Bidding invitation and procurement of medical equipment is one of the most important works in hospital.It can increase the working efficiency to hold the key taches of medical equipment procurement from 4 aspects including the science of decison-making,the comfirmability of bidding invitation,the right choice of the way of bidding,etc.So some important taches of medical equipment procurement are analyzed and discussed and some points for attention are raised.[Chinese Medical Equipment Journal,2008,29(2):76-77]

Data quality issues of TCM structured data warehouse system is very important.This paper analyzed the data quality issues from the data repository to the data extraction,cleansing,transformation,loading (ETL) into the data warehouse process and established the principle of corresponding control,and researched improving data quality measures to ensure the success of data warehouse and right decision support.

Objective:This paper aims to explore the relationship between the residents’ health and economic de-velopment to provide a scientific basis which will promote the coordinated economy and health development. Methods:Adopting the entropy method, we could calculate the comprehensive health evaluation index. In combining the co-inte-gration and error correction models, we could analyze the long-term and short-term relationships between our country residents’ level of health since 2000 and the national macro-economic development information. The Granger causality test served as a good method used in testing the casual relationships. Results: The health and economic development has a co-integration relationship which is -0. 6216 in the short-term correction. The economic development extent is the Granger cause of residents’ health status. Conclusion:There is not only a long-term equilibrium, but also a short-term relationship between the residents’ health and economic development in our country. The economic growth pro-motes residents’ health status while the promotion of residents’ health to economic growth is not obvious.

Objective To evaluate selective retention of the great saphenous vein (GSV) belowknee in the prevention of saphenous nerve injury during varicose veins surgery.Methods From January 2009 to January 2012,280 consecutive patients with incompetence of the GSV resulting in varicose veins were prospectively randomized into 2 groups.Patients in the experimental group underwent stripping restricted to the below knee level,patients in control group underwent GSV stripping to the ankle level Patients in the two groups were treated with transilluminated powered phlebectomy,and foam sclerotherapy.Primary end points were postoperative pain,saphenous nerve injury,quality of life and recurrence rate.Results After one month follow-up:5.71％ patients had symptoms of nervous system in the observation group,14.29％ patients had symptoms of nervous system in the control group (P =0.02).After 1 year follow-up,1.47％ patients had symptoms of nervous system in the observation group,7.14％ patients had symptoms of nervous system in the control group (P =0.02).Conclusions Selective retention of great saphenous vein below-knee decreases saphenous nerve injury.

Objective To study the cerebral energy metabolism changes of acute exacerbation of chronic obstructive pulmonary disease (AECOPD) through hydrogen magnetic resonance spectroscopy examination (1 HMRS ) and its relationship with partial pressure of oxygen / carbon dioxide tension.Methods Totally 13 cases of AECOPD patients and 10 cases of age-matched healthy people underwent HMRS examination.The ratios of n-acetyl-aspartate(NAA)/creatine(Cr),choline (Cho)/Cr,myo-inositol(MI)/Cr of parieto-temporal and occipital areas of brain were detected.Blood gas analysis were also used to detect partial pressure of oxygen (PaO2) and carbon dioxide (PaCO2).Results NAA / Cr of parieto-temporal and occipital areas of brain (1.32±0.12,1.48±0.12) were lower in AECOPD group than those in control group (1.45±0.11,1.58±0.10) (P＜ 0.05),MI/Cr (0.23±0.07,0.30±0.11) were also decreased compared with control group (0.40±0.14,0.46±0.12) (P＜ 0.01),while Cho/Cr of parieto -temporal and occipital areas of brain between the AECOPD group and control group showed no significant difference (P＞0.05).NAA/Cr of parieto temporal and occipital areas of brain were positively correlated with PaO2 (r=0.46 and 0.44),and MI/Cr of these areas of brain were also positively related with PaO2 (r=0.63 and 0.50),but MI / Cr of parieto tempora was negatively correlated with PaCO2 (r =- 0.472). Conclusions Cerebral metabolite changes may occur in AECOPD patients,and this has relationship with hypoxia and carbon dioxide retention.

Objective To explore the effect of a multimodal electroencephalogram ( EEG) data visualiza-tion system on the motor imagery ability of stroke survivors. Methods Twenty stroke patients were randomly di-vided into an experimental group and a control group, each of 10. Both groups were provided with brain-computer interface-based motor imagery ( MI) training. At the same time, the experimental group was monitored and guided using an online, multimodal EEG data visualization system developed in our department. The classification accuracy ( CA) and event-related desynchronization ( ERD) of the 2 groups′ motor imagery were compared before and after the treatment. Results Before the treatment, no significant differences in the average CA of MI were found be-tween the experiment group (50.92±2.08) and the control group (49.35±4.20)(P>0.05). After the treatment, however, the experimental group′s average CA had increased to (64.52±5.27), significantly higher than that of the control group (51.18±5.02). When the stroke patients imaged affected upper extremity movements, obvious ERD was observed in the α frequency around the bilateral central motor regions of both groups, especially in the experi-mental group, but without significant differences between the two groups. However, no significant changes were found in the ERD of theβwaves of the two groups( P>0.05) . Conclusion The proposed online multimodal elec-troencephalogram data visualization system can help stroke patients imagine movements actively. It is worth sprea-ding in clinical practice.

Objective To explore the effect of electroacupuncture at Quchi (LI11), Zusanli (ST36) on differentiation of neural stem cells after cerebral ischemia-reperfusion in rats. Methods Thirty-six male Sprague-Dawley rats were randomly divided into sham group (n=12), model group (n=12) and electroacupuncture group (n=12). The latter two groups were occluded the left middle cerebral arteries for 90 min-utes and reperfused. The electroacupuncture group received electroacupuncture at Quchi and Zusanli acupoints for 21 days. They were evalu-ated with modified Neurological Severity Scores 7, 14 and 21 days after electroacupuncture. Their infarct volumes were tested with MRI T2WI 21 days after electroacupuncture, while the differentiation of neural stem cells was observed with double-immunopositive BrdU/Dcx and BrdU/NeuN. Results Compared with the model group, the neurological deficits score improved in the electroacupuncture group in all the time points (P<0.05). The infarct volumes decreased in the electroacupuncture group (P<0.05), with less number of BrdU+/Dcx+cells in subventricular zone (P<0.001) and more number of BrdU+/NeuN+ cells in peri-infarct cortex (P<0.001) 21 days after electroacupuncture. Conclusion Electroacupuncture at Quchi and Zusanli acupoints can improve neurological function and decrease the infarct volumes in rats after cerebral ischemia-reperfusion, which may be associated with promoting differentiation of neural stem cells to neurons.

This study was aimed to optimize the extraction process of double-marker components for Arctium lappa L. The central composite design and response surface methodology was used. According to 3 main factors, the extraction rates of arctiin and arctigenin was used as evaluation indexes. Multiple linear regression and two-order polynomial equation were used. The binomial fitting model was performed in the optimization of arctiin and arctigenin extraction technology. The results showed that the indentified optimized extraction technology of arctiin and arctigenin was 70% ethanol, 24-fold, ultrasonic solvent extraction for 15 minutes. It was concluded that this technology was able to extract large amount of arctiin and arctigenin, which provided experiment evidences for arctiin and arctigenin preparation. It also provided references for the development and utilization of arctiin and arctigenin.

CMTM family is silenced and down-regulated in several kinds of tumors.Its aberrant expression has a strong association with the development,progression and metastasis of tumors.Thus,CMTM family is potential tumor suppressor genes.Epigenetics mechanism is the essential mechanism of the aberrant expression in this gene family.The discovery of this research gives a new direction to the clinical treatment of tumor.

Objective To explore the clinical characteristics of the lesions of spinal cord and optic nerve as the onset of neuromyelitis optica (NMO).Methods A total of fifty-one patients with myelitis or optic neuritis (ON) as the onset of NMO who hospitalized in our Neurology Department during October 2010 to October 2012 were enrolled in the study.Clinical presentations and MRI findings of the spinal cord and brain were studied.Results (1) A total of 26 cases (51.0％) presented with myelitis as the index event,in which 30.8％ (8/26) were the longitudinally extensive transverse myelitis (LETM) and 69.2％ (18/ 26) were non-LETM (short segmental myelitis or non-transverse myelitis).Patients with non-LETM as the onset were found to have better prognosis than those with LETM (full recovery ratio was 13/18 vs 2/8,P ＜ 0.05),while shorter recurrence interval of myelitis and higher recurrence frequency of events were shown in patients with non-LETM (11.1 vs 18.6 months,3 times per year vs once per year,with all P ＜ 0.05).(2) A total of 25 cases (49.0％) presented with ON as the index event with 24.0％ (6/25) of unilateral ON and 76.0％ (19/25) of bilateral ON.Patients with bilateral ON had more severe visual impairment and shorter first remission period than those with unilateral ON (P ＜ 0.05).Conclusion Non-LETM and bilateral ON are the most common index demyelinating events in NMO cases.