Modiastinoscopy is an invasive method with very high sensitivity and specificity, which has an unreplaceble role in diagnosis of indeterminate mediastinal masses and staging of lung neoplasms. Video me-diastinoscopy provides optimal visualization of mediasfinal structure and the possibility for the surgeon to operatewith both hands. And more operation can be performed by video mediastinoscopy. Now video mediastinoscopy has been replacing traditional mediastinoscopy gradually.

The paper proposed a new method to design and fabricate a flexible neural microelectrode arrays (MEA) for retinal prosthesis, the ion-beam technology was introduced to decrease the width of conductive wires and the distances between wires, a high density MEA (120 microelectrodes with a matrix of 10 x 12) was fabricated on a single layer of polymer from this. The MEA was proved to possess a fine electrochemical property. In vitro test, the average impedance of MEA on 1 kHz was 16 k omega +/- 2 k omega and the average phase difference was -85 degrees +/-30 degrees.
Micro-Electrical-Mechanical Systems ; Microelectrodes ; Prosthesis Design ; Visual Prosthesis

Adult ; Ear Canal ; Female ; Hearing Loss, Conductive ; surgery ; Humans ; Male ; Mastoid ; surgery ; Middle Aged ; Postoperative Period ; Tympanoplasty

Objective To explore risk factors,prevention and treatment of common complications of benign esophageal stenosis treated with the retrievable covered stents in children.Methods Fifteen cases,diagnosed as benign esophageal stenosis by barium esophagogram were treated with retrievable covered stents under fluoroscopy,Then the stents were removed after 2-3 weeks.The cases were followed-up and complications were observed.Results The stents were successful implanted in all cases.The diet was improved obviously after operation,and gradually transformed from liquid,semiliquid to normal feeding.At the same time,narrow section gradually expanded from 0.1-0.6 cm to 0.6-1.5 cm.Postoperative follow-up was in 1,2,3 weeks and 3 months.Main complications were stents shift in 5 cases,esophageal restenosis in 2 cases,esophageal-tracheal fistula in 1 case,postoperative dull pain behind sternum and foreign body sensation in 6 cases.Relevant preventions and treatments were performed based on different complications.Conclusion It should not be ignored that complications after covered stent placement are more in children than in adults,preventions and treatments should be taken positively.

Objective To observe the action of Rhodiola Crenulate(RC) oral liquid reproduction function for the male rats. Methods 100 SD rats were randomly divided into 5 groups with equal gender number respectively. The male rats were given RC oral liquid (0, 2.48 g/kg, 7.48 g/kg, 24.80 g/kg) and Nanbao (2.00 g/kg)by oral twice a day for 48 d, respectively. Then the male rat was put into the same box in which the female rat whit two-side ovarys were excised for 15 d, respectively. The intercoursing ability,testosterone levels, and the weight of immune organs of the male rats were examined. 40 four-week-old rats were divided into 5 groups. Except for blank control, all rats's testis were excised. The castrated rats were treated with RC oral liquid (2.48 g/kg, 24.8 g/kg)and Methyltestosterone (2.00 mg/kg). The blank control group and model control group were given the same dose NS by oral twice a day for 28 d, respectively. The weight of accessory sex organs in castrated rats was observed. Results The level of testosterone and the organ coefficients of thymus and spleen in RC oral liquid groups were higher than blank control (P<0.05 or P<0.01).The weight of accessory sex organs of castrated rats in RC oral liquid groups were heavier than model control (P<0.05). Conclusion RC oral liquid can improve the reproduction function in male rats.

Adolescent ; Adult ; Child ; Cholesteatoma, Middle Ear ; surgery ; Ear, Middle ; Female ; Humans ; Male ; Middle Aged ; Young Adult

Objective To explore the principle of diagnosis and treatment of early postoperative inflammatory ileus. Method To retrospectively analyse the clinical data and treatment results of early postoperative inflammatory ileus. Results 15 cases after fasting, decompression, nutritional support, somatostatin and dexamethasone, and other conservative treatment were cured. Conclusion Early postoperative inflammatory ileus usually occurred in 2 weeks, has a typical performance of the obstruction, conservative treatment is effective.

Objective To evaluate the curved cutter stapler in the anus-preserving surgery of low rectal cancer. Methods To retrospectively analyse the clinical data of the application of the Curved Cutter Stapler in the anus-preserving surgery of low rectal cancer from 2006 to 2008. Results All the eases of patients with low rectal cancer received the anus-preserving surgery,one of them occurred in sub-clinical small fistula who recovered by con-servative treatment,no anastomofic leakage and no local recurrence occurred,two patients were died in 12,14 months after surgery. Conclusion The Curved Cutter Stapler has an advangtageous position in the anus-preserving surgery of low rectal cancer, can increase the rate of the anus-preserving.

Objective To explore what kind of role serum interleukin 6 (IL-6) and interleukin 18 ( IL-18) play in the relationship between type D personality and acute coronary syndrom (ACS)prognosis.Methods Serum levels of IL-6,IL-18 in all 214 ACS patients were measured with ELISA.According to the scores of type D personality scale(DS14) ,the subjects were divided into the group with type D personality (50 cases)and the one without type D personality ( 164 cases).The serum IL-6 and IL-18 level between the two groups were detected and analyzed.Results There were 23.36% ACS patients with type D personality.The serum IL-6, IL-18levels of the group with type D in ACS acute stage and ACS recovery stage were (2.340 ± 0.081 )OD, (2.016 ±0.023 ) OD and ( 1.460 ± 0.070 ) OD, ( 1.313 ± 0.012 ) OD respectively, significantly higher than those of the group without type D (2.178 ± 0.180)OD, ( 1.849 ± 0.159)OD and ( 1.387 ± 0.091 )OD, ( 1.196 ± 0.132 ) OD respectively(P＜0.01).Conclusion At home and abroad ,there are similar amount of ACS patients with type D personality.The high serum IL-6 and IL-18 levels may play an important role in pathogenesis of relationship between type D personality and ACS poor prognosis.

Adolescent ; Adult ; Audiometry, Pure-Tone ; Cartilage ; surgery ; Child ; Female ; Hearing Loss, Conductive ; surgery ; Humans ; Male ; Middle Aged ; Myringoplasty ; methods ; Periosteum ; surgery ; Retrospective Studies ; Tympanic Membrane Perforation ; surgery ; Young Adult