Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Electron Microscope Tomography and Single-particle Reconstruction01:07

Electron Microscope Tomography and Single-particle Reconstruction

2.1K
Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
2.1K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Three-dimensional electroanatomical mapping guidelines for the selection of pacing site to achieve cardiac resynchronization therapy.

Frontiers in cardiovascular medicine·2022
Same author

Left univentricular pacing for cardiac resynchronization therapy using rate-adaptive atrioventricular delay.

Journal of geriatric cardiology : JGC·2017
Same author

Cardiac resynchronization therapy (CRT) with right ventricular sense triggered left ventricular pacing benefits for the hemodynamics compared with standard CRT for chronic congestive heart failure: A cross-over study.

Cardiology journal·2014
Same author

[Characteristics of soil respiration in Phyllostachys edulis forest in Wanmulin Natural Reserve and related affecting factors].

Ying yong sheng tai xue bao = The journal of applied ecology·2011
Same author

Global effect of an RNA polymerase β-subunit mutation on gene expression in the radiation-resistant bacterium Deinococcus radiodurans.

Science China. Life sciences·2011
Same author

Sublethal effects of pesticide mixtures on selected biomarkers of Carassius auratus.

Environmental toxicology and pharmacology·2011

相关实验视频

Updated: May 5, 2026

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
12:45

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing

Published on: December 11, 2017

10.5K

从高密度电解剖学映射重新定义左束分支块.

Jun-Hua Zou1, Bao-Tong Hua2, Xiao-Xia Shao2

  • 1The first Department of Cardiology, the First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.

International journal of cardiology
|February 6, 2024
PubMed
概括

现有的心电图 (ECG) 标准对于左束分支块 (LBBB) 缺乏准确性. 测量隙宽度与左心室直径比率 (Nw/LVd) 可以更好地诊断真正的LBBB.

关键词:
心脏再同步疗法 (CRT) 是一种心脏再同步疗法.高密度的三维电解剖学绘图.左捆分支区块 (LBBB) 是一个分支区块.

更多相关视频

Ablation of Ischemic Ventricular Tachycardia Using a Multipolar Catheter and 3-dimensional Mapping System for High-density Electro-anatomical Reconstruction
06:57

Ablation of Ischemic Ventricular Tachycardia Using a Multipolar Catheter and 3-dimensional Mapping System for High-density Electro-anatomical Reconstruction

Published on: January 31, 2019

14.7K
Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System
10:17

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System

Published on: April 11, 2025

575

相关实验视频

Last Updated: May 5, 2026

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
12:45

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing

Published on: December 11, 2017

10.5K
Ablation of Ischemic Ventricular Tachycardia Using a Multipolar Catheter and 3-dimensional Mapping System for High-density Electro-anatomical Reconstruction
06:57

Ablation of Ischemic Ventricular Tachycardia Using a Multipolar Catheter and 3-dimensional Mapping System for High-density Electro-anatomical Reconstruction

Published on: January 31, 2019

14.7K
Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System
10:17

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System

Published on: April 11, 2025

575

科学领域:

  • 心脏病学 心脏病学
  • 电子生理学 电子生理学
  • 医学诊断 医学诊断 医学诊断

背景情况:

  • 目前用于诊断左束分支阻塞 (LBBB) 的心电图 (ECG) 标准不足以准确区分真假阻塞.
  • 区分真正的LBBB和LBBB类模式对于适当的患者管理和治疗至关重要,特别是在心脏再同步治疗 (CRT) 候选人中.

研究的目的:

  • 为了研究QRS隙宽度在横向导线中的实用性,作为真正完整的左捆分支块 (t-LBBB) 的补充诊断标记.
  • 评估隙宽度与左心室末端透气直径 (Nw/LVd) 的比率在区分t-LBBB与虚假LBBB (f-LBBB) 的诊断性能.

主要方法:

  • 在37名CRT患者中使用高密度的3D电解剖绘图,具有LBBB类心电图.
  • 定义t-LBBB和f-LBBB基于从底部到顶部的左束分支潜力的存在或不存在.
  • 在t-LBBB和f-LBBB组之间比较了临床特征,电刺激分布,QRS隙宽度和Nw/LVd比率.
  • 进行了ROC分析,以确定Nw/LVd的敏感性和特异性,以诊断t-LBBB.

主要成果:

  • 25名患者被归类为t-LBBB,12名患者被归类为f-LBBB.
  • 在t-LBBB和f-LBBB组之间观察到QRS隙脱极化的明显模式.
  • Nw/LVd比率显示了两组之间具有统计学意义的差异 (0.65±0.19毫秒/毫米对比0.81±0.17毫秒/毫米,P<0.05).
  • 在ROC分析中,使用Nw/LVd比率诊断t-LBBB的灵敏度为56%,特异性为91.7%.

结论:

  • Nw/LVd比作为一个有价值的定量标记,以提高LBBB的诊断准确度.
  • 将Nw/LVd测量纳入现有的心电图标准可以更好地识别真正的LBBB.