皮肤交感神经活动复杂性预测心脏衰竭中的突然和非突然心脏死亡率
Alfonso Aranda Hernández1, Peng-Sheng Chen2
1Research and Technology, Defibrillation Solutions, Medtronic, Mounds View, MN 55112.
Heart rhythm
|February 27, 2026
概括
皮肤交感神经活动 (SKNA) 复杂性,以最大的利亚普诺夫指数 (LE) 和多尺度 (MSE) 测量,可以预测心力衰竭 (HF) 患者的心脏死亡风险. 这些非侵入性标志物提供了超越传统方法的宝贵预后信息.
科学领域:
- 心脏病学 心脏病学
- 生物医学工程 生物医学工程
- 生理学 生理学 生理学
背景情况:
- 心力衰竭 (HF) 构成了全球健康挑战,鉴定心脏死亡风险的患者至关重要.
- 增加的交感神经活动 (SNA) 与心室节律失常有关,这表明它在HF预后中的作用.
研究的目的:
- 评估皮肤交感神经活动 (SKNA) 作为HF患者心脏死亡的预后标记.
- 评估SKNA是否可以改善风险分层,超出已建立的临床预测指标和心率变化 (HRV).
主要方法:
- 分析了588名高频患者的心电图记录,使用高通选提取SKNA.
- 量化传统的基于振幅的SKNA和原始信号 (rSKNA) 复杂性特征 (LE, MSE).
- 使用考克斯模型来评估与心脏死亡的关联,调整临床因素并与HRV指数 (SDNN,LF/HF) 进行比较.
主要成果:
- 基于幅度的SKNA指标显示,两组之间没有一致的差异.
- 在因心脏病死亡的患者中观察到较低的rSKNA复杂性 (LE,MSE).
- 多变量分析证实LE和MSE是心脏死亡的独立预测因素 (HR ≈0.75-0.80,p<0.05).
结论:
- 原始信号SKNA复杂度测量,特别是多尺度 (MSE),为高频患者的心脏死亡提供了有价值的非侵入性预后信息.
- 这些rSKNA复杂度指标提供了超越传统临床预测指标和HRV的补充数据,用于风险分层.
更多相关视频
07:12Studying the Coding Profiles of Somatic Stimulation on Cardiac-locked Neuronal Responses in the Rat Spinal Dorsal Horn
Published on: May 23, 2025
647
06:40Impact of Intracardiac Neurons on Cardiac Electrophysiology and Arrhythmogenesis in an Ex Vivo Langendorff System
Published on: May 22, 2018
11.3K
相关概念视频
Heart Failure II: Pathophysiology
1.1K
Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...
1.1K
Sympathetic Activation
7.2K
The sympathetic division can influence tissues and organs by releasing norepinephrine at peripheral synapses and distributing epinephrine and norepinephrine through the bloodstream. In times of crisis or stress, sympathetic activation occurs, which is regulated by sympathetic centers in the hypothalamus. As a result, sympathetic activation prepares the body for physical exertion, rapid ATP production, and heightened alertness, allowing individuals to respond effectively to challenging or...
7.2K
Pathophysiology of Heart Failure
4.2K
Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
4.2K
Regulation of Heart Rates
4.3K
The regulation of heart rate is a complex process controlled by the autonomic nervous system (ANS), hormonal influences, and intrinsic cardiac mechanisms. The ANS has two main components: the sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS).
The SNS increases heart rate through the release of norepinephrine and epinephrine, which act on beta-1 adrenergic receptors in the heart. This action increases the rate of depolarization in the sinoatrial (SA) node, the heart's...
The SNS increases heart rate through the release of norepinephrine and epinephrine, which act on beta-1 adrenergic receptors in the heart. This action increases the rate of depolarization in the sinoatrial (SA) node, the heart's...
4.3K
Pathophysiology of Cardiac Performance
1.7K
Typical heart performance is influenced by heart rate, rhythm, myocardial contraction, and metabolism or blood flow. The cardiac muscle exhibits distinct electrophysiological features, including pacemaker activity and calcium channel control, which play a vital role in the heart's response to various drugs. The autonomic nervous system, comprising the sympathetic and parasympathetic branches, regulates heart rate. Sympathetic activation increases heart rate, while parasympathetic activation...
1.7K
Disorders of the Autonomic Nervous System
1.7K
The autonomic nervous system (ANS) is an intricate network of nerves that controls functions such as the regulation of heart rate, digestion, and blood pressure regulation. When this system malfunctions, it can lead to various disorders that affect multiple bodily functions. One common feature of many autonomic disorders is the involvement of smooth blood vessels, which play a crucial role in regulating blood flow throughout the body.
Raynaud's disease, also known as Raynaud's...
Raynaud's disease, also known as Raynaud's...
1.7K
