一个有效和快速的模型来表征心律失常和充血性心力衰竭
Salim Lahmiri1, Stelios Bekiros2
1Department of Supply Chain and Business Technology Management, John Molson School of Business, Concordia University, Montreal, QC H3H 0A1, Canada.
Diagnostics (Basel, Switzerland)
|April 12, 2025
概括
一个新的系统使用离散等弦变换 (DCT) 的更高的振幅系数 (HAC) 来从心电图中准确检测心律失常 (ARR) 和充血性心力衰竭 (CHF). 这种计算机辅助诊断 (CAD) 工具对于临床使用来说是快速有效的.
科学领域:
- 生物医学工程 生物医学工程
- 心脏病学 心脏病学
- 信号处理 信号处理
背景情况:
- 心律不整 (ARR) 和充血性心力衰竭 (CHF) 是具有潜在致命后果的严重心脏疾病.
- 早期和准确检测ARR和CHF对于有效的患者管理和改善结果至关重要.
研究的目的:
- 开发一个快速而准确的自动检测系统,以区分正常鼻 (NS) 节律和ARR.
- 开发一个快速准确的自动检测系统,以区分NS节奏和CHF.
主要方法:
- 作为关键特征,利用了来自心电图 (ECG) 信号的离散等比变换 (DCT) 的更高幅度系数 (HAC).
- 采用统计分类器,特别是k-最近邻近 (k-NN) 算法,用于信号歧视.
- 使用十倍交叉验证评估系统性能.
主要成果:
- DCT有效地压缩了心电图信号,而衍生的HAC显示了正常鼻 (NS) 和异常节奏 (ARR,CHF) 之间的显著差异.
- k-NN分类器实现了高精度:97%的ARR与NS (99%的灵敏度,90%的特异性,0.63s处理时间) 和99%的CHF与NS (99.7%的灵敏度,99.2%的特异性,0.27s处理时间).
- 与最近的相关工作相比,DCT-kNN系统表现出卓越的准确性和速度.
结论:
- 基于DCT的HAC作为有效的生物标志物用于识别ARR和CHF.
- 开发的计算机辅助诊断 (CAD) 系统是高效的,准确的,不需要ECG信号预处理或细分.
- 拟议的系统显示出在临床环境中实际实施的重大前景.
相关概念视频
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...
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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.
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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.
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01:28Mechanism of Cardiac Arrhythmias
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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.
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01:30Cardiac Action Potential
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01:19Electrophysiology of Normal Cardiac Rhythm
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