产前超声横断面连续扫查三血管气管上多切面诊断胎儿心血管异常

目的 探讨产前超声横断面连续扫查三血管气管上多切面诊断胎儿心血管异常的价值。方法 采用横断面连续扫查三血管气管上多切面方法,观察502胎正常胎儿和521胎异常胎儿的三血管气管上多切面声像图特点。结果 由三血管气管切面开始向胎儿头侧移动探头,依次获得三血管气管切面;头臂静脉切面可显示头臂静脉、主动脉横弓;头臂动脉起始段切面可显示头臂动脉、左颈总动脉、左锁骨下动脉起始段横断面;双侧锁骨下动静脉切面可显示双侧锁骨下动脉及双侧锁骨下静脉长轴、双侧颈总动脉起始段横断面。502胎正常胎儿三血管气管上多切面均可通过连续扫查获得显示。521胎异常胎儿中,三血管气管上多切面扫查检出头臂静脉异常236胎,头臂动脉异常277胎,心上型肺静脉异位引流7胎,颈位主动脉弓1胎。结论 三血管气管上多切面连续扫查有助于产前超声诊断胎儿心血管异常。     

兔颅脑棍棒打击伤模型的建立及实验条件探讨

目的建立用于模拟法医棍棒打击致颅脑损伤的动物模型。方法在BIM-II型生物撞击机的基础上自行设计铁质棍棒,将24只新西兰大白兔分为对照组、轻伤组与重伤组,致伤后6h进行解剖,观察损伤形态,并取材做常规病理,行CT及脑组织含水量检查。结果致伤组均出现不同程度的神经系统阳性体征,6h内轻伤组死亡率1／10,重伤组6／10,形态学及CT改变主要表现为不同程度的头皮血肿、颅骨骨折、硬膜外血肿、硬膜下血肿、蛛网膜下腔出血及脑损伤。各组之间脑含水量差异有统计学意义。结论在严格控制实验参数的情况下,该动物模型重复性好,实验结果稳定,能够较好地模拟法医检案中铁棒损伤形态,可用于法医学中颅脑钝性损伤机制的实验研究。     

Epiretinal prosthesis forouter retinal degenerative diseases

Age-related macular degeneration (AMD) and retinitis Pigmentosa (RP) are commonouter retinal degenerative Problems, and alsothe Predominant causesof most blinding retinal diseases. Retinal Prosthesis is a Promising solution for such PhotorecePtor degeneration diseases. Mostof current concePts for a retinal Prosthesis are basedon neuronal electrical stimulation. Inthe Pasttwenty years, retinal Prosthesis has been develoPed intwo different directions: ePiretinal Prosthesis and subretinal Prosthesis. Each Prosthesistechnique has its advantages and disadvantages. For ePiretinal Prosthesis, it is easierto be imPlanted and hasthe advantageof keePing mostofthe electronics inthe vitreous cavityoffthe retinal surface, which greatly helPs in dissiPatingthe heat generated bythe imPlant device. Inthis PaPer, a briefoverviewof retinal Prostheses concePts is introduced. Afterthat, several imPortant asPectsof ePiretinal electrical stimulation will be discussed. Moreover, some Practical ePiretinal Prosthesis devices develoPed by researchers in United States, Germany and JaPan inthe Past have been reviewed. We hoPethatthe devices will be used widely inthe near future.     

动态浊度法测定注射用还原型谷胱甘肽的细菌内毒素含量

目的应用动态浊度法定量测定注射用还原型谷胱甘肽中细菌内毒素的含量。方法通过干扰试验确定样品检测浓度，建立标准曲线并对样品进行细菌内毒素的定量检测。结果注射用还原型谷胱甘肽稀释至质量浓度为1mg／mL时，对鲎试剂检查无干扰作用，细菌内毒素的回收率均在50％～200％范围内。结论用动态浊度法测定注射用还原型谷胱甘肽中的细菌内毒素含量，方法可行。     

181例新住院精神患者自杀未遂分析

目的 了解我院新住院精神患者的自杀行为,为加强对自杀行为者的防范提供理论依据,减少非正常死亡.方法 用自制自杀未遂统计表逐项填写临床资料,并用CCMD-3诊断标准进行回顾性诊断.结果 1991～2005年共新收住院精神患者2 100例,其中自杀未遂181例,占新住院患者的8.26%.诊断抑郁症112例,精神分裂症60例,急性应激障碍5例,其他4例.χ2=15.09,P＜0.01.自杀方式不一,以服药(毒),跳楼(崖),投水为多.结论 抑郁症是自杀的主要原因.女性比男性自杀行为多.     

通心络胶囊治疗冠心病心绞痛临床观察

目的观察通心络胶囊治疗冠心病心绞痛的临床效果。方法将86例冠心病心绞痛患者随机分为两组,均服用消心痛,治疗组加服通心络胶囊。结果治疗组症状疗效和心电图疗效明显优于对照组,其血脂改善亦优于对照组。结论通心络胶囊治疗冠心病心绞痛的疗效确切。     

Effect of topical application of black pepper essential oil on peripheral intravenous catheter insertion: A randomized controlled study

ObjectiveThe literature describes many techniques to increase vein visibility and palpability that facilitate peripheral intravenous catheter insertion. However, there is only one study examining the effect of topical essential black pepper oil on veins. We aimed to determine the effects of topical application of black pepper essential oil on peripheral intravenous catheter insertion success.MethodsThis randomized controlled trial was carried out on 60 patients randomly assigned to either the experimental group (n=30) or the control group (n=30) reporting to the endoscopy unit of the clinic between May 2019 and October 2019. The study results were evaluated using an information form, a catheter insertion form, and a visual analog scale (VAS). In the experimental group, black pepper essential oil was used to increase vein degree before the procedure, while in the control group, no extra interventions were applied. The time taken in determining an appropriate vein, time taken for successful catheter insertion, and the patient's and nurse's satisfaction after the process were recorded.ResultsSignificant improvements in vein degree were detected after the experimental group's oil application (p₁<0.001). The period of appropriate vein selection and successful catheter insertion showed a statistically significant decrease in the experimental group (p<0.05). The satisfaction levels of patients and nurses in the control group were significantly lower than those of the patients from the experimental group (p<0.05).ConclusionTopical black pepper oil application can increase the vein degree and the success of the procedure.     

The effect of Tai Chi on functional mobility,balance and falls in Parkinson's disease: A systematic review and meta-analysis of systematic reviews

BackgroundThe aim of the study was to evaluate the effect of Tai Chi on functional mobility, balance and falls in Parkinson's disease.Materials and methodsA comprehensive literature search was conducted to identify the systematic reviews and meta-analyses up to the end of October 2021. 601 studies were identified, and 16 of them were included in our study.ResultsAccording to our meta-analysis; there was a significant effect of Tai Chi on balance (SMD, ?0.777 95% CI ?0.921 to -0.633; p = 0.000), functional mobility (SMD, ?0.719 95% CI ?0.944 to -0.494; p = 0.000), and falls (SMD, ?0.456 95% CI ?0.668 to -0.245; p = 0.000) in PD.ConclusionOur systematic review and meta-analysis found significant effects of Tai Chi on functional mobility, balance and falls in patients with PD.     

氢化物发生-原子荧光法测定三七、三七三醇皂苷及其制剂中的砷

目的:研究三七、三七三醇皂苷(PTS)及其制剂三七通舒胶囊中的重金属砷(As)的检测方法及含量。方法:采用微波消解-氢化物发生-原子荧光法进行测定As,系统地研究微波消解、氢化物发生的最佳条件。结果:荧光强度与进样浓度之间呈良好的线性关系,线性范围0～12μg.L-1,回收率为88.37%～104.76%,检出限0.109 6μg.L-1,RSD为0.82%,PTS及其制剂中As含量较低。结论:该方法具有简便、快速、灵敏度高等优点,适用于三七、PTS及其制剂中As的测定。     

不同接种方式对组织工程牙龈种子细胞黏附效果的影响

背景：如何在体外将支架材料和种子细胞高效地复合以构建组织工程牙周组织是目前牙周病治疗及牙周缺损修复研究的重要方向。 目的：比较传统沉淀接种法和胶原包裹接种法的细胞黏附状况,优化细胞接种方式。 方法：将一定浓度的犬牙龈成纤维细胞,分别采用传统沉淀接种法和胶原包裹接种法接种到聚乳酸-壳聚糖-明胶梯度孔径和均匀孔径支架上,通过细胞计数测定支架上贴附的细胞数量,计算其接种率,并进行对比分析。 结果与结论：采用胶原凝胶包裹接种法将细胞接种至均匀孔径支架和梯度孔径支架上,其接种率均明显高于传统的沉淀接种法（P〈0.01）。用胶原凝胶包裹种子细胞行细胞接种可以有效提高种子细胞的接种率,增加支架上的细胞初始浓度,可以选用胶原凝胶包裹细胞接种方式用于牙龈工程组织构建。