Des sites à voir et à entendre : les abris à motifs schématiques de la falaise de Baume Brune (Vaucluse)

In the North of the plain drained by Calavon and at the foot of the mounts of Vaucluse, the cliff of Baume Brune is long about 900 m. We count 43 natural shelters of which only 10 are marked by painted figures belonging to the schematic iconography of the Neolithic period. The painted shelters are chosen, according among others, to four criteria, which are their dominant visual position, their southern exposure, the “red” tint of their walls and their episodic humidity. While a selection of these criteria might be present in the non-decorated shelters of Baume Brune, all of them are always found in the painted shelters. Yet, sometimes their presence if not so obvious, as there are shelters once painted in red tint whose walls are now covered by small carbonate flowstones formed by the flow of water after centuries of rain events. We also propose that iconography was perceived as a factor contributing to the placement of rock art, for single shelters were chosen by prehistoric artists to paint schematic key themes (male figures, idols, quadrupeds). Finally, we investigate the acoustic dimension of Baume Brune by comparing the distant and close auditory perception of painted and non-painted shelters. In this framework, we argue that shelters with rock art possess the greatest acoustic qualities of the whole cliff.     

非痴呆型血管性认知功能障碍的研究进展

随着血管性痴呆(vascular dementia,VD)的发病率逐年升高,我们对血管性痴呆的研究也不断深入。目前国内外学者主张根据疾病的发展阶段对VD进行划分,从而针对不同阶段病情的发展进行有效的治疗,以免延误最佳治疗时机。非痴呆型血管性认知功能障碍(vascular cognitive impairment no dementia,VCIND)是血管性痴呆的早期阶段,多发生在血管性认知损害之前或早期。在认知损害发生之前,血管性因素及脑血管疾病是唯一可去除的病因,并且能够成为延缓甚至逆转痴呆进展的干预靶点。因此,早期诊断并及时治疗血管性因素及脑血管疾病对于降低血管性痴呆的发病率,预防血管性认知障碍(vascular cognitive impairment,VCI)具有重要意义。本文对近年来VCIND的流行病学、神经心理学、影像学、预防和治疗的进展作一综述。     

儿童社区获得性支原体肺炎病原学与影像学特征分析

目的:回顾性分析我院儿童社区获得性肺炎(Community-acquired pneumonia,CAP)患儿病原学检测结果,为本地区CAP患儿的临床治疗提供参考依据。方法:选取2014年5月-2018年5月812例符合中华医学会儿科学分会制定的儿童社区获得性肺炎(2013修订)诊断标准的CAP患儿,分析患儿的临床特征及影像学检查结果,并进行分析。结果:非重症CAP患儿812例,CAP占10.2%;感染病原体例数481例,阳性检出率为59.2%;1月-1岁龄组与1-5岁龄组比较差异无统计学意义(P0.05);5-14岁龄组发热发生率明显高于前两组,差异均有统计学意义(P0.05)。咳嗽、喘息、固定湿啰音发生率集中在1月-1岁龄组与1-5岁龄组,且高于5-14岁龄组发生率(P0.0);肺部影像学改变的患儿共657例,占80.9%。三个年龄组;肺部影像学改变差异有统计学意义(P0.05)。结论:不同年龄段CAP患儿病原体检出率不同;不同年龄和不同病原学感染的儿童CAP的影像学表现各有特点,对于临床医生早发现、早诊断、早治疗具有一点的指导性意义。