Longer Operative Time Results in a Higher Rate of Subsequent Periprosthetic Joint Infection in Patients Undergoing Primary Joint Arthroplasty

Background

Whether prolonged operative time is an independent risk factor for subsequent surgical site infection (SSI) and periprosthetic joint infection (PJI) following total joint arthroplasty (TJA) remains a clinically significant and underexplored issue. The aim of this study is to investigate the association between operative time and the risk of subsequent SSI and PJI in patients undergoing primary TJA.

Characterizing luminous efficiency functions for a simulated mesopic night driving task based on reaction time

The objective of this study is to test the luminous efficiency functions V(lambda), V'(lambda), V(10)(lambda) and their linear combinations on the basis of a data set gained from a simulated mesopic night-time driving experiment. Another aim is to provide 'real-world' data for the 'X framework' or 'linear combination model', and to find out its limits in a practical situation. Human performance was measured by the reaction time method. Results show that the single parameter of the linear combination of photopic and scotopic luminous efficiency functions can be determined analytically with little variation for a given mesopic background luminance level and a given visual target colour, but the computation leads to considerable deviations comparing all three target colours (red, green and blue) used in the experiment. The conclusion for the given experimental conditions is that the single parameter of the linear combination model has an increasing deviation for lower background luminance levels.     

重症颅脑损伤患者CT检查的护理

我院自 1997～ 2 0 0 1年以来 ,CT扫描诊断检查重症颅脑外伤 (GCS评分 3～ 8分 ) 16 4例 ,其中 16 1例平稳度过扫描期 ,3例因伤势严重在扫描过程中呼吸心跳停止 ,经抢救无效死亡。1　临床资料　　 16 4例重症颅脑损伤中 ,单纯颅内血肿 6 3例占 38% ;血肿伴脑挫裂伤 38例占 2 3%     

小脑出血的临床、CT及预后评估

目的探讨小脑出血的原因、临床特点、CT表现、治疗及预后情况。方法回顾分析32例患者的临床及CT影像资料。结果本病多见于60岁以上,以高血压动脉硬化为主要原因,以突发性眩晕、呕吐为发病的主要症状,头颅CT检查可确诊。预后与患者年龄、出血量、出血部位、意识状态等多种因素密切相关。结论CT扫描可及时准确诊断,避免误诊漏诊,临床上根据患者的综合情况采取不同的救治策略有助于提高疗效,改善预后。     

CT在老年人硬膜下血肿诊断中的作用

老年人硬膜下血肿(SDH)系指60岁以上高龄人的SDH而言。由于近年来各国人口老年化率上升,老年人颅脑损伤的比例也随着增高,老年SDH也相应增多[1]。这类病人的临床表     

碘对比剂在CT检查中的应用

我院自 1994年使用CT检查以来 ,需增强检查者的比例越来越高。增强检查确实提供了CT平扫不可替代的诊断信息 ,但是碘对比剂的副作用却令人担忧 ,因此 ,CT室的护理人员应认真做好对患者的筛选、敏试工作 ,严格掌握禁忌证 ,加强对副反应的预防性措施及意外抢救工作 ,合理使用对比剂 ,现将我院应用碘对比剂的方法介绍如下。1　严格掌握禁忌证严重的甲状腺功能亢进、失代偿性心肌功能不全者禁忌。妊娠及急性盆腔炎症时禁行子宫输卵管造影。2　认真筛选高危因素有碘造影剂过敏、严重肝肾功能损害、心脏和循环功能不全、肺气肿、体质极差者 ,重…     

When work strain transcends psychological boundaries: an inquiry into the relationship between time pressure,irritation, work–family conflict and psychosomatic complaints

Against the theoretical background of the effort–recovery model and the action regulation theory, the author presents a cross‐sectional questionnaire study testing hypotheses about the relationship between work‐related time pressure, cognitive and emotional irritation, work–family conflict and psychosomatic complaints. Subjects were 576 female home care nurses. Results of a path analysis show that the relation of time pressure and psychosomatic complaints is partially mediated by experiencing a work–family conflict; also the relation of time pressure and work–family conflict is partially mediated by cognitive and emotional irritation. It is argued that cognitive and emotional irritation are fruitful concepts for a more comprehensive understanding of the relationship between work stressors and the development of strain‐based work–family conflict. Implications for the prevention of work–family conflict are outlined. Copyright © 2008 John Wiley & Sons, Ltd.     

初次献血对红细胞膜Na+-K+-ATP酶活性的影响

目的探讨初次献血对红细胞膜Na+-K+-ATP酶活性的影响.方法应用比色法分别检测50例符合献血条件的健康初次献血者献血前后的红细胞膜Na+-K+-ATP酶活性,并对结果进行分析.结果初次献血者献血前后红细胞膜Na+-K+-ATP酶活性分别为3.121±0.441和2.907±0.397 μmol.Pi/107 RBC.h,两者比较无明显差异(P＞0.05).结论初次献血对红细胞膜Na+-K+-ATP酶活性无影响,献血不会造成红细胞功能损伤.     

脊柱爆裂型骨折的CT扫描价值分析

目的:探讨脊柱爆裂型骨折的CT扫描价值. 资料与方法:随机抽取我院1988年至2001年骨科70例脊柱外伤患者的资料.其中男性54例,女性16例.年龄19岁～73岁,平均49岁.全部患者均摄取普通X线片,然后依据X线片提示的骨折部位作CT扫描,采用估算法重建图像,应用骨窗和软组织窗观察,部分病例进行矢状面重组.结果:70例受检者中受损椎体87个,C5损伤1例,T12～L1损伤1例,L1～2损伤1例,其他均为单椎体损伤.按Denis[1]三柱理论,63例病例为爆裂骨折,累及二柱和二柱以上,7例为椎体单纯压缩型骨折,1例伴有严重的脱位.结论:CT在显示椎体骨折尤其是脊柱后结构损伤方面优于X线平片,对判定脊柱稳定程度及损伤有否手术指征帮助最大.当X线摄片之后考虑为爆裂性骨折时,应抓紧作CT扫描检查.