室内电图持续时间图检测室内心律失常基质:VEDUM项目研究研究
Pietro Rossi1, Filippo Maria Cauti1, Marta Niscola2
1Arrhythmology Unit, Ospedale Fatebenefratelli Isola Tiberina-Gemelli Isola, Rome, Italy (P.R., F.M.C., M.M., M.P., S.C., S.B.).
Circulation. Arrhythmia and electrophysiology
|July 24, 2023
概括
室腔电图持续时间映射 (VEDUM) 识别了室腔动心 (VT) 患者的缓慢,不均的激活区域. 这些VEDUM区域是静脉瘤切除的关键目标,特别是在具有多个静脉瘤形态的区域.
科学领域:
- 电子生理学 电子生理学
- 心脏节律失常症 心脏节律失常症
- 医疗成像医学成像
背景情况:
- 分析心室低心率 (VT) 波激活模式是理解和治疗这种疾病的关键.
- 心室电图持续时间图 (VEDUM) 是一种新的方法来检测缓慢和不均激活的区域.
- 关于VEDUM区域的特征和在鼻腔/节奏节奏期间的失节性作用的数据有限.
研究的目的:
- 在鼻腔/节奏节奏期间识别的VEDUM区域的特征.
- 为了评估VEDUM区域在接受静脉管切除的患者中的心律失常作用.
- 评估VEDUM在确定静脉除的目标中的实用性.
主要方法:
- 在三个中心招募了32名接受静脉管切除手术的患者.
- 在鼻腔/节奏节奏过程中创建了VEDUM地图,以及基板和功能地图.
- 对所有血液动力学耐受性静脉瘤发作进行了激活映射.
主要成果:
- 平均VEDUM面积大小为12.1厘米;与正常组织 (65.5毫秒) 相比,电图持续时间显著更长 (163.7毫秒).
- 在59.4%的患者中,VEDUM区域相当于密集的痕,经常观察到减速区域和晚期潜力.
- 在93.5%的患者中,静脉沟位于VEDUM区域内,包括87.5%的多个静脉沟形态的所有静脉沟.
结论:
- VEDUM地图有效地识别了缓慢和不均传导的离散区域.
- 这些VEDUM地区是VT废除的有希望的目标.
- 对于患有各种静脉瘤形态的患者来说,VEDUM方法是有价值的.
相关概念视频
01:29Electrocardiogram
2.5K
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...
2.5K
01:25ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias
45
Arrhythmia is a condition characterized by an irregular heart rhythm, with ECG changes that differ based on its origin and nature. The types of arrhythmias discussed below include atrial, junctional, and ventricular arrhythmias.Atrial ArrhythmiasPremature Atrial Complexes (PACs): PACs are early atrial beats caused by stress, caffeine, alcohol, electrolyte imbalances, hypoxia, hyperthyroidism, or certain medications (e.g., bronchodilators and decongestants). The ECG shows early P waves with an...
45
01:30Cardiac Action Potential
1.7K
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
1.7K
01:28Electrocardiogram Fundamentals
644
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...
644
01:24ECG Interpretation of Rhythms
1.4K
An electrocardiogram (ECG)graphically represents the heart's electrical activity on ECG paper or a monitor.
Components of the Electrocardiogram
The primary components of a normal ECG waveform in Normal sinus rhythm(NSR) include the P wave, PR interval, QRS complex, ST segment, T wave, and occasionally a U wave.
ECG waveforms are divided by vertical and horizontal lines at standard intervals.
The horizontal axis measures time and rate, and the vertical axis measures amplitude or voltage....
Components of the Electrocardiogram
The primary components of a normal ECG waveform in Normal sinus rhythm(NSR) include the P wave, PR interval, QRS complex, ST segment, T wave, and occasionally a U wave.
ECG waveforms are divided by vertical and horizontal lines at standard intervals.
The horizontal axis measures time and rate, and the vertical axis measures amplitude or voltage....
1.4K
01:25Correlation between ECG and Cardiac Cycle
7.1K
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...
7.1K