BACKGROUND: The application of polymerized 2-hydroxyethyl methacryate (PHEMA) in many organs of living body shows good biocompatibility.OBJECTIVE: To observe the biocompatibility and fibrovascular condition of methl-methacrylate (MMA) modified PHEMA hydrogel orbital implant.DESIGN: Single sample observation.SETTING: Department of Ophthalmology, the General Hospital of Chinese PLA; Institute of Polymer Science,Department of Chemical Engineering, Tinghua university.MATERIALS: Twenty-five New Zealand rabbits of either gender and clean grade, weighing 2.0 to 2.5 kg, were provided by the Animal Experimental Center, General Hospital of Chinese PLA. The animals were observed at postoperative 2, 4,8, 12 and 24 weeks, 5 at each time point. The experiment was permitted by ethics committee. MMA modified PHEMA hydrogel orbital implant was provided by Institute of Polymer Research, Department of Chemical Engineering, Tinghua University. The experiment was permitted by ethics committee.METHODS: This experiment was carried out in the laboratory of Department of Ophthalmology, the General Hospital of Chinese PLA from March to October 2003. The right eye served as operation eye. When the rabbits were anesthetized,their eyelids were open with eyelid retractor. Bulbar conjunctiva was open along the edge of limbus of cornea for isolating fascia. Oculorotatory muscle was isolated and pre-set suture line was made, then muscle was cut off. When optical nerve was cut off, eyeball was completely excised. A MMA modified PHEMA hydrogel orbital implant with the diameter of 14 mm was implanted into the fossa orbitalis of rabbits. Single photon emission computed tomography (SPECT) was performed at postoperative 2, 4, 8, 12 and 24 weeks. The hydrogel orbital implant was taken out at postoperative 2, 4, 8,12 and 24 weeks for light microscope, immunohistochemical and electron microscope examinations.MAIN OUTCOME MEASURES: Vascularization of hydrogel orbital implant was observed in vivo by isotope tracing observation at different time points. Vascularization of hydrogel orbital implant was observed ex vivo by light microscope,immunohistochemical and electron microscope observations.RESULTS: All 25 New Zealand rabbits were involved in the final analysis. ①SPECT examination showed that isotope increased around the implants at week 2, and extended gradually at weeks 4 and 8. The radiotracer accumulated evenly in the implants from surrounding to the center at week 12. ②Light microscopic examination of the prostheses revealed fiber vessels grew from the surrounding to the center. At week 2,fibrovascular tissue grew in the hole of implant. Long or round cells with deeply dyed nucleuses were found in the hole, being fibroblasts. The vascular structure in the hole of the implant was clear, and vascular wall and blood cells were found. The inflammatory cells were mainly neutrophils and lymphocytes, and occasionally large macrophages. ③Scanning electron microscope showed that fibrovascular tissue grew in the hole of the implant, and was dense and intercrossed at week 12. ④ Conjunctiva split appeared postoperatively in 1 of 25 cases, and healed well after two times of operation. Conjunctival congestion lessened and conjunctiva healed within postoperative 7 days in the remaining 24 animals.CONCLUSION: MMA modified PHEMA hydrogel orbital implant has good histocompatibility and fast vascularization process, and is easy to be operated with fewer complications. So, it is a safe and practicable new type orbital implant.

Objective To improve the traditional nursing method in the postoperative children with cheiloplasty. Method Using the arm clipboards in 150 postoperative children with cheiloplasty, and then expanded using in 120 children who have accepted other surgery operation. Observed the nursing effects among these children. Results The nursing effects when using this kind of arm clipboards was significant, the re-injection rate was reduced. Conclusion Using arm clipboards among postoperative children can effective improve the nursing quality, and then increase the satisfaction of patients.

Objective To investigate which is better for gastroduodenal endoscopic ultrasound (EUS) between right lateral position and left lateral position of patients guided by nurses. Methods A total of 79 patients were randomly assigned to the left and right lateral position groups. Each patient received EUS examination in three parts, which were sinuses ventriculi, duodenal bulb and descendant duodenum. The operating time and the water volume of each patient were recorded in the procedure of EUS. Results Operating time in sinuses ventriculi, duodenal bulb and descendant duodenum of left lateral position group was (9.0±4.0) min, (6.5±3.2) min and (13.6±10.9) min, while (5.7±3.0) min, (3.6± 1.7) min and ( 6.6±5.7) min in right lateral position group, the differences were significant (t=3.098, 2.190, 3.210, P<0.05) . In the meantime, water volume was (892.0±169.5) ml, (898.6±145.9) ml and (1 012.0± 333.2) ml in sinuses ventriculi, duodenal bulb and descendant duodenum of left lateral position group, while (327.1±79.3) ml, (260.6±30.4) ml and (263.8±17.7) ml in three parts of right lateral position group, respectively. Significant differences were found in water volume among subgroups (t=13.798, 11.290, 4.930, P<0.01 or 0.05). Conclusions In the process of EUS for submucosal lesions at gastric antrum and duodenum, right lateral position instructed by nurses can shorten the operating time and make the procedure easier. This might reduce risks of regurgitation, aspiration, and other related complications.

Objective To assess the application of spiral CT angiography in the diagnosis of Takayasu arteritis.Methods Vascular imaging features of three-dimensional CT angiography of 56 patients with Takayasu arteritis were analyzed retrospectively.Results The vascular imaging of all the patients were qualified for diagnosis.A total of 175 arteries were involved,including subclavian arteries (36.00%,63/175) with a high percentage of the left subclavian arteries (24.00%,42/175) ,common carotid arteries (29.71%,52/175) and renal arteries (10.86%,19/175) .The affected artery wall had varying degrees of concentric or eccentric thickening,and stenosis or occlusion of lumen was observed.Conclusion Threedimensional spiral CT angiography can make clear diagnosis of Takayasu arteritis,including the scope,extent and nature,and thus is worthy of clinical application.

Objective To study the effect of direct cover vitrification (DCV ) on the morphology of follicles from human o‐varian tissue .Methods Biopsies of ovarian tissue was cryopreserved by DCV and some of them was cultured for 7 days .The rates of primordial follicles ,primary follicles and secondary follicles were counted .Results Compared to the fresh group and frozen group ,the percent of primordial follicle of fresh‐cultured group ,frozen group decreased ,primary follicle significantly increased(P<0 .05) .The percent of primordial follicle ,primary follicle ,secondary follicles of fresh‐cultured group were lower than those of fresh group(P<0 .01) .In frozen group ,the rates of the primary and secondary follicles with normal morphology were lower than those of fresh cultured group(P<0 .05) .The rate of normal morphology of secondary follicles of frozen‐cultured group was demonstrably lower than that of fresh‐cultured group(P<0 .05) .Conclusion Partial follicles might be injured in cryopreserved human ovarian tissues by direct cover vitrification .A period of post‐thaw culture may enhance follicle recovery .

OBJECTIVETo investigate the therapeutic effect of reconstruction of facial defects with frontal expanded flaps bipedicled by superficial temple vessels and supraorbital/supratrochlear neurovascular bundles.

METHODSFrom June 2006 to Mar. 2013, the patients with mostly unilateral facial defects which affected temple area and crossed the facial midline, were treated with frontal expanded flaps. The expanders were implanted at first stage and the expanded frontal flaps were transferred at second stage. At third stage, pedicle division was performed and the pedicle skin tissue was used to repair the residue defect.

RESULTAll the 18 flaps survived completely with satisfactory color and texture. Good results were achieved during the follow-up period of one year.

CONCLUSIONThe bipedicled frontal expanded flap has a reliable blood supply which is very suitable for large facial defect.

Adolescent ; Adult ; Child ; Face ; surgery ; Female ; Humans ; Male ; Reconstructive Surgical Procedures ; methods ; Skin Transplantation ; methods ; Surgical Flaps ; blood supply ; Treatment Outcome ; Young Adult

Objective To study the safety of Danhong injection in application for providing reference to clinical drug usage.Methods 942 patients using Danhong injection from June 2010 to October 2011 in our hospital were chosen and asked to fill in the monitoring sheet of Danhong injection post-market re-evaluation.The data in these sheets were analyzed.Results Among the 942 selected cases,454 were male and 488 were female.The youngest patient was 15 years and the oldest was 102 years.The average age of the patients was 64.5 years.799 cases of patients were over the age of 50,accounting for 84.82％.20 cases had a history of allergy.815 cases took the injection for 7 to 14 days.150 cases used 5％ GS as solvent,while 792 cases used 0.9％ NS as solvent.4 cases of adverse drug reaction were discovered in 942 cases,and the incidence rate was 0.42％.Conclusion The incidence rate of adverse drug reaction is low.The incidence of adverse reaction has no relationship with diseases,age and gender of patients,solvent and dose.Adverse reaction of Danhong injection is mainly related to the patient's individual differences.

A method for the quantitative monitoring of sulfadiazine (SD) residues in pork was established by molecular imprinted column coupling with high performance liquid chromatography (HPLC).The molecular imprinted column was selected as an extraction device.To obtain the optimum extraction efficiency,several parameters related to the molecular imprinted column,including column solvent,flow-rate,eluent of the sample matrix and eluent volume,were investigated.The sample solution was directly injected into the device for the extraction after simple extraction.Under the optimum conditions,the relative standard deviations (RSD) was ≤6.1％ and the recoveries for SD were higher than 75.6％.In comparison with the AL-SPE column,the MIP-SPE column had good reusability and extraction efficiency.This method was successfully applied to the determination snlfadiazine residues in pork.

Objective Electric stimulation functional observation statistics (FES) were collected for elderly patients with cerebral apoplexy in search of any curative effect. Methods A total of 40 patients with cerebral apoplexy were divided randomly into a FES group of 20 cases and a control group of 20 cases. Both groups received the same routine rehabilitation training and basic drugs. The FES group was also treated using FES therapeutic apparatus for 30 min daily over 3 weeks (15 sessions). The control group received no electrical stimulation. Upper limb motor function, lower limb motor function, balanceand Barthel's index were evaluated. Results In the FES group, upper limb motor function was significantly improved after treatment, and significantly better compared with the control group. Lower limb motor function showed the same significant differences. Balance was also significantly better after treatment and significantly better than in the control group. Similar significant improvements were seen in terms of Barthel's index. Conclusions FES can improve the functional capacity of elderly patients with cerebral apoplexy hemiplegia and improve their ability in daily activities.

Objective To establish the method for determination of astragaloside Ⅳ in Fufang Buqi Yangxue Oral Solution by RP-HPLC.Methods The content of astragaloside Ⅳ was determined by a HPLC system under the following conditions:the chromatographic column was Agilent C18(150 mm? 4.60 mm,5? m),the mobile phase was acetonitrile-water(60:40),the flow rate was 1.0 mL? min-1,and the detection wavelength was at 203 nm.Results Astragaloside Ⅳ showed good linearity in the range of 0.34～ 3.40 ?g(r=0.999 9).The average recovery was 100.8 %,and RSD was 1.47 %(n=6).Conclusion The HPLC method is simple and reproducible,and can be used for quality control of Fufang Buqi Yangxue Oral Solution.