组织多普勒评价阵发性心房颤动患者环肺静脉左心房线性消融术后左心房功能变化

目的 利用组织多普勒超声评价阵发性心房颤动(房颤)患者环肺静脉左房线性消融术后左房功能的动态变化.方法 阵发性房颤患者108例,CARTO系统下行环肺静脉左房线性消融术,术前48 h及术后48 h、1个月、3个月、6个月分别行组织多普勒及常规超声心动图检查.结果 106例阵发性房颤患者成功施行环肺静脉左房线性消融术.与术前相比,左房前后径和左房容积减小,但术后48 h、1个月差异无统计学意义(P＞0.05),术后3个月和6个月差异有统计学意义(P＜0.05);左室舒张末内径、左室收缩末内径、左室射血分数差异无统计学意义(P＞0.05);二尖瓣舒张早期峰速差异无统计学意义(P＞0.05),二尖瓣舒张晚期峰速术后48 h较术前降低(P＜0.05),术后1个月、3个月、6个月逐渐增高,3个月时恢复到术前水平.与术前相比,二尖瓣环左室侧壁收缩期峰速、舒张早期峰速差异无统计学意义(P＞0.05),舒张晚期峰速术后48 h较术前降低(P＜0.05),术后1个月、3个月、6个月逐渐增高,1个月时恢复到术前水平.结论 环肺静脉左房线性消融术后左房内径和容积减小;环肺静脉左房线性消融术后可出现左房主动收缩功能降低(左房顿抑),经过一段时间可自行恢复.     

无左心房和肺静脉三维重建的阵发性心房颤动导管消融术

Objective To investigate the differences between modeling and non-modeling left atrium in Carto XP system guided catheter ablation for paroxysmal atrial fibrillation. Methods Thirty-one cases of par-oxysmal atrial fibrillation treated by the same electrophysiologist with guidance of Carto XP during Jan to Dec in 2008 were enrolled. Catheter ablation was accomplished without left atrium and pulmonary veins modeling in 17 patients (non-modeling group) and with left atrium modeling in 14 patients (modeling group). The detailed ablation method was based on circumferential pulmonary veins isolation (CPVI). And linear ablation of tricus-pid valvular isthmus was selectively proceeded individually. The ablation endpoint was set to complete isolation of pulmonary vein potential from left atrium and no continuous fast atrial arrhythmia including atrial fibrillation, atrial flutter and atrial tachycardia could be induced. Comparisons for each step during procedure and the fol-low-up outcomes had been done. Results The male: female ratio of the 2 groups were 10:4 and 11 : 6 (P >0.05). The average age were (54.64 ± 15.58) and (59.41 ± 10.59) (P >0.05) ,the diseased courses were (5.05 ±10.4) years and (7.34±7.74)years(P >0.05),the left atrial sizes were (35.29±4.73) mm and (36.47 ±6.15)mm (P > 0.05), the total procedure time was (107.23±28.92) rain and (93.47 ±26.09) win (P>0.05). The X-ray exposure time was (21.09 ±6.49)min (modeling group) and (14.16±5.35)min (non-modeling group,P < 0.05). The CPVI time of fight pulmonary veins was (27.29±18.53) rain (model-ing group) and 18.00 ±4.51 min (non-modeling group, P < 0.05). The CPVI time of left pulmonary veins was (28.14 ±9.26) rain (modeling group) and (23.94±7.10) rain (non-modeling group, P < 0.05). The successful rates was 85.7% (modeling group) and 82.4% (non-modeling group, P > 0.05) over follow-up for 2 to 13 months. Conclusion Carto system guided catheter ablation of paroxysmal atrial fibrillation without modeling of left atrium and pulmonary veins could take less time in X-ray exposure and ablation steps, compa-ring with left atrium modeling one.     

肌电图对神经肌炎诊断探讨

神经肌炎的诊断是一个很困难而又有争论的问题,不管是从电生理学、组织学上来证实其诊断都有一定困难。因此Ludin提出“神经肌炎”是临床的概念。我院发现四例肌肉活检具有肌炎的改变,周围神经活检又具有节段性脱髓鞘改变。而肌电图检查也发现既有肌源性肌电图改变,又有周围神经病变的表现。为了探讨神经肌电图对神经肌炎是否有其诊断意义举一典型病例报导。杨××,住院号291160,男,48岁,病程10个月。发病前有咽部不适及吞咽困难,     

CartoXP Guided Catheter Ablation for Paroxysmal Atrial Fibrillation Without Three-dimensional Modeling of Left Atrium and Pulmonary Veins

Objectives This study was to investigate the differences between modeling and non-modeling left atrium （LA） in CartoXP system guided catheter ablation for paroxysmal atrial fibrillation （PAF）. Methods From Jan to Dec in 2008 total 31 cases with PAF were enrolled. All were treated by the same electrophysiologist with CartoXP guidance. Catheter ablation was accomplished without left atrium and pulmonary veins modeling in 17 patients （non-modeling group） and with left atrium modeling in 14 patients （modeling group）. The detailed ablation method was based on circumferential pulmonary veins isolation （CPVI）. And linear ablation of tricuspid valvular isthmus was performed individually. The ablation endpoint was a complete isolation of pulmonary vein potential from left atrium and no further induced continuous fast atrial arrhythmia including atrial fibrillation （AF）, atrial flutter （AFL） and atrial tachycardia （AT）. Each step for the procedures and the follow-up outcomes were compared correspondingly. Results The total procedure time was 107.23 ± 28.92 min in modeling group vs 93.47 ±26.09 min in non-modeling group （ P 〉 0.05 ）. The X-ray exposure time was significantly longer in modeling group （21.09 ±6. 49 rain） than in non-modeling group （14. 16 ± 5.35 min）. The CPVI times of right pulmonary veins and left pulmonary veins were 28. 14 ± 9. 26 min was 27.29 ± 18.53 min in modeling group respectively, vs 18.00 ±4. 51 min and 23.94 ± 7. 10 min in non-modeling group respectively, （P 〈 0. 05 ）. There is no significant difference between modeling group （85.7%） and non-modeling group （82.4%） over follow-up period of 2 to 13 months. Confusions CartoXP system guided catheter ablation of PAF without modeling of left atrium and pulmonary veins took less time in X-ray exposure and ablation steps, comparing with left atrium modeling procedure.     

视觉诱发电位的数据处理与计算机辅助诊断的初步探讨

目前视觉诱发电位(Visual EvokedPotentials,VEP)的实验研究和临床诊断都只采用常规的时域分析方法。近几年来,应用计算机数据处理技术对诱发电位信号进行频域分析引起重视,但VEP频域分析的研究只有少量报道。Trick等对多发性硬化症患者的VEP作了功率谱分析,发现高频成分显著减少,时域和频域分析结合应用可使诊断率从61％提高到86％。Jutai等报道精神分裂症患者VEP的10-14Hz的频谱功率低于正常人。为了探讨VEP分析的新方法、临床诊断的新指标和提高诊断的正确率,我们从1986年6月开始,对VEP的数据处理与计算     

眨眼反射

61:30,1980(英文)] 眨眼反射从1969年Bender等研究以来,已成为基础和应用生理学研究的重要课题。它是多突触还是少突触反射,基础神经生理学的许多研究已作探测,并对其脑干突触联系的许多部分还作了研究。最近,应用神经生理学的许多研究促进了眨眼反射通过大脑半球的探究,本文加以文献综述。最后,     

环肺静脉射频消融治疗慢性心房颤动

4 背景 1994年Haisaguerre等首先报道了经导管消融治疗心房颤动。近几年来，随着对心房颤动发生和维持机制研究的深入，各种各样的心房颤动消融策略不断涌现出来并应用于临床，导管消融的适应证也从阵发性心房颤动扩展到所有类型的心房颤动。三维标测系统指导下的环肺静脉消融术（circumferential pulmonary-vein ablation，CPVA）是目前治疗持续性心房颤动的最常用术式，取得了较好的疗效。但患者术后常需要接受短期的抗心律失常药物治疗和一次或多次的电复律以恢复窦性心律，而且有无症状性心房颤动复发存在。这些混杂的因素可能会使手术疗效被高估。     

双心室同步起搏治疗难治性心力衰竭的疗效

目的 探讨心脏同步化治疗（CRT）对于难治性慢性心力衰竭的效果。方法 30例顽固性心力衰竭患者，NYHA分级为Ⅲ～Ⅳ级，采用心电图观察QRS时限、超声心动图计算LVEF，组织多普勒超声彩色心动图了解心室壁同步的情况；6min步行距离测量心脏的负荷能力的变化。结果 （1）双心室起搏[（167±24）ms]和起搏前[（182±39）ms]、右心室起搏[（220±31）ms]、左心室起搏[（210±38）ms]比较QRS时限明显缩短（P〈0．05）。（2）心功能分级（NYHA）：术前Ⅲ～Ⅳ级，术后1周Ⅰ～Ⅱ级，术后1个月直至随访时仍旧Ⅰ～Ⅱ级。（3）LVEF：术后1周[（38．80±3．88）％]和术前[（27．30±28．94）％]比较明显提高（P〈0．05），随访时[（39．65±6．75）％]和术前比较明显提高（P〈0．05）。（4）6min步行距离：术后1周[（479±123）m]和术前[（388±165）m]比较有明显提高（P〈0．05）。结论 CRT短期可以减轻难治性心力衰竭患者的症状，增加其运动能力，改善心脏功能。     

AMI梗死相关血管与氮末端脑钠素前体水平的相关性研究

目的探讨急性心肌梗死（AMI）患者梗死相关血管与氮末端脑钠素前体（NT-proB-NP）的相关性。方法入选诊断明确的因AMI行急诊经皮冠状动脉介入治疗术患者共计112例,其中男性91例,女性21例。根据选择性冠状动脉造影影像学特征结合心电图诊断的AMI部位来确定梗死相关血管。所有患者入院后均行血浆NT-proBNP检测及经胸超声心动图等检查,分析其与梗死相关血管的相关性。结果梗死相关血管为前降支的患者NT-proBNP水平要明显高于梗死相关血管为回旋支或右冠状动脉患者,其差异有显著统计学意义（2069.071817.68versus969.91569.83or1164.811075.79pg/ml,P=0.004）。结论血浆NT-proBNP水平与AMI患者的梗死相关血管有关,NT-proBNP能反映心肌急性缺血损伤的程度及病情轻重。