静脉动脉冲动脉退出部位位于心肌再生内核区内,预测缺血性心肌病的血液动力稳定性

相关实验视频

Updated: Feb 21, 2026

Ablation of Ischemic Ventricular Tachycardia Using a Multipolar Catheter and 3-dimensional Mapping System for High-density Electro-anatomical Reconstruction

Ablation of Ischemic Ventricular Tachycardia Using a Multipolar Catheter and 3-dimensional Mapping System for High-density Electro-anatomical Reconstruction

Published on: January 31, 2019

Jorge L Reyes^1,2, Darshan Krishnappa¹, Lucy Q Lin³

¹Advanced Interventional Cardiac Electrophysiology, LAA Closure Program, Cardiovascular Division, Minneapolis VA Health Care System, University of Minnesota, Minneapolis, MN, 55417, USA.

Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing

|February 19, 2026

概括

腹腔动脉冲动 (VT) 出口地点位于中央痕区域附近,预测血液动力学不稳定. 围心梗塞边界区域的出口与稳定的VT相关,有助于风险分层和废除策略.

科学领域:

心脏病学心脏病学
电子生理学电子生理学
心脏外科手术心脏外科手术

背景情况:

在心室低心率 (VT) 期间的血液动力学稳定性对于成功的映射和切除至关重要.
缺血性痕介导的静脉瘤由于潜在的血液动力学损害而带来了重大挑战.

研究的目的:

为了研究静脉瘤退出部位位于不同心肌痕区内的位置对血液动力学稳定性的影响.
为了确定痕区域的特征是否影响缺血性静脉瘤的血液动力学稳定性.

主要方法:

在27名患有缺血性痕介导性静脉瘤的患者中分析了51例静脉瘤,使用了电解剖绘图和导管切除.
在双极电压的基础上,将VT退出点分为中央痕区 (CSZ) 或围心梗塞边界区 (PIBZ) 的分类.
血液动力学稳定性的定义和使用多变量逻辑回归的预测因素的识别.

主要成果:

58.8%的VTs在血液动力学上不稳定.
稳定的VTs主要来自PIBZ (81%),而不稳定的VTs通常来自CSZ (19%).
独立预测的血液动力学不稳定性 (OR 6.8,P = 0.02),不稳定的VTs显示较低的射出分数和较短的周期长度.

结论:

相对于心肌痕区域,静脉瘤退出部位的位置是血液动力学稳定的独立预测指标.
中央痕区域的出口与血液动力学不稳定性有关,而围心脏病发作边界区域的出口与稳定性相关.
研究结果表明,在缺血性静脉瘤中,差异性再生内核和机械力量影响了风险分层和废弃策略.

关键词:

自主神经系统的自主神经系统.心脏电生理学心脏电生理学血液动力学稳定性血液动力学稳定性缺血性心肌病是一种缺血性心肌病.腹腔动脉短心症是因为心室短心.

更多相关视频

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System

Published on: April 11, 2025

Confirmation of Myocardial Ischemia and Reperfusion Injury in Mice Using Surface Pad Electrocardiography

Confirmation of Myocardial Ischemia and Reperfusion Injury in Mice Using Surface Pad Electrocardiography

Published on: November 24, 2016

相关概念视频

Dysrhythmias II: Classification of Tachyarrhythmias

Dysrhythmias II: Classification of Tachyarrhythmias

Tachyarrhythmias are a type of dysrhythmia where the heart rate exceeds 100 beats per minute. Here are some common types of tachyarrhythmias:Sinus TachycardiaSinus tachycardia originates from increased impulses from the sinus node, leading to an elevated heart rate. It is often triggered by stress, fever, or exercise.Patients may experience palpitations, a sensation of a racing heart, dizziness, and chest discomfort.Causes and Risk Factors: Common causes include physical exertion, emotional...

Dysrhythmias III: Characteristics of Dysrhythmias

Dysrhythmias III: Characteristics of Dysrhythmias

Dysrhythmias, also known as arrhythmias, are irregular heart rhythms that result from abnormal electrical activity in the heart, affecting its ability to circulate blood efficiently. Tachyarrhythmias, a subset of dysrhythmias, are characterized by abnormally fast heart rates exceeding 100 beats per minute. Here are some types of tachyarrhythmias with their distinct ECG features:Sinus Tachycardia:Sinus tachycardia presents a regular heart rhythm with an increased rate of 101-180 beats per...

Electrophysiology of Normal Cardiac Rhythm

Electrophysiology of Normal Cardiac Rhythm

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...

Mechanism of Cardiac Arrhythmias

Mechanism of Cardiac Arrhythmias

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.

Dysrhythmias IV: Characteristics of Bradyarrhythmias

Dysrhythmias IV: Characteristics of Bradyarrhythmias

Bradyarrhythmias are cardiac rhythm disorders characterized by a slower-than-normal heart rate, typically defined as fewer than 60 beats per minute. Some of which are discussed here:Sinus BradycardiaSinus bradycardia presents a heart rate lower than 60 beats per minute, with a regular rhythm originating from the SA node. The ECG typically shows normal P waves preceding each QRS complex, a normal PR interval (0.12 to 0.20 seconds), and a normal QRS duration (0.06 to 0.10 seconds).First-Degree AV...

ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias

ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias

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...