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相关概念视频

Conduction System of the Heart01:19

Conduction System of the Heart

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Autorhythmicity is a term that refers to the heart's inherent ability to generate electrical signals and instigate muscle contractions. This self-regulating conduction system within the heart consists of two key components: the pacemaker cells and specialized conducting cells.
The pacemaker cells are located in two primary nodes: the sinoatrial (SA) node and the atrioventricular (AV) node. The SA node pacemaker cells can autonomously depolarize, triggering an action potential that leads to the...
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Electrophysiology of Normal Cardiac Rhythm01:19

Electrophysiology of Normal Cardiac Rhythm

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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...
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Pulse rhythm01:30

Pulse rhythm

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Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
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Disturbances in Heart Rhythm01:28

Disturbances in Heart Rhythm

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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...
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The Cardiac Cycle01:13

The Cardiac Cycle

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The heart beats rhythmically in a sequence called the cardiac cycle—a rapid coordination of contraction (systole) and relaxation (diastole).
The Process
Electrical signals—sent from the sinoatrial (SA) node in the right atrial wall to the atrioventricular (AV) node between the right atrium and right ventricle—cause both atria to simultaneously contract. When the signal reaches the AV node, it pauses for approximately a tenth of a second, allowing the atria to contract and...
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Mechanism of Cardiac Arrhythmias01:28

Mechanism of Cardiac Arrhythmias

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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.
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相关实验视频

Updated: Jul 10, 2025

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

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导电系统步调用于心脏再同步治疗心脏再同步治疗

Óscar Cano1,2,3, Javier Navarrete-Navarro1,3, Pablo Jover1,3

  • 1Electrophysiology Section, Cardiology Department, Hospital Universitari i Politècnic La Fe, Área de Enfermedades Cardiovasculares, Planta 4-Torre F. Av, Fernando Abril Martorell, 106, 46026 Valencia, Spain.

Journal of cardiovascular development and disease
|November 24, 2023
PubMed
概括

新的节奏方法,他的捆绑节奏 (HBP) 和左捆绑分支区域节奏 (LBBAP),为心力衰竭患者提供了改进的心脏再同步治疗 (CRT). 这些传导系统节奏 (CSP) 技术旨在提高CRT响应率,而不是传统的双心室节奏.

关键词:
他的捆绑节奏节奏.心脏再同步治疗心脏再同步治疗导电系统的节奏节奏.左捆的分支节奏节奏,分支节奏.

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Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System
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科学领域:

  • 心脏病学 心脏病学
  • 电力生理学 电力生理学
  • 医疗器械 医疗器械

背景情况:

  • 使用双心室节拍 (BiVP-CRT) 的心脏再同步疗法 (CRT) 是心力衰竭的标准治疗方法,其排气分数减少,QRS宽.
  • 很大一部分患者 (高达三分之一) 对BiVP-CRT没有充分的反应.

研究的目的:

  • 审查目前的进展,局限性和未来的前景,传导系统步调 (CSP) 的CRT.
  • 探索他的捆绑节奏 (HBP) 和左捆绑分支区域节奏 (LBBAP) 作为传统CRT的生理替代方案.

主要方法:

  • 关于传导系统步调 (CSP) 技术的当前文献的审查,包括他的捆绑步调 (HBP) 和左捆绑分支区域步调 (LBBAP).
  • 分析CSP旨在恢复本源心室电激活的机制.
  • 对CSP用于CRT交付的安全性和可行性的评估.

主要成果:

  • 传导系统步调 (CSP),包括HBP和LBBAP,是CRT的一个有希望的方法.
  • 这些技术旨在通过本地导电系统恢复生理性心室激活来实现CRT.
  • 在CRT的背景下,CSP已经证明了安全性和可行性.

结论:

  • 导电系统节奏 (CSP) 与传统的双心室节奏相比,为CRT输送提供了一个潜在的更有效的替代方案.
  • HBP和LBBAP是新兴的生理节奏模式,可以提高CRT响应率.
  • 进一步的研究是有必要的,以充分阐明长期的好处,并优化CSP的CRT的应用.