英语语言训练在减轻精神分裂症患者精神残疾中的作用

目的探讨英语语言训练在减轻精神分裂症患者精神残疾中的作用。方法采用随机方法抽取我院62例精神分裂症患者,研究组32例,对照组30例。采用《住院护士观察量表》进行评定。研究组患者进行初级英语的听、读、说、写的教授和训练,每次30分钟,每天上午、下午各1次,时间6个月。结果训练后研究组积极因素较对照组显著增加(88.53±7.30 vs 83.19±6.78,P0.01);消极因素显著减少(9.53±3.88 vs 12.50±4.82,P0.05)。结论精神分裂症患者进行英语语言训练,对减轻精神残疾有较好的效果。     

Enhanced stretch reflex excitability of the soleus muscle in experienced swimmers

The purpose of this study was to investigate effects of long-term participation to swimming on adaptations of spinal reflex excitability. To this end, mechanically induced stretch reflex (SR) and electrically induced Hoffmann (H-) reflex of the soleus muscle were investigated between swimmers with experience of more than 10 years and non-trained individuals while sitting at rest. The amplitude and the gain (stretch velocity vs. amplitude of the reflex response) of the SR were significantly greater in the swimming group than in the non-trained control group. Similarly, the responses of the H-reflex were also significantly greater in the swimming group than in the non-trained control group. Results of this study demonstrated that the spinal reflex excitability in experienced swimmers was far more enhanced than in non-trained individuals.     

Active Control and Its Stress Effects

The effects of 5-fold injections of normal saline were studied in Wistar rats in two conditioned reflex situations: defense and alimentary. Intact animals developed conditioned pain avoidance reflex in repeated tail-flick test after 60 presentations over 3 days. Two injections of normal saline were sufficient for the formation of a stable negative stress status in experimental rats, which manifested by a drastic increase in tactile sensitivity persisting for 5 days after discontinuation of injections. Only 15% experimental rats vs. 40% intact animals developed the food-procuring response in a multialternative maze. Presumably, repeated injections of normal saline should be regarded as a potent negative stress factor modulating animals behavior, and these signs should be taken into consideration, when interpreting the effects observed in pharmacological investigations.     

应用咽部冷刺激法于老年吞咽障碍康复训练的观察及护理

吞咽障碍是老年患者的临床常见症状,吞咽障碍可造成水和其它营养成分摄入不足,进食易出现误吸致吸入性肺炎及各种并发症甚至死亡。胃管鼻饲虽然能解决进食问题,但患者往往难以接受,另外,如长期留置鼻饲管不仅可造成鼻、咽、食管黏膜溃疡及出血等多种并发症[1],不利于吞咽功能的     

发展我国临床专科护理师需要研究解决的问题

针对我国临床专科护理师（CNS）培养初步阶段出现的问题．提出确定CNS名称和培养目标的迫切性，CNS研究生层次培养的可行性。明确CNS角色定位和职能作用的必要性，以及CNS管理模式的紧迫性。     

退行性膝关节骨关节病患者的骨强度与骨密度的相关性研究

目的退行性膝关节骨关节病患者的骨强度与骨密度的相关性。方法组和对照组的患者均进行胫骨超声速率(SOS)和髋部骨密度(BMD)的测定。依据髋部BMD,再将研究组分为单纯退行性膝关节骨关节病组和合并骨质疏松症组。结果组和研究组的胫骨SOS和髋部BMD呈正相关,对照组的胫骨SOS和髋部BMD相关系数显著地高于研究组的相关系数,单纯组的相关系数没有显著性意义。结论退行性骨关节病患者的骨强度与骨密度呈正相关,但相关性较低,所以胫骨超声速率(SOS)测定仅能反映骨强度的情况,不能反映骨密度的情况。     

不同粘接剂对烤瓷瓷面与金属托槽间剪切强度影响的体外研究

目的 研究不同粘接剂对烤瓷瓷面与金属托槽间剪切强度的影响.方法 40个烤瓷瓷面经打磨、氢氟酸酸蚀、冲洗干燥、硅烷偶联剂处理瓷面后,再根据使用粘接剂的不同分为A组:光固化复合树脂粘接剂、B组:单组份化学固化复合树脂粘接剂、C组:树脂改良型光固化玻璃离子粘接剂、D组:双组份化学固化复合树脂粘接剂.将40个金属托槽粘接于烤瓷瓷面,经水浴孵化24 h后测得样本剪切强度,并进行统计分析.结果 A组剪切强度大于其他组(P＜0.05),C组剪切强度小于B组(P＜0.05),D组与B、C组剪切强度差异无统计学意义(P＞0.05).结论 光固化复合树脂粘接剂可获得最大的剪切强度,树脂改良型光固化玻璃离子粘接剂对金属托槽与烤瓷瓷面的粘接效果欠佳.     

浓硫酸酸蚀聚醚酮酮的时间对其与牙本质剪切粘接强度的影响

目的研究浓硫酸酸蚀聚醚酮酮(polyether?ketone?ketone,PEKK)不同时间对其与牙本质剪切粘接强度的影响,为临床使用PEKK修复体的粘接操作提供科学依据。方法制备PEKK试件44个,随机平均分为A、B、C、D 4组:A组为对照组,仅用水磨砂纸打磨;B组、C组、D组为实验组,分别用98%浓硫酸酸蚀经打磨试件表面5 s、30 s、60 s。另外,每组随机抽取1个试件用慢速切割机制备出剖面,在扫描电镜下观察其剖面的表面形貌。4组试件与牙本质通过树脂粘接后在37℃蒸馏水浸泡24 h,测量剪切粘接强度后统计分析,通过扫描电子显微镜与体视显微镜检查试件断裂界面,统计粘接失败类型。结果B组PEKK试件酸蚀处理后剖面呈海绵状且孔隙大小均匀,C组、D组可见试件剖面有破坏状孔蚀样结构;剪切粘接强度B组(16.84±1.84)MPa、C组(12.33±1.22)MPa和D组(6.44±1.18)MPa均大于A组(3.99±1.06)MPa(P<0.05),其中B组与牙本质的剪切粘接强度最高(16.84±1.84)MPa。结论采用98%浓硫酸酸蚀PEKK表面5 s处理方法可以使PEKK与牙本质获得较好的剪切粘接强度。     

纳米Si3N4织布增强义齿基托机械性能的研究

目的研究纳米Si3N4纤维织布作为加强体对PMMA机械性能的影响。方法将预处理的纳米Si3N4纤维织布,经室温固化和加热固化制样各成三组Si3N4织布/PMMA复合试件,厚度分别为1.0 mm,1.5mm,2.0 mm。未添加织布的为对照组,通过万能试验机测定并比较分析不同厚度的织布增强树脂基托的挠曲强度和杨氏弹性模量。结果无论是常温固化还是加热固化条件下,添加织布的复合材料厚度为2.0mm时,其挠曲强度和弹性模量达到最大,机械性能达到最佳,与对照组相比差异具有统计学意义(P<0.01);相比于室温固化条件,纳米Si3N4纤维织布增强基托树脂机械性能的提高在加热固化条件下更易实现。结论合理添加纳米Si3N4纤维织布形成合适厚度的基托复合体材料,其挠曲强度和弹性模量可以得到大幅提高,当复合材料厚度为2.0mm,其机械性能达到最佳,尤以加热固化条件下明显。