The Presence of Giant Epsilon Waves in a Patient with Arrhythmogenic Right Ventricular Cardiomyopathy

Epsilon wave, which is a major diagnosis criterion for arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVD/C), is defined as small amplitude potentials. The present case is a 49‐year‐old man with a history of syncope and palpitations for 6 months. The ECG documented ventricular tachycardia (VT) when the patient has palpitations. However, there has been a giant epsilon wave in sinus rhythm. Electroanatomic mapping also has a prominent double potential identified on ABL catheter. The amplitude of epsilon wave reached 0.9 mV, which might be the maximum epsilon wave until now.     

陈旧性与新鲜性压缩骨折行椎体成形术的临床对比研究

【摘要】 目的 回顾性对比研究陈旧性与新鲜性椎体压缩性骨折行经经皮椎体成形术(percutaneouss vertebra plasty,PVP)后的临床效果。 方法 对24例老年骨质疏松性胸腰椎压缩性骨折患者行PVP治疗,将研究对象按陈旧性骨折和新鲜性骨折分为2组,分别拍摄2组术前、术后标准正侧位X线片,从而对骨折椎体高度的恢复、后凸畸形的矫正及疼痛视觉模拟量表（visual analogue scale, VAS）评分进行研究对比。 结果 所有患者术后平均随访6个月,无严重并发症发生。2组患者术后疼痛缓解且恢复良好,均恢复日常活动能力。但陈旧性压缩性骨折患者术后椎体高度恢复和后凸畸形的矫正程度均不如新鲜性骨折患者。 结论 PVP术操作简单、创伤小,对于骨质疏松性椎体压缩性骨折的治疗效果明显,尤其对新鲜骨折效果显著,且对于缓解陈旧性骨折疼痛症状也有良好效果。     

He—Ne激光治疗大白鼠实验性甲状腺功能亢进的组织形态学观察

本文报道了我们给Ｗｉｓｔｅｒ大鼠服用复方碘溶液，促使其产生甲状腺功能亢进症状，然后用Ｈｅ－Ｎｅ激光对病灶局部进行照射治疗；同时用甲亢大鼠未照激光组、正常大鼠照射激光组作对照，分别于治疗后的３、１０、２０天处死，观察其组织学变化，研究结果发现，在适量Ｈｅ－Ｎｅ激光的作用下，使甲状腺分泌激素的功能得到调节，甲亢被控制。     

Restoration of myoelectrical propagation across a jejunal transection using microsurgical anastomosis

The aim of this study was to determine whether microsurgical anastomosis can restore propagation of jejunal pacesetter potentials (PPs) across a site of canine jejunal transection and preserve motility and transit in bowel distal to the transection. A complete jejunal transection with exact microsurgical anastomosis was performed in five dogs, while five dogs with intact jejunum and five dogs with complete transection and end-to-end conventional macrosurgical anastomosis were used as controls. Long-term recording electrodes and intraluminal, open-tipped pressure catheters were implanted in all dogs. The mean frequency of PPs decreased distal to the transection in both groups of transected dogs. However, aborad propagation of PPs across the anastomosis occurred episodically by 3 months in each dog that had a microsurgical anastomosis, but never occurred in any dog with a conventional macroanastomosis. Moreover, the motility and transit in bowel distal to the transection were unaltered in the dogs with a microsurgical anastomosis, whereas they decreased in the dogs with a macroanastomosis. The conclusion was that microsurgical anastomosis of transected canine jejunum restored episodic propagation of PPs across the anastomosis, and preserved motility and maintained transit in bowel distal to the anastomosis. The conventional macroanastomosis did none of these. Supported by the Mayo Foundation and the Nigrn Grant. Presented in part at the Thirty-Seventh Annual Meeting of The Society for Surgery of the Alimentary Tract, May 19–22, 1996, San Francisco, Calif.     

退变椎体周边关节软骨产生碱性磷酸酶与骨赘形成的关系

目的：研究椎体骨赘形成的机理。方法：通过切除免颈棘上韧带及棘间和分离颈椎后旁两侧肌肉引起动物颈椎力学上的失衡,经３个月的时间的发展而造成免颈椎间盘退变模型。用生物化学方法分别测定每个动物颈椎间盘纤维环和髓核、椎体关系软骨、周边关节软碱性磷酸酶性结果：颈椎间盘退变动物椎体周边关节软骨中碱性磷酸酶活性明显升高。结论：研究结果在生物化学上支持椎体骨赘来自于周边关节软骨增殖、化生、钙化和骨化的组织学观察。     

退变颈椎间盘中胶原酶活性变化

目的 研究退变颈椎间盘中的胶原酶的活性变化。方法 通过切除实验动物颈棘上、棘间韧带及分离颈椎旁两侧肌肉,造成颈椎力学上的失衡而诱导了兔的颈椎间盘退行性变化。在术后３月和８月时分别处死３月组动物和８月组动物,取动物颈椎间盘组织,用生物化学方法测定其中胶原酶活性。结果 研究表明：（１）３月组实验组动物颈椎间盘中胶原酶活性明显高于３月对照组动物。（２）８月实验组动物颈椎间盘中胶原酶活性明显高于８月对照组     

局部复方低温液灌洗治疗脊髓损伤的实验与临床研究

目的探索低温、低温程度及时间和药物配方对脊髓损伤的作用。方法用Ａｌｅｎ法致伤家兔成截瘫模型，观察比较早期低温灌洗组与对照组在运动能力、局部光电镜下的病理变化。结果低温灌洗对损伤之脊髓有良好保护作用，临床应用结果与动物实验相符。结论复方低温液对脊髓损伤有确切的保护作用，低温以２～４℃为宜，低温时间以２０分钟为宜     

计算机模拟与检测离体猪肝植入式微波辐射热场

目的 :探讨计算机模拟超声引导下植入式微波辐射热场在离体猪肝中的可行性。材料和方法 :对临床常用的能量输出条件下微波热凝固的范围和温度分布进行了计算机模拟和检测。通过实验得到了离体猪肝的模拟参数 ,建立了离体猪肝的计算机模拟热场图 ;在 2 6个猪肝上进行了 496个点次的测温以验证模拟热场的准确性。结果 :微波辐射时离体猪肝温升曲线与计算机模拟温度曲线有很好的一致性的占 88.91% ,猪肝凝固边界温度与计算机模拟的 5 4℃所对应的边界有较好的吻合性。结论 :用计算机模拟离体猪肝微波热场是准确的 ,该方法的确立为计算机模拟活体组织的研究奠定了基础     

抗+Gx作用呼吸动作和训练方法的研究

目的探讨对抗 +Gx作用的呼吸动作及其训练方法。方法 7名男性青年被试者接受了抗 +Gx呼吸动作训练 ,并于训练前、后分别在离心机上做 +Gx耐力检查 ,检查中实时监测呼吸方式、呼吸频率、心电图、心率、动脉氧饱和度 (SaO2 )及主观呼吸感觉和视觉等指标的变化。结果与训前比 ,训后被试者的 +Gx耐力明显提高 (P <0 .0 5 ) ,在与训前同样G值的作用中呼吸困难及胸痛消失或明显减轻 ,SaO2 的降低幅度明显减小 (P <0 .0 5 )。结论本实验出的呼吸方法能有效地消除或缓解 +Gx引起的呼吸困难和胸痛 ,并可提高人的 +Gx耐力。