electroacupuncture at Sanyinjiao (SP6) and Yinlingquan (SP9) on muscle repair in the gastrocnemius muscle damaged rats and its possible mechanism. Methods 30 male Sprague-Dawley rats were randomly divided into blank group (n=10), model group (n=10) and electroacupuncture group (n=10). The latter 2 groups were modeled with gastrocnemius muscle crush injury. The electroacupuncture group received electroacupuncture at Sanyinjiao and Yinlingquan for 14 days. Their gastrocnemius was observed with HE staining, and the expressions of basic fibroblast growth factor (bFGF) and insulin-like growth factor-1 (IGF-1) in gastroc-nemius tissues and the serum were determined with immunochemical assay and enzyme-linked immunosorbent assay (ELISA). Results Compared with the model group, there was less damage in the electroacupuncture group, with more expression of bFGF and IGF-1 in tis-sues (P<0.01) and serum (P<0.05). Conclusion Electroacupuncture can promote muscle repair after gastrocnemius muscle damage in rats, which may be related to the increase of the bFGF and IGF-1 expression in gastrocnemius tissue and serum.

Objective:To establish the HPLC fingerprint detection method for gynecological lotion. Methods:Wondasil C18 (250 mm × 4. 6 mm,5 μm)was selected as the analytical column. The mobile phase was composed of acetonitrile-0. 3% phosphric acid and 0. 3% diethylamine solution with gradient elution at a flow rate of 1. 0 ml·min-1 . The detection wavelength was set at 284 nm and the column temperature was 30℃. Ten batches of gynecological lotion were detected by the HPLC fingerprint and evaluated by Chromato-graphic Fingerprint Evaluation System of Chinese Medicine (2004 edition). Results: The separated peaks were clear and 15 common peaks were identified in the fingerprint of 10 batches of gynecological lotion. Conclusion: The HPLC fingerprint is with good repeat-ability and stability, which can provide evidence for the quality control of gynecological lotion.

Objective To discuss and evaluate the value of multi slice spiral CT angiography in the diagno -sis of penetrating atherosclerotic ulcer materials .Methods 17 patients of PAU were collected and examined with MSCT,the location,radiological diagnosis and complications of PAU on axial ,CTA and 2D/3D images were analyzed. Results Ulcer-like aortic projections were observed of 17 patients,and connected with aortic cavity ,where narrow neck sign was showed .The indirect signs included localized or extensive IMH ,calcification of aortic wall and dilata-tion of aorta .Conclusion Multi slice spiral CT angiography is an effective method for the diagnosis of PAU by provi -ding valuable information for the diagnosis and treatment .

Objective To investigate the clinical value of multi-slice spiral CTA ( MSCTA ) and image-post processing techniques in diagnosis of acute aortic syndrome ( AAS) .Methods 71 patients with AAS were scanned by TOSHIBA Aquilion 64-slice spiral CT,the images on axial and 2D/3D were analyzed.Results 71 cases included 48 cases of aortic dissection ( AD) ,10 cases of intramural hematoma ( IMH) and 13 cases of penetrating atheroscle-rotic ulcer ( PAU) .MSCT depicted the imaging features of AAS:AD showed intimal flap and true and false lumens;IMH showed crescent or circular thickening of aortic wall .PAU showed a niche filling with contrast medium and pro-truding the aortic lumen ,where narrow neck signwas shown .The location ,radiological diagnosis and complications of AAS were observed in 71 patients.Intervention treatment or surgical treatment was conducted in 27 cases after defi-nite diagnosis .Conclusion MSCT is a fast and noninvasive examination technique , and it can provide important information for the diagnosis and treatment of AAS .

Objective To observe the effect of methylprednisolone (MP) pre-intervention on ex-pressions of heat shock protein 27 (HSP27) and tumor necrosis factor alpha (TNF-α) in cells in rat spinal cord following ischemia-reperfusion injury. Methods One hundred and fifty male Sprague-Dawley (SD) rats were randomly divided into 3 equal groups: group A (control) in which the abdominal aorta was exposed without any treatment, group B in which the abdominal aorta was clipped for 30 minutes before reperfusion for 3 bours to establish a model of ischemia- reperfusion injury, and group C in which intravenous MP injection was conducted 30 minutes before the establishment of the ischemia-reperfusion injury model. Three hours later the spinal cords were harvested. Pathological changes of spinal cord cells were observed with HE staining and expressions of HSP27 and TNF-α in spinal cord cells were observed with immunohistochemical staining. The motor function of hind-limbs before was evaluated before sample harvest. The data were analyzed with SPSS software. Results There were significant differences between groups A and B in the expressions of TNF-α and HSP27. Compared with group B, the expression of TNF-α decreased and HSP27 increased in group C, with statistically significant differences between the 2 groups. The motor function score of hind-limbs decreased in group B but improved in group C. Conclusions Since MP can decrease the expression of TNF-α and up-regulate the expression of HSP27, it has a potency of neuro-protection. Spinal cord ischemia-reperfusion injury can be avoided or decreased after MP pre-intervention.

Gypsum Fibrosum is one of mineral medicines, which is widely used in clinics for a long time. It is mainly used for treating epidemic febrile diseases and excess-heat syndrome. The studies on the heat-clearing effects and mechanisms of Gypsum Fibro-sum in recent years were summarized in the paper,which can provide scientific reference for its further research, application and the heat-clearing mechanism exploration.

To investigate the high-risk factors for newborn hearing loss and to provide information for preventing the development of hearing loss and delaying its progression, from May 2003 to June 2006, neonates who failed to pass the universal newborn hearing screening (UNHS) were referred to Jinan Newborn Hearing Screening and Rehabilitation Center from 7 newborn hearing screening centers in seven cities of Shandong province. One-to-one pair-matched case-control method was employed for statistical analysis of the basic features of definitely identified cases. High-risk factors relating to the bilateral hearing loss were evaluated by univariate and multivariate Logistic regression analysis. Our results revealed that 721 transferred newborns who didn't pass the hearing screening received audiological and medical evaluation and 367 were confirmed to have hearing loss. Of them, 177 neonates with hearing loss who met the matching requirements were included in the study as subjects. Univariate analysis showed that high-risk factors related to hearing loss incuded age of father, education backgrounds of parents, parity, birth weight, gestational weeks, craniofacial deformity, history of receiving treatment in neonatal intensive care unit (NICU), neonatal disease, family history of otopathy and family history of congenital hearing loss. Multivariate Logistic regression analysis revealed that 4 independent risk factors were related to bilateral hearing loss, including parity (OR=16.285, 95% CI 3.379-78.481), neonatal disease (OR=34.968, 95% CI 2.720-449.534), family history of congenital hearing loss (OR=69.488, 95% CI 4.417-1093.300) and birth weight (OR=0.241, 95% CI 0.090-0.648). It is concluded that parity, neonatal disease and family history of hearing loss are the promoting factors of bilateral hearing loss in neonates and appropriate intervention measures should be taken to deal with the risk factors.

Objective To describe the general condition of workplace violence against emergency department nurses in five hospitals of Guangzhou;to investigate the status of the post-traumatic stress disorder in the emergency department nurses after suffering from workplace violence;to analyze the relative factors of post-traumatic stress disorder.Methods 143 emergency department nurses from 5 hospitals in Guangzhou were investigated by general information questionnaire,workplace violence questionnaire,PCLC and SSRS.The investigation data were analyzed.Results 86.7％ of emergency department nurses suffered from workplace violence during the past 1 year;the most popular style was non-physical violence.The emergency department nurses suffered from negative emotional experience,such as grievance,chagrin,low work passion,not focused spirit.The scores of PCL-C of emergency department nurses who had suffered from workplace violence were obviously higher than those who hadn't.21.8％ of the emergency department nurses who suffered from workplace violence in the past one year had certain degree of the signs of PTSD,12.1％ had obvious signs of PTSD.The influencing factors of PTSD:degree of hurt,objective support and availability of social support.Conclusions The situation of workplace violence which the emergency department nurses were faced with was more and more grave.The emergency department nurses who had suffered from workplace violence were in different degree of PTSD.The more social supports the nurses get,the better mental health status they will possess.