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相关概念视频

Equipments Used To Measure Blood Pressure01:30

Equipments Used To Measure Blood Pressure

966
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...
966
Special considerations while measuring blood pressure01:28

Special considerations while measuring blood pressure

722
When assessing blood pressure (BP), healthcare professionals must consider various factors and potential unexpected outcomes to ensure accurate readings and provide proper patient care. Adhering to these guidelines is essential to achieving the most reliable results.
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
722
Sites for measruring blood pressure01:21

Sites for measruring blood pressure

1.7K
Blood pressure measurement is a fundamental clinical procedure, providing crucial data for assessing cardiovascular health. Among the various sites for this measurement, the brachial and popliteal arteries are predominantly utilized due to their accessibility and the reliability of their readings. This lesson delves into the anatomical significance, methodology, and considerations of measuring blood pressure at these locations.
The Brachial Artery: Primary Site for Blood Pressure Measurement
1.7K
Measurement of Blood Pressure01:17

Measurement of Blood Pressure

924
Assessing blood pressure is a standard procedure executed in virtually all medical environments. The method utilized today was established over a hundred years ago by an innovative Russian doctor, Dr. Nikolai Korotkoff. The soft ticking noise, known as Korotkoff sounds, heard while taking blood pressure readings results from turbulent blood flow within the vessels. The apparatus required for this procedure includes a sphygmomanometer, a blood pressure cuff attached to a gauge, and a...
924
Assessing Blood pressure using a doppler ultrasound01:19

Assessing Blood pressure using a doppler ultrasound

1.3K
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:
1.3K
Pre-Procedural Guidelines for Assessing Blood Pressure01:10

Pre-Procedural Guidelines for Assessing Blood Pressure

563
Accurate blood pressure assessment is crucial for diagnosing and managing various health conditions. To ensure the reliability of these measurements, healthcare professionals must adhere to standardized pre-procedural guidelines. These guidelines enhance patient safety and improve the overall quality of healthcare. The following steps are essential for obtaining accurate and consistent blood pressure readings, from using the appropriate tools to ensuring effective communication with the...
563

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相关实验视频

Updated: Jun 29, 2025

Author Spotlight: Advancing the Study of Brain-Heart Interplay with a Comprehensive EEGLAB Plugin for Multimodal Signal Analysis
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使用机器学习算法从最佳PPG特征特征进行连续无袖血压测量,使用机器学习算法.

Araf Nishan1, S M Taslim Uddin Raju1, Md Imran Hossain1

  • 1Department of Computer Science and Engineering, Khulna University of Engineering & Technology, Khulna - 9203, Bangladesh.

Heliyon
|March 27, 2024
PubMed
概括

这项研究引入了一种新的,无袖子的方法,用于非侵入性血压 (BP) 估计,使用光聚血图 (PPG) 信号. 开发的技术准确地估计了心压,心压和平均动脉压,符合高临床标准.

关键词:
持续的血压 (BP) 是指持续的血压.功能提取 功能提取功能选择 功能选择非线性回归模型的非线性回归模型.摄影电流图 (PPG) 是一种摄影电流图.

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科学领域:

  • 生物医学工程 生物医学工程
  • 心血管健康 心血管健康
  • 信号处理 信号处理

背景情况:

  • 高血压检测依赖于血压 (BP) 测量,这对于预防和治疗心血管疾病至关重要.
  • 传统的基于袖子的血压监测是不舒服的,并且限制了连续测量.
  • 非侵入性,无袖的血压监测对于改善患者护理是非常可取的.

研究的目的:

  • 提出和验证一种新的非侵入性,无袖子的方法来估计静脉血压 (SBP),平均动脉压 (MAP) 和心动脉血压 (DBP).
  • 为了利用光聚体图 (PPG) 信号和非线性回归算法的特征特征,以准确估计BP.
  • 使用选定的特征来比较BP估计的各种回归模型的性能.

主要方法:

  • 从219名参与者收集了PPG信号.
  • 从PPG及其衍生品中提取了46个时间,频率和时间频率域特征,包括年龄和性别.
  • 应用基于关联的特征选择 (CFS) 和缓解F (ReliefF) 用于特征选择.
  • 开发了使用支持向量回归 (SVR),K-最近邻居回归 (KNR),决策树回归 (DTR) 和随机森林回归 (RFR) 的BP估计模型.

主要成果:

  • 使用ReliefF功能选择的SVR模型实现了最佳性能,SBP的平均绝对误差为2.49 mmHg,MAP的平均误差为1.62 mmHg,DBP的平均误差为1.43 mmHg.
  • 拟议的方法符合医学仪器仪表的进步标准,用于BP估计.
  • 根据英国高血压协会标准,SBP,MAP和DBP的A级结果.

结论:

  • 开发的方法允许仅从PPG信号特征进行非侵入性血压估计.
  • 不需要手套或校准,比传统方法提供了显著的优势.
  • 这种方法有望实现连续和舒适的BP监测.