The effect of smoking at different life stages on bone mineral density in elderly men and women

To assess the effect of smoking on bone mineral density (BMD) at different life stages, to examine whether the effect of smoking differs between men and women, and to discover whether its effect in women differs according to history of estrogen use, a cohort study was carried out with single cross-section measurement of BMD by single and dual photon absorptiometry. The setting was the Framingham Study, a population-based cohort study with over 40 years prospectively collected data on smoking. Subjects (n=1164) consisted of cohort members participating in the 20th biennial Framingham examination (1988–1989). The measurements included in the study were BMD measured at the hip, spine and radius, smoking history ascertained at all Framingham Study examinations since 1948, and other factors affecting BMD (age, weight, estrogen use, caffeine use, alcohol use and physical activity). Neither current smoking, recent (last 10 years) smoking, nor early adulthood smoking resulted in significantly lower BMD at any skeletal site among women who had not taken estrogen. Among women who had taken estrogen, BMD at most sites was lower among current or recent smokers, although the small numbers of smokers made it difficult to find significant differences at all skeletal sites. Among men, a consistently lower BMD at all skeletal sites was observed for smokers regardless of when in their life they smoked (4–15.3% lower), although the effect of smoking during early adulthood was of a lesser magnitude (4–8% lower). Former male smokers who had quit <10 years ago had lower BMD than men who had quit 10 years ago. In conclusion, in women who had used estrogen, BMD was lower in current or recent smokers than it was in non-smokers. In men, smoking at any stage of life had adverse effects on the skeleton that was independent of weight, alcohol or caffeine use, implying other mechanisms for smoking's effect on bone.     

Neurofibrillary tangles and Lewy bodies in the locus ceruleus neurons of the aged brain

Summary The presence of Lewy body and neurofibrillary tangle in the locus ceruleus neurons of aged brain is described. Ultrastructural study revealed that in some Lewy bodies the presence of twisted tubules or paired helical filaments amongst the filaments of the Lewy body. A quantitative analysis of serial sections of locus ceruleus from aged brain, incidences of the Lewy body and neurofibrillary change were 0.07% (9/11,515) and 6.6% (15/11,515), respectively. The incidence of neurons containing both structures was 0.008% (1/11,515).     

老龄喉癌患者喉近全切除术远期疗效观察

目的：探讨老龄喉癌患者行喉近全切除术的远期疗效。方法：对12例65岁以上喉癌患者行喉近全切除术，在Pearson手术基础上，保留部分环状软骨板、环杓关节及喉返神经。结果：3、5年生存率为75．0％及66．7％。术后2周内全部恢复吞咽功能。10例获得理想发声，2例发声失败。结论：对于有心、肺、脑等基础疾病的老龄喉癌患者，喉近全切除术是一种较好的方法。     

老年性痴呆患者的听觉损害

目的　确定老年性痴呆患者 (seniledementiaoftheAlzheimer′sdisease ,AD)有无周围性听功能障碍及其与认知障碍的关系。方法　利用纯音测听、言语识别率、声导抗、听觉脑干反应检测AD患者 43例 ,健康老年人 50例 ,评定受试者测听可信度 ,统计测试结果 ,并将上述结果同受试者简易精神状态量表 (mini mentalscaleofequastionnaire ,MMSE)得分进行对照分析 ,寻找二者之间的关系。结果　受试者两耳间周围听力差异无显著性 ,以右耳听力结果 ( x±s)进行统计。AD组纯音听阈为 (2 6 3± 8 5)dBHL和 (2 9 1± 8 7)dBHL ,言语识别率为 (85 5± 5 5) % ;对照组纯音听阈为 (2 3 2± 1 0 6)dBHL和 (2 6 2± 1 1 8)dBHL ,言语识别率为 (87 6± 6 8) %。虽然AD组周围听功能检查结果低于对照组 ,但无统计学意义 (P >0 0 5)。测听可信度、声导抗和ABR阈值两组间差异无显著性 (P >0 0 5)。结论　老年性痴呆患者纯音听阈和言语识别率与老年聋相似 ,其周围听功能障碍与MMSE认知量表得分无关。     

不同麻醉方法用于老年病人上腹部手术的对比研究

目的　比较 3种麻醉方法用于老年病人上腹部手术的优缺点。方法　 6 0例择期行胃癌根治术的老年患者 ,随机分为 :A(单纯硬膜外 )、B(单纯全麻 )、C(硬膜外复合全麻 ) 3组 (每组 2 0例 )。硬膜外阻滞选择T8、T9椎间隙穿刺置管 ,局麻药用 1%利多卡因 +0 .2 5 %布比卡因混合液 ;全麻采用静吸复合 ;术中连续有创监测桡动脉压、心率 ;分别于不同时间点抽取外周静脉血测定胰岛素、皮质醇、肾上腺素和血糖浓度。结果　 3组术中血皮质醇、血糖浓度均升高 ,但C组低于A、B两组 (P <0 .0 5 ) ;切皮后 12 0分钟时均达高峰 ;血胰岛素水平术中呈上升趋势 ,组间比较无显著性差异 ;A、B组术中肾上腺素水平明显高于C组 (P <0 .0 5 ) ;C组全麻诱导后MAP下降较A、B组明显 ,但麻醉维持期较A、B组稳定 ;拔管时B组MAP、HR升高幅度较C组显著。结论　 3种麻醉方法均不能完全阻断手术创伤性刺激导致的应激反应。硬膜外阻滞复合全麻用于老年患者行上腹部手术 ,应激反应小 ,全麻药用量小 ,利于保持各系统功能的稳定和术后镇痛。     

三维适形低分割放射治疗老年非小细胞肺癌疗效观察

目的　探讨三维适形低分割放射治疗老年非小细胞肺癌的疗效。方法　 4 5例患者均采用低分割治疗 ,处方剂量为 4～ 5Gy,隔日 1次 ,总量 4 8～ 5 5Gy。结果　CR 2 3例 ( 5 1.1% ) ,PR 15例( 33.3% ) ,NC 5例 ( 11.1% ) ,PD 2例 ( 4 .4 % ) ,RR 38例 ( 84 .4 % )。 1、2、3年生存率分别为 6 6 .7%、4 8.9%、39.1%。结论　三维适形放射治疗对于老年非小细胞肺癌是一种反应较小 ,痛苦较轻 ,安全有效的治疗措施     

老年人突发性聋

为探讨老年人突发性聋的发病特点，以指导临床诊断与治疗，将４５例６０岁以上老年突聋和临床表现、并发症及预后等，与５７例中青年突聋进行对比分析。结果发现：４５例中，２４例合并有心血管疾病，明显高于对照组。老年组听力曲线以下降型多见，对照组以上升型曲线多见。入院时两组平均听力分别为８７．３ｄＢ和８４．６ｄＢ治疗后老年组听力平均提高２０．５ｄＢ，对照组提高３８．９ｄＢ。研究说明，老年突聋常合并较高的心血管     

人工股骨头置换术治疗股骨颈骨折40例报告

目的分析评价40例中老年股骨颈骨折患者的临床诊治原则、方法及疗效。方法应用骨水泥型人工关节置换治疗股骨颈骨折40例，术中输血2例，平均输血400ml。结果对36例患者进行随访，平均随访8个月(2～28个月)，无一例患者围手术期出现死亡，切口Ⅰ期愈合，无感染。住院时间12～22d。36例患者功能满意，生活自理。结论应用骨水泥型人工股骨头置换治疗股骨颈骨折是可行的方法，但对手术风险需进行预测，对相关疾病进行预防治疗，并严格掌握其手术适应证。     

老年人急性心肌梗死临床特点及近期预后的相关危险因素分析

目的 探讨老年人急性心肌梗死（AMI）临床特点及影响近期预后的相关危险因素。方法 回顾性分析122例老年AMI患者资料，年龄大于60岁，根据发病后4周内预后分为存活组和死亡组。对发病时的年龄、性别、吸烟史，是否合并高血压病、糖尿病、高脂血症及AMI发病后24h内TG、TC水平用t检验或χ^2检验方法，进行单因素分布；同时对影响老年人AMI预后的相关危险因素进行多元Logistic回归分析。结果 单因素分析表明：年龄、吸烟、糖尿病、高血压病和高脂血症在生存组和死亡组之间的差异有统计学意义。多因素分析发现年龄每增加1岁，其死亡危险性增加1．34倍；吸烟者死亡危险性是非吸烟者的6．02倍；有高脂血症史者死亡危险性是无高脂血症史者4、78倍。结论老年人AMI症状不典型，易漏诊误诊；年龄、吸烟史、糖尿病、高血压病和高脂血症史是影响老年人AMI近期预后的高危因素。     

老年高血压患者脉压与左心室肥厚的关系

目的探讨老年高血压患者脉压(PP)与左心室肥厚(LVH)的关系。方法老年高血压患者212例,按PP水平分为<40mmHg、40～60mmHg、60～80mmHg及>80mmHg4组,分别进行心脏超声检查,计算出左室质量指数(LVMI),分析PP与LVMI的关系。结果随着PP的增大,LVMI明显增加,各组间LVMI有显著性差异(P<0.05)。结论老年高血压患者PP增大可以促进LVH的发生及发展,PP是LVH重要的危险因素及预测因子。