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関連する概念動画

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

925
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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Dysrhythmias VI: Management of Dysrhythmias01:25

Dysrhythmias VI: Management of Dysrhythmias

106
Dysrhythmia management involves a multifaceted approach, incorporating pharmacological treatments, medical procedures, surgical interventions, lifestyle modifications, and patient education.Pharmacological ManagementAntiarrhythmic Drugs:Class I (Sodium Channel Blockers): This class includes quinidine and procainamide, which reduce the speed of impulse conduction in the heart, stabilize the cardiac membrane, and control arrhythmias. Quinidine and procainamide are Class IA agents that prolong the...
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Cardiopulmonary Resuscitation IV: Pharmacological Management01:25

Cardiopulmonary Resuscitation IV: Pharmacological Management

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Pharmacologic intervention is crucial in treating cardiac arrest patients during ACLS or Advanced Cardiovascular Life Support. The ACLS algorithms guide the administration of specific drugs based on the patient's cardiac arrest rhythm, which includes pulseless ventricular tachycardia (VT), ventricular fibrillation (VF), asystole, and pulseless electrical activity (PEA).EpinephrineIndication: Epinephrine is the first-line drug for all cardiac arrest rhythms.Mechanism of Action: Epinephrine...
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Heart Failure Drugs: Inotropic Agents01:26

Heart Failure Drugs: Inotropic Agents

717
Positive inotropic agents are commonly used as the first line of treatment for heart failure. One such agent is digoxin, derived from the genus Digitalis, which has been known for centuries but effectively utilized since 1785. However, these cardiac glycosides can have potentially toxic effects due to their mechanism of action, which involves inhibiting Na+/K+-ATPase and increasing contractility. Digoxin is absorbed orally and distributed in various tissues, including the CNS. It has a long...
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関連する実験動画

Updated: Sep 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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心臓再同期のためのコンダクション・システム・ペースとビベントリキュラー・ペース:CSP-SYNCランダム化単一センター研究

David Žižek1,2, Tadej Žlahtič1,2, Miha Mrak1

  • 1Cardiology Department, University Medical Centre Ljubljana, Ljubljana, Slovenia.

Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology
|August 23, 2025
PubMed
まとめ

左ブンドル・ブランチ・エリア・ペース (LBBAP) は,心臓再同期療法 (CRT) のバイブントリキュラー (BiV) ペースと同じくらい効果的です. この研究では,心臓機能の改善と再構成において,LBBAPはBiVペースに劣っていないことが判明しました.

キーワード:
バイブントリキュラーペース心臓再同期療法導電システムのペース左のバンドル 枝の領域のペース左バンドルのブランチブロック

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

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Translational Rabbit Model of Chronic Cardiac Pacing
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関連する実験動画

Last Updated: Sep 10, 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

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Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System
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Published on: April 11, 2025

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Translational Rabbit Model of Chronic Cardiac Pacing
06:14

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科学分野:

  • 心臓病科
  • 電気生理学
  • 心臓のペース

背景:

  • CRTのLBBAPとBiVのペースを比較した予期的なランダム化研究は限られている.
  • この研究は,CRT患者における比較データの必要性に対応しています.

研究 の 目的:

  • クラスIのCRTの症候群の患者で,LBBAPがBiVペースに劣らないかどうかをテストする.
  • 代替CRT戦略としてLBBAPの有効性を評価する.

主な方法:

  • CSP-SYNCを研究者が主催したランダム化単一センター研究.
  • ランダムに1対1でLBBAPまたはBiVのペースを割り当てられた患者は62人でした.
  • 主要エンドポイント: 左心室噴出分数 (LVEF) の変化

主要な成果:

  • LBBAPは,LVEFの改善においてBiVペースに劣らないことを示した (14. 0%対8. 5%,P<0. 001).
  • 両方のペースメソッドは,LVESVの比較可能な減少,6分歩行テストの改善,NYHAクラスを示しました.
  • 類似した傾向は,LV改造と心不全の入院率で観察されました.

結論:

  • LBBAPは,クラスIの患者におけるCRTにおけるBiVペースに劣らない代替薬です.
  • LBBAPは,BiVペースと比較して,LVEF,構造,電気再構築において同様の改善を達成しています.