Objective To explore the clinical effect of double micro-catheter technique for detachable coil treatment of intracranial an-eurysms. Methods From January 2010 to April 2014,there were a total of 83 patients with cerebral aneurysms treated with double micro-catheters,and the ratio of neck/body was 1/3~1. The double micro-catheters were positioned within aneurysm. The detachable coils were in-troduced to satisfactory position by different ways. There was always one undetached coil to hold the stability of detached coils till aneurysm compactly embolized. Results 83 cases were instantly compactly embolized with double micro-catheter technique. No coils out of aneurysm. There were two cases of ischemic complication during clinical treatment,one of them was died. One case ruptured during operation. Conclu-sion The double micro-catheter technique may be an optional and safe method during embolization of some cerebral aneurysms.

AIM: To study the effects of droperidol on the enhancement of persistent sodium currents induced by in vitro ischemia-like condition in isolated rat CA1 paramidal neurons. METHODS: Whole-cell patch-clamp recordings were made from enzymatically isolated rat CA1 hippocampal paramidal neurons. Ischemia was induced by oxygen and glucose deprivation. RESULTS: All of 3, 10 ,and 30 ?mol?L -1 of droperidol significantly inhibited the enhancement of persistent sodium currents induced by ischemia, but the different concentrations did not show significant difference. CONCLUSION: Droperidol in clinical concentration can inhibit the enhancement of persistent sodium current induced by ischemia.

[Objective]To investigate the effect of using Minimully invasive percutuneous plate osteosunthosis to insert DHS for fixation of intertrochanteric hip fractures in elderly patients,in order to reduce operative trauma.[Method]To study retrospectivly 75 cases of the intertrochanteric fracture of elderly patients treated with DHS,these patients were treated from july 2004.7 to october 2005.10.MIPPO was used in 29 out of 75 cases,classic technique for fixation was used in other ones.[Result]All patients successfully discharged except two died because of fungal septicemia and lung embolism.Totally 73 cases were followed up from 7 to 21 months(averagd 12.3 months),one died of morbus internus in follow-up period.All the fractures had successful union,union time in average was 3.5 months,the diference between MIPPO group and classic incision group was not distinguished.Blood loss and transfusion in MIPPO group was less than classic incision group.Recovery of ESR and detumescence of the femoral was quickly in minimal incision group,time in bed was short.[Conclusion]Technique of minimal invasive fixation using DHS has little trauma and quick functional recovery for patients,therefore,this technique should be better for treatment of intertrochanteric fracture in elderly patients.

Objective of this study is to re-compute the national hospitalization rate in China using the second-hand data and explore the practical use of systematic review in health policy research field.Methods Domestic literatures on hospitalization rate in the last six years were collected and quality assessment was done.Merging analysis was used based upon systematic review approach.Results 25 reported literatures on hospitalization rate of urban and rural residents were included into the study.After merging analysis,the hospitalization rates were 4.70% for the country,5.31% for the urban and 4.26% for the rural.They are higher than the reported hospitalization rate in National Health Services Survey (NHSS)in 2003.After merging with the NHSS data,the hospitalization rate were 4.12%,4.85% and 3.82% respectively.Conclusions Systematic review can be applied in health service and policy research field.Data merging and information processing methods are diversified and could be selected upon research purpose and data attribute.Computation methods in systematic review in health policy research still need to be developed.

Objective To evaluate the feasibility of using auditory evoked potential index(AAI) to monitor the depth of nitrous oxide anesthesia. Methods Sixteen ASAⅠ-Ⅱpatients aged 23-64 years, weighing 51-86 kg scheduled for elective surgery under general anesthesia were studied. Patients with psychoneural diseases and hearing disturbances were excluded. The patients were premedicated with phenobarbital sodium 0.1g and atropine 0.5mg. AAI, BIS, 95% SEF, BP, HR, SpO2 monitoring were started before induction of anesthesia. The patients were preoxygenated for 5 min using a close-fitting face mask and 100% O2 at l0L?min-1 . Inhalation of nitrous oxide was then started. Nitrous oxide concentration was gradually increased in increments of 10% from 0% to 70% . AAI, BIS and 95%SEF were recorded and observer's assessment of alertness/sedation (OAA/S) scores were measured at each 10% increment of end-tidal nitrous oxide concentration which was maintained for 5 min. The correlation between AAI, BIS, 95% SEF and OAA/S scores was analyzed. Results OAA/S scores and AAI decreased as the nitrous oxide concentration increased. AAI correlated closely with OAA/S scores and end-tidal nitrous oxide concentration (the coefficients of Spearman' s rank correlation ? = - 0.739, 0.837, P

Objective To study the effects of propofol on enhancement of persistent sodium currents in isolated rat hippocampal CA1 pyramidal neurons induced by ischemia. Methods Whole-cell patch clamp recordings were made from enzymatically isolated SD rat hippocampal CA1 pyramidal neurons. Ischemia was induced by anoxia and glucose deprivation. Results Both propofol 10 umol.L-1 and 100umol . L-1 significantly inhibited the enhancement of persistent sodium currents induced by ischemia and the effect of propofol 100 umol. L-1 was significantly greater than that of propofol 10umol.L-1 . Propofol 1 umol.L-1 didn't have any significant eflect on the enhanced persistent sodium currents induced by ischemia.Conclusion Propofol can inhibit the enhancement of persistent sodium currents induced by ischemia. It may explain the cerebral protective effect of propofol.

Objective To explore the assessment of precision, accuracy, and quality control(QC) procedures needed to satisfy the external quality assessment criteria with "operational process specifications" (OPSpecs) derived from an analytical quality-planning model. Methods The routine operating specifications were presented in the form of an OPSpecs chart, which described the operational limits for imprecision and inaccuracy when a desired level of quality assurance was provided by a specific QC procedure. Results OPSpecs charts could be used to compare the operational limits for different QC procedures and to select a QC procedure that was appropriate for the precision and accuracy of a specific measurement procedure. The inaccuracy and imprecision observed for a measurement procedure was plotted on the OPSpecs chart to define the current operating point, which was then compared with the operational limits of candidate QC procedures. Conclusion The general design approach is applicable in all instrument systems.

Objective To evaluate the effect of intrathecal IL-10 gene on neuropathic pain induced by chronic constriction injury (CCI) to the sciatic nerve. Methods Sixty female SD rats weighing 230-250 g were anesthetized with pentobarfaital. Right sciatic nerve was exposed at the midthigh level and 4 ligatures were placed on the sciatic nerve with 4.0 catgut at 1mm interval. Intrathecal catheter (PE-10 tubing) were inserted at L5,6 interspace and correct placement was confirmed by outflow of CSF. The animals were randomized into 5 groups ( n = 12): group Ⅰ sham operation; group Ⅱ CCI; group Ⅲ,Ⅳ and Ⅴ received intrathecal (IT) normal saline (NS) (Ⅲ) or pcDNA 3.1 (Ⅳ) or pcDNA 3.1-IL-10 (Ⅴ) 3 days after CCI when the animals developed thermal hyperalgesia. Threshold to noxious thermal stimuli was measured before CCI (baseline), before and 2, 4, 7, 10 and 14 days after IT injection. CSF was collected on 1, 3, 7 and 10 days after IT injection for determination of CSF IL-10 concentration. Six animals were killed on 3rd and 14th days after IT injection respectively in each group and the sciatic nerve, lumbar segment of spinal cord ( L3-6) and hippocampus were isolated and blood was collected for determination of IL-10 mRNA expression (by RT-PCR) (on 3rd day after IT) and TNF-? content (on 14th day after IT) .Results Paw removal latencies were significantly longer 2-14 days after IT injection in group Ⅴ(CCI + pcDNA 3.1-IL-10) than in group Ⅲ (CCI + NS) and Ⅳ (CCI + pcDNA 3.1). The IL-10 mRNA expression in sciatic nerve, lumbar segment of spinal cord and hippocampus was significantly higher 3 days after IT injection while their TNF-? contents were significantly lower 14 days after IT injection in group Ⅴ than in the other 4 groups. The CNS IL-10 concentration on day 1-7 after IT injection was significantly higher in group Ⅴ than in the other 4 groups. Conclusion Intrathecal IL-10 gene injection can ease pain induced by CCI of the sciatic nerve through inhibition of inflammatory response.