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find Keyword "气体" 31 results
  • Intravitreal injection of C3F8 in the treatment of vitreomacular traction syndrome

    ObjectiveTo evaluate the efficacy of single intravitreal injection of C3F8 in treating vitremacular traction (VMT) syndrome.MethodsA retrospective case series of 38 eyes of 36 patients affected with VMT syndrome in Department of Ophthalmology, Central Theater Command General Hospital from March 2016 to June 2017 were enrolled in this study. There were 16 males (16 eyes) and 20 females (22 eyes), with the mean age of 64.11±9.49 years and the mean courses of 151.55±127.87 days. All the patients received an intravitreal injection of 0.3 ml of 100% C3F8 within one week. The BCVA examination was performed using the international standard visual acuity chart, which was converted into logMAR visual acuity. The severity of metamorphopsia was detected using M-charts. The extent of vitreomacular adhesion (VMA), central macular thickness (CMT) and the status of ellipsoid zone (EZ) were assessed with spectral-domain OCT at baseline and each month after treatment. The average BCVA was 0.58±0.22. The mean horizontal metamorphopsia (MH) and vertical metamorphopsia (MV) were 0.34±0.30 and 0.50±0.42, respectively. The mean CMT was 415.15±89.59 μm. The mean horizontal VMA was 1168.68±400.61 μm (30 eyes with VMA≤1500 μm and 8 eyes with VMA>1500 μm). The mean vertical VMA was 976.89±295.92 μm. There were 22 eyes with integrity EZ and 16 eyes without integrity EZ, 33 eyes with crystalline lens and 5 eyes with IOL. The mean follow-up time was 10.7 months. The differences in BCVA, MH, MV, CMT, the integrity of EZ before and after treatment were analyzed. The VMT release rates were assessed. The Spearman rank correlation analysis was performed to investigate the relationship of VMT release rates with the data at baseline.ResultsVitreomacular traction release occurred in 29 of 38 eyes by the final follow-up visit, the VMT release rate was 76.3%. VMT release occurred and the average time of VMT release occurred was 2.2 weeks. VMT persisted in 7 eyes, in the rest two eyes, one eye developed a retinal detachment and another eye formed macular hole, both eyes responded to vitrectomy. At 6 months after treatment, the average logMAR BCVA was 0.43±0.23, the mean MH and MV were 0.25±0.23 and 0.24±0.23, the mean CMT was 310.61±63.10 μm. Among 16 eyes without integrity EZ before treatment, there were 9 eyes with integrity EZ at 6 months after treatment. There were 16 eyes with integrity EZ and 9 Compared with baseline, the mean BCVA at 6 months after treatment was significantly increased (F=3.779, P=0.037), but the MV (F=4.958, P =0.003) and CMT (F=13.419, P<0.001) were significantly decreased, the integrity of EZ was improved significantly (χ2=5.050, P=0.025). The VMT release correlated inversely with the extent of horizontal VMA, BCVA, and CMT at baseline (r=-0.514, -0.348, -0.429; P=0.009, 0.001, 0.038).ConclusionIntravitreal injection of C3F8 can induce a posterior vitreous detachment and release vitreomacular traction, it is an efficient and safe treatment for VMT syndrome. It can improve the visual acuity, metamorphopsia and foveal morphology in patients with VMT syndrome.

    Release date:2019-05-17 04:15 Export PDF Favorites Scan
  • N2O气体和氧气戏入对玻璃体切割术后眼内存在C3F8 气泡的免眼眼压影响的观测

    Release date:2016-09-02 05:52 Export PDF Favorites Scan
  • 危险点分析预控系统在医用气体管理中的应用

    针对大型综合医院医用气体供应管理现状,应用危险点分析预控系统的相关理论及方法,识别、查找、筛选、确定其医用气体供应管理存在的危险点,并就各危险因素,采用预防技术措施和应急预案,以确保特别状况下医用气体的安全供应。开展危险点分析及预控是做好医用气体供应与管理的关键。

    Release date:2016-09-08 09:13 Export PDF Favorites Scan
  • A Comparative Study on Three Different Airway Humidification Methods for Patients with Artificial Airway Offline

    ObjectiveTo compare the effects of different airway humidification methods for patients with artificial airway offline. MethodsOne hundred and fifty-five critically ill patients with artificial airway who did not need mechanical ventilation for more than 72 h, admitted in the Affiliated Hospital to Armed Police Logistics College between January 2012 and December 2012, were recruited in the study.They were randomly divided into 3 groups to receive different airway humidification treatment, ie.MR410 device for group A, MR850 device for group B, AIRVO2 device for group C.PaO2, SpO2, heart rate, and breathing frequency were measured after 72 h.The Airway Scoring System was used for evaluation of sputum viscosity.The time of pulmonary infection control was also recorded. ResultsThere were no significant differences in gender, age, underlying diseases, duration of artificial airway, and APACHEⅡscore among three groups (P > 0.05).There were significant differences in respiratory frequency, PaO2, SpO2, heart rate, sputum viscosity, humidification effect, lung infection control time among three groups (P < 0.05), with group C better than group A and B in above parameters. ConclusionsCompared with MR410 and MR850 humidification devices, AIRVO2 is a more ideal device for airway humidification, and is more suitable for patients with artificial airway offline.

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  • 多次玻璃体腔C3F8填充治疗先天性视盘小凹合并视网膜劈裂症一例

    Release date:2018-03-16 02:36 Export PDF Favorites Scan
  • Cluster Ensemble Algorithm Based on Dual Neural Gas Applied to Cancer Gene Expression Profiles

    The microarray technology used in biological and medical research provides a new idea for the diagnosis and treatment of cancer. To find different types of cancer and to classify the cancer samples accurately, we propose a new cluster ensemble framework Dual Neural Gas Cluster Ensemble (DNGCE), which is based on neural gas algorithm, to discover the underlying structure of noisy cancer gene expression profiles. This framework DNGCE applies the neural gas algorithm to perform clustering not only on the sample dimension, but also on the attribute dimension. It also adopts the normalized cut algorithm to partition off the consensus matrix constructed from multiple clustering solutions. We obtained the final accurate results. Experiments on cancer gene expression profiles illustrated that the proposed approach could achieve good performance, as it outperforms the single clustering algorithms and most of the existing approaches in the process of clustering gene expression profiles.

    Release date:2021-06-24 10:16 Export PDF Favorites Scan
  • 内界膜剥除联合C3F8填充治疗伴后巩膜葡萄肿的高度近视黄斑裂孔视网膜脱离

    Release date:2016-10-21 09:40 Export PDF Favorites Scan
  • Preliminary access of efficacy of vitreoretinal surgeries without endotamponade for diabetic tractional retinal detachment

    Objective To evaluate the long-term results of vitreoretinal surgery without use of intraocular silicone oil or gas in patients with diabetic tractional retinal detachment (DTRD). Methods The clinical interventional caseseries study included 104 patients (112 eyes) with DTRD, who were consecutively treated by pars plana vitrectomy without use of intraocular silicone oil or gas. Among the eyes, there were 6 eyes with iris neovascularization (INV), 1 eye with neovascular glaucoma (NVG) and 50 eyes with macular retinal detachment. There were no preexisting retinal holes or breaks prior to surgery nor any iatrogenic retinal breaks developed during vitrectomy. Cataract removal combined with intraocular lens implant surgeries were performed on 15 eyes. Followup duration varied from 12 to 65 months (mean: 29 months). Results Subretinal fluid was completely absorbed within 2 months after surgery. In 107 eyes (95.54%), the retina reattached after surgery and remained attached till the end of followup period. Best corrected visual acuity (BCVA) improved in 79 eyes (70.53%), remained unchanged in 14 eyes (12.50%) and got worse in 19 eyes (16.79%). The BCVA improving rate was lower in the macular detached group (33 eyes/50 eyes, 66.00% Vs 46 eyes/62 eyes, 74.19%,chi;2=0.89, P=0.344). No obviously aggravated opacity of lens was observed after vitreoretinal surgeries in the eyes without cataract surgeries. Seven (6.25%) eyes showed INV (5 new onset eyes), and none of them developed into NVG. In multivariate logistic regression, factors associated with postoperative rubeosis iridis were pre-existing rubeosis iridis [adjusted odds ratio (OR)=10.2], low preoperative BCVA (OR=11.1) and low postoperative BCVA (OR=16.7). Conclusions Vitreoretinal surgery for DTRD may not necessarily be combined with silicone oilor gas tamponade if there are no preoperative or intraoperative retinal breaks, and only using irrigation fluid could access a good longterm prognosis result.

    Release date:2016-09-02 05:42 Export PDF Favorites Scan
  • 急性吸入性氯氰菊酯中毒13 例临床分析

    目的 通过分析氯氰菊酯吸入中毒的临床特点与救治经验, 比较与口服中毒的不同临床特点, 以加深对氯氰菊酯中毒的认识。方法 回顾性分析2012 年6 月群体性5% 高效氯氰菊酯可湿粉吸入中毒13 例患者的临床表现、影像学、实验室检查、治疗及转归。结果 除神经毒性及消化道损害之外, 氯氰菊酯吸入中毒患者中, 咽干( 61. 5% ) 、咳嗽咳痰( 61. 5% ) 、呼吸困难( 30. 8% ) 、胸闷( 23. 1% ) 等呼吸道症状明显。结论 氯氰菊酯吸入中毒可以造成明显的呼吸系统损害, 轻者表现为上呼吸道刺激症状或气管-支气管炎症表现。

    Release date:2016-09-13 03:50 Export PDF Favorites Scan
  • Application of Multi-slice Spiral CT in the Diagnosis of Gastrointestinal Perforation

    目的 探讨胃肠道穿孔的多层螺旋CT(MSCT)表现及诊断价值。 方法 收集2010年3月-2011年3月18例经手术证实为胃肠道穿孔患者的临床及MSCT资料,回顾性分析了胃肠道穿孔及穿孔部位的MSCT表现。 结果 18例患者中,MSCT明确诊断穿孔17例,对穿孔部位准确定位11例。其中术后诊断胃穿孔4例、十二指肠球部穿孔9例、小肠穿孔3例、结肠穿孔1例、阑尾穿孔1例。MSCT表现有腹腔游离气体,肠壁周围局限性积气、腹腔积液及肠袢积液、肠壁增厚、肠腔周围脂肪间隙密度增高(条纹征)。 结论 MS CT有利于显示腹腔游离气体、胃肠道穿孔部位及其肠壁周围的变化情况,对胃肠道穿孔术前的定性及定位诊断有较明显的优势 ,可为临床提供更多有价值的诊断信息。

    Release date:2016-09-07 02:34 Export PDF Favorites Scan
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