Assessment of global and regional left ventricular twist and displacement in anterior myocardial infarction using 2-dimensional strain imaging

The recent development of 2-dimensional strain (2D strain) imaging can provide a powerful alternative for assessing left ventricular (LV) torsion. This study was conducted to evaluate the global and regional left ventricular twist by 2D strain in patients with anterior wall myocardial infarction (AMI). A total of 55 AMI patients were divided into two groups according to their ejection fraction (EF) values (group A: LVEF ⩾ 50%; group B: LVEF < 50%), and 35 normal people served as the control group. Using 2-dimensional strain software, global and regional LV rotation and displacement were obtained at two planes. Compared with the control group, patients of group A showed reduced peak LV twist of the anterior and anterior-septal wall (9.26±1.89 vs 10.74±2.67; 9.71±1.71 vs 11.36±2.29, both P < 0.05), but the radial displacement and global twist were maintained (P > 0.05). Differently, regional and global LV twist and radial displacement in patients of group B deceased significantly, especially in the anterior and anterior-septal wall, as compared with patients in the control or group A (both P < 0.05). Moreover, a strong correlation was noted between peak twist and radial displacement; the twist-displacement loop was markedly distorted in patients of group B. This study demonstrated that 2D strain has a potential ability for quantification of left ventricular global and segment twist and radial displacement in patients with coronary artery disease.     

高血压前期中医干预研究的思路与方法

高血压病是一种严重威胁人类健康的常见病、多发病。2009年底最新数据显示我国高血压患病人数已突破2亿，而且还在以每年1000万的速度增加。有关文献报道显示，在我国40岁以上人群的死亡原因中，心血管病和脑血管病分别占第一位和第三位，而导致死亡的第一危险因素是高血压。因此对高血压及其并发症的一级预防控制势在必行。     

乙肝表面抗原携带状态结核患者抗结核治疗对肝损害的影响分析

目的研究抗结核治疗中乙肝表面抗原携带状态与肝损害的关系。方法选择武汉市结核病医院乙肝表面抗原阳性的活动性结核，并接受了3个月以上的抗结核药物治疗的病例156例作为病例组，以接受了3个月以上的标准抗结核治疗的非乙肝表面抗原携带者141例为对照组。进行回顾性病例对照研究。结果乙肝病毒携带组出现中一重度肝损害的病人的比例较对照组显著高。在肝损害恢复后，即使是乙肝病毒携带者，再次使用一线抗结核药也是安全有效的。结论对于HB-sAg阳性，HBeAg阴性的非活动性乙肝携带者可以进行常规的抗结核治疗，在每个月进行肝功能检测的情况下，可以采用推荐的包括异烟肼，利福平，乙胺丁醇和／或吡嗪酰胺的抗结核治疗方案。     

高龄患者后腹腔镜手术的麻醉管理

目的总结伴发全身性疾病的高龄患者后腹腔镜手术麻醉管理的经验。方法回顾性分析2002年10月-2007年1月81例高龄患者（年龄70-86岁,平均74.2岁）后腹腔镜的临床资料,其中有全身性伴发疾病77例,81例手术均在全麻下完成。结果气腹后35例（43.2%）发生高碳酸血症,35例（43.2%）发生酸中毒;41例（50.6%）出现不同程度的高血压。66例（81.5%）在手术室内拔除气管导管,手术结束至手术室内拔除气管插管时间5-50 min,平均15.1 min;1例（1.2%）带气管插管回本病房;14例（17.3%）术后转入ICU。1例（1.2%）术后第3天并发急性心肌梗死死亡。1例术后发生严重谵妄状态。结论高龄患者可耐受后腹腔镜手术高碳酸血症、酸中毒以及气腹后血压升高的风险,但围麻醉期的处理须谨慎。     

Two novel gastric cancer-associated genes identified by differential display

AIM To clone novel gastric cancer-associated genes and investigate their roles in gastric cancer occurrence.METHODS A method called differential display was used which allows the identification of differentially expressed genes by using PAGE to display PCR-amplified cDNA fragments between gastric cancer cells and normal gastric mucosa cells. These fragments were cloned into plasmid vector pUC18. Homology analysis was made after sequencing these fragments.RESULTS Two novel genes were identified compared with sequences from GenBank. One was registered with the AD number AF 051783. In situ hybridization showed that these two novel genes expressed specifically in gastric cancer tissues.CONCLUSION The two novel genes obtained by differential display were confirmed to be gastric cancer-associated genes using in situ hybridization.     

我国环卫设备的现状与发展趋势——环卫设备的标准化、系列化

介绍了我国环卫设备的发展现状,并提出了存在的一些问题.根据我国环卫产业政策的有关要求:论述了各种环卫设备研究和开发的方向,指出大力推进环卫机械设备的标准化、系列化、通用化、规模化是社会主义市场经济发展和环卫业发展的需要.     

Differences between conduct disordered and normal control children in their tendencies to escalate or neutralize conflicts when interacting with normal peers

The behavior of conduct disordered (CD) children was compared with normal control (NC) children in interaction with normal peers. Dyads consisting of a) a CD child and a normal peer and b) an NC child and the same normal peer as in a) were observed. CD boys were less able than NC boys to neutralize incipient conflicts. Hitherto most behavioral studies of CD boys have concentrated on their tendency to escalate conflicts but have paid very little attention to their difficulty in neutralizing conflicts.     

时滞系统鲁棒稳定性的新判据

基于Ｌｙａｐｎｕｏｖ泛函方法，研究了满足匹配条件的不确定性时滞系统的鲁棒稳定性及具有稳定度β〉０鲁棒稳定性，给出了已有结果不能推出的新判据。这些新判据对已有结果难以使用的情况下也可有是有效的，或有时减少了已有结果的保守性。