Objective To compare the effect of target-controlled infusion (TCI) and manual controlled infusion (MCI) of propofol in out-patients undergoing gastroscopy with the sedative depth monitoring by bispectral index (BIS).Methods Forty-eight patients with physical status Ⅰ-Ⅱ scheduled for an elective gastroscopy under general anesthesia were enrolled in this study. All patients were randomly divided into two groups, group T (n=24) and group M (n=24). Before induction, all patients were received a single dose of fentanyl (1 ?g/kg) intravenously. With the monitoring of BIS, the gastroscope was inserted in by the time of BIS value less than 60. Patients in group T received a propofol infusion with the initial plasma concentration of 1 ?g/ml and then the dose was titrated upward by 0.5 ?g/ml each time till the BIS values was less than 60 and then propofol was maintained at a concentration of 2-3 ?g/ml. In the group M, propofol was infused at a rate of 4 g/h until the BIS was less than 60 and then propofol was administrated at a rate of 4-6 mg?h -1?kg -1. During the period of gastroscopy, the sedation depth was maintained by BIS value of 40 to 60. The infusion was stopped by the end of biopsy in both groups. The time from induction to put in the endoscopy, the examination maintenance and the duration of anesthesia, the induction and total amounts of propofol infused were recorded and the average infusion rate was calculated. Results The induction time was significantly shorter in group T than in group M. The duration of examination, time from the induction to opening the eyes and time from induction to the orientation were not significantly different between two groups. Propofol consumption for induction and maintenance was much higher in group M than in group T. The average infusion rate was not significantly different in both groups. The BIS values were almost same at the beginning of gastroscopy and at opening the eyes. The plasma concentration and effect-site concentration were (4.25 ?0.94) ?g/ml and (1.78?0.66)?g/ml at the time of beginning of gastroscopy; while being (1.34?0.39) ?g/ml, ( 1.77?0.40) ?g/ml at the time of opening the eyes. There were 3 cases in group T and 7 cases in group M had sidereactions during the gastroscopy, respectively, but all were mild. Conclusions BIS could be a good sedative depth monitor in total intravenous anesthesia in out-patients gastroscopy. Target-controlled infusion system can help us to get accurate depth of anesthesia quickly and stably, and decrease the consumption of propofol and side effects as well.

Epiretinal membrane (ERM) is a relatively common macular disease that forms along the surface of the internal limiting membrane (ILM) of the retina to some reason.The pathogenesis is not clear.Microincision vitrectomy surgery has been confirmed as a minimally invasive and very safe modality of treatment.Deciding when to perform a vitrectomy can be difficult.There are many factors which can affect the postoperative visual acuity,such as age,the thickness of macular,integrity of photoreceptor inner segment/outer segment (IS/OS) junction.

Objective To enhance the clinical diagnosis efficiency and accuracy of diabetic retinopathy (DR) to facilitate its early finding and diagnosis.Methods Image segmentation method was used to process and analyze DR vessel.Clinical images by fundus fluorescein angiography (FFA) were used as the objects for the research on DR vessel segmentation and extraction.Results Image processing and analysis gained higher definition and accuracy in segmenting the normal retinal image and DR vessel when they were compared with the fundus image and FFA image.Conclusion The method proposed enhances the early diagnosis of DR by processing and analyzing the retinal vessel,and thus contributes to the increased living quality of the patient.

Articulation Disorders ; surgery

Cheek ; pathology ; Head ; pathology ; Humans ; Keratosis ; diagnosis

Complement Factor H ; genetics ; Hemolytic-Uremic Syndrome ; genetics ; Humans

Adolescent ; Anti-Asthmatic Agents ; therapeutic use ; Asthma ; blood ; drug therapy ; Child ; Child, Preschool ; Female ; Glucocorticoids ; therapeutic use ; Humans ; Infant ; Interleukin-23 ; blood ; Male

Animals ; Apoptosis ; Hypoxia-Inducible Factor 1, alpha Subunit ; Hypoxia-Ischemia, Brain ; genetics ; pathology ; Neurons ; cytology ; metabolism ; RNA, Messenger ; analysis ; Rats ; Rats, Sprague-Dawley ; Transcription Factors ; genetics

This experiment was based on a full-length SAMDC sequence from the drought stress induced cDNA library of Cleistogenes songorica.Two methods,absolute quantification and relative quantification,were used to analyze the gene expression under different tissue and drought stress treatment by real-time quantitaive PCR experiments and were compared each other,while CsSAMDC gene was used as a case.Leaves and roots tissue were sampled from the plants at 0,4,6,8,and 10 d of drought stress and 1 and 4 d after rewatering.The 2-CT method was used to analyze the relative changes in gene expression from quantitative real-time PCR experiments.A standard curve was generated by the purified plasmid DNA.The primer concentration in the realtime PCR was optimized.All absolute quatification data were normalized by the normalization factor from the most stable house-keeping genes in C.songorica.Relative quantification results using 2-CT method showed that CsSAMDC transcripts increased 5.93?0.71 fold in roots,down regulated 0.62?0.13 fold in leaves,under drought stress.Absolute quantification results showed that CsSAMDC transcripts up-regulated in roots significantly under drought stress as 1ong as 8 to 1 0 days after drought stress,while down-regulated in both roots and leaves after drought stress within 6 days and 1 to 4 days after rewatering,compared with control.CsSAMDC transcipt showed similar tendency of gene expression compared by using relative and absolute quantification methods.

Objective To investigate the correlation between extended high-frequency audiometry and distortion product oto acousticemissions (DPOAE) amplitudes. Methods 60 normal hearing people aged 20~40 years were examined with extended high-frequency audiometry and DPOAE. Results Extended high frequency thresholds negatively correlated to DPOAE. Conclusion There is correlation between these two methods, and they can be used for early creening and diagnosis of hearing loss.