营养不良老年人非药物干预临床实践指南

老年人是营养不良的高发人群,营养不良与众多不良临床结局密切相关,严重影响老年人的身体健康和生活质量,给家庭和社会造成沉重负担。因此,采取有效措施改善老年人的营养不良至关重要,非药物干预是改善营养状况的重要措施。然而,国内尚无专门针对营养不良老年人的非药物干预临床实践指南,因此,中国老年护理联盟、国家老年医学中心和国家老年疾病临床医学研究中心的营养专家,通过对老年人营养不良最新的国内外文献的全面检索与分析,采用推荐意见评估、制订及评价(GRADE)分级体系制订了本指南,针对营养不良老年人非药物干预提出9条推荐意见,以期能够改善老年人营养不良状况,提高生活质量。本指南侧重于可经口进食的营养不良老年人,聚焦于肠内营养,肠外营养不在本指南讨论范围内。     

指侧方静脉动脉化再植末节断指

目的：探讨指侧方静脉动脉化再植末节断指的疗效。方法2007年3月至2012年4月,收治末节断指患者34例,均在正常指动脉多次吻合失败后行静脉动脉化。20例采用指侧方静脉动脉化再植,将近端指动脉与远端指侧方静脉吻合（A组）;14例采用指腹静脉动脉化再植,用近端指动脉与远端指腹静脉吻合（B组）。结果 A组患者末节断指全部成活,创面均Ⅰ期愈合;B组中有4例坏死。本组中有27例随访6～14个月（A组18例,B组9例）。 A组再植末节断指指腹饱满,指体无明显萎缩,B组指体轻度萎缩;A组指甲长度（15.6±2.7） mm,长于B组（11.9±2.2） mm;A组DIPJ活动度（62±4）°,大于B组（45±3）°;A组两点分辨觉（4.6±0.3） mm,小于B组（7.4±0.6） mm;A组再植断指感觉测定为S（3.49±0.33）,高于B组S（2.47±0.44）;手指各关节活动度参照TAM标准：A组优良率94.4%,B组优良率87.5%,两组优良率比较差异无统计学意义（P=0.534）。结论指侧方静脉动脉化是正常供血失败后的末节断指再植的有效方法。     

自制负压吸引装置在肠外瘘患者伤口护理中的应用

目的 寻求一种安全、有效收集肠外瘘液的方法,解决临床的护理难题,减轻患者痛苦,促进患者伤口的愈合,保护瘘口周围皮肤.方法 将我院收治的肠外瘘患者随机分成对照组和观察组各15例.对照组采用造口袋收集肠液,观察组采用自制负压吸引装置,即16F吸痰管,前端开4～5个侧孔后包埋于湿纱布中置入瘘口内,尾端通过造口袋底部开口穿出与持续负压引流装置连接,用缝线结扎造口袋与吸痰管,以防渗漏.结果 观察组的伤口愈合时间、每日换药次数及平均住院总费用显著低于对照组(均P＜0.01).结论 自制负压吸引技术用于肠外瘘患者可缩短伤口愈合时间、减少换药次数及住院总费用.     

连续性肾脏替代治疗中滤器后加热法对患者体温的影响

目的探讨连续性肾脏替代治疗(CRRT)中滤器后加热法对患者体温的影响。方法将60例行CRRT治疗的患者随机分为对照组和观察组各30例,对照组按常规将加温装置连接到置换液的管路上,观察组将加温装置连接到滤器后静脉端血液回输管路上。两组均于CRRT治疗开始3h、6h、12h时测量患者体温及深静脉置管的动、静脉端的血液温度;比较两组治疗前后溶血反应相关检验结果。结果在CRRT治疗不同时段,两组深静脉置管的动、静脉端的血液温度比较,干预主效应均P<0.05;治疗12h时观察组低体温发生率显著低于对照组(P<0.05)。两组治疗前后溶血反应相关检验结果比较,差异无统计学意义(均P>0.05)。结论滤器后加热血液回输管路的方式可安全有效地补充CRRT治疗中循环热量,降低CRRT治疗中低体温发生率。     

Differential modulation of CD4 and CD8 T-cell proliferation by induction of nitric oxide synthesis in antigen presenting cells

BACKGROUND: On antigenic stimulation, CD4 T cells generally proliferate more readily than CD8 T cells. The purpose of the present experiments was to determine whether nitric oxide (NO) might differentially modulate CD4 vs. CD8 T-cell proliferation. METHODS: Various concentrations of C57BL/6 iNOS +/+ and -/- bone marrow (BM)-derived antigen presenting cells (APC) (obtained by culture in granulocyte-macrophage colony-stimulating factor [GM-CSF] and interleukin [IL]-4) were cultured with purified BALB/c CD4 or CD8 T cells. RESULTS: Proliferation of CD4 T cells was similar in the presence of both NO synthase (iNOS) +/+ and -/- APC, whereas CD8 T cell proliferation was inhibited at the higher concentrations of iNOS +/+ dendritic cells (DC), coincident with increased levels of NO in the culture supernatant. Analysis of cytokine levels revealed that more interferon (IFN)-gamma, a potent inducer of NO synthesis in many cell types, was present in CD8 T cell than in CD4 T-cell-APC cultures. Addition of IFN-gamma to CD4 T-cell-APC cultures resulted in induction of NO synthesis and inhibition of proliferation at higher levels of NO than that required to inhibit CD8 T cell proliferation. However, CD4 T-cell proliferation was moderately inhibited in the presence of lipopolysaccharide (LPS)-stimulated CD11c DC, coincident with production of IFN-gamma and induction of NO synthesis. CONCLUSIONS: These findings indicate that CD8 T-cell proliferation can be inhibited by lesser amounts of APC-derived NO than is necessary to inhibit CD4 T cell proliferation. NO synthesis was not initiated in CD4 T cell-DC cultures unless costimulatory molecules were up-regulated and IFN-gamma was produced.     

肾上腺囊性占位性病变的诊治分析

目的:提高肾上腺囊性病变的诊治水平。方法:回顾性分析38例肾上腺囊性病变患者的临床资料,经影像学、手术及病理检查证实,其中非肿瘤源性囊性病变30例,肿瘤源性囊性病变8例。结果:囊肿内出血、感染或自发性出血所致高密度囊肿24例,单纯性囊肿6例。前者均有不同程度的腰、背、腹部胀痛,其中3例伴有贫血,2例伴有肝功能异常;后者均无临床症状。B超检查肿物内无血管,CT、MRI增强扫描肿物无强化,内分泌检查正常。肿瘤源性囊性病变患者中,嗜铬细胞瘤5例,皮质腺瘤2例,节细胞神经瘤1例。5例有激素活性症状,内分泌检查部分有相应激素水平升高。B超、CT、MRI显示囊壁>0.3 cm,且厚薄不均,CT、MRI增强扫描后,囊壁可有强化,以嗜铬细胞瘤囊壁强化最为显著。手术治疗36例,除1例因车祸、1例因脑血管意外死亡外,34例效果满意。结论:B超、CT、MRI可帮助诊断肾上腺囊性病变。无论是非肿瘤源性肾上腺囊性病变,还是肿瘤源性肾上腺囊性病变,只要条件允许,均应手术治疗。     

Klippel-Trenaunay综合征的微创治疗

目的总结血管内介入、激光光凝、硬化剂注射等微创技术治疗Klippel-Trenaunay综合征(Klippel-Trenaunay syndrome,K-TS)的临床经验. 方法 1989年2月～2004年11月我院收治32例K-TS,对深部异常的动静脉瘘和下肢异常的动脉侧枝进行栓塞治疗,对功能不全的深静脉瓣膜进行微创修复,对粗大的曲张静脉行激光光凝治疗,对肢体血管瘤和局限性迂曲成团的细小静脉丛注射硬化剂. 结果 32例随访1～7年,平均5年,未见复发.29例肢体曲张静脉包括网状静脉扩张完全消失,造影检查动静脉瘘当即消失,股骨异常血液供应消失.32例肢体增粗现象逐渐减轻.32例血管瘤于注射后2～3个月完全硬化、消失或明显减小但无按压缩小现象.7例瓣膜修复者多普勒检查股浅静脉无明显返流. 结论血管内介入、血管内激光光凝、硬化剂注射、小切口瓣膜修复等综合治疗K-TS可取得较好的疗效,值得推广应用.     

尖锐湿疣皮损中朗格汉斯细胞功能状态的研究

目的通过分析尖锐湿疣(condyloma acuminatum,CA)皮损中郎格尔汉斯细胞(Langerhanscell,LC)的特征性表型,探讨其在CA微环境中的功能状态。方法30例初发CA皮肤组织为标本,20例正常包皮为对照标本。应用免疫组化技术检测标本中LC的CD1a、HLA-DR、S-100蛋白的表达,采用Motic彩色医学图文分析系统以及光学显微镜进行定量、半定量分析,并对不同蛋白分子标记的LC数量进行相关性分析。结果(1)Motic彩色医学图文分析系统以及光学显微镜分析结果显示:与正常对照组相比,尖锐湿疣皮损中CD1a( )LC数量、表面标志物蛋白表达密度差异无统计学意义(P>0.05);而S-100( )LC、HLA-DR( )LC数量、蛋白表达密度则减少,差异有统计学意义(P<0.05);S-100( )LC/CD1a( )LC比值为0.082±0.061,与对照组相比差异显著(P<0.05)。(2)CA皮损表皮中CD1a( )LC、S-100( )LC、HLA-DR( )LC的平均灰度值相关性分析结果显示;CA皮损表皮中LC上CD1a与HLA-DR的表达呈显著正相关;CD1a( )LC、S-100( )LC以及S-100( )LC、HLA-DR( )LC两者之间无线性相关性。结论CA皮损中存在不同标记的LC,这些不同标记的LC的数量和其表面标记蛋白的表达密度和正常对照组相比存在差异,提示:CA微环境中LC功能异常是HPV致病的可能机制之一。     

Endovascular repair of abdominal aortic aneurysm in octogenarians: an analysis based on EUROSTAR data

PURPOSE: To investigate the early and late outcome after endovascular treatment of abdominal aortic aneurysm (EVAR) in octogenarians compared with patients aged < 80 years. METHODS: Patients treated for abdominal aortic aneurysm (AAA) with endovascular repair during the period 1996 to 2004 were collated in the EUROSTAR registry. This study group consisted of 697 patients aged > or = 80 years. Comparison was made with 4198 patients aged < 80 years with regard to the incidence of preoperative characteristics and outcomes of the procedure. RESULTS: The proportion of octogenarians treated by EVAR increased during the study period, from 11% in the first year to 18% in the last year. Octogenarians more frequently had cardiac disease, impaired renal function, and pulmonary disease (P = .03, P < .0001 and P = .0001). Thirty-two percent of the octogenarians were recorded unfit for open surgery as opposed to 22% in younger patients (P < .0001); they also had a larger aneurysm diameter (62 vs 58 mm, respectively; P < .0001). The 30-day and in-hospital mortality in octogenarians was 5% vs 2% in the younger group (P < .0001). More device-related complications and systemic complications, including cardiac disease, were noted in octogenarians (7% vs 5% and 19% vs 11%, P = .03 and P < .0001, respectively). This group of patients also had a higher incidence of postoperative hemorrhagic complications, including hematoma (7% vs 3%, P < .0001, respectively). No differences in conversion to open repair and post-EVAR rupture rate were observed. Aneurysm-related mortality and late all-cause mortality was 7% vs 3% and 10% vs 7%, both P < .0001. CONCLUSION: Our study supports that EVAR might be considered when treating elderly patients, provided their aneurysms are anatomically suited for the endovascular technique. The risk for late complications compared with open repair may be outweighed by a lower early mortality as well as a shorter time for physical recovery.