Bilateral versus unilateral sudden sensorineural hearing loss.

OBJECTIVES: To analyze the clinical characteristics and treatment results between bilateral (bi-) and unilateral (uni-) sudden sensorineural hearing loss (SSNHL). STUDY DESIGN AND SETTING: A retrospective study. METHODS: Three hundred twenty-four patients with SSNHL were classified into two groups; simultaneous bi-SSNHL (n = 16) and uni-SSNHL (n = 308). We compared clinical characteristics, medical history, hearing level, and treatment results between the 2 groups. RESULTS: The incidence of bi-SSNHL was 4.9 percent of overall patients with SSNHL. Bi-SSNHL occurs more commonly in patients of older age, with preexisting diabetes mellitus, and lipid panel abnormalities compared with uni-SSNHL. Ten patients (62.5%) in the bi-SSNHL group showed hearing recovery in 1 or both ears compared with 56.5 percent of patients with uni-SSNHL. Only 12 (37.5%) of all 32 ears recovered in bi-SSNHL, which was significantly lower than in uni-SSNHL. CONCLUSION: Bi-SSNHL has a very low incidence and lower recovery rate than uni-SSNHL. Recognition of similarities and differences between bilateral and unilateral SSNHL can help in counseling and managing the patients.     

面神经损伤诱导主要组织相容性复合体抗原表达

探讨外周面神经损伤诱导面神经核小胶细胞表达主要组织相容性复合体抗原及其动态变化。面神经损伤后采用免疫组织化学技术，以单克隆抗体ＯＸ１８检测ＭＨＣⅠ类抗原，单克降抗体ＯＸ６检测ＭＨＣⅡ类抗，原观察ＭＨＣ抗原阳性细胞的形状、分布及数量变化。     

脂肪饮食与胆石症关系的调查研究

本文通过荤食组、常食组、素食组与胆石症发病率关系的调查,发现荤食组的发病率14/35(40%)比其它两组8/35(22.85%)、2/35(5.71%)更高。同时发现与病人的高血脂水平呈正相关。荤食组的胆固醇和甘油三酯水平分别为5.4±0.85和1.88±1.02,并且比常食组5.08±1.18,1.76±0.62和素食组4.88±0.41,1.67±0.36更高。结果提示:限制大量的胆固醇和脂肪饮食可降低胆石症的发病率。     

兔乳酸脱氢酶C4的分离纯化及动力学研究

建立兔乳酸脱氢酶Ｃ４（ＬＤＨ－Ｃ４）分离纯化的新方法，研究该酶的动力学特性。采用Ｂｌｕｅ Ｄｅｘｔｅｒａｎ和Ｓｅｐｈａｒｏｓｅ ４Ｂ交联制成Ｂｌｕｅ Ｄｅｘｔｒａｎ－Ｓｅｐｈａｑｒｏｓｅ ４Ｂ染料配体亲和层析柱，结合ＱＡＥ－Ｓｅｐｈａｄｅｘ Ａ４５０离子交换层析分离兔ＬＤＨ－Ｃ４，以作图法测定该酶动力学数据。     

维克胃炎冲剂治疗慢性浅表性胃炎44例临床观察

将胃镜确诊的慢性浅表性胃炎８４例分为两组，治疗组４４例，男性２８例，女性１６例、平均年龄３３±１６岁。口服维克胃炎冲剂１包（５ｇ３次／ｄ）疗程为２０ｄ，显效率７９．５％。对照组４０例：男性２６例，女性１４例，平均年龄３６±１３岁，口服三九胃泰１包３次／ｄ，疗程为２０ｄ，显效率为２５％，两组比较Ｐ＜０．０１，值得选用维克胃炎冲剂。     

基于SP的CBL联合TBL教学在重症医学科临床教学中的应用

目的　研究在重症医学科临床教学中应用基于标准化病人（standardized patient,SP）的以案例教学法（case-based learning,CBL）联合以团队为基础（team-based learning,TBL）教学的教学效果。方法　将60名在重症医学科临床学习的医学生分为两组,各30名,分别接受以授课为基础的教学（lecture-based learning,LBL）和基于SP的CBL联合TBL教学。通过对两组学生的临床综合能力进行测评,以及学生对两种教学方法的满意度调查,对教学效果进行评价。采用SPSS 19.0进行卡方检验和t检验。结果　与LBL教学相比,接受基于SP的CBL联合TBL教学的学生的临床综合能力更优（P<0.05）,主要体现在临床思维能力[（4.18±0.55）vs. (3.66±0.47）]、临床技能能力[（4.03±0.61）vs. （3.59±0.52）]及与患者的沟通交流能力[（4.11±0.58）vs. (3.74±0.50）]方面;而且观察组学生对教学方法的满意度也更高（P<0.05）,主要体现在学习兴趣[（4.38±0.72）vs.（3.65±0.56）]、自主学习能力[（4.24±0.71）vs.（3.91±0.52）]、临床思维能力[（4.09±0.66）vs.（3.22±0.54）]、沟通交流能力[（4.42±0.60）vs.（3.67±0.48）]及团队合作精神[（4.15±0.58）vs.（3.78±0.51）]方面。结论　基于SP的CBL联合TBL教学在重症医学科的临床教学中切实可行,具有良好的教学效果。     

放松训练对高考学生身心健康的影响

目的　研究放松训练法对高考学生身心健康的影响 ,为考生心理健康水平的提高 ,减轻考前焦虑提供科学措施。方法　选择同一学校两个高中三年级的班级 ,分别作为对照组 ( n=72 )和放松训练组 ( n=70 )。高考前的 3个月开始进行全身放松训练 ,每天约 2 5分钟 ,连续两个半月。比较训练前后两组考生的心理健康水平 ,并评价放松训练法的作用效果。结果　对照组考生在考前半个月 SCL-90的阳性项目数以及焦虑、强迫、躯体化、人际敏感、抑郁等 5项因子分和 SAS总均分均显著高于 3个月前 ;放松训练组考生经 2个半月的放松训练后 ,其 SCL-90的焦虑、强迫、人际敏感、抑郁、躯体化等 5项因子分和 SAS总均分均显著低于放松训练前 ,且阳性项目数、总均分以及焦虑、强迫、抑郁、躯体化、人际敏感等 5项因子分和 SAS总均分均显著低于对照组高考前半月的相应分值。结论　随着高考的临近 ,考生的心身反应增多且加重 ,心理健康水平明显下降 ;全身放松训练法能有效改善考生的各种心身反应和紧张焦虑状况 ,有利于保护考生的心理健康     

47例骨髓穿刺干抽的临床和病理分析

分析４７例骨髓穿刺干抽的临床和病理改变，干抽占同期１３１９例骨穿的３．６％。根据骨髓细胞的密度和间质纤维增殖的程度，把干抽的原因分为４类：高细胞伴间质细胞增多者１９例（４２．２％）；间质细胞增多者１４例（３１．１％）；高细胞者８例（１７．８％）及低细胞者４例（８．９％）。主要疾病为：急性淋巴细胞白血病（２５．５％），急性非淋巴细胞白血病（１７．０％），慢性白血病（１４．９％），骨髓转移瘤（１０．６     

C/C复合材料表面等离子喷涂HA涂层在SBF中的试验

目的 探讨不同模拟体液对HA涂层体外生物学行为的影响。方法采用等离子体喷涂法,在碳／碳复合材料表面制备HA涂层,并对涂层进行了热处理。利用X射线衍射仪(X-ray diffraction)、扫描电子显微镜(Scanning electron microscopy)等检测手段,分析该涂层的物相和形貌,观察HA涂层在模拟体液中的影响。结果XRD检测结果表明,在模拟体液浸泡过程中,涂层的主要组成相的相对含量和结晶度不断发生变化。由SEM分析结果可知,在浸泡过程中,内送粉方式下制得的HA涂层的表面沉积物呈现近似网状的结构。同时,在Ringer溶液中,可以观察到HA涂层溶解痕迹。结论通过适当的热处理可以恢复HA的结构完整性,同时提高涂层的结晶度。     

Nerve growth factor-induced hyperexcitability of rat sensory neuron in culture

Abnormal spontaneous firing of primary sensory neurons is considered to be a cause of neuropathic pain. However, pathogenic mechanisms of hyperexcitable sensory neurons in neuropathic model animals are unclear. We examined effects of chronic treatment of nerve growth factor (NGF), one of candidate mediators for the pathogenesis, on excitability of sensory neurons by voltage-clamped recording in a cell-attached configuration. From rat dorsal root ganglion (DRG) neurons cultured without NGF, only stable holding currents without spontaneous firing activity were recorded. On the other hand, more than 20% neurons cultured in the presence of NGF for more than 3 days showed spontaneous current spikes at frequencies between 0.1 and 5 Hz. Each spikes had an initial inward phase followed by the outward phase, resulted from spontaneous transient depolarization followed by transient hyperpolarization. These spontaneous spikes were abolished by tetrodotoxin, lidocaine and reduction of extracellular concentration of Na+ from 154 mM to 100 mM, in all-or-none fashion, suggesting that spontaneous current spikes reflected spontaneous action potentials. From these results, it became evident that DRG neurons of adult rats had a nature to respond to NGF and obtained the abnormal hyperexcitability to fire spontaneously.