螺旋CT的预防性维修

尽早发现故障苗头,并将故障消灭于萌芽状态,是预防性维修的目的,是维修工作的最高境界,具体工作包括定期保养,定期检查,随即处置隐患,根据从业多年经验小结了一些针对螺旋CT的预防性维修感受。     

Ultrasound Examination and Localization of the Sciatic Nerve: A Volunteer Study

Background: Few studies have examined the use of ultrasound for sciatic nerve localization. The authors evaluated the usefulness of low-frequency ultrasound in identifying the sciatic nerve at three locations in the lower extremity and in guiding needle advancement to target before nerve stimulation.

Methods: In this prospective observational study, 15 volunteers underwent sciatic nerve examination using a curved ultrasound probe in the range of 2-5 MHz and a Philips-ATL 5000 unit (ATL Ultrasound, Bothell, WA) in the gluteal, infragluteal, and proximal thigh regions. Thereafter, an insulated block needle was advanced inline with the ultrasound beam to reach the nerve target, which was further confirmed by electrical stimulation. The quality of sciatic nerve images, ease of needle to nerve contact, threshold stimulating current, and resultant motor response were recorded.

Results: The sciatic nerve was successfully identified in the transverse view as a solitary predominantly hyperechoic structure on ultrasound in all of the three regions examined. The target nerve was visualized easily in 87% and localized within two needle attempts in all patients. Nerve stimulation was successful in 100% after two attempts with a threshold current of 0.42 +/- 0.12 (mean +/- SD) eliciting foot plantarflexion or dorsiflexion.     

心房颤动的导管消融治疗

心房颤动(简称“房颤”)是心血管疾病中无论在控制症状方面还是改善预后方面均不理想的病种。房颤的导管消融作为一种新的治疗手段,从10年前诞生之日起就引发了房颤治疗的革命,近2年来,越来越多的国内外医学中心已将其作为房颤的常规治疗。本文就现阶段如何选择房颤导管消融治疗的适应证作简要评价。1目前的方法简介由于迄今的资料充分证实房颤的起源90%以上位于肺静脉及其与左房后壁的过渡区域(肺静脉前庭),导管根治房颤的方法也就集中在将该区域与左房之间的电学传导阻断。目前的主流方法是在三维标测系统CARTO或NavX指导下行肺静脉隔…     

谷氨酰胺在危重病患者中的应用

目的探讨危重病患者中早期经静脉应用谷氨酰胺（glutamine，Gl）的临床价值。方法42例患者随机分成两组（对照组和Gln组），Gln组进行Gln治疗（100mL／d，共7d）。治疗前后检测患者体质量、白蛋白、谷胱甘肽（GSH）、握力的变化和肠功能不全的发生率。结果体质量两组治疗前后比较差异无显著性（P〉0．05）。白蛋白、握力和GSH Gl治疗后非常显著高于治疗前（P〈0．01）；白蛋白对照组治疗后较治疗前显著增高（P〈0．05），但握力和GSH治疗前后均无显著变化（P〉0.05）；肠功能不全的发生率Gln组为4．8％，显著低于对照组（28．6％，P〈0．05）。结论在危重病患者疾病早期通过静脉途径外源性地补充Gln，有效改善了患者的营养状况；使患者血浆中的GSH水平增高，加强了机体的抗氧化能力；减少了患者肠功能不全的发生率。     

19例胰十二指肠损伤的诊治体会

1994-2004年我院共收治腹部闭合性损伤324例，其中经手术证实为胰十二指肠损伤18例，占5．5％，他院转入1例，共19例，死亡2例，病死率10％，现将我们的诊治体会介绍如下。     

《新方八阵》补真阴与补真阳用药关联性研究

用方剂计量学研究中的关联性分析法对《新方八阵》中补真阴、补真阳药物的应用与其他医家进行比较，印证了景岳重视阴中求阳、阳中求阴的思想，为方剂比较研究中关联指数与关联性分析的具体化内容之一。     

Pick’s disease with Pick bodies combined with progressive supranuclear palsy without tuft‐shaped astrocytes: A clinical,neuroradiologic and pathological study of an autopsied case

We report clinical, neuroradiologic features, and neuropathologic findings of a 76‐year‐old man with coexistent Pick’s disease and progressive supranuclear palsy. The patient presented with loss of recent memory, abnormal behavior and change in personality at the age of 60. The symptoms were progressive. Three years later, repetitive or compulsive behavior became prominent. About 9 years after onset, he had difficulty moving and became bed‐ridden because of a fracture of his left leg. His condition gradually deteriorated and he developed mutism and became vegetative. The patient died from pneumonia 16 years after the onset of symptoms. Serial MRI scans showed progressive cortex atrophy, especially in the bilateral frontal and temporal lobes. Macroscopic inspection showed severe atrophy of the whole brain, including cerebrum, brainstem and cerebellum. Microscopic observations showed extensive superficial spongiosis and severe neuronal loss with gliosis in the second and third cortical layers in the frontal, temporal and parietal cortex. There were Pick cells and argyrophilic Pick bodies, which were tau‐ and ubiquitin‐positive in neurons of layers II–III of the above‐mentioned cortex. Numerous argyrophilic Pick bodies were observed in the hippocampus, especially in the dentate fascia. In addition, moderate to severe loss of neurons was found with gliosis and a lot of Gallyas/tau‐positive globus neurofibrillary tangles in the caudate nucleus, globus pallidus, thalamus, substantia nigra, locus coeruleus and dentate nucleus. Numerous thorned‐astrocytes and coiled bodies but no‐tuft shaped astrocytes were noted in the basal ganglion, brainstem and cerebellar white matter. In conclusion, these histopathological features were compatible with classical Pick’s disease and coexistence with progressive supranuclear palsy without tuft‐shaped astrocytes.     

伴有LADD综合征的角膜缘干细胞缺乏

泪管-耳-牙-指（趾）（LADD）综合征是一种具有多种表现的常染色体显性遗传疾病。最初在1967年由Levy报道。1例双侧泪液系统缺失、杯状耳、干嘴，以及牙、手臂和指（趾）异常的单发病例。之后一些新发现的临床表现，如肾脏异常、唾液腺缺乏、先天性髋脱位、先天性裂孔疝和横膈疝、感觉性耳聋和传导性耳聋、牙发育不全、四肢异常、口腔干燥和眼干都被报道与此综合征有关。     

妊娠期糖尿病62例临床分析

目的 探讨妊娠期糖尿病的合理处理及预后.方法 选择62例妊娠期糖尿病患者进行回顾性分析.结果 妊娠期糖尿病62例,其中单纯饮食控制17例,饮食控制 胰岛素治疗43例,2例未治疗.剖宫产42例,阴道产20例.合并妊高症3例,羊水过多2例,羊水过少4例,羊水栓塞1例,早产5例,高胆红素血症3例,真性红细胞增多症2例,死胎2例,新生儿窒息4例,新生儿畸形1例.结论 对妊娠合并糖尿病的孕妇进行早期的诊断及治疗,选择合适的时间及方式终止妊娠可以减少母儿并发症的发生率.     

内镜辅助方型脸改型术

目的探讨内镜在方型脸改型术中的临床应用效果。方法采用口内入路，在内镜辅助下，用高速涡轮气钻截除肥大下颌角、切除部分咬肌和颊脂垫，进行方型脸的面部改型。结果本组共38例，其中男3例，女35例，年龄21～40岁。内镜完全可以清楚显示下颌升支、下颌角、下颌体下缘，视野清晰。使用高速涡轮气钻截除肥大下颌角可以更加精确和容易，且创伤小，出血少，手术时间短，感染风险低。下面部轮廓改善满意。结论内镜辅助方型脸改型术，有助于获得良好的手术效果。