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相关概念视频

Conduction System of the Heart01:19

Conduction System of the Heart

5.7K
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...
5.7K
Electrophysiology of Normal Cardiac Rhythm01:19

Electrophysiology of Normal Cardiac Rhythm

3.2K
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...
783
Node Analysis for AC Circuits01:14

Node Analysis for AC Circuits

316
Consider an angioplasty system featuring a catheter equipped with a turbine, a critical tool for removing plaque deposits from coronary arteries. This intricate medical device operates using a circuit model reminiscent of a dual-node RLC circuit powered by a current-controlled voltage source.
To unravel the complexities of this system, nodal analysis is employed, a powerful technique founded on Kirchhoff's current law (KCL), which remains valid for phasors. AC circuits can effectively be...
316
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
ECG Interpretation of Arrhythmias I: Sinus Arrhythmias01:16

ECG Interpretation of Arrhythmias I: Sinus Arrhythmias

209
Arrhythmias are disturbances in the heart's rhythm that lead to abnormal heartbeats. These irregularities can originate from different parts of the heart and are classified based on their origin and nature.
Types of Arrhythmias
Sinus Node Arrhythmias
Sinus Bradycardia: Originating from the sinoatrial (SA) node, sinus bradycardia involves slower impulses, resulting in a heart rate of less than 60 beats per minute (bpm). Causes include sleep, vagal stimulation, beta-blockers, hypothyroidism,...
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相关实验视频

Updated: Jun 23, 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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导电系统节奏是心脏起器治疗的万能药吗?

Stephe Kamalathasan1,2, Maria Paton1,2, John Gierula2

  • 1Cardiology Department, Leeds Teaching Hospitals NHS Trust, Leeds, UK.

Expert review of medical devices
|June 24, 2024
PubMed
概括

导电系统节奏提供了一个比传统节奏更生理的替代方案,用于心和心力衰竭. 这种方法旨在克服当前治疗方法的局限性,并有可能改善患者的治疗结果.

关键词:
导电系统的节奏调节他的捆绑节奏节奏.胸肌梗塞是什么意思 胸肌梗塞是什么意思心脏重同步的心脏重同步心脏衰竭是因为心脏衰竭.左捆分支机构地区节奏节奏.治疗疗法治疗疗法治疗疗法

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科学领域:

  • 心脏病学 心脏病学
  • 电子生理学 电子生理学
  • 医疗器械 医疗器械

背景情况:

  • 右心室角节奏对于胸心风险的左心室功能障碍.
  • 心脏再同步治疗由于解剖学约束而面临限制.
  • 导电系统节奏提供了一个生理学上的替代方案.

研究的目的:

  • 审查传导系统节奏的当前有效性和安全性数据.
  • 讨论在临床实践中潜在的未来角色.
  • 评估导电系统节奏是否存在导电延迟的白心脏和心力衰竭.

主要方法:

  • 审查当前的科学文献和临床数据.
  • 导电系统节奏的有效性和安全性的分析.
  • 与传统节奏和双心室治疗的比较.

主要成果:

  • 导电系统的节奏显示出一种更生理性的电导模式.
  • 它正在成为心节律调节的首选选择.
  • 作为心力衰竭中双心室节奏的替代品,获得动力.

结论:

  • 导电系统步调显示出克服当前步调方法的局限性的承诺.
  • 需要可靠的数据来证实同等或更高的疗效和安全性.
  • 有潜力成为常规临床实践中首选的方法.