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相关概念视频

Equipments Used To Measure Blood Pressure01:30

Equipments Used To Measure Blood Pressure

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

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

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...
Fluid Pressure01:14

Fluid Pressure

In mechanical engineering, fluid pressure plays a critical role in designing systems that utilize liquid flow, such as hydraulic systems, pumps, and valves. When designing these systems, engineers must ensure they can withstand the forces created by fluid pressure to avoid damage or failure.
According to Pascal's law, a fluid at rest will generate equal pressure in all directions. This pressure is measured as a force per unit area, and its magnitude depends on the fluid's specific weight or...
Pressure Gauges01:20

Pressure Gauges

Most pressure gauges, like those on scuba tanks, are calibrated to read zero at atmospheric pressure. Readings from such gauges are called the gauge pressure, which is the pressure relative to atmospheric pressure. When the pressure inside the tank exceeds atmospheric pressure, the gauge reports a positive value. Some gauges are designed to measure negative pressure. For example, many physics experiments must take place in a vacuum chamber, a rigid chamber from which some of the air is pumped...
Measurement of Blood Pressure01:17

Measurement of Blood Pressure

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 stethoscope.
Measurement of Fluid Pressure01:16

Measurement of Fluid Pressure

Fluid pressure is commonly measured using devices called manometers, which rely on liquid columns to indicate pressure differences. The height of a liquid column in a manometer reflects the pressure exerted by the fluid, providing a simple yet effective means of measurement. Different types of manometers serve specific purposes based on their configurations and the type of fluids involved.
A basic form of manometer is the piezometer, a vertical tube open at the top and filled with the same...

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相关实验视频

Updated: Jul 8, 2026

Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication
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内底压力传感器用于评估中风后的步态.

Hyung Seok Nam1,2,3, Caitlin Clancy4, Matthew Smuck3

  • 1Department of Rehabilitation Medicine, Sheikh Khalifa Specialty Hospital, Ras al Khaimah, United Arab Emirates.

Annals of rehabilitation medicine
|January 10, 2024
PubMed
概括

带有压力传感器的简化内可以在不改变速度的情况下准确地测量中风幸存者的步态. 非半腿的姿势时间与临床评估有很强的相关性,提供了潜在的家庭治疗工具.

关键词:
步态分析 步态分析内底压力传感器的压力传感器结果衡量结果的措施.一次性中风,中风.

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Evaluation of Patients' Posture and Gait Profile After Lumbar Fusion Surgery by Video Rasterstereography and Treadmill Gait Analysis
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科学领域:

  • 生物医学工程 生物医学工程
  • 康复科学 康复科学 康复科学
  • 临床生物力学 临床生物力学

背景情况:

  • 步行障碍是中风幸存者面临的常见挑战,影响了他们的流动性和生活质量.
  • 与传统的临床尺度相比,客观的,基于传感器的步态分析为更精确和更频繁的评估提供了潜力.
  • 开发非侵入性的,用户友好的步态监测工具对于有效的康复至关重要.

研究的目的:

  • 验证一个简化的内压力传感器系统用于半性中风患者的步态分析.
  • 为了确认传感器内不会对步行速度产生负面影响.
  • 识别基于传感器的特定步态参数,这些参数与已建立的临床步态功能测量有很强的相关性.

主要方法:

  • 十名患有半性中风的参与者接受了10米步行测试,穿着配备内底压力传感器的鞋子.
  • 收集和分析了传感器数据,包括立场时间和跟到脚的峰值时间.
  • 传感器衍生的参数与步行速度和下肢Fugl-Meyer (F-M) 评分相关.

主要成果:

  • 步行速度不受内传感器的影响,显示高相关性 (ρ=0.988) 和一致性 (ICC=0.924).
  • 非半腿的姿势时间和脚跟到脚的峰值时间与F-M分数和步行速度 (β系数从-0.86到-0.95) 都显示出强烈的负相关性.
  • 这些传感器参数显示了临床步态评估结果的显著预测能力.

结论:

  • 非侵入性的内压力传感器可以可靠地评估中风幸存者的步态,而不会改变他们的步态.
  • 非半腿的姿势时间是一个关键参数,与临床步态评估有很强的相关性.
  • 这项技术作为一项实用,家庭使用的临床终点,有望成为中风后步行治疗试验的临床终点.