Clinical investigation of surgery for intermittent exotropia

Objective: To investigate the time and postoperative binocular vision of strabismus surgery for children with intermittent exotropia (X (T)). Methods: A retrospective investigation was conducted in 80 child patients with intermittent exotropia. Pre- and postoperative angles of deviation fixating at near (33cm) and distant targets (6m) were measured with the prolonged alternate cover testing. The binocular function was assessed with synoptophore. Twenty-one patients took the postoperative synoptophore exercise. Results: (1) A week after surgery, 96.2% of the 80 patients had binocular normotopia, while a year after surgery, 91.3% of the 80 patients had binocular normotopia; (2) Preoperatively, 58 patients had near stereoacuity, while postoperatively, 72 patients achieved near stereoacuity (P<0.05); (3) Preoperatively, 64 patients had Grade I for the synoptophore evaluation and postoperatively, 76 patients achieved Grade I. Meanwhile, 55 patients had Grade Ⅱpreoperatively and 72 achieved Grade Ⅱ postoperatively. For Grade Ⅲ, there were 49 patients preoperatively and 64 patients postoperatively (P<0.05); (4) Patients of 5～8 years old had a significantly better recovery rate of binocular vision than those of 9～18 years old (P<0.05); (5)Patients taking postoperative synoptophore exercise had a better binocular vision than those taking no exercise (P<0.05). Conclusions: (1) Strabismus surgery can help to preserve or restore the binocular vision for intermittent exotropia; (2) Receiving the surgery at young ages may develop better postoperative binocular vision; (3) The postoperative synoptophore exercise can help to restore the binocular vision.     

肿瘤肝胆外科研究生教学查房的多种方法联合

基于传统教学查房进行的医学研究生临床教育存在部分弊端,我们尝试通过多种方式联合,在我院肿瘤肝胆外科研究生中获得了更好的教学效果。     

咪达唑仑预防腰-硬联合麻醉妇科手术后恶心呕吐的随机双盲研究

目的观察咪达唑仑预防腰-硬联合麻醉下妇科手术后恶心呕吐的效果。方法腰-硬联合麻醉妇科手术患者90例,随机分为M（咪达唑仑）组、G（格拉斯琼）组和NS组,手术结束时分别静注咪迭唑仑2mg,格拉斯琼3rag和生理盐水3ml,10min后开始硬膜外自控镇痛（PCEA）,观察病人术后24h内恶心呕吐和镇静情况。结果NS组患者恶心呕吐总发生率（56．7％）显著高于其他两组（P〈0．01）,M组（32．3％）和G组（24．1％）差异无统计学意义（P〉0．05）。术后2h时M组镇静程度高于C组和NS组（P〈0．05）,但Ramsay评分均未超过3分;4h时3组病人镇静程度相近。结论腰-硬联合麻醉下行妇科手术的病人手术结束时静脉注射咪达唑仑2mg可以有效预防术后恶心呕吐,其效果和格拉斯琼3mg相似,且未表现出明显的镇静作用。     

虚拟手术实验在医学教学领域中的应用

为解决临床医学学生培训问题,我院构建了虚拟手术实验网络教学系统,它与真实手术相结合共同构成了较完整的实验教学体系,满足了医学教育实验教学发展的需要。系统的交互性和快速响应提高了教学效率和教师的教学科研能力,也有利于学生能动性的发挥。     

虚拟微创手术培训系统几何建模的研究

在虚拟微创手术的模型设计中，采用3DS MAX建立人体器官几何模型并保存为ASE文件格式，用Pro/E建立手术器械几何模型并保存为STL文件格式，并导入OpenGL.采用面模型在OpenGL中重建模型，并用纹理映射和明暗处理对模型进行渲染。