The use of cluster analysis to identify different burnout profiles among nurses and care assistants for older adults

The twofold purpose of this study was to identify specific burnout patterns among nurses and care assistants for older people, and to determine whether these profiles differ according to socioprofessional variables.A sample of 279 healthcare professionals completed an online survey comprising the Maslach Burnout Inventory and socioprofessional items. Cluster analysis identified five profiles on a burnout-engagement continuum. Participants with the Engaged profile had low scores on all three burnout dimensions (p < .001), while those with the Burnout profile had high scores on all three dimensions (p < .001). Three intermediate profiles were described. The Disconnected profile was characterized by higher depersonalization (p < .001), the Overextended profile by high emotion exhaustion (p < .001), and the Ineffective profile by low personal accomplishment (p < .001). Less experienced professional caregivers were more prone to burnout in terms of depersonalization (p < .01), while more experienced professional caregivers tended to have an ineffective burnout profile (p < .01). Identifying profiles of burnout symptoms can help to develop personalized interventions.     

直流电场对培养兔角膜上皮细胞形态及活力的影响

目的:观察直流电场对体外培养兔角膜上皮细胞形态及活力的影响。方法:采用组织块培养法培养兔角膜上皮细胞并进行传代培养,将第4代角膜上皮细胞置于强度为8 V/cm的直流电场中暴露4 h,停止电场作用后继续培养12 h;未置于电场中的角膜上皮细胞作为对照。显微成像系统观察细胞形态改变,各时间点培养的细胞行台盼蓝染色计数,比较各组活细胞率。结果:直流电场作用后大部分角膜上皮细胞变长,并垂直于场线方向排列,停止电场暴露后,大多数细胞恢复正常形态及分布。实验组和对照组活细胞率差异无统计学意义(P>0.05)。结论:短时间直流电场作用对培养的兔角膜上皮细胞的形态及活力无明显影响。     

低酶学水平的慢性HBV感染者肝组织学改变与CD28表达的相关性研究

目的研究低酶学水平(ALT≤3ulm)的慢性HBV感染者肝组织学改变及CD28的表达水平,探讨CD28与肝组织学变化及血清酶学(ALT)变化的相关性,为临床处理该类人群提供参考。方法①病例筛选:选取低酶学水平(ALT≤3ulm)、HBV-DNA定量≥103copies/ml的慢性乙肝病毒(HBV)感染病例71例行肝穿肝组织学检测;②肝组织病理检测:采用HE染色检测肝组织的炎症活动度和肝纤维化程度;③免疫组化:SP法检测肝组织中CD28的表达,在高倍镜下观察阳性细胞的表达,采用Image-ProPlus6.0彩色图像分析系统对图象进行分析。用积分光密度值(IOD值)表示其在肝组织中表达的强度。结果①病理学检查情况:71例患者中,肝组织学完全正常(G0S0)者3例(4.23%),肝组织学存在不同程度损害者68例(95.77%),其中早期肝硬化3例(4.23%)。②CD28表达:在所有检测的肝组织中均有表达,主要集中在胞浆中。在不同炎症活动度和纤维化程度的肝组织中,所测得阳性细胞的积分光密度值比较差异有统计学意义(P<0.05)。③ALT水平与CD28表达的关系:CD28表达在不同ALT分组间差异有统计学意义(P<0.05)。结论肝组织中CD28的表达与肝组织炎症活动及纤维化进程有密切联系。     

Bibrachial amyotrophy and ventral spinal cyst associated with myelomalacia and intracranial hypertension

It has been recently recognised that patients with ventral intraspinal fluid collections secondary to cerebrospinal fluid leaks can present with bibrachial amyotrophy or mimic Hirayama disease. Here we present two further patients that expand the clinical spectrum of this disorder to include association with myelomalacia and intracranial hypertension.