基于鼻节律心电图和基线信息,智能评估心房的分级
Biqi Tang1, Sen Liu1, Xujian Feng1
1Department of Biomedical Engineering, School of Information Science and Technology, Fudan University, Shanghai, 200433, PR China.
Computer methods and programs in biomedicine
|February 24, 2024
概括
使用矢量心电图 (VCG) 和患者数据的新模型简化了心房动 (AF) 梯度评估. 这种方法为临床管理提供了一个计算效率高和准确的预后工具.
科学领域:
- 心脏病学 心脏病学
- 医疗信息学 医疗信息学
- 生物医学工程 生物医学工程
背景情况:
- 心房动 (AF) 是一种进展性心律失常,影响生活质量.
- 目前用于AF管理的4S-AF方案复杂且耗时,阻碍了广泛的临床采用.
- 需要一个简化,客观的评估模型在初级保健设置AF分级.
研究的目的:
- 为了简化AF分级的评估过程.
- 开发一个客观的评估模型来分类AF严重程度.
- 利用生理信号和机器学习来改善AF管理.
主要方法:
- 追溯分析了来自64名AF患者的189张心电图记录.
- 根据4S-AF方案,对数据进行轻度和重度AF组的注释.
- 在鼻腔节律 (SR) 期间,从心电图中生成合成的矢量心脏图 (VCG).
- 从VCG,ECG和基线特征 (年龄,性别,病史) 提取特征.
- 机器学习模型 (SVM,随机森林,物流回归) 的评估与特征选择.
主要成果:
- 随机森林 (RF) 模型在AF分级分类中取得了高性能.
- 结合VCG和基线数据的优化功能集产生了最好的结果.
- 在患者间模式中,RF模型显示了准确度 (83.02%),灵敏度 (80.56%) 和特异性 (88.24%).
结论:
- 生理信号,特别是VCG,对于AF分级评估是有价值的.
- 拟议的模型有效地区分了轻度和严重的AF.
- 该模型的低计算复杂性和高性能使其成为临床AF管理的有希望的预后工具.
相关概念视频
01:29Electrocardiogram
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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...
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01:16ECG Interpretation of Arrhythmias I: Sinus Arrhythmias
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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,...
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01:28Electrocardiogram Fundamentals
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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...
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01:24ECG Interpretation of Rhythms
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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....
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01:30Pulse rhythm
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Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
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01:28Disturbances in Heart Rhythm
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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...
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