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相关概念视频

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The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
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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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Updated: Jun 26, 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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左捆分支区域的节奏改善了右心室功能和同步.

Agnieszka Bednarek1, Grzegorz Kiełbasa1, Paweł Moskal2

  • 1First Department of Cardiology, Interventional Electrocardiology and Hypertension, Jagiellonian University, Medical College, Krakow, Poland; Cardiology, Interventional Cardiac Electrophysiology and Arterial Hypertension Clinical Department, University Hospital, Krakow, Poland.

Heart rhythm
|May 16, 2024
PubMed
概括

左捆支部区域刺激 (LBBAP) 改善了右心室 (RV) 功能,特别是在基线隔膜异常的患者中. 然而,基底LBBAP放置可能与三腹吐 (TR) 的恶化有关.

关键词:
不同步的时间变化.一个心声回声图 (Echocardiogram) 是一个心声回声图.左捆分支机构地区步行步行.右心室的右心室.三椎门的反反.

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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
  • 心脏节拍是因为心脏节拍.

背景情况:

  • 左束支部区域节奏 (LBBAP) 对右心室 (RV) 功能和三回 (TR) 的长期影响尚不清楚.
  • 评估这些影响对于优化节奏策略至关重要.

研究的目的:

  • 评估LBBAP对RV性能和TR的长期影响.
  • 为了确定RV功能改善和LBBAP后TR进展的预测因素.

主要方法:

  • 通过RV自由壁应变,三状环状平面缩外流,部分面积变化和侧面三状环状缩速度评估RV功能.
  • 通过反向隔膜闪光 (RSF) 和基底凸出 (BB) 的存在来评估RV运动模式.
  • 测量了-TV距离,以评估与三管环的距离.

主要成果:

  • 在122名患者 (平均年龄76.5岁) 中,随访时间中位数为21个月,RV无壁菌株在LBBAP后显著改善.
  • 左心室喷射分数预测改善了RV功能.
  • 大多数患者的RSF和BB都消失了,在基线RSF患者中,VR功能得到了更大的改善.
  • 没有整体TR恶化,但较短的领先-TV距离 (<24.5毫米) 与TR进展相关.

结论:

  • LBBAP证明对RV功能有有益影响.
  • 基底LBBAP定位可能与TR恶化的风险增加有关.