与早期再极化模式相关的发生性心律失常的长期风险 - - 社区动脉样硬化风险研究 (ARIC)
Qian He1, Yi-Jian Liao2, Jin-Jie Wang1
1Department of Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University.
概括
早期复极化模式 (ERP) 与中年成年人中心室节律失常,肌节律失常和心房的风险增加有关. 新发病或持续的ERP显著提高了心律失常的发生率.
科学领域:
- 心脏病学 心脏病学
- 电力生理学 电力生理学
- 公共卫生 公共卫生
背景情况:
- 早期再极化模式 (ERP) 是已知的心血管死亡风险因素.
- ERP与各种心律失常之间的关联仍未得到充分研究.
研究的目的:
- 调查ERP与发生性心律失常之间的关系.
- 评估与心室节律失常,肌节律失常和心房动 (AF) /动 (Afl) 的关联.
主要方法:
- 分析了20年来来自社区动脉样硬化风险队列的14679名中年参与者.
- 使用考克斯模型评估基线,时间变化和时间更新的ERP.
- 针对潜在的混因素进行调整,以估计危险比率 (HR).
主要成果:
- 时间更新的ERP显示心室节律失常 (1.55),肌节律失常 (1.76) 和AF (1.25) 的HR增加.
- 与正常心电图相比,新发或持续的ERP与发生性心律失常的风险更高.
- 在时间更新的ERP中,前导和J波幅≥0.2mV与较高的心律失常发病率相关.
结论:
- 各种形式的ERP (时间变化,时间更新,新发作,持续) 与发生的节律失常有关.
- 研究结果强调ERP是中年双种族人群中心律失常的重要预测因子.
更多相关视频
10:39Rat Model of Right-Sided Cardiac Remodeling and Arrhythmia Using Pulmonary Artery Banding
Published on: August 30, 2024
590
08:10Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation
Published on: July 20, 2022
1.6K
相关概念视频
01:28Mechanism of Cardiac Arrhythmias
900
Arrhythmias are irregular heart rhythms occurring when the heart's electrical impulses become abnormal. These disturbances can lead to various symptoms, depending on their severity and the underlying cause. Some common factors contributing to arrhythmias include hypoxia, ischemia, electrolyte imbalances, excessive catecholamine exposure, drug toxicity, and muscle overstretching. Arrhythmias can be classified into two main types based on the rate and site of origin of abnormal heart rhythms.
900
01:28Disturbances in Heart Rhythm
918
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...
Arrhythmias are categorized by their speed, rhythm, and origin. A slow...
918
01:30Cardiac Action Potential
1.1K
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
1.1K
01:16ECG Interpretation of Arrhythmias I: Sinus Arrhythmias
195
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,...
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,...
195
01:29Electrocardiogram
2.2K
An electrocardiogram (ECG or EKG) is a critical diagnostic tool that records the electrical signals produced by the heart during each heartbeat. This recording is achieved through electrodes placed strategically on the arms, legs, and chest. The electrocardiograph amplifies these signals and produces 12 distinct tracings, offering a comprehensive understanding of the heart's electrical activity.
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and...
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and...
2.2K
01:25Correlation between ECG and Cardiac Cycle
3.6K
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...
3.6K