Effects of intravenous L-acetylcarnitine on retinal oscillatory potentials

L-acetylcarnitine is a compound with cholinergic properties and putative action on the visual system and the glucose metabolism. Ten healthy, emmertropic volunteers (age range: 21 to 28 years) were studied. Each subject was administered 5, 10, and 30 mg/kg acute intravenous doses of L-acetylcarnitine and matching placebo. Retinal oscillatory potentials to full-field flash stimulation were recorded before and 30, 60, and 120 min after administration. A systematic reduction of the implicit time of the P2 and N2 oscillatory potential components was observed after administration of the 10 and 30 mg/kg doses: significant changes were not evident at the 5 mg dose or after placebo. The latency reduction was significantly correlated with the postdrug increment of the L-acetylcarnitine plasma concentration. No other systematic modification in latency of amplitude was observed.The results were presented in part at the XXV I.S.C.E.V. Symposium, Sarasota (Florida), April 26–30, 1987.     

Correlation with age and sex of flash-evoked electroretinogram and retinal oscillatory potentials recorded with skin electrodes

Electroretinograms and retinal oscillatory potentials to full-field flash stimulation were recorded by dermal electrodes in a population of subjects (1 to 84 yrs) balanced for age and sex (119 females, 133 males), without evidence or history of ocular and/or relevant systemic diseases. The electroretinogram latencies and b-wave amplitude increased, while the a-wave amplitude decreased linearly with age. The oscillatory potential amplitude initially increased, to decrease approximately at the age of 50, with an inverted U-shaped distribution.Presented in part at the XXV ISCEV Symposium, Sarasota (Florida), April 26–30, 1987.     

电针加火罐治疗面神经麻痹的研究

目的　观察电针加火罐治疗面神经麻痹的效果。方法　选择面神经麻痹患者 4 0例 ,随机分为治疗组 2 0例 ,予以电针加火罐治疗 ;对照组 2 0例口服祛风药或维生素B族药物治疗 ,并进行疗效比较。结果　经过 4周治疗 ,治疗组总有效率为 95 % ,对照组总有效率为 75 % ,两组相比有非常显著性差异。结论　电针加火罐治疗面神经麻痹疗效显著 ,且无任何副作用     

刺络闪火法治疗腰棘间韧带损伤

作者自1986年5月以来应用刺络闪火法治疗腰棘间韧带损伤取得满意效果。该法融按摩、刺络、闪火及复位于一体。结果表明该法不仅能消除棘间韧带的水肿,而且较好地调整损伤节段腰椎珠应和结构,从根本上促进损伤韧带的修复。     

用Flash动态演示PN结的形成过程

本文通过用Flash 5．0制作《医学电子学》中PN结的形成过程的介绍，在熟悉Flash 5．0制作方法的同时．完成相应的多媒体教学。     

走罐法为主治疗肩周炎临床观察

目的　观察走罐法结合关节松动术治疗肩周炎的疗效。方法　将 80例肩周炎患者随机分为 A组、B组 ,A组采用活血通络介质走罐法结合关节松动术 ,并嘱患者进行功能锻炼 ,B组仅施以关节松动术并配合功能锻炼。结果与结论　两组患者肩关节活动范围都增大 ,A组治愈率为 6 7.5 % ,B组为 4 2 .5 % ,两组疗效经 χ2检验 ,P<0 .0 5 ,表明走罐法结合关节松动术治疗肩周炎疗效优于单纯关节松动术。     

多普勒超声血流仪测量血流速机理的模拟设计

利用VB编程技巧和fkasg动画制作技术．形象展示多普勒超声血流仪测量血管中血细胞流速的物理机理。