立即登录 | 免费注册
全部学科 | 内科学 | 心血管病学 | 内分泌学与糖尿病 | 神经病学 | 消化病学 | 呼吸病学 | 肿瘤学 | 妇产科学 | 骨科学
疾病中心： 高血压 | 冠心病 | 心力衰竭 | 心律失常 | 脂肪性肝病 | 糖尿病 | 卒中 | 慢性阻塞性肺病 | 子宫内膜异位症 | 乳腺癌 | 肺癌 | 结直肠癌 | 器官移植
Loading
当前位置：期刊中心 > 中国作者重要发表 > 文摘导读

定量分析心肌梗死后室性心动过速折返环内传导减慢的持续时间

Quantitative analysis of the duration of slow conduction in the reentrant circuit of ventricular tachycardia after myocardial infarction
Li Y.-G., Wang Q.-S., Israel C.W., Gronefeld G., Lu S.-B., Ehrlich J.R., Hohnloser S.H.   |   2009/5/29 18:39:58 
Journal of Cardiovascular Electrophysiology, 2008   |   Volume 19, Issue 9  |   打印| 推荐给好友
上一篇: 一种新的移植动脉抗痉挛方法：尼卡地平和硝酸甘油联合应用于冠状动脉手术中胸廓内动脉和桡动脉的准备
下一篇: 心房复杂碎裂电图的自主机制：快速Fourier变换分析的证据
Quantitative Analysis of the Reentrant Circuit of Ventricular Tachycardia. Background: Few data are available to define the circuits in ventricular tachycardia (VT) after myocardial infarction and the conduction time (CT) through the zone of slow conduction (SCZ). This study assessed the CT of the SCZ and identified different reentrant circuits. Methods: During VTs, concealed entrainment (CE) was attempted. The SCZ was identified by a difference between postpacing interval (PPI) and VT cycle length (VTcl) ≤30 ms. Since the CT in the normally conducting part of the VT circuit is constant during VT and CE, a CE site within the reentrant circuit with (S-QRS)/PPI ≥ 50% was classified as an inner reentry in which the entire circuit was within the scar, and a CE site with (S-QRS)/PPI < 50% as a common reentry in which part of the circuit was within the scar and part out of the scar. Results: CE was achieved in 20 VTs (12 patients). Six VTs (30%) with a (S-QRS)/PPI ≥50% were classified as inner reentry and 14 VTs (70%) with a (S-QRS)/PPI <50% during CE mapping as common reentry. The EG-QRS interval (308 ± 73 ms vs 109 ± 59 ms, P < 0.0001) was significantly longer and the incidence of systolic potentials higher (4/6 vs 0/12, P < 0.001) in the inner reentry group. For the 14 VTs with a common reetry, the CT of the SCZ was 348 ± 73 ms, while the CT in the normal area was 135 ± 50 ms. Conclusion: According to the proposed classification, 30% of VTs after myocardial infarction had an entire reentrant circuit within the scar. In VTs with a common reentrant circuit, the CT of the SCZ is approximately four times longer than the CT in the normal area, accounting for more than 70% of VTcl. © 2008 Wiley Periodicals, Inc.
Correspondence Address: Li, Y.-G.; Department of Cardiology, Xinhua Hospital, Shanghai Jiao Tong University, 200092 Shanghai, China; email: drliyigang@yahoo.com.cn 
关键词:

请登录后发表评论，点击此处登录。

慢性心衰诊治：规范中求突破
黄峻
2012-2-1
南京医科大学第一附属医院
房颤治疗：手段渐趋丰富 新型治疗药物不断涌现 非药物治疗备受关注
马长生
2012-2-1
首都医科大学附属北京安贞医院
注重老年人群特征 优化管理

刘梅林
2012-2-1
北京大学第一医院老年内科

 
相关文章

关注糖尿病，聚焦GLP-1！案例征集大赛
时间：2011-3~~2011-11
由中国医师协会主办、礼来国际贸易（上海）有限公司协办、爱思唯尔国际出版集团承办的“精彩案例我分享——关注糖尿病•聚焦GLP-1”案例征集活动将于2011年3月~ 11月在全国范围隆重展开。

关注青光眼患者， 让世界更明亮！
时间：2011-4~~2011-12
《中华眼科杂志》发起，辉瑞制药资助，旨在交流青光眼治疗理念，分享国内抗青光眼药物固定联合治疗经验的病例交流活动.

聚焦哮喘和COPD联合制剂治疗
时间：2010-12~~2011-12
哮喘和慢性阻塞性肺疾病（COPD）是常见、多发的气道炎症性疾病，这类疾病严重影响患者的生活质量。我们特别组织了该类案例征集活动，奖品丰厚，快来参与！

中国选择 达标看我
时间：2011-9~~2012-9
本次活动对典型病例以分享的形式总结临床经验，通过跨专科、多层次的学术交流，对降压治疗方案、疗效进行解析与点评。