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

Disturbances in Heart Rhythm01:28

Disturbances in Heart Rhythm

945
Arrhythmia or dysrhythmia refers to an abnormal heart rhythm caused by a defect in the heart's conduction system. It can cause the heart to beat irregularly, too quickly, or too slowly, leading to symptoms like chest pain, shortness of breath, and fainting. Factors such as stress, caffeine, alcohol, nicotine, cocaine, certain drugs, congenital defects, diseases, and electrolyte abnormalities can trigger arrhythmias.
Arrhythmias are categorized by their speed, rhythm, and origin. A slow...
945
Mechanism of Cardiac Arrhythmias01:28

Mechanism of Cardiac Arrhythmias

917
Arrhythmias are irregular heart rhythms occurring when the heart's electrical impulses become abnormal. These disturbances can lead to various symptoms, depending on their severity and the underlying cause. Some common factors contributing to arrhythmias include hypoxia, ischemia, electrolyte imbalances, excessive catecholamine exposure, drug toxicity, and muscle overstretching. Arrhythmias can be classified into two main types based on the rate and site of origin of abnormal heart rhythms.
917
Conduction System of the Heart01:20

Conduction System of the Heart

982
The cardiac conduction system produces and transmits electrical impulses that prompt myocardial contraction, ensuring efficient heart function. This intricate system ensures that the heart beats in a coordinated and efficient manner, beginning with the atria and then the ventricles. The conduction system optimizes cardiac output by maintaining this precise sequence, which is crucial for adequate blood circulation.
This system relies on the unique properties of nodal and Purkinje cells:...
982
Electrophysiology of Normal Cardiac Rhythm01:19

Electrophysiology of Normal Cardiac Rhythm

3.7K
The normal cardiac rhythm is a synchronized electrical activity that facilitates the regular and coordinated contraction of the heart muscle. This process is essential for efficient blood circulation throughout the body. The fundamental elements involved in establishing and maintaining this rhythm include the unique electrical properties of cardiac muscle cells, the sinoatrial (SA) node's pacemaker function, the specialized conducting system, and the ionic mechanisms underlying each phase...
3.7K
Cardiac Action Potential01:30

Cardiac Action Potential

1.3K
Cardiac action potentials are essential for proper heart function, enabling the rhythmic contractions needed for adequate blood circulation. Nodal cells and Purkinje fibers, specialized for electrical conduction, generate these action potentials.
The cardiac action potential process involves a series of phases characterized by the movement of ions across the cardiac cell membranes, leading to the depolarization and repolarization of the cardiac myocytes.
Ionic Basis of Cardiac Action Potentials
1.3K
Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

1.6K
Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
1.6K

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

Mapping of incisional reentrant tachycardia: Lessons learned.

Indian pacing and electrophysiology journal·2026
Same author

Oxygen Consumption and Oxygen Pulse Patterns in Two Pediatric Patients With Pulmonary Hypertension and Different Clinical Responses: A Case Report.

Case reports in pediatrics·2026
Same author

Evaluation of a training program for rheumatic heart disease screening integrated into the public health system in Uganda.

PloS one·2026
Same author

Cardiac MRI Diagnosis of Large Aortopulmonary Collateral and Pulmonary Sequestration Presenting as Left Chamber Dilation.

CJC pediatric and congenital heart disease·2026
Same author

Delivering Rheumatic Heart Disease Diagnosis at Scale: Performance of an Integrated Public Health Screening Program in Northern Uganda.

Journal of the American Heart Association·2026
Same author

Outcomes of Patients With Arrhythmia During Single-Ventricle Palliation.

Pacing and clinical electrophysiology : PACE·2025

相关实验视频

Updated: Jun 27, 2025

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

双心室反应与异常导电导致心室功能障碍.

Paul W Warren1, Adam W Powell1,2, Timothy Knilans1,2

  • 1The Heart Institute, Cincinnati Children's Hospital Medical Center, 3333 Burnett Ave., MLC 2003, Cincinnati, OH, 45229-3026, USA.

Pediatric cardiology
|May 6, 2024
PubMed
概括
此摘要是机器生成的。

双心室反应 (DVR) 是一种罕见的心律,即使没有心跳快,也可能导致青少年的左心室功能障碍. 成功的治疗包括修改缓慢的途径,减少异常的心跳,恢复正常的心脏功能.

关键词:
房结节重新进入高心率双心室反应反应 双心室反应双 AV节点生理学 双 AV节点生理学双心房结节非复发性心力衰竭.双心室结节生理学 双心室结节生理学左心室功能障碍是什么

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
Induction of Right Ventricular Failure by Pulmonary Artery Constriction and Evaluation of Right Ventricular Function in Mice
09:40

Induction of Right Ventricular Failure by Pulmonary Artery Constriction and Evaluation of Right Ventricular Function in Mice

Published on: May 13, 2019

10.5K

相关实验视频

Last Updated: Jun 27, 2025

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
Induction of Right Ventricular Failure by Pulmonary Artery Constriction and Evaluation of Right Ventricular Function in Mice
09:40

Induction of Right Ventricular Failure by Pulmonary Artery Constriction and Evaluation of Right Ventricular Function in Mice

Published on: May 13, 2019

10.5K

科学领域:

  • 心脏病学 心脏病学
  • 电子生理学 电子生理学
  • 儿科医学 儿科医学

背景情况:

  • 双心室反应 (DVR) 是双心室 (AV) 节点生理学的罕见表现.
  • 视频录像机通常与不间断的高心率和随后的心室功能障碍有关.

研究的目的:

  • 介绍一个儿科患者的病例,频繁的DVR,没有不断的心动减速,导致左心室功能障碍.
  • 评估缓慢路径修改在管理DVR诱导的心室功能障碍中的有效性.

主要方法:

  • 一个青少年患者的病例报告,出现频繁的DVR和左心室功能障碍.
  • 电生理学研究和成功的缓慢路径修改程序.

主要成果:

  • 患者经历了频繁的DVR,没有相关的高心率,导致显著的左心室功能障碍.
  • 经过缓慢的路径修改后,异位症显著减少,左心室功能正常化.

结论:

  • 视频录像机,即使没有心动减速,也可以在儿科患者中加速心室功能障碍.
  • 在这种情况下,缓慢路径修改是一种潜在的有效策略,可以减少异位症并恢复心脏功能.