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相关概念视频

Overview of the Heart01:07

Overview of the Heart

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The heart, a muscular organ located in the chest, functions as the body's pump, circulating blood through the vascular system. It has four chambers: two atria on top and two ventricles below. The right atrium receives deoxygenated blood from the body and passes it to the right ventricle, which pumps it to the lungs for oxygenation. The left atrium receives oxygenated blood from the lungs and transfers it to the left ventricle, which pumps it to the rest of the body.
The heart's...
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Chambers of the Heart01:16

Chambers of the Heart

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The human heart is a complex organ made up of four chambers: the right and left atria and the right and left ventricles. These internal chambers are separated by partitions known as the interatrial and interventricular septa. The exterior of the heart features a groove known as the coronary sulcus that demarcates the atria from the ventricles, while the anterior and posterior interventricular sulci distinguish between the two ventricles.
Deoxygenated blood from the body is received in the right...
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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...
1.0K
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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ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias01:25

ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias

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Arrhythmia is a condition characterized by an irregular heart rhythm, with ECG changes that differ based on its origin and nature. The types of arrhythmias discussed below include atrial, junctional, and ventricular arrhythmias.Atrial ArrhythmiasPremature Atrial Complexes (PACs): PACs are early atrial beats caused by stress, caffeine, alcohol, electrolyte imbalances, hypoxia, hyperthyroidism, or certain medications (e.g., bronchodilators and decongestants). The ECG shows early P waves with an...
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Conduction System of the Heart01:20

Conduction System of the Heart

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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:...
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Robotic Ablation of Atrial Fibrillation
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在为心房动进行电动心转变后,右心脏结构和功能.

Xiaohan Yan1, Pascal B Meyre1,2, Stefanie Aeschbacher1,2

  • 1Division of Cardiology, University Hospital and University of Basel, Basel, Switzerland.

Cardiology
|June 27, 2023
PubMed
概括

电动心脏转换 (ECV) 在心房动 (AF) 患者中改善了右心室 (RV) 功能. 在恢复鼻节律后,RV功能表现出立即和持续的改善,TAPSE和FAC的显著增长.

关键词:
心房动是一种心房动.心脏转变是一种心脏转变.心声回声扫描 (Echocardiography) 是一种心声回声扫描.右心室功能的功能慢心跳引起的心肌病变性心脏病.

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科学领域:

  • 心脏病学 心脏病学
  • 心脏电生理学 心脏电生理学
  • 心声回声扫描 (Echocardiography) 是一种心声回声扫描.

背景情况:

  • 心房动 (AF) 对右心脏结构和功能产生负面影响.
  • 有限的数据存在于右心室 (RV) 和右心房 (RA) 改变后电心转变 (ECV).
  • 了解ECV对右心室的直接和短期影响至关重要.

研究的目的:

  • 评估持续性AF患者在ECV后右心室尺寸和RV功能的即时和短期变化.
  • 评估心率和心律状态对这些变化的影响.
  • 调查节奏恢复与RV/RA重塑之间的关联.

主要方法:

  • 在64名AF患者中,用于测量右心尺寸和RV功能.
  • 测量是在1 - 2小时前,立即之后和4 - 6周后进行的.
  • 线性回归模型分析了心脏测量和随访节律状态之间的关联.

主要成果:

  • 在ECV后维持鼻节律的患者中 (n=48),RV功能显著改善 (p<0.01) 分数面积变化 (FAC) 和三 annular 平面缩外流 (TAPSE).
  • 在ECV后4-6周,RV末缩面积和RA体积指数显著下降 (p<0.01).
  • 改善的TAPSE和FAC与持续的鼻节律相关 (分别为p=0.027和p=0.053).

结论:

  • 电动心脏转换改善了AF患者的RV功能,这些患者实现了鼻腔节律.
  • RV功能在ECV后立即改善,在4-6周后进一步改善.
  • 持续的鼻节律与ECV后改善的RV缩功能有关.