冠心病心绞痛中医证候规律研究的比较分析

对冠心病心绞痛中医证候规律研究类的文献,从证候要素分布的差异、主要证候分类的差异、证候要素与理化指标的相关研究等方面进行比较分析,初步认为本病的证候要素应证组合是以气虚、血瘀为中心,阴虚、痰浊为次中心,气滞、阳虚、热蕴为外围所组成的多层次的证候体系。     

医学生人格特征形成的相关性研究

目的分析影响医学生人格特征形成的相关因素，为发展大学生的人格特征探寻其理论依据。方法用EPQ量表对601名医学生进行团体测验，其数据在WJZ心理测验软件上预处理后转入电子表格，用SPSS11．0软件进行统计学分析。结果EPQ量表中E、N、P、L的均值、标准差与常模比较，其差异有统计学意义；E，P，L3个维度间有不同程度的相关性：当以EPQ为因变量，15个影响因素为自变量进行逐步回归分析时，进入回归方程的主要是人际关系、家庭、学校教养(育)方式、经济状况、身心伤害否及自我形象、才能、专业的满意度。结论医学生的人格特征还处于发展阶段，其形戍过程与上述因素密切相关。     

Voronoi Polyhedra Analysis of Optimized Arterial Tree Models

Topological and metric properties of Voronoi polyhedra (VP) generated by the distal end points of terminal segments in arterial tree models grown by the method of constrained constructive optimization (CCO) are analyzed with the aim to characterize the spatial distribution of their supply sites relative to randomly distributed points as a reference model. The distributions of the number N _f of Voronoi cell faces, cell volume V, surface area S, area A of individual cell faces, and asphericity parameter of the CCO models are all significantly different from the ones of random points, whereas the distributions of V, S, and are also significantly different among CCO models optimized for minimum intravascular volume and minimum segment length (p < 0.0001). The distributions of N _f , V, and S of the CCO models are reasonably well approximated by two-parameter gamma distributions. We study scaling of intravascular blood volume and arterial cross-sectional area with the volume of supplied tissue, the latter being represented by the VP of the respective terminal segments. We observe scaling exponents from 1.20 ± 0.007 to 1.08 ± 0.005 for intravascular blood volume and 0.77 ± 0.01 for arterial cross-sectional area. Setting terminal flows proportional to the associated VP volumes during tree construction yields a relative dispersion of terminal flows of 37% and a coefficient of skewness of 1.12. © 2003 Biomedical Engineering Society. PAC2003: 8719Uv, 8710+e, 4720Ky, 0260Pn, 0230Oz     

精神分裂症患者伴发代谢综合征的相关因素

目的:探索住院精神分裂症患者伴发代谢综合征的相关因素。方法:抽取5个地区5家医院的住院精神分裂症患者,调查伴发代谢综合征的相关因素。内容包括:年龄、病程、精神病药物与剂量、空腹血糖、血脂等。结果:资料完整的797例住院精神分裂症患者,伴发代谢综合征者共153例(19．2％)。病程长、服用氯氮平、服用药物时间长、高剂量用药患者MS发生率高(P<0．05、P<0．01);L0gistic回归分析显示:代谢综合征的危险因素有高龄、服用氯氮平、CRP浓度偏高、吸烟、服用抗精神病药物时间长。结论:影响住院精神分裂症患者伴发代谢综合征的相关因素有氯氮平、病程、用药时间、吸烟等。     

Characteristics of instructed and uninstructed interpersonal coordination while walking side-by-side

We examined how people synchronize their leg movements while walking side-by-side on a treadmill. Walker pairs were either instructed to synchronize their steps in in-phase or in antiphase or received no coordination instructions. Frequency and phase analysis revealed that instructed in-phase and antiphase coordination were equally stable and independent of walking speed and the difference in individually preferred stride frequencies. Without instruction we found episodes of frequency locking in three pairs and episodes of phase locking in four pairs, albeit not always at (or near) 0 degrees or 180 degrees. Again, we found no difference in the stability of in-phase and antiphase coordination and no systematic effects of walking speed and the difference in individually preferred stride frequencies. These results suggest that the Haken-Kelso-Bunz model for rhythmic interlimb coordination does not apply to interpersonal coordination during gait in a straightforward manner. When the typically involved parameter constraints are relaxed, however, this model may largely account for the observed dynamical characteristics.     

Panoramic radiomorphometry and vertebral fractures in Spanish postmenopausal women

ObjectiveTo evaluate the relationship between panoramic radiomorphometric indexes, and the presence of osteoporotic fractures in a Spanish postmenopausal women.MethodsA sample of 120 women (60 with fragility spine fractures and 60 healthy), aged 55–70 years, with fragility spine fractures, were included in this cross-sectional study that was conducted from 2008 to 2011. All the women were referred to undergo a radiological spine examination, spinal densitometry and a panoramic radiograph for assessing osteoporosis using 3 radiomorphometric indexes: Panoramic Mandibular Index (PMI), Mental Index (MI) and Mandibular Cortical Index (MCI). According to mandibular cortical shape, in MCI, three groups were defined: C3 (osteoporosis), C2 (osteopenia), C1 (health).ResultsSignificant differences were found between all the MCI groups due to their composition between fractures and non-fractures. C1 group (healthy) has less fractures women than C2 (Bonferroni p < 0.001), C1 has less fractures than C3 (Bonferroni p < 0.001) and finally, C2 has less fractures than C3 (Bonferroni p < 0.006). PMI and MI values were significantly lower in cases than in controls (U Mann–Whitney p < 0.001).ConclusionsPanoramic radiomorphometrics mandibular indexes such as MCI, PMI, and MI, may be useful for identifying the population at higher risk for fracture. The relationship between panoramic index and osteoporosis remains unclear and further studies using fragility fracture as a real marker of osteoporosis are warranted to clarify the exact role and effect of one condition on the other and the corresponding clinical implications.     

乙型重型肝炎患者主要肝功能指标对预后影响的Meta分析

目的探索主要肝功能指标对乙型重型肝炎患者预后的影响。方法应用Meta分析的方法对有关研究TBil、PTA、ALB、CHO、CHE、AFP、ALT及AST／ALT对乙型重型肝炎患者预后影响的文献进行系统评价。以加权平均数（WMD）作为评价指标,共纳入Meta分析的回顾性队列研究文献32篇,累计病例21949例。以受试者工作特征曲线（ROC）分析各指标对预后影响的敏感程度。结果死亡组TBil水平高于生存组,差异具有统计学意义（P〈0．01）;死亡组PTA、ALB、CHO、CHE、AFP水平低于生存组,差异具有统计学意义（P〈0．01）;两组ALT及AST／ALT比较差异无统计学意义（P=0．54,0．09）。AFP的ROC值最高为0．943（P〈0．01）。结论TBil可能是重型肝炎患者预后的危险因素,PTA、ALB、CHO、CHE和AFP可能是重型肝炎患者预后的保护因素,ALT和AST／ALT对重型肝炎患者预后无明显影响。AFP对预后的判断最为敏感,其次为PTA和CHO。     

华中地区近代人群上、下颌第一臼齿齿冠及齿尖面积

目的 通过对282枚华中地区新石器时代到明清时期(距今5 000～200年)人类上、下颌骨第一臼齿(M1和M1)齿冠和齿尖面积的测量和分析,取得华中地区近代人群牙齿尺寸的准确数据和变异情况. 方法 采用统一标准对每颗牙齿咬合面行高分辨率摄片.运用数字图像技术与形态测量方法获取每颗牙齿的齿冠绝对面积和单个齿尖相对面积. 结果 齿尖相对面积大小顺序为:M1:原尖>前尖>后尖>次尖;M1:原尖>后尖>下次尖>内尖>下次小尖;M1齿尖相对面积的变异总体上大于M1;从大约5 000年前的新石器时代到明清时期,华中地区人类M1和M1齿冠绝对面积分别缩小了6.57%和6.15%. 结论 食物结构的变化可能是造成臼齿结构变化的主要原因,在此期间M1和M1相对齿尖面积一直保持稳定,提示现代人类相对齿尖大小比例至少在距今5 000年前的新石器时代就已经形成.     

Clinical and demographic characteristics of adenomatoid odontogenic tumors: analysis of 116 new cases from a single center

IntroductionThe adenomatoid odontogenic tumor is a relatively uncommon odontogenic neoplasm representing about 4.7% of all odontogenic tumors.ObjectiveThe aim of this study was to determine the demographic and clinical profile of the adenomatoid odontogenic tumors in a Sri Lankan population.MethodsData gathered from the cases received for a period of 38 years from the Department of Oral Pathology, Faculty of Dental Sciences, University of Peradeniya. Request forms, biopsy reports and electronic data base of the department were used to obtain relevant information. Demographic data including age, gender and location of the tumor were included in the analysis.ResultsOut of 116 cases of adenomatoid odontogenic tumor, the mean age was 21.02 ± 11.24. It occurs more fre quently in the second decade of life, more prevalent in females, most often associated with the maxilla, predominantly affecting anterior jaw bones and presenting mostly in the right side of the jaw bone. The results from the present study showed the statistically significant relationship with site of occurrence (maxilla/mandible) and age (p < 0.005). Further, depending on whether it occurs in anterior/mid/posterior site also showed a significant relationship with age (p ≤ 0.001). However, side of occurrence, left or right or site of occurrence, showed no statistically significance with age (p > 0.05).ConclusionAdenomatoid odontogenic tumor occurs more frequently in the second decade of life with a significant female predominance and the commonest site is anterior maxilla. This study revealed few differences on demographic and clinical presentations of adenomatoid odontogenic tumor from some regions of the world.