BrS中的内心再极化分散:用于映射激活恢复间隔的新型自动算法.
Sara Latrofa1, Valentina Hartwig2, Lorenzo Bachi1
1Health Science Interdisciplinary Center, Scuola Superiore Sant'Anna, Pisa, Italy.
Journal of cardiovascular electrophysiology
|March 13, 2024
概括
在右心室外流通道 (RVOT) 中的反极化分散在布鲁加达综合征 (BrS) 中增加. 这项研究表明内心激活恢复间隔校正 (ARIc) 映射是可行的,并且与BrS患者的其他复极化标志物相关.
科学领域:
- 电力生理学 电力生理学
- 心脏病学 心脏病学
- 医疗成像医学成像
背景情况:
- 在右心室外流通道 (RVOT) 中的反极化分散与布鲁加达综合征 (BrS) 1型心电图表型有关.
- 关于绘制BrS中的再极化分散的数据有限,内心再极化的作用尚不清楚.
研究的目的:
- 用自动化激活恢复间隔 (ARI) 计算来评估内心脏复极化模式. 在BrS患者和对照中.
- 在brs患者中调查ARI,右心室激活时间 (RVAT) 和T波峰至终间隔 (Tpe) 之间的关系.
主要方法:
- 内心高密度电解剖学测绘 (HDEAM) 对39名BrS患者 (24名明显型-1 [OType1],15名潜在型-1 [LType1]) 和4名对照进行.
- LType1患者接受了阿贾马林输液,以揭示1型心电图.
- 调整后的激活恢复间隔 (ARIc) 用Bazett公式计算;RVAT是从激活地图中导出的.
主要成果:
- 与对照组相比,OType1和阿贾马林后LType1患者的平均ARIc显著更长.
- 在LType1患者中,阿贾马林的使用显著延长了ARIc.
- 在1型心电图患者中,ARIc与RVAT和Tpe有正相关性,特别是在OType1患者中.
结论:
- ARIc绘制有效地表明,BrS患者的RVOT内心回极化分散增加.
- 内心ARIc是一种可行的标志物,与RVAT和Tpe正相关,特别是在明显的1型BrS中.
相关概念视频
01:30Cardiac Action Potential
1.4K
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
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
1.4K
01:25Correlation between ECG and Cardiac Cycle
5.1K
The electrical signals recorded on an electrocardiogram (ECG) occur before the mechanical processes of contraction and relaxation during the cardiac cycle.
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
5.1K