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相关概念视频

Pulse rhythm01:30

Pulse rhythm

763
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...
763
Assessment of blood pressure in brachial artery(two-step method)01:23

Assessment of blood pressure in brachial artery(two-step method)

655
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...
655
Assessment of blood pressure in brachial artery(one-step method)01:15

Assessment of blood pressure in brachial artery(one-step method)

555
This procedural guide systematically measures blood pressure using an oscillometric digital sphygmomanometer, emphasizing accuracy, patient safety, and comfort.
Prepare for the Procedure:
555
Assessment of radial pulse01:11

Assessment of radial pulse

794
Assessment of Radial Pulse
The radial pulse, located at the wrist, is often the preferred site for assessing peripheral pulse because of its accessibility and dependability. The process of determining the radial pulse involves several steps:
794
Special considerations while measuring pulse01:13

Special considerations while measuring pulse

562
Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:
562
Equipments Used To Measure Blood Pressure01:30

Equipments Used To Measure Blood Pressure

831
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...
831

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在手腕设备上对机器学习连续脉冲率算法的多中心评估.

Weixuan Chen1, Rafael Cordero2, Jessie Lever Taylor1

  • 1Empatica Inc., Cambridge, MA, USA.

Digital biomarkers
|December 13, 2024
PubMed
概括
此摘要是机器生成的。

这项研究验证了用于连续脉冲率 (PR) 监测的手腕穿戴的光电显微镜 (PPG) 传感器和机器学习 (ML) 算法. 这项技术甚至在运动中实现了临床级准确性,使其适合广泛使用.

关键词:
数字卫生技术数字卫生技术机器学习是机器学习.移动技术是移动技术.运动文物 运动文物脉率是指心脏的脉率.可穿戴式传感器

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科学领域:

  • 生物医学工程 生物医学工程
  • 数字健康技术 数字健康技术
  • 心血管监测 心血管监测

背景情况:

  • 佩戴在手腕上的光电显微镜 (PPG) 传感器对于持续监测心律至关重要.
  • 手腕PPG信号易受运动工件的影响,影响准确性.
  • 机器学习 (ML) 算法可以增强脉冲率 (PR) 追踪,但在临床使用中面临监管障碍.

研究的目的:

  • 用手腕佩戴的PPG传感器和用于连续PR测量的ML算法来评估数字健康技术的准确性.
  • 评估设备在各种条件下的性能,包括运动和不同的人口群体.

主要方法:

  • 三项独立的临床试验招募了志愿者,与研究设备和FDA批准的心电图 (ECG) 同时进行监测.
  • 协议模拟了现实活动,以捕捉无运动和运动条件下的性能.
  • 精度指标包括平方根平均值 (ARMS),偏差,平均绝对误差 (MAE),平均绝对百分比误差 (MAPE) 和一致性相关系数 (CCC).

主要成果:

  • 该设备在静止状态下达到1.67bpm的精度,在运动状态下达到4.39bpm,达到临床接受值.
  • 偏差和约定极限 (LoA) 在两种条件下都处于可接受范围之内 (无运动: -0.09 bpm, -3.36至3.17 bpm;运动:0.51 bpm, -8.05至9.06 bpm).
  • 高一致性相关系数 (和CCC>0.98) 表示与ECG参考非常一致,显示了各子组的概括性.

结论:

  • 基于ML的连续PR估计表明了临床级准确性和通用性.
  • 该技术有效地减轻了身体运动,健康状况和人口统计学等混因素.
  • 这证实了该设备适用于受益于持续PR监测的人群,支持其用于追溯审查和趋势分析的临床实用性.