Over the years,cerebral vasospasm has been regarded as one of the important factors influencing the prognosis in patients with subarachnoid hemorrhage.Studies have shown that cerebral vasospasm is associated with nitric oxide and nitric oxide synthase after subarachnoid hemorrhage,and regulating the synthesis of nitric oxide may play an active role in the treatment of cerebral vasospasm.

To explore the feasibility of sevoflurane used in obstetric anesthesia and examine its effects on neonatal Apgar scores.A total of 60 cases of term primipara were assigned into epidural anesthesia assisted sevoflurane inhalation group (experimental group,n =30) and epidural anesthesia group (control group,n =30).In the experimental group after skin incision,the patients could not tolerate the anesthesia mask inhalation of sevoflurane.And the control group received no adjuvant drug.The maternal inhalation of sevoflurane to delivery of fetus after 1 min,5 min,10 min Apgar scores were analyzed.And the inhalation of sevoflurane to fetal childbirth duration were 4-10 min in two groups.The intergroup difference of newborn Apgar scores had no statistical significance (P ＞ 0.05).Epidural anesthesia assisted sevoflurane inhalation for cesarean section had no significant effect on neonatal Apgar scores.

Objective To research a computer assisted 3D puncture system. Methods The system drew lessons from the method of CAS. MITK and the frame of X-knife were used to design the machine arm independently. Result The system came to the designing standard by experiments. Conclusion The clinical demanded product is developed with lower price in shorter time by integrating the mature techniques.

Objective To study the occurring regulation of antibody of Urbani sever acute respiratory syndrome (SARS)-associated coronavirus after onset of illness in patients with SARS and investigate the co-infection status of Chlamydiae pneumoniae (Chlamydiae P.) , Mycoplasma pneumoniae (Mycoplasma P.), Adenovirus, Respiratory Syncytia virus (RSV). Methods Serum Antibody IgM and IgG of Urbani SARS-associated coronavirus of 43 patients with SARS and 10 patients with other diseases except SARS at the two different phases of illnesses were detected with immune fluorescent technique. Antibody IgM and IgG of Chlamydiae P., Mycoplasma P., Adenovirus and RSV in the above samples were detected with enzyme-linked immunosorbent assay (ELISA). Results 40 cases' infection of were Urbani SARS-associated coronavirus were determined (93.02%) and 3 cases were negative (6.98%). 10 patients with other diseases except SARS have negative serum Antibody IgM and IgG of Urbani SARS-associated coronavirus. Recent infection rates of Chlamydiae P., Mycoplasma P., Adenovirus and RSV were 25.58%, 16.28%, 6.98% and 4.65% , respectively, and former infection rates of these pathogens were 39.53%, 34.88%, 27.91% and 0, respectively. Antibody IgM of Urbani SARS-associated coronavirus occurred at the same time of onset of fever. Positive rates of IgM were respectively 69.57% and 62.96% in 8～14 days and 15～33 days after onset of fever, and there were no remarkable difference between them, but they were re-markably higher than that in 1～7 days after onset of fever (16.67%). Antibody IgG of Urbani SARS-as-sociated coronavirus occurred at the 6th day after onset of fever. Positive rates of IgG were respectively 19.44%, 65.22% and 92.59% in 1～7 days, 8～14 days and 15～33 days after onset of fever, and there were remarkable difference among them. Conclusions Antibody IgM and IgG of Urbani SARS-associated coronavirus may occur at the early stage of illness in patientswith SARS, which positive cases may increase remarkably 2 weeks later after onset of fever. There may be recent infection and/or former infection of Chlamydiae P., Mycoplasma P., Adenovirus and RSV in some patients with infectious atypical pneumonia. Detection of Antibody IgM and IgG of Urbani SARS-associated coronavirus in sera with immune fluorescent technique can be used on the early diagnosis of SARS.

Objective To investigate the occupational musculoskeletal injury of nurses in a thirdgrade and A-level general hospital in Zhengzhou,and analyze the relationship between occupational musculoskeletal injury and presenteeism.Methods 460 nurses were surveyed with questionnaires by convenience sampling,including nurses' demographic data,Nordic Standardized Questionnaires and Work Limitations Questionnaire.Results The annual incidence rate of OMSI in nursing staff was 82.38％.The parts of body which had high annual incidence rate of nurses' OMSI were lower back,neck and shoulder.The rates of presenteeism for no OMSI,one part OMSI and two or more parts OMSI were 35.14％,52.60％ and 59.68％.The scores of work efficiency decrease were (2.02±1.26),(4.67±2.53),(7.31±3.42).Conclusions Nurses' occupational musculoskeletal injury can result in presenteeism.The more serious occupational musculoskeletal injury is,the higher incidence rate of presenteeism,the more critical the presenteeism is.

Objective To study the relationship between the low level lead exposure of pregnant woman and the gestational age of fetus. Methods The peripheral blood and the umbilical blood samples were collected from 1 000 healthy puerperants and their newborns. The puerperants were divided into three groups according to the blood lead levels: very low-level group(0.483 ?mol/L). Results The rate of premature labor was 9.40% in the very low-level group, 14.07% in the low-level group and 23.81% in the high-level group respectively. The blood lead level of puerperants had a positive correlation with the umbilical blood lead of newborns. The umbilical blood lead of premature was higher than that of mature. As the blood lead level of the pregnants increased, the gestational age shortened and the probability of low age premature increased. Conclusion As for the toxicity of lead to the fetus, there is no a threshold. Low level lead exposure of the pregnant woman is one of the causes of premature labor.

Objective To define the role of HCV-specific cytotoxic T lymphocytes (CTL) in chro-nic hepatitis C virus (HCV) infection. Methods HCV-specific CTL activity (HCV-CTL) was assessed in the liver and peripheral blood cells in 62 patients with chronic hepatitis C and 8 non-HCV-infection controls by using bulk-expanded liver/peripheral blood mononuclear lymphocytes (PBMC)-derived CD8+ cells as effector cells, EBV-transformed B cells as autologous target cells and recombinant vaccinia vectors expressing various regions of the HCV genome as transduction vector, in a standard chromium release assay. Results HCV-CTL activity was detected from the liver in 28 of the 60 patients (46.7%), but not from PBMC. CTL activity could not be detected from the liver and PBMC in all non-HCV-infection controls. Five patients with non-type 1 HCV infection were found to have HCV-specific CTL activity against HCV type 1 epitope. Compared with the patients without detectable HCV-specific CTL activity based on our assay, those exhibiting CTL activity had higher serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels, higher histologic activity indices and lower levels of HCV RNA (all P

Objective To determine the influence of viral factors and host cellular immunity on the response to interferon in the patients with chronic hepatitis C. Methods Forty patients with chronic hepatitis C were treated with interferon ?. The relationships between response to interferon a and HCV genotype, quasispecies heterogeneity, HCV RNA level and HCV specific cytotoxic T lymphocyte (HCV CTL) activity in the liver were analyzed. Results After 6 months of therapy, 21 patients had obtained end of treatment response (ETR), 10 Patients of which had obtained sustained response (SR). The other 19 patients got no response (NR). ETR rate in patients with genotype HCV1 infection (43.3%, 13/30) was significantly lower than that in patients with non HIV1 infection (80%, 8/10) [ P

OBJECTIVE To investigate the effect of the Qingfei decoction in the acute upper respiratory tract infections.METHODS From Jan 2004 to Sep 2006,there were 68 cases with acute upper respiratory tract infections treated with chinese medicines.The patients were divided into 2 groups:36 cases were treated with Qingfei decoction,32 cases were treated with Shuanghuanglian granules as a control.Both of the groups were treated for 5 days,the clinical symptoms such as: fever,cough and sore throat were used to evaluate the efficacy of both groups.RESULTS Both of the groups were effective;the effective rate was 88.9% and 75.0% in the Qingfei group and in the control group,respectively.There was significant difference between 2 groups(P

detection of HIV-1 quasispecies in HIV-1 infected populations with low level viral load.