[一种基于多源信息融合的方法,用于估计动脉中局部脉冲波速率]
Zhi Chen1, Li Deng1,2, Yufeng Zhang2
1School of Data Science and Information Engineering, Guizhou Minzu University, Guiyang 550025, P. R. China.
概括
这项研究引入了一种机器学习方法,以改善动脉局部脉冲波速率估计,提高比传统技术的准确性和稳定性. 支持矢量回归模型在早期血管弹性评估中表现出卓越的性能.
科学领域:
- 生物医学工程 生物医学工程
- 心血管研究研究心血管研究
- 机器学习在医学中的应用
背景情况:
- 传统的过渡时间方法用于动脉局部脉冲波速度 (PWV) 估计,其准确性低,稳定性差.
- 准确评估动脉弹性对于早期发现心血管疾病至关重要.
研究的目的:
- 开发和评估一种基于机器学习的方法,用于增强 carotid 局部 PWV 的估计.
- 与传统方法相比,提高当地PWV测量的准确性和稳定性.
主要方法:
- 利用了4374名虚拟受试者的数据集,研究了动脉脉波的传播.
- 应用Pearson相关性和最小绝对收缩和选择算法,用于从时间域特征,年龄和心脏参数中选择特征.
- 开发并比较了五种机器学习模型:多重线性回归,贝叶斯脊回归,k-最近邻居回归,支持向量回归和卷积神经网络.
主要成果:
- 所有五种机器学习模型在准确性和稳定性方面都超过了传统方法.
- 支持向量回归模型实现了最佳性能,正常化根平均平方误差<1.80%和R平方>0.980.980.
- 拟议的方法提供了一种可靠的方法,用于定量评估动脉局部血管弹性.
结论:
- 基于机器学习的方法显著提高了动脉局部PWV估计的准确性和稳定性.
- 开发的模型为在临床环境中早期定量评估动脉局部血管弹性提供了一个有前途的工具.
- 这项研究为改善心血管风险分层提供了理论基础和技术支持.
相关概念视频
01:19Assessing Blood pressure using a doppler ultrasound
2.7K
To obtain accurate blood pressure measurements in clinical settings, especially when traditional methods are insufficient, healthcare professionals utilize the Doppler ultrasound technique. This method uses high-frequency sound waves to detect blood flow within the arteries, which is crucial for patients with conditions that complicate circulatory system assessment.
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
2.7K
01:23Assessment of blood pressure in brachial artery(two-step method)
1.8K
Measuring blood pressure is a fundamental skill in healthcare that aids in diagnosing and monitoring hypertension and other cardiovascular conditions. An aneroid sphygmomanometer, commonly used in clinical settings, offers a manual and precise method for blood pressure measurement. The technique for using this instrument involves specific steps that must be carefully executed to ensure accuracy. The following detailed description outlines a two-step technique for assessing blood pressure using...
1.8K
01:15Assessment of blood pressure in brachial artery(one-step method)
1.3K
This procedural guide systematically measures blood pressure using an oscillometric digital sphygmomanometer, emphasizing accuracy, patient safety, and comfort.
Prepare for the Procedure:
Prepare for the Procedure:
1.3K
01:16Pulse
2.4K
When the heart pumps blood out, arterial elastic fibers play a crucial role in sustaining a high-pressure gradient. They expand to accommodate the received blood and then recoil - a process known as the pulse that can be either manually palpated or electronically quantified. Despite a reduction in its effect with increased distance from the heart, elements of the pulse's systolic and diastolic components persist, observable even at the arteriole level.
The pulse serves as a clinical...
The pulse serves as a clinical...
2.4K
01:11Pulse Assessment Sites
3.0K
Pulse assessment sites are crucial in evaluating a patient's cardiovascular health. By assessing the pulsations of arteries at specific anatomical locations, healthcare professionals can gather valuable information about blood flow, heart rate, and peripheral circulation. Understanding these pulse assessment sites is essential for conducting comprehensive cardiovascular evaluations and monitoring patients' overall health. These sites are strategically chosen due to the accessibility and...
3.0K
01:30Equipments Used To Measure Blood Pressure
3.8K
Direct Method
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
3.8K