被忽视的参数:三 E 波减速时间作为VDD无心脏起器中心房同步的预测指标
Mattia Strazzanti1, Caterina Maffeis2, Luca Tomasi2
1Cardiology Division, Department of Cardiac, Thoracic and Vascular Sciences, Carlo Poma Hospital, Mantua, Italy.
Journal of cardiovascular electrophysiology
|March 11, 2025
概括
像Micra AV这样的无心脏起器可以改善心脏节奏. 心声学,特别是右心房功能,可以预测接受这些设备的患者心房同步 (AVS).
科学领域:
- 心脏病学 心脏病学
- 生物医学工程 生物医学工程
- 医疗成像医学成像
背景情况:
- 无心脏起器,如Medtronic的Micra AV,通过减少并发症,在传统系统上提供优势.
- 使用无心脏起器实现最佳心房心脏同步 (AVS) 可能具有挑战性,特别是在高节奏负担的患者中.
研究的目的:
- 在Micra AV无心脏起器植入后对预测AVS的回声心脏学参数进行前性评估.
- 在接受无节奏治疗的患者中确定成功的AVS的植入前预测因素.
主要方法:
- 这是一项前性研究,涉及30名植入Medtronic Micra AV无心脏起器的患者.
- 通过使用24小时的霍尔特监测来评估心房同步 (AVS).
- 分析了侧重于右心房功能的心声学参数,以确定AVS的预测因子.
主要成果:
- 获得的AVS中位数为67.9%±9.6%.
- 右心房功能,特别是三 E 波减速时间,是AVS的唯一独立预测因子 (p=0.03),AUC为0.77.
- 这种回声心脏学参数显示出对植入后的AVS具有显著的预测价值.
结论:
- 植入前对右心房参数的回声心脏学评估,特别是三 E 波减速时间,可以预测接受 Micra AV无心脏起器的患者的 AVS.
- 这些发现可能有助于患者选择,以最大限度地发挥无节奏的好处.
- 建议对更大的患者队列和更长的随访期进行进一步的研究.
相关概念视频
01:25Correlation between ECG and Cardiac Cycle
3.1K
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...
3.1K
01:28Electrocardiogram Fundamentals
471
Introduction
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin...
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin...
471
01:29Electrocardiogram
2.0K
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...
2.0K
01:28Disturbances in Heart Rhythm
842
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...
842